<div dir="ltr">This looks OK but is such a large patch, it needs more eyes.<div><br></div><div>Gedare and Chris... please.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Mar 3, 2016 at 8:47 AM, Sebastian Huber <span dir="ltr"><<a href="mailto:sebastian.huber@embedded-brains.de" target="_blank">sebastian.huber@embedded-brains.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Use a red-black tree instead of delta chains.<br>
<br>
Close #2344.<br>
Update #2554.<br>
Update #2555.<br>
Close #2606.<br>
---<br>
 cpukit/posix/Makefile.am                           |   3 +-<br>
 cpukit/posix/include/rtems/posix/pthreadimpl.h     |   5 +-<br>
 cpukit/posix/include/rtems/posix/threadsup.h       |   2 +<br>
 cpukit/posix/include/rtems/posix/timerimpl.h       |  54 +-<br>
 cpukit/posix/src/alarm.c                           |  96 ++--<br>
 cpukit/posix/src/nanosleep.c                       |   5 +-<br>
 cpukit/posix/src/pthread.c                         |  31 +-<br>
 cpukit/posix/src/pthreadcreate.c                   |   6 +-<br>
 cpukit/posix/src/pthreadsetschedparam.c            |  14 +-<br>
 cpukit/posix/src/timercreate.c                     |   3 +-<br>
 cpukit/posix/src/timerdelete.c                     |  12 +-<br>
 cpukit/posix/src/timergetoverrun.c                 |   7 +-<br>
 cpukit/posix/src/timergettime.c                    |  29 +-<br>
 cpukit/posix/src/timerinserthelper.c               |  66 ---<br>
 cpukit/posix/src/timersettime.c                    | 152 ++++--<br>
 cpukit/posix/src/timertsr.c                        |  89 ----<br>
 cpukit/posix/src/ualarm.c                          | 155 +++---<br>
 cpukit/rtems/include/rtems/rtems/ratemonimpl.h     |  24 +-<br>
 cpukit/rtems/include/rtems/rtems/timer.h           |  59 ++-<br>
 cpukit/rtems/include/rtems/rtems/timerimpl.h       | 216 ++++----<br>
 cpukit/rtems/src/eventseize.c                      |  11 +-<br>
 cpukit/rtems/src/eventsurrender.c                  |   2 +-<br>
 cpukit/rtems/src/ratemoncancel.c                   |   5 +-<br>
 cpukit/rtems/src/ratemoncreate.c                   |   3 +-<br>
 cpukit/rtems/src/ratemondelete.c                   |   5 +-<br>
 cpukit/rtems/src/ratemonperiod.c                   |  38 +-<br>
 cpukit/rtems/src/ratemontimeout.c                  |  50 +-<br>
 cpukit/rtems/src/taskwakeafter.c                   |   9 +-<br>
 cpukit/rtems/src/taskwakewhen.c                    |  18 +-<br>
 cpukit/rtems/src/timercancel.c                     |  31 +-<br>
 cpukit/rtems/src/timercreate.c                     | 179 ++++++-<br>
 cpukit/rtems/src/timerdelete.c                     |  14 +-<br>
 cpukit/rtems/src/timerfireafter.c                  |  64 +--<br>
 cpukit/rtems/src/timerfirewhen.c                   |  50 +-<br>
 cpukit/rtems/src/timergetinfo.c                    |  13 +-<br>
 cpukit/rtems/src/timerreset.c                      |  41 +-<br>
 cpukit/rtems/src/timerserver.c                     | 394 ++++----------<br>
 cpukit/rtems/src/timerserverfireafter.c            |  68 +--<br>
 cpukit/rtems/src/timerserverfirewhen.c             |  70 +--<br>
 cpukit/sapi/src/exinit.c                           |   3 -<br>
 cpukit/score/Makefile.am                           |   5 +-<br>
 cpukit/score/include/rtems/score/mrsp.h            |   7 +-<br>
 cpukit/score/include/rtems/score/mrspimpl.h        |  32 +-<br>
 cpukit/score/include/rtems/score/percpu.h          |  53 +-<br>
 cpukit/score/include/rtems/score/schedulerimpl.h   |  16 +-<br>
 cpukit/score/include/rtems/score/thread.h          |  13 +-<br>
 cpukit/score/include/rtems/score/threadimpl.h      |  61 ++-<br>
 cpukit/score/include/rtems/score/todimpl.h         |  17 -<br>
 cpukit/score/include/rtems/score/watchdog.h        |  89 ++--<br>
 cpukit/score/include/rtems/score/watchdogimpl.h    | 590 +++++++++------------<br>
 cpukit/score/src/condition.c                       |   2 +-<br>
 cpukit/score/src/coretodset.c                      |  28 +-<br>
 cpukit/score/src/coretodtickle.c                   |  36 --<br>
 cpukit/score/src/kern_tc.c                         |   3 +-<br>
 cpukit/score/src/smp.c                             |   1 +<br>
 cpukit/score/src/threadinitialize.c                |   4 +<br>
 cpukit/score/src/threadqenqueue.c                  |  10 +-<br>
 cpukit/score/src/threadrestart.c                   |  12 +-<br>
 cpukit/score/src/threadtimeout.c                   |   4 +-<br>
 cpukit/score/src/watchdog.c                        |  36 --<br>
 cpukit/score/src/watchdogadjust.c                  |  80 ---<br>
 cpukit/score/src/watchdoginsert.c                  | 132 ++---<br>
 cpukit/score/src/watchdogremove.c                  | 172 +-----<br>
 cpukit/score/src/watchdogtick.c                    |  78 ++-<br>
 testsuites/smptests/Makefile.am                    |   1 +<br>
 testsuites/smptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a>                   |   1 +<br>
 testsuites/smptests/smpclock01/Makefile.am         |  20 +<br>
 testsuites/smptests/smpclock01/init.c              | 206 +++++++<br>
 testsuites/smptests/smpclock01/smpclock01.doc      |  11 +<br>
 testsuites/smptests/smpclock01/smpclock01.scn      |   2 +<br>
 .../smptests/smpwakeafter01/smpwakeafter01.scn     | 224 ++++++--<br>
 testsuites/sptests/Makefile.am                     |   3 +-<br>
 testsuites/sptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a>                    |   2 +-<br>
 testsuites/sptests/sp31/task1.c                    |  22 -<br>
 testsuites/sptests/spintrcritical08/init.c         |  26 +-<br>
 testsuites/sptests/spintrcritical09/init.c         |  27 +-<br>
 testsuites/sptests/spintrcritical10/init.c         |   6 +-<br>
 testsuites/sptests/spintrcritical16/init.c         |   2 +-<br>
 testsuites/sptests/spintrcritical17/Makefile.am    |  25 -<br>
 testsuites/sptests/spintrcritical17/init.c         | 118 -----<br>
 .../sptests/spintrcritical17/spintrcritical17.doc  |  18 -<br>
 .../sptests/spintrcritical17/spintrcritical17.scn  |   2 -<br>
 testsuites/sptests/spintrcritical20/init.c         |   2 +-<br>
 testsuites/sptests/spsize/size.c                   |   2 -<br>
 testsuites/sptests/sptimecounter01/init.c          |   3 -<br>
 testsuites/sptests/sptimerserver01/Makefile.am     |  19 +<br>
 testsuites/sptests/sptimerserver01/init.c          | 129 +++++<br>
 .../sptests/sptimerserver01/sptimerserver01.doc    |  12 +<br>
 .../sptests/sptimerserver01/sptimerserver01.scn    |   2 +<br>
 testsuites/sptests/spwatchdog/init.c               | 381 ++++++-------<br>
 testsuites/tmtests/tmtimer01/tmtimer01.scn         |  90 ++--<br>
 91 files changed, 2340 insertions(+), 2593 deletions(-)<br>
 delete mode 100644 cpukit/posix/src/timerinserthelper.c<br>
 delete mode 100644 cpukit/posix/src/timertsr.c<br>
 delete mode 100644 cpukit/score/src/coretodtickle.c<br>
 delete mode 100644 cpukit/score/src/watchdog.c<br>
 delete mode 100644 cpukit/score/src/watchdogadjust.c<br>
 create mode 100644 testsuites/smptests/smpclock01/Makefile.am<br>
 create mode 100644 testsuites/smptests/smpclock01/init.c<br>
 create mode 100644 testsuites/smptests/smpclock01/smpclock01.doc<br>
 create mode 100644 testsuites/smptests/smpclock01/smpclock01.scn<br>
 delete mode 100644 testsuites/sptests/spintrcritical17/Makefile.am<br>
 delete mode 100644 testsuites/sptests/spintrcritical17/init.c<br>
 delete mode 100644 testsuites/sptests/spintrcritical17/spintrcritical17.doc<br>
 delete mode 100644 testsuites/sptests/spintrcritical17/spintrcritical17.scn<br>
 create mode 100644 testsuites/sptests/sptimerserver01/Makefile.am<br>
 create mode 100644 testsuites/sptests/sptimerserver01/init.c<br>
 create mode 100644 testsuites/sptests/sptimerserver01/sptimerserver01.doc<br>
 create mode 100644 testsuites/sptests/sptimerserver01/sptimerserver01.scn<br>
<br>
diff --git a/cpukit/posix/Makefile.am b/cpukit/posix/Makefile.am<br>
index 40bc153..62a2a5a 100644<br>
--- a/cpukit/posix/Makefile.am<br>
+++ b/cpukit/posix/Makefile.am<br>
@@ -196,8 +196,7 @@ libposix_a_SOURCES += src/adjtime.c src/clockgetcpuclockid.c<br>
<br>
 ## TIMER_C_FILES<br>
 libposix_a_SOURCES += src/ptimer.c src/timercreate.c src/timerdelete.c \<br>
-    src/timergetoverrun.c src/timergettime.c src/timersettime.c \<br>
-    src/timertsr.c src/timerinserthelper.c<br>
+    src/timergetoverrun.c src/timergettime.c src/timersettime.c<br>
<br>
 ## ITIMER_C_FILES<br>
 libposix_a_SOURCES += src/getitimer.c src/setitimer.c<br>
diff --git a/cpukit/posix/include/rtems/posix/pthreadimpl.h b/cpukit/posix/include/rtems/posix/pthreadimpl.h<br>
index 870b5f9..16b0163 100644<br>
--- a/cpukit/posix/include/rtems/posix/pthreadimpl.h<br>
+++ b/cpukit/posix/include/rtems/posix/pthreadimpl.h<br>
@@ -114,10 +114,7 @@ void _POSIX_Threads_Sporadic_budget_callout(<br>
  * @param[in] argument is a pointer to the Thread_Control structure<br>
  *            for the thread being replenished.<br>
  */<br>
-void _POSIX_Threads_Sporadic_budget_TSR(<br>
-  Objects_Id      id,<br>
-  void           *argument<br>
-);<br>
+void _POSIX_Threads_Sporadic_budget_TSR( Watchdog_Control *watchdog );<br>
<br>
 /**<br>
  * @brief Translate sched_param into SuperCore terms.<br>
diff --git a/cpukit/posix/include/rtems/posix/threadsup.h b/cpukit/posix/include/rtems/posix/threadsup.h<br>
index 55db35d..7cd2354 100644<br>
--- a/cpukit/posix/include/rtems/posix/threadsup.h<br>
+++ b/cpukit/posix/include/rtems/posix/threadsup.h<br>
@@ -42,6 +42,8 @@ extern "C" {<br>
  * each thread in a system with POSIX configured.<br>
  */<br>
 typedef struct {<br>
+  /** Back pointer to thread of this POSIX API control. */<br>
+  Thread_Control         *thread;<br>
   /** This is the POSIX threads attribute set. */<br>
   pthread_attr_t          Attributes;<br>
   /** This indicates whether the thread is attached or detached. */<br>
diff --git a/cpukit/posix/include/rtems/posix/timerimpl.h b/cpukit/posix/include/rtems/posix/timerimpl.h<br>
index 8b5b42e..8c151c1 100644<br>
--- a/cpukit/posix/include/rtems/posix/timerimpl.h<br>
+++ b/cpukit/posix/include/rtems/posix/timerimpl.h<br>
@@ -21,6 +21,7 @@<br>
<br>
 #include <rtems/posix/timer.h><br>
 #include <rtems/score/objectimpl.h><br>
+#include <rtems/score/watchdogimpl.h><br>
<br>
 #ifdef __cplusplus<br>
 extern "C" {<br>
@@ -51,24 +52,6 @@ extern "C" {<br>
 #endif<br>
<br>
 /**<br>
- *  @brief POSIX Timer Manager Timer Service Routine Helper<br>
- *<br>
- *  This is the operation that is run when a timer expires.<br>
- */<br>
-void _POSIX_Timer_TSR(Objects_Id timer, void *data);<br>
-<br>
-/**<br>
- *  @brief POSIX Timer Watchdog Insertion Helper<br>
- */<br>
-bool _POSIX_Timer_Insert_helper(<br>
-  Watchdog_Control               *timer,<br>
-  Watchdog_Interval               ticks,<br>
-  Objects_Id                      id,<br>
-  Watchdog_Service_routine_entry  TSR,<br>
-  void                           *arg<br>
-);<br>
-<br>
-/**<br>
  *  The following defines the information control block used to manage<br>
  *  this class of objects.<br>
  */<br>
@@ -98,6 +81,8 @@ RTEMS_INLINE_ROUTINE void _POSIX_Timer_Free (<br>
   _Objects_Free( &_POSIX_Timer_Information, &the_timer->Object );<br>
 }<br>
<br>
+void _POSIX_Timer_TSR( Watchdog_Control *the_watchdog );<br>
+<br>
 /**<br>
  *  @brief POSIX Timer Get<br>
  *<br>
@@ -109,11 +94,38 @@ RTEMS_INLINE_ROUTINE void _POSIX_Timer_Free (<br>
  */<br>
 RTEMS_INLINE_ROUTINE POSIX_Timer_Control *_POSIX_Timer_Get (<br>
   timer_t            id,<br>
-  Objects_Locations *location<br>
+  Objects_Locations *location,<br>
+  ISR_lock_Context  *lock_context<br>
+)<br>
+{<br>
+  return (POSIX_Timer_Control *) _Objects_Get_isr_disable(<br>
+    &_POSIX_Timer_Information,<br>
+    (Objects_Id) id,<br>
+    location,<br>
+    lock_context<br>
+  );<br>
+}<br>
+<br>
+RTEMS_INLINE_ROUTINE Per_CPU_Control *_POSIX_Timer_Acquire_critical(<br>
+  POSIX_Timer_Control *ptimer,<br>
+  ISR_lock_Context    *lock_context<br>
+)<br>
+{<br>
+  Per_CPU_Control *cpu;<br>
+<br>
+  cpu = _Watchdog_Get_CPU( &ptimer->Timer );<br>
+  _Watchdog_Per_CPU_acquire( cpu, lock_context );<br>
+<br>
+  return cpu;<br>
+}<br>
+<br>
+RTEMS_INLINE_ROUTINE void _POSIX_Timer_Release(<br>
+  Per_CPU_Control  *cpu,<br>
+  ISR_lock_Context *lock_context<br>
 )<br>
 {<br>
-  return (POSIX_Timer_Control *)<br>
-    _Objects_Get( &_POSIX_Timer_Information, (Objects_Id) id, location );<br>
+  _Watchdog_Per_CPU_release( cpu, lock_context );<br>
+  _ISR_lock_ISR_enable( lock_context );<br>
 }<br>
<br>
 #ifdef __cplusplus<br>
diff --git a/cpukit/posix/src/alarm.c b/cpukit/posix/src/alarm.c<br>
index e85622f..196bc16 100644<br>
--- a/cpukit/posix/src/alarm.c<br>
+++ b/cpukit/posix/src/alarm.c<br>
@@ -22,29 +22,18 @@<br>
 #endif<br>
<br>
 #include <unistd.h><br>
+#include <signal.h><br>
<br>
-#include <rtems/posix/pthreadimpl.h><br>
-#include <rtems/posix/psignalimpl.h><br>
-#include <rtems/score/threaddispatch.h><br>
 #include <rtems/score/todimpl.h><br>
 #include <rtems/score/watchdogimpl.h><br>
<br>
-/*<br>
- *  _POSIX_signals_Alarm_TSR<br>
- */<br>
-static void _POSIX_signals_Alarm_TSR(<br>
-  Objects_Id      id RTEMS_UNUSED,<br>
-  void           *argument RTEMS_UNUSED<br>
-)<br>
+ISR_LOCK_DEFINE( static, _POSIX_signals_Alarm_lock, "POSIX Alarm" )<br>
+<br>
+static void _POSIX_signals_Alarm_TSR( Watchdog_Control *the_watchdog )<br>
 {<br>
-  #if defined(RTEMS_DEBUG)<br>
-    int status;<br>
-    #define KILL_STATUS status =<br>
-  #else<br>
-    #define KILL_STATUS (void)<br>
-  #endif<br>
+  int status;<br>
<br>
-  KILL_STATUS kill( getpid(), SIGALRM );<br>
+  status = kill( getpid(), SIGALRM );<br>
<br>
   #if defined(RTEMS_DEBUG)<br>
     /*<br>
@@ -52,43 +41,62 @@ static void _POSIX_signals_Alarm_TSR(<br>
      *  cautious.<br>
      */<br>
     _Assert(status == 0);<br>
+  #else<br>
+    (void) status;<br>
   #endif<br>
 }<br>
<br>
-static Watchdog_Control _POSIX_signals_Alarm_timer = WATCHDOG_INITIALIZER(<br>
-  _POSIX_signals_Alarm_TSR,<br>
-  0,<br>
-  NULL<br>
+static Watchdog_Control _POSIX_signals_Alarm_watchdog = WATCHDOG_INITIALIZER(<br>
+  _POSIX_signals_Alarm_TSR<br>
 );<br>
<br>
 unsigned int alarm(<br>
   unsigned int seconds<br>
 )<br>
 {<br>
-  unsigned int      remaining = 0;<br>
-  Watchdog_Control *the_timer;<br>
-  Watchdog_States   state;<br>
-<br>
-  the_timer = &_POSIX_signals_Alarm_timer;<br>
-<br>
-  _Thread_Disable_dispatch();<br>
-<br>
-  state = _Watchdog_Remove_seconds( the_timer );<br>
-  if ( state == WATCHDOG_ACTIVE ) {<br>
-    /*<br>
-     *  The stop_time and start_time fields are snapshots of ticks since<br>
-     *  boot.  Since alarm() is dealing in seconds, we must account for<br>
-     *  this.<br>
-     */<br>
-<br>
-    remaining = the_timer->initial -<br>
-      ((the_timer->stop_time - the_timer->start_time) / TOD_TICKS_PER_SECOND);<br>
+  unsigned int      remaining;<br>
+  Watchdog_Control *the_watchdog;<br>
+  ISR_lock_Context  lock_context;<br>
+  ISR_lock_Context  lock_context2;<br>
+  Per_CPU_Control  *cpu;<br>
+  uint64_t          now;<br>
+  uint32_t          ticks_per_second;<br>
+  uint32_t          ticks;<br>
+<br>
+  the_watchdog = &_POSIX_signals_Alarm_watchdog;<br>
+  ticks_per_second = TOD_TICKS_PER_SECOND;<br>
+  ticks = seconds * ticks_per_second;<br>
+<br>
+  _ISR_lock_ISR_disable_and_acquire(<br>
+    &_POSIX_signals_Alarm_lock,<br>
+    &lock_context<br>
+  );<br>
+<br>
+  cpu = _Watchdog_Get_CPU( the_watchdog );<br>
+  _Watchdog_Per_CPU_acquire( cpu, &lock_context2 );<br>
+  now = cpu->Watchdog.ticks;<br>
+<br>
+  remaining = (unsigned long) _Watchdog_Cancel(<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+    the_watchdog,<br>
+    now<br>
+  );<br>
+<br>
+  if ( ticks != 0 ) {<br>
+    cpu = _Per_CPU_Get();<br>
+    _Watchdog_Set_CPU( the_watchdog, cpu );<br>
+    _Watchdog_Insert(<br>
+      &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+      the_watchdog,<br>
+      now + ticks<br>
+    );<br>
   }<br>
<br>
-  if ( seconds )<br>
-    _Watchdog_Insert_seconds( the_timer, seconds );<br>
-<br>
-  _Thread_Enable_dispatch();<br>
+  _Watchdog_Per_CPU_release( cpu, &lock_context2 );<br>
+  _ISR_lock_Release_and_ISR_enable(<br>
+    &_POSIX_signals_Alarm_lock,<br>
+    &lock_context<br>
+  );<br>
<br>
-  return remaining;<br>
+  return ( remaining + ticks_per_second - 1 ) / ticks_per_second;<br>
 }<br>
diff --git a/cpukit/posix/src/nanosleep.c b/cpukit/posix/src/nanosleep.c<br>
index 46697ae..21bdb98 100644<br>
--- a/cpukit/posix/src/nanosleep.c<br>
+++ b/cpukit/posix/src/nanosleep.c<br>
@@ -46,6 +46,7 @@ int nanosleep(<br>
   Per_CPU_Control *cpu_self;<br>
<br>
   Watchdog_Interval  ticks;<br>
+  Watchdog_Interval  start;<br>
   Watchdog_Interval  elapsed;<br>
<br>
<br>
@@ -81,6 +82,8 @@ int nanosleep(<br>
     return 0;<br>
   }<br>
<br>
+  start = _Watchdog_Ticks_since_boot;<br>
+<br>
   /*<br>
    *  Block for the desired amount of time<br>
    */<br>
@@ -96,7 +99,7 @@ int nanosleep(<br>
    * Calculate the time that passed while we were sleeping and how<br>
    * much remains from what we requested.<br>
    */<br>
-  elapsed = executing->Timer.stop_time - executing->Timer.start_time;<br>
+  elapsed = _Watchdog_Ticks_since_boot - start;<br>
   if ( elapsed >= ticks )<br>
     ticks = 0;<br>
   else<br>
diff --git a/cpukit/posix/src/pthread.c b/cpukit/posix/src/pthread.c<br>
index ac5fbe4..001ae79 100644<br>
--- a/cpukit/posix/src/pthread.c<br>
+++ b/cpukit/posix/src/pthread.c<br>
@@ -104,18 +104,15 @@ static bool _POSIX_Threads_Sporadic_budget_TSR_filter(<br>
 /*<br>
  *  _POSIX_Threads_Sporadic_budget_TSR<br>
  */<br>
-void _POSIX_Threads_Sporadic_budget_TSR(<br>
-  Objects_Id      id RTEMS_UNUSED,<br>
-  void           *argument<br>
-)<br>
+void _POSIX_Threads_Sporadic_budget_TSR( Watchdog_Control *watchdog )<br>
 {<br>
   uint32_t            ticks;<br>
-  Thread_Control     *the_thread;<br>
   POSIX_API_Control  *api;<br>
+  Thread_Control     *the_thread;<br>
+  ISR_Level           level;<br>
<br>
-  the_thread = argument;<br>
-<br>
-  api = the_thread->API_Extensions[ THREAD_API_POSIX ];<br>
+  api = RTEMS_CONTAINER_OF( watchdog, POSIX_API_Control, Sporadic_timer );<br>
+  the_thread = api->thread;<br>
<br>
   /* ticks is guaranteed to be at least one */<br>
   ticks = _Timespec_To_ticks( &api->schedparam.sched_ss_init_budget );<br>
@@ -133,7 +130,15 @@ void _POSIX_Threads_Sporadic_budget_TSR(<br>
   /* ticks is guaranteed to be at least one */<br>
   ticks = _Timespec_To_ticks( &api->schedparam.sched_ss_repl_period );<br>
<br>
-  _Watchdog_Insert_ticks( &api->Sporadic_timer, ticks );<br>
+  _Thread_Disable_dispatch();<br>
+  _ISR_Disable( level );<br>
+  _Watchdog_Per_CPU_insert_relative(<br>
+    &api->Sporadic_timer,<br>
+    _Per_CPU_Get(),<br>
+    ticks<br>
+  );<br>
+  _ISR_Enable( level );<br>
+  _Thread_Unnest_dispatch();<br>
 }<br>
<br>
 static bool _POSIX_Threads_Sporadic_budget_callout_filter(<br>
@@ -198,6 +203,7 @@ static bool _POSIX_Threads_Create_extension(<br>
   api = created->API_Extensions[ THREAD_API_POSIX ];<br>
<br>
   /* XXX check all fields are touched */<br>
+  api->thread = created;<br>
   _POSIX_Threads_Initialize_attributes( &api->Attributes );<br>
   api->detachstate = _POSIX_Threads_Default_attributes.detachstate;<br>
   api->schedpolicy = _POSIX_Threads_Default_attributes.schedpolicy;<br>
@@ -229,11 +235,10 @@ static bool _POSIX_Threads_Create_extension(<br>
<br>
   _Thread_queue_Initialize( &api->Join_List, THREAD_QUEUE_DISCIPLINE_FIFO );<br>
<br>
+  _Watchdog_Preinitialize( &api->Sporadic_timer, _Per_CPU_Get_by_index( 0 ) );<br>
   _Watchdog_Initialize(<br>
     &api->Sporadic_timer,<br>
-    _POSIX_Threads_Sporadic_budget_TSR,<br>
-    created->Object.id,<br>
-    created<br>
+    _POSIX_Threads_Sporadic_budget_TSR<br>
   );<br>
<br>
   return true;<br>
@@ -260,7 +265,7 @@ static void _POSIX_Threads_Terminate_extension(<br>
       *(void **)the_thread->Wait.return_argument = value_ptr;<br>
<br>
   if ( api->schedpolicy == SCHED_SPORADIC )<br>
-    _Watchdog_Remove_ticks( &api->Sporadic_timer );<br>
+    _Watchdog_Per_CPU_remove_relative( &api->Sporadic_timer );<br>
<br>
   _Thread_queue_Destroy( &api->Join_List );<br>
<br>
diff --git a/cpukit/posix/src/pthreadcreate.c b/cpukit/posix/src/pthreadcreate.c<br>
index 3185ab6..fc07b1f 100644<br>
--- a/cpukit/posix/src/pthreadcreate.c<br>
+++ b/cpukit/posix/src/pthreadcreate.c<br>
@@ -74,6 +74,7 @@ int pthread_create(<br>
   struct sched_param                  schedparam;<br>
   Objects_Name                        name;<br>
   int                                 rc;<br>
+  ISR_Level                           level;<br>
<br>
   if ( !start_routine )<br>
     return EFAULT;<br>
@@ -246,10 +247,13 @@ int pthread_create(<br>
   #endif<br>
<br>
   if ( schedpolicy == SCHED_SPORADIC ) {<br>
-    _Watchdog_Insert_ticks(<br>
+    _ISR_Disable( level );<br>
+    _Watchdog_Per_CPU_insert_relative(<br>
       &api->Sporadic_timer,<br>
+      _Per_CPU_Get(),<br>
       _Timespec_To_ticks( &api->schedparam.sched_ss_repl_period )<br>
     );<br>
+    _ISR_Enable( level );<br>
   }<br>
<br>
   _Thread_Enable_dispatch();<br>
diff --git a/cpukit/posix/src/pthreadsetschedparam.c b/cpukit/posix/src/pthreadsetschedparam.c<br>
index c3be366..c9560f5 100644<br>
--- a/cpukit/posix/src/pthreadsetschedparam.c<br>
+++ b/cpukit/posix/src/pthreadsetschedparam.c<br>
@@ -44,6 +44,7 @@ int pthread_setschedparam(<br>
   Objects_Locations                    location;<br>
   int                                  rc;<br>
   Priority_Control                     unused;<br>
+  ISR_Level                            level;<br>
<br>
   /*<br>
    *  Check all the parameters<br>
@@ -69,8 +70,11 @@ int pthread_setschedparam(<br>
     case OBJECTS_LOCAL:<br>
       api = the_thread->API_Extensions[ THREAD_API_POSIX ];<br>
<br>
-      if ( api->schedpolicy == SCHED_SPORADIC )<br>
-        _Watchdog_Remove_ticks( &api->Sporadic_timer );<br>
+      if ( api->schedpolicy == SCHED_SPORADIC ) {<br>
+        _ISR_Disable( level );<br>
+        _Watchdog_Per_CPU_remove_relative( &api->Sporadic_timer );<br>
+        _ISR_Enable( level );<br>
+      }<br>
<br>
       api->schedpolicy = policy;<br>
       api->schedparam  = *param;<br>
@@ -97,8 +101,10 @@ int pthread_setschedparam(<br>
<br>
         case SCHED_SPORADIC:<br>
           api->ss_high_priority = api->schedparam.sched_priority;<br>
-          _Watchdog_Remove_ticks( &api->Sporadic_timer );<br>
-          _POSIX_Threads_Sporadic_budget_TSR( 0, the_thread );<br>
+          _ISR_Disable( level );<br>
+          _Watchdog_Per_CPU_remove_relative( &api->Sporadic_timer );<br>
+          _ISR_Enable( level );<br>
+          _POSIX_Threads_Sporadic_budget_TSR( &api->Sporadic_timer );<br>
           break;<br>
       }<br>
<br>
diff --git a/cpukit/posix/src/timercreate.c b/cpukit/posix/src/timercreate.c<br>
index 697f1ce..5123071 100644<br>
--- a/cpukit/posix/src/timercreate.c<br>
+++ b/cpukit/posix/src/timercreate.c<br>
@@ -91,7 +91,8 @@ int timer_create(<br>
   ptimer->timer_data.it_interval.tv_sec  = 0;<br>
   ptimer->timer_data.it_interval.tv_nsec = 0;<br>
<br>
-  _Watchdog_Preinitialize( &ptimer->Timer );<br>
+  _Watchdog_Preinitialize( &ptimer->Timer, _Per_CPU_Get_snapshot() );<br>
+  _Watchdog_Initialize( &ptimer->Timer, _POSIX_Timer_TSR );<br>
   _Objects_Open_u32(&_POSIX_Timer_Information, &ptimer->Object, 0);<br>
<br>
   *timerid  = ptimer->Object.id;<br>
diff --git a/cpukit/posix/src/timerdelete.c b/cpukit/posix/src/timerdelete.c<br>
index 8438b0d..c39de8e 100644<br>
--- a/cpukit/posix/src/timerdelete.c<br>
+++ b/cpukit/posix/src/timerdelete.c<br>
@@ -45,16 +45,22 @@ int timer_delete(<br>
   */<br>
   POSIX_Timer_Control *ptimer;<br>
   Objects_Locations    location;<br>
+  ISR_lock_Context     lock_context;<br>
+  Per_CPU_Control     *cpu;<br>
<br>
   _Objects_Allocator_lock();<br>
-  ptimer = _POSIX_Timer_Get( timerid, &location );<br>
+  ptimer = _POSIX_Timer_Get( timerid, &location, &lock_context );<br>
   switch ( location ) {<br>
<br>
     case OBJECTS_LOCAL:<br>
       _Objects_Close( &_POSIX_Timer_Information, &ptimer->Object );<br>
+      cpu = _POSIX_Timer_Acquire_critical( ptimer, &lock_context );<br>
       ptimer->state = POSIX_TIMER_STATE_FREE;<br>
-      _Watchdog_Remove_ticks( &ptimer->Timer );<br>
-      _Objects_Put( &ptimer->Object );<br>
+      _Watchdog_Remove(<br>
+        &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+        &ptimer->Timer<br>
+      );<br>
+      _POSIX_Timer_Release( cpu, &lock_context );<br>
       _POSIX_Timer_Free( ptimer );<br>
       _Objects_Allocator_unlock();<br>
<br>
diff --git a/cpukit/posix/src/timergetoverrun.c b/cpukit/posix/src/timergetoverrun.c<br>
index dd7669e..0a28fa7 100644<br>
--- a/cpukit/posix/src/timergetoverrun.c<br>
+++ b/cpukit/posix/src/timergetoverrun.c<br>
@@ -33,14 +33,17 @@ int timer_getoverrun(<br>
   int                  overrun;<br>
   POSIX_Timer_Control *ptimer;<br>
   Objects_Locations    location;<br>
+  ISR_lock_Context     lock_context;<br>
+  Per_CPU_Control     *cpu;<br>
<br>
-  ptimer = _POSIX_Timer_Get( timerid, &location );<br>
+  ptimer = _POSIX_Timer_Get( timerid, &location, &lock_context );<br>
   switch ( location ) {<br>
<br>
     case OBJECTS_LOCAL:<br>
+      cpu = _POSIX_Timer_Acquire_critical( ptimer, &lock_context );<br>
       overrun = ptimer->overrun;<br>
       ptimer->overrun = 0;<br>
-      _Objects_Put( &ptimer->Object );<br>
+      _POSIX_Timer_Release( cpu, &lock_context );<br>
       return overrun;<br>
<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
diff --git a/cpukit/posix/src/timergettime.c b/cpukit/posix/src/timergettime.c<br>
index f065cc9..7f0015b 100644<br>
--- a/cpukit/posix/src/timergettime.c<br>
+++ b/cpukit/posix/src/timergettime.c<br>
@@ -42,31 +42,32 @@ int timer_gettime(<br>
 {<br>
   POSIX_Timer_Control *ptimer;<br>
   Objects_Locations    location;<br>
-  struct timespec      current_time;<br>
-  Watchdog_Interval    left;<br>
+  ISR_lock_Context     lock_context;<br>
+  Per_CPU_Control     *cpu;<br>
+  uint64_t             now;<br>
+  uint32_t             remaining;<br>
<br>
   if ( !value )<br>
     rtems_set_errno_and_return_minus_one( EINVAL );<br>
<br>
-  /* Reads the current time */<br>
-  _TOD_Get_as_timespec( &current_time );<br>
-<br>
-  ptimer = _POSIX_Timer_Get( timerid, &location );<br>
+  ptimer = _POSIX_Timer_Get( timerid, &location, &lock_context );<br>
   switch ( location ) {<br>
<br>
     case OBJECTS_LOCAL:<br>
<br>
-      /* Calculates the time left before the timer finishes */<br>
-<br>
-      left =<br>
-        (ptimer->Timer.start_time + ptimer->Timer.initial) - /* expire */<br>
-        _Watchdog_Ticks_since_boot;                          /* now */<br>
+      cpu = _POSIX_Timer_Acquire_critical( ptimer, &lock_context );<br>
+      now = cpu->Watchdog.ticks;<br>
<br>
-      _Timespec_From_ticks( left, &value->it_value );<br>
+      if ( now < ptimer->Timer.expire ) {<br>
+        remaining = (uint32_t) ( ptimer->Timer.expire - now );<br>
+      } else {<br>
+        remaining = 0;<br>
+      }<br>
<br>
-      value->it_interval  = ptimer->timer_data.it_interval;<br>
+      _Timespec_From_ticks( remaining, &value->it_value );<br>
+      value->it_interval = ptimer->timer_data.it_interval;<br>
<br>
-      _Objects_Put( &ptimer->Object );<br>
+      _POSIX_Timer_Release( cpu, &lock_context );<br>
       return 0;<br>
<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
diff --git a/cpukit/posix/src/timerinserthelper.c b/cpukit/posix/src/timerinserthelper.c<br>
deleted file mode 100644<br>
index b1f3373..0000000<br>
--- a/cpukit/posix/src/timerinserthelper.c<br>
+++ /dev/null<br>
@@ -1,66 +0,0 @@<br>
-/**<br>
- * @file<br>
- *<br>
- * @brief Helper Routine for POSIX TIMERS<br>
- * @ingroup POSIXAPI<br>
- */<br>
-<br>
-/*<br>
- *  Helper routine for POSIX timers<br>
- *<br>
- *  COPYRIGHT (c) 1989-2007.<br>
- *  On-Line Applications Research Corporation (OAR).<br>
- *<br>
- *  The license and distribution terms for this file may be<br>
- *  found in the file LICENSE in this distribution or at<br>
- *  <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
- */<br>
-<br>
-#if HAVE_CONFIG_H<br>
-#include "config.h"<br>
-#endif<br>
-<br>
-#include <time.h><br>
-<br>
-#include <rtems/system.h><br>
-#include <rtems/seterr.h><br>
-#include <rtems/score/isr.h><br>
-#include <rtems/score/watchdogimpl.h><br>
-#include <rtems/posix/timerimpl.h><br>
-#include <rtems/posix/ptimer.h><br>
-<br>
-bool _POSIX_Timer_Insert_helper(<br>
-  Watchdog_Control               *timer,<br>
-  Watchdog_Interval               ticks,<br>
-  Objects_Id                      id,<br>
-  Watchdog_Service_routine_entry  TSR,<br>
-  void                           *arg<br>
-)<br>
-{<br>
-  ISR_lock_Context  lock_context;<br>
-  Watchdog_Header  *header;<br>
-<br>
-  _Watchdog_Remove_ticks( timer );<br>
-<br>
-  header = &_Watchdog_Ticks_header;<br>
-  _Watchdog_Acquire( header, &lock_context );<br>
-<br>
-    /*<br>
-     *  Check to see if the watchdog has just been inserted by a<br>
-     *  higher priority interrupt.  If so, abandon this insert.<br>
-     */<br>
-    if ( timer->state != WATCHDOG_INACTIVE ) {<br>
-      _Watchdog_Release( header, &lock_context );<br>
-      return false;<br>
-    }<br>
-<br>
-    /*<br>
-     *  OK.  Now we now the timer was not rescheduled by an interrupt<br>
-     *  so we can atomically initialize it as in use.<br>
-     */<br>
-    _Watchdog_Initialize( timer, TSR, id, arg );<br>
-    timer->initial = ticks;<br>
-    _Watchdog_Insert_locked( header, timer, &lock_context );<br>
-  _Watchdog_Release( header, &lock_context );<br>
-  return true;<br>
-}<br>
diff --git a/cpukit/posix/src/timersettime.c b/cpukit/posix/src/timersettime.c<br>
index fe54ff9..ac5c258 100644<br>
--- a/cpukit/posix/src/timersettime.c<br>
+++ b/cpukit/posix/src/timersettime.c<br>
@@ -29,6 +29,76 @@<br>
 #include <rtems/score/watchdogimpl.h><br>
 #include <rtems/seterr.h><br>
<br>
+static void _POSIX_Timer_Insert(<br>
+  POSIX_Timer_Control *ptimer,<br>
+  Per_CPU_Control     *cpu,<br>
+  Watchdog_Interval    ticks<br>
+)<br>
+{<br>
+  ptimer->ticks = ticks;<br>
+<br>
+  /* The state really did not change but just to be safe */<br>
+  ptimer->state = POSIX_TIMER_STATE_CREATE_RUN;<br>
+<br>
+  /* Store the time when the timer was started again */<br>
+  _TOD_Get_as_timespec( &ptimer->time );<br>
+<br>
+  _Watchdog_Insert(<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+    &ptimer->Timer,<br>
+    cpu->Watchdog.ticks + ticks<br>
+  );<br>
+}<br>
+<br>
+/*<br>
+ *  This is the operation that is run when a timer expires<br>
+ */<br>
+void _POSIX_Timer_TSR( Watchdog_Control *the_watchdog )<br>
+{<br>
+  POSIX_Timer_Control *ptimer;<br>
+  ISR_lock_Context     lock_context;<br>
+  Per_CPU_Control     *cpu;<br>
+<br>
+  ptimer = RTEMS_CONTAINER_OF( the_watchdog, POSIX_Timer_Control, Timer );<br>
+  _ISR_lock_ISR_disable( &lock_context );<br>
+  cpu = _POSIX_Timer_Acquire_critical( ptimer, &lock_context );<br>
+<br>
+  /* Increment the number of expirations. */<br>
+  ptimer->overrun = ptimer->overrun + 1;<br>
+<br>
+  /* The timer must be reprogrammed */<br>
+  if ( ( ptimer->timer_data.it_interval.tv_sec  != 0 ) ||<br>
+       ( ptimer->timer_data.it_interval.tv_nsec != 0 ) ) {<br>
+    _POSIX_Timer_Insert( ptimer, cpu, ptimer->ticks );<br>
+  } else {<br>
+   /* Indicates that the timer is stopped */<br>
+   ptimer->state = POSIX_TIMER_STATE_CREATE_STOP;<br>
+  }<br>
+<br>
+  _POSIX_Timer_Release( cpu, &lock_context );<br>
+<br>
+  /*<br>
+   * The sending of the signal to the process running the handling function<br>
+   * specified for that signal is simulated<br>
+   */<br>
+<br>
+  if ( pthread_kill ( ptimer->thread_id, ptimer->inf.sigev_signo ) ) {<br>
+    _Assert( FALSE );<br>
+    /*<br>
+     * TODO: What if an error happens at run-time? This should never<br>
+     *       occur because the timer should be canceled if the thread<br>
+     *       is deleted. This method is being invoked from the Clock<br>
+     *       Tick ISR so even if we decide to take action on an error,<br>
+     *       we don't have many options. We shouldn't shut the system down.<br>
+     */<br>
+  }<br>
+<br>
+  /* After the signal handler returns, the count of expirations of the<br>
+   * timer must be set to 0.<br>
+   */<br>
+  ptimer->overrun = 0;<br>
+}<br>
+<br>
 int timer_settime(<br>
   timer_t                  timerid,<br>
   int                      flags,<br>
@@ -38,7 +108,8 @@ int timer_settime(<br>
 {<br>
   POSIX_Timer_Control *ptimer;<br>
   Objects_Locations    location;<br>
-  bool                 activated;<br>
+  ISR_lock_Context     lock_context;<br>
+  Per_CPU_Control     *cpu;<br>
   uint32_t             initial_period;<br>
   struct itimerspec    normalize;<br>
<br>
@@ -77,56 +148,47 @@ int timer_settime(<br>
    * or start it again<br>
    */<br>
<br>
-  ptimer = _POSIX_Timer_Get( timerid, &location );<br>
+  ptimer = _POSIX_Timer_Get( timerid, &location, &lock_context );<br>
   switch ( location ) {<br>
<br>
     case OBJECTS_LOCAL:<br>
+      cpu = _POSIX_Timer_Acquire_critical( ptimer, &lock_context );<br>
+<br>
+      /* Stop the timer */<br>
+      _Watchdog_Remove(<br>
+        &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+        &ptimer->Timer<br>
+      );<br>
+<br>
       /* First, it verifies if the timer must be stopped */<br>
       if ( normalize.it_value.tv_sec == 0 && normalize.it_value.tv_nsec == 0 ) {<br>
-         /* Stop the timer */<br>
-         _Watchdog_Remove_ticks( &ptimer->Timer );<br>
-         /* The old data of the timer are returned */<br>
-         if ( ovalue )<br>
-           *ovalue = ptimer->timer_data;<br>
-         /* The new data are set */<br>
-         ptimer->timer_data = normalize;<br>
-         /* Indicates that the timer is created and stopped */<br>
-         ptimer->state = POSIX_TIMER_STATE_CREATE_STOP;<br>
-         /* Returns with success */<br>
-        _Objects_Put( &ptimer->Object );<br>
+        /* The old data of the timer are returned */<br>
+        if ( ovalue )<br>
+          *ovalue = ptimer->timer_data;<br>
+        /* The new data are set */<br>
+        ptimer->timer_data = normalize;<br>
+        /* Indicates that the timer is created and stopped */<br>
+        ptimer->state = POSIX_TIMER_STATE_CREATE_STOP;<br>
+        /* Returns with success */<br>
+        _POSIX_Timer_Release( cpu, &lock_context );<br>
         return 0;<br>
-       }<br>
-<br>
-       /* Convert from seconds and nanoseconds to ticks */<br>
-       ptimer->ticks  = _Timespec_To_ticks( &value->it_interval );<br>
-       initial_period = _Timespec_To_ticks( &normalize.it_value );<br>
-<br>
-<br>
-       activated = _POSIX_Timer_Insert_helper(<br>
-         &ptimer->Timer,<br>
-         initial_period,<br>
-         ptimer->Object.id,<br>
-         _POSIX_Timer_TSR,<br>
-         ptimer<br>
-       );<br>
-       if ( !activated ) {<br>
-         _Objects_Put( &ptimer->Object );<br>
-         return 0;<br>
-       }<br>
-<br>
-       /*<br>
-        * The timer has been started and is running.  So we return the<br>
-        * old ones in "ovalue"<br>
-        */<br>
-       if ( ovalue )<br>
-         *ovalue = ptimer->timer_data;<br>
-       ptimer->timer_data = normalize;<br>
-<br>
-       /* Indicate that the time is running */<br>
-       ptimer->state = POSIX_TIMER_STATE_CREATE_RUN;<br>
-       _TOD_Get_as_timespec( &ptimer->time );<br>
-      _Objects_Put( &ptimer->Object );<br>
-       return 0;<br>
+      }<br>
+<br>
+      /* Convert from seconds and nanoseconds to ticks */<br>
+      ptimer->ticks  = _Timespec_To_ticks( &value->it_interval );<br>
+      initial_period = _Timespec_To_ticks( &normalize.it_value );<br>
+<br>
+      _POSIX_Timer_Insert( ptimer, cpu, initial_period );<br>
+<br>
+      /*<br>
+       * The timer has been started and is running.  So we return the<br>
+       * old ones in "ovalue"<br>
+       */<br>
+      if ( ovalue )<br>
+        *ovalue = ptimer->timer_data;<br>
+      ptimer->timer_data = normalize;<br>
+      _POSIX_Timer_Release( cpu, &lock_context );<br>
+      return 0;<br>
<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
     case OBJECTS_REMOTE:<br>
diff --git a/cpukit/posix/src/timertsr.c b/cpukit/posix/src/timertsr.c<br>
deleted file mode 100644<br>
index 092bf16..0000000<br>
--- a/cpukit/posix/src/timertsr.c<br>
+++ /dev/null<br>
@@ -1,89 +0,0 @@<br>
-/**<br>
- * @file<br>
- *<br>
- * @brief Operation that is run when a timer expires<br>
- * @ingroup POSIX_INTERNAL_TIMERS Timers<br>
- */<br>
-<br>
-/*<br>
- * _POSIX_Timer_TSR<br>
- *<br>
- *  COPYRIGHT (c) 1989-2007.<br>
- *  On-Line Applications Research Corporation (OAR).<br>
- *<br>
- *  The license and distribution terms for this file may be<br>
- *  found in the file LICENSE in this distribution or at<br>
- *  <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
- */<br>
-<br>
-#if HAVE_CONFIG_H<br>
-#include "config.h"<br>
-#endif<br>
-<br>
-#include <time.h><br>
-#include <pthread.h><br>
-#include <signal.h><br>
-<br>
-#include <rtems/posix/ptimer.h><br>
-#include <rtems/posix/timerimpl.h><br>
-#include <rtems/score/todimpl.h><br>
-<br>
-/*<br>
- *  This is the operation that is run when a timer expires<br>
- */<br>
-void _POSIX_Timer_TSR(<br>
-  Objects_Id timer RTEMS_UNUSED,<br>
-  void *data)<br>
-{<br>
-  POSIX_Timer_Control *ptimer;<br>
-  bool                 activated;<br>
-<br>
-  ptimer = (POSIX_Timer_Control *)data;<br>
-<br>
-  /* Increment the number of expirations. */<br>
-  ptimer->overrun = ptimer->overrun + 1;<br>
-<br>
-  /* The timer must be reprogrammed */<br>
-  if ( ( ptimer->timer_data.it_interval.tv_sec  != 0 ) ||<br>
-       ( ptimer->timer_data.it_interval.tv_nsec != 0 ) ) {<br>
-    activated = _POSIX_Timer_Insert_helper(<br>
-      &ptimer->Timer,<br>
-      ptimer->ticks,<br>
-      ptimer->Object.id,<br>
-      _POSIX_Timer_TSR,<br>
-      ptimer<br>
-    );<br>
-    if ( !activated )<br>
-      return;<br>
-<br>
-    /* Store the time when the timer was started again */<br>
-    _TOD_Get_as_timespec( &ptimer->time );<br>
-<br>
-    /* The state really did not change but just to be safe */<br>
-    ptimer->state = POSIX_TIMER_STATE_CREATE_RUN;<br>
-  } else {<br>
-   /* Indicates that the timer is stopped */<br>
-   ptimer->state = POSIX_TIMER_STATE_CREATE_STOP;<br>
-  }<br>
-<br>
-  /*<br>
-   * The sending of the signal to the process running the handling function<br>
-   * specified for that signal is simulated<br>
-   */<br>
-<br>
-  if ( pthread_kill ( ptimer->thread_id, ptimer->inf.sigev_signo ) ) {<br>
-    _Assert( FALSE );<br>
-    /*<br>
-     * TODO: What if an error happens at run-time? This should never<br>
-     *       occur because the timer should be canceled if the thread<br>
-     *       is deleted. This method is being invoked from the Clock<br>
-     *       Tick ISR so even if we decide to take action on an error,<br>
-     *       we don't have many options. We shouldn't shut the system down.<br>
-     */<br>
-  }<br>
-<br>
-  /* After the signal handler returns, the count of expirations of the<br>
-   * timer must be set to 0.<br>
-   */<br>
-  ptimer->overrun = 0;<br>
-}<br>
diff --git a/cpukit/posix/src/ualarm.c b/cpukit/posix/src/ualarm.c<br>
index 9607d3f..27cd2eb 100644<br>
--- a/cpukit/posix/src/ualarm.c<br>
+++ b/cpukit/posix/src/ualarm.c<br>
@@ -21,39 +21,62 @@<br>
 #include <signal.h><br>
 #include <unistd.h><br>
<br>
-#include <rtems/posix/pthreadimpl.h><br>
-#include <rtems/posix/psignalimpl.h><br>
-#include <rtems/score/threaddispatch.h><br>
 #include <rtems/score/todimpl.h><br>
 #include <rtems/score/watchdogimpl.h><br>
+#include <rtems/config.h><br>
<br>
-static void _POSIX_signals_Ualarm_TSR( Objects_Id id, void *argument );<br>
+ISR_LOCK_DEFINE( static, _POSIX_signals_Ualarm_lock, "POSIX Ualarm" )<br>
<br>
-static Watchdog_Control _POSIX_signals_Ualarm_timer = WATCHDOG_INITIALIZER(<br>
-  _POSIX_signals_Ualarm_TSR,<br>
-  0,<br>
-  NULL<br>
-);<br>
-<br>
-/*<br>
- *  _POSIX_signals_Ualarm_TSR<br>
- */<br>
+static uint32_t _POSIX_signals_Ualarm_interval;<br>
<br>
-static void _POSIX_signals_Ualarm_TSR(<br>
-  Objects_Id      id RTEMS_UNUSED,<br>
-  void           *argument RTEMS_UNUSED<br>
-)<br>
+static void _POSIX_signals_Ualarm_TSR( Watchdog_Control *the_watchdog )<br>
 {<br>
-  /*<br>
-   * Send a SIGALRM but if there is a problem, ignore it.<br>
-   * It's OK, there isn't a way this should fail.<br>
-   */<br>
-  (void) kill( getpid(), SIGALRM );<br>
+  int              status;<br>
+  ISR_lock_Context lock_context;<br>
+<br>
+  status = kill( getpid(), SIGALRM );<br>
+<br>
+  #if defined(RTEMS_DEBUG)<br>
+    /*<br>
+     *  There is no reason to think this might fail but we should be<br>
+     *  cautious.<br>
+     */<br>
+    _Assert(status == 0);<br>
+  #else<br>
+    (void) status;<br>
+  #endif<br>
+<br>
+  _ISR_lock_ISR_disable_and_acquire(<br>
+    &_POSIX_signals_Ualarm_lock,<br>
+    &lock_context<br>
+  );<br>
<br>
   /*<br>
    * If the reset interval is non-zero, reschedule ourselves.<br>
    */<br>
-  _Watchdog_Reset_ticks( &_POSIX_signals_Ualarm_timer );<br>
+  if ( _POSIX_signals_Ualarm_interval != 0 ) {<br>
+    _Watchdog_Per_CPU_insert_relative(<br>
+      the_watchdog,<br>
+      _Per_CPU_Get(),<br>
+      _POSIX_signals_Ualarm_interval<br>
+    );<br>
+  }<br>
+<br>
+  _ISR_lock_Release_and_ISR_enable(<br>
+    &_POSIX_signals_Ualarm_lock,<br>
+    &lock_context<br>
+  );<br>
+}<br>
+<br>
+static Watchdog_Control _POSIX_signals_Ualarm_watchdog = WATCHDOG_INITIALIZER(<br>
+  _POSIX_signals_Ualarm_TSR<br>
+);<br>
+<br>
+static uint32_t _POSIX_signals_Ualarm_us_to_ticks( useconds_t us )<br>
+{<br>
+  uint32_t us_per_tick = rtems_configuration_get_microseconds_per_tick();<br>
+<br>
+  return ( us + us_per_tick - 1 ) / us_per_tick;<br>
 }<br>
<br>
 useconds_t ualarm(<br>
@@ -61,51 +84,53 @@ useconds_t ualarm(<br>
   useconds_t interval<br>
 )<br>
 {<br>
-  useconds_t        remaining = 0;<br>
-  Watchdog_Control *the_timer;<br>
-  Watchdog_Interval ticks;<br>
-  Watchdog_States   state;<br>
-  struct timespec   tp;<br>
-<br>
-  the_timer = &_POSIX_signals_Ualarm_timer;<br>
-<br>
-  _Thread_Disable_dispatch();<br>
-<br>
-  state = _Watchdog_Remove_ticks( the_timer );<br>
-  if ( state == WATCHDOG_ACTIVE ) {<br>
-    /*<br>
-     *  The stop_time and start_time fields are snapshots of ticks since<br>
-     *  boot.  Since alarm() is dealing in seconds, we must account for<br>
-     *  this.<br>
-     */<br>
-<br>
-    ticks = the_timer->initial;<br>
-    ticks -= (the_timer->stop_time - the_timer->start_time);<br>
-    /* remaining is now in ticks */<br>
-<br>
-    _Timespec_From_ticks( ticks, &tp );<br>
-    remaining  = tp.tv_sec * TOD_MICROSECONDS_PER_SECOND;<br>
-    remaining += tp.tv_nsec / 1000;<br>
+  useconds_t        remaining;<br>
+  Watchdog_Control *the_watchdog;<br>
+  ISR_lock_Context  lock_context;<br>
+  ISR_lock_Context  lock_context2;<br>
+  Per_CPU_Control  *cpu;<br>
+  uint64_t          now;<br>
+  uint32_t          ticks_initial;<br>
+  uint32_t          ticks_interval;<br>
+<br>
+  the_watchdog = &_POSIX_signals_Ualarm_watchdog;<br>
+  ticks_initial = _POSIX_signals_Ualarm_us_to_ticks( useconds );<br>
+  ticks_interval = _POSIX_signals_Ualarm_us_to_ticks( interval );<br>
+<br>
+  _ISR_lock_ISR_disable_and_acquire(<br>
+    &_POSIX_signals_Ualarm_lock,<br>
+    &lock_context<br>
+  );<br>
+<br>
+  cpu = _Watchdog_Get_CPU( the_watchdog );<br>
+  _Watchdog_Per_CPU_acquire( cpu, &lock_context2 );<br>
+  now = cpu->Watchdog.ticks;<br>
+<br>
+  remaining = (useconds_t) _Watchdog_Cancel(<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+    the_watchdog,<br>
+    now<br>
+  );<br>
+<br>
+  if ( ticks_initial != 0 ) {<br>
+    _POSIX_signals_Ualarm_interval = ticks_interval;<br>
+<br>
+    cpu = _Per_CPU_Get();<br>
+    _Watchdog_Set_CPU( the_watchdog, cpu );<br>
+    _Watchdog_Insert(<br>
+      &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+      the_watchdog,<br>
+      now + ticks_initial<br>
+    );<br>
   }<br>
<br>
-  /*<br>
-   *  If useconds is non-zero, then the caller wants to schedule<br>
-   *  the alarm repeatedly at that interval.  If the interval is<br>
-   *  less than a single clock tick, then fudge it to a clock tick.<br>
-   */<br>
-  if ( useconds ) {<br>
-    Watchdog_Interval ticks;<br>
-<br>
-    tp.tv_sec = useconds / TOD_MICROSECONDS_PER_SECOND;<br>
-    tp.tv_nsec = (useconds % TOD_MICROSECONDS_PER_SECOND) * 1000;<br>
-    ticks = _Timespec_To_ticks( &tp );<br>
-    if ( ticks == 0 )<br>
-      ticks = 1;<br>
-<br>
-    _Watchdog_Insert_ticks( the_timer, _Timespec_To_ticks( &tp ) );<br>
-  }<br>
+  _Watchdog_Per_CPU_release( cpu, &lock_context2 );<br>
+  _ISR_lock_Release_and_ISR_enable(<br>
+    &_POSIX_signals_Ualarm_lock,<br>
+    &lock_context<br>
+  );<br>
<br>
-  _Thread_Enable_dispatch();<br>
+  remaining *= rtems_configuration_get_microseconds_per_tick();<br>
<br>
   return remaining;<br>
 }<br>
diff --git a/cpukit/rtems/include/rtems/rtems/ratemonimpl.h b/cpukit/rtems/include/rtems/rtems/ratemonimpl.h<br>
index 490912e..f184c44 100644<br>
--- a/cpukit/rtems/include/rtems/rtems/ratemonimpl.h<br>
+++ b/cpukit/rtems/include/rtems/rtems/ratemonimpl.h<br>
@@ -129,19 +129,13 @@ RTEMS_INLINE_ROUTINE bool _Rate_monotonic_Is_expired (<br>
 /**<br>
  * @brief Rate Monotonic Timeout<br>
  *<br>
- * This routine is invoked when the period represented<br>
- * by ID expires. If the thread which owns this period is blocked<br>
- * waiting for the period to expire, then it is readied and the<br>
- * period is restarted. If the owning thread is not waiting for the<br>
- * period to expire, then the period is placed in the EXPIRED<br>
- * state and not restarted.<br>
- *<br>
- * @param[in] id is the period id<br>
- */<br>
-void _Rate_monotonic_Timeout(<br>
-  rtems_id    id,<br>
-  void       *ignored<br>
-);<br>
+ * This routine is invoked when the period represented by the watchdog expires.<br>
+ * If the thread which owns this period is blocked waiting for the period to<br>
+ * expire, then it is readied and the period is restarted. If the owning thread<br>
+ * is not waiting for the period to expire, then the period is placed in the<br>
+ * EXPIRED state and not restarted.<br>
+ */<br>
+void _Rate_monotonic_Timeout( Watchdog_Control *watchdog );<br>
<br>
 /**<br>
  * @brief _Rate_monotonic_Get_status(<br>
@@ -165,7 +159,7 @@ bool _Rate_monotonic_Get_status(<br>
 );<br>
<br>
 /**<br>
- *  @brief Initiate Rate Monotonic Statistics<br>
+ *  @brief Restart Rate Monotonic Period<br>
  *<br>
  *  This routine is invoked when a period is initiated via an explicit<br>
  *  call to rtems_rate_monotonic_period for the period's first iteration<br>
@@ -173,7 +167,7 @@ bool _Rate_monotonic_Get_status(<br>
  *<br>
  *  @param[in] the_period points to the period being operated upon.<br>
  */<br>
-void _Rate_monotonic_Initiate_statistics(<br>
+void _Rate_monotonic_Restart(<br>
   Rate_monotonic_Control *the_period<br>
 );<br>
<br>
diff --git a/cpukit/rtems/include/rtems/rtems/timer.h b/cpukit/rtems/include/rtems/rtems/timer.h<br>
index 7cc9051..032c495 100644<br>
--- a/cpukit/rtems/include/rtems/rtems/timer.h<br>
+++ b/cpukit/rtems/include/rtems/rtems/timer.h<br>
@@ -31,7 +31,7 @@<br>
  * COPYRIGHT (c) 1989-2011.<br>
  * On-Line Applications Research Corporation (OAR).<br>
  *<br>
- * Copyright (c) 2009 embedded brains GmbH.<br>
+ * Copyright (c) 2009, 2016 embedded brains GmbH.<br>
  *<br>
  * The license and distribution terms for this file may be<br>
  * found in the file LICENSE in this distribution or at<br>
@@ -43,6 +43,7 @@<br>
<br>
 #include <rtems/rtems/attr.h><br>
 #include <rtems/rtems/status.h><br>
+#include <rtems/rtems/tasks.h><br>
 #include <rtems/rtems/types.h><br>
<br>
 #ifdef __cplusplus<br>
@@ -63,39 +64,49 @@ extern "C" {<br>
  */<br>
 /**@{*/<br>
<br>
+#define TIMER_CLASS_BIT_TIME_OF_DAY 0x1<br>
+<br>
+#define TIMER_CLASS_BIT_ON_TASK 0x2<br>
+<br>
+#define TIMER_CLASS_BIT_NOT_DORMANT 0x4<br>
+<br>
 /**<br>
  *  The following enumerated type details the classes to which a timer<br>
  *  may belong.<br>
  */<br>
 typedef enum {<br>
   /**<br>
+   * This value indicates the timer is currently not in use.<br>
+   */<br>
+  TIMER_DORMANT,<br>
+<br>
+  /**<br>
    * This value indicates the timer is currently in use as an interval<br>
    * timer which will fire in the clock tick ISR.<br>
    */<br>
-  TIMER_INTERVAL,<br>
+  TIMER_INTERVAL = TIMER_CLASS_BIT_NOT_DORMANT,<br>
<br>
   /**<br>
    * This value indicates the timer is currently in use as an interval<br>
    * timer which will fire in the timer server task.<br>
    */<br>
-  TIMER_INTERVAL_ON_TASK,<br>
+  TIMER_INTERVAL_ON_TASK =<br>
+    TIMER_CLASS_BIT_NOT_DORMANT | TIMER_CLASS_BIT_ON_TASK,<br>
<br>
   /**<br>
    * This value indicates the timer is currently in use as an time of day<br>
    * timer which will fire in the clock tick ISR.<br>
    */<br>
-  TIMER_TIME_OF_DAY,<br>
+  TIMER_TIME_OF_DAY =<br>
+    TIMER_CLASS_BIT_NOT_DORMANT | TIMER_CLASS_BIT_TIME_OF_DAY,<br>
<br>
   /**<br>
    * This value indicates the timer is currently in use as an time of day<br>
    * timer which will fire in the timer server task.<br>
    */<br>
-  TIMER_TIME_OF_DAY_ON_TASK,<br>
-<br>
-  /**<br>
-   * This value indicates the timer is currently not in use.<br>
-   */<br>
-  TIMER_DORMANT<br>
+  TIMER_TIME_OF_DAY_ON_TASK =<br>
+    TIMER_CLASS_BIT_NOT_DORMANT | TIMER_CLASS_BIT_TIME_OF_DAY |<br>
+    TIMER_CLASS_BIT_ON_TASK<br>
 } Timer_Classes;<br>
<br>
 /**<br>
@@ -124,6 +135,16 @@ typedef struct {<br>
   Watchdog_Control Ticker;<br>
   /** This field indicates what type of timer this currently is. */<br>
   Timer_Classes    the_class;<br>
+  /** This field is the timer service routine. */<br>
+  rtems_timer_service_routine_entry routine;<br>
+  /** This field is the timer service routine user data. */<br>
+  void *user_data;<br>
+  /** This field is the timer interval in ticks or seconds. */<br>
+  Watchdog_Interval initial;<br>
+  /** This field is the timer start time point in ticks. */<br>
+  Watchdog_Interval start_time;<br>
+  /** This field is the timer stop time point in ticks. */<br>
+  Watchdog_Interval stop_time;<br>
 }   Timer_Control;<br>
<br>
 /**<br>
@@ -296,16 +317,22 @@ rtems_status_code rtems_timer_reset(<br>
 );<br>
<br>
 /**<br>
- *  @brief rtems_timer_initiate_server<br>
+ *  @brief Initiates the timer server.<br>
  *<br>
- *  This routine implements the rtems_timer_initiate_server directive.<br>
- *  It creates and starts the server that executes task-based timers.<br>
+ *  This directive creates and starts the server for task-based timers.<br>
  *  It must be invoked before any task-based timers can be initiated.<br>
+ *<br>
+ *  @param priority The timer server task priority.<br>
+ *  @param stack_size The stack size in bytes for the timer server task.<br>
+ *  @param attribute_set The timer server task attributes.<br>
+ *<br>
+ *  @return This method returns RTEMS_SUCCESSFUL if successful and an<br>
+ *          error code otherwise.<br>
  */<br>
 rtems_status_code rtems_timer_initiate_server(<br>
-  uint32_t             priority,<br>
-  uint32_t             stack_size,<br>
-  rtems_attribute      attribute_set<br>
+  rtems_task_priority priority,<br>
+  size_t              stack_size,<br>
+  rtems_attribute     attribute_set<br>
 );<br>
<br>
 /**<br>
diff --git a/cpukit/rtems/include/rtems/rtems/timerimpl.h b/cpukit/rtems/include/rtems/rtems/timerimpl.h<br>
index 55be634..59ba09b 100644<br>
--- a/cpukit/rtems/include/rtems/rtems/timerimpl.h<br>
+++ b/cpukit/rtems/include/rtems/rtems/timerimpl.h<br>
@@ -10,6 +10,8 @@<br>
  * COPYRIGHT (c) 1989-2011.<br>
  * On-Line Applications Research Corporation (OAR).<br>
  *<br>
+ * Copyright (c) 2016 embedded brains GmbH.<br>
+ *<br>
  * The license and distribution terms for this file may be<br>
  * found in the file LICENSE in this distribution or at<br>
  * <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
@@ -35,81 +37,13 @@ extern "C" {<br>
  * @{<br>
  */<br>
<br>
-typedef struct Timer_server_Control Timer_server_Control;<br>
+typedef struct Timer_server_Control {<br>
+  ISR_LOCK_MEMBER( Lock )<br>
<br>
-/**<br>
- * @brief Method used for task based timers.<br>
- */<br>
-typedef void (*Timer_server_Method)(<br>
-  Timer_server_Control *timer_server,<br>
-  Timer_Control        *timer<br>
-);<br>
+  Chain_Control Pending;<br>
<br>
-typedef struct {<br>
-  /**<br>
-   * @brief This watchdog that will be registered in the system tick mechanic<br>
-   * for timer server wake-up.<br>
-   */<br>
-  Watchdog_Control System_watchdog;<br>
-<br>
-  /**<br>
-   * @brief Remaining delta of the system watchdog.<br>
-   */<br>
-  Watchdog_Interval system_watchdog_delta;<br>
-<br>
-  /**<br>
-   * @brief Unique identifier of the context which deals currently with the<br>
-   * system watchdog.<br>
-   */<br>
-  Thread_Control *system_watchdog_helper;<br>
-<br>
-  /**<br>
-   * @brief Each insert and tickle operation increases the generation count so<br>
-   * that the system watchdog dealer notices updates of the watchdog chain.<br>
-   */<br>
-  uint32_t generation;<br>
-<br>
-  /**<br>
-   * @brief Watchdog header managed by the timer server.<br>
-   */<br>
-  Watchdog_Header Header;<br>
-<br>
-  /**<br>
-   * @brief Last time snapshot of the timer server.<br>
-   *<br>
-   * The units may be ticks or seconds.<br>
-   */<br>
-  Watchdog_Interval last_snapshot;<br>
-<br>
-  /**<br>
-   * @brief Current time snapshot of the timer server.<br>
-   *<br>
-   * The units may be ticks or seconds.<br>
-   */<br>
-  Watchdog_Interval current_snapshot;<br>
-} Timer_server_Watchdogs;<br>
-<br>
-struct Timer_server_Control {<br>
-  /**<br>
-   * @brief The cancel method of the timer server.<br>
-   */<br>
-  Timer_server_Method cancel;<br>
-<br>
-  /**<br>
-   * @brief The schedule operation method of the timer server.<br>
-   */<br>
-  Timer_server_Method schedule_operation;<br>
-<br>
-  /**<br>
-   * @brief Interval watchdogs triggered by the timer server.<br>
-   */<br>
-  Timer_server_Watchdogs Interval_watchdogs;<br>
-<br>
-  /**<br>
-   * @brief TOD watchdogs triggered by the timer server.<br>
-   */<br>
-  Timer_server_Watchdogs TOD_watchdogs;<br>
-};<br>
+  Objects_Id server_id;<br>
+} Timer_server_Control;<br>
<br>
 /**<br>
  * @brief Pointer to default timer server control block.<br>
@@ -148,64 +82,124 @@ RTEMS_INLINE_ROUTINE void _Timer_Free (<br>
   _Objects_Free( &_Timer_Information, &the_timer->Object );<br>
 }<br>
<br>
-/**<br>
- *  @brief Timer_Get<br>
- *<br>
- *  This function maps timer IDs to timer control blocks.<br>
- *  If ID corresponds to a local timer, then it returns<br>
- *  the timer control pointer which maps to ID and location<br>
- *  is set to OBJECTS_LOCAL.  Otherwise, location is set<br>
- *  to OBJECTS_ERROR and the returned value is undefined.<br>
- */<br>
-RTEMS_INLINE_ROUTINE Timer_Control *_Timer_Get (<br>
+RTEMS_INLINE_ROUTINE Timer_Control *_Timer_Get(<br>
   Objects_Id         id,<br>
-  Objects_Locations *location<br>
+  Objects_Locations *location,<br>
+  ISR_lock_Context  *lock_context<br>
 )<br>
 {<br>
-  return (Timer_Control *)<br>
-    _Objects_Get( &_Timer_Information, id, location );<br>
+  return (Timer_Control *) _Objects_Get_isr_disable(<br>
+    &_Timer_Information,<br>
+    id,<br>
+    location,<br>
+    lock_context<br>
+  );<br>
 }<br>
<br>
-/**<br>
- *  @brief Timer_Is_interval_class<br>
- *<br>
- *  This function returns TRUE if the class is that of an INTERVAL<br>
- *  timer, and FALSE otherwise.<br>
- */<br>
-RTEMS_INLINE_ROUTINE bool _Timer_Is_interval_class (<br>
+RTEMS_INLINE_ROUTINE Per_CPU_Control *_Timer_Acquire_critical(<br>
+  Timer_Control    *the_timer,<br>
+  ISR_lock_Context *lock_context<br>
+)<br>
+{<br>
+  Per_CPU_Control *cpu;<br>
+<br>
+  cpu = _Watchdog_Get_CPU( &the_timer->Ticker );<br>
+  _Watchdog_Per_CPU_acquire( cpu, lock_context );<br>
+<br>
+  return cpu;<br>
+}<br>
+<br>
+RTEMS_INLINE_ROUTINE void _Timer_Release(<br>
+  Per_CPU_Control  *cpu,<br>
+  ISR_lock_Context *lock_context<br>
+)<br>
+{<br>
+  _Watchdog_Per_CPU_release( cpu, lock_context );<br>
+  _ISR_lock_ISR_enable( lock_context );<br>
+}<br>
+<br>
+RTEMS_INLINE_ROUTINE bool _Timer_Is_interval_class(<br>
   Timer_Classes the_class<br>
 )<br>
 {<br>
-  return (the_class == TIMER_INTERVAL) || (the_class == TIMER_INTERVAL_ON_TASK);<br>
+  Timer_Classes mask =<br>
+    TIMER_CLASS_BIT_NOT_DORMANT | TIMER_CLASS_BIT_TIME_OF_DAY;<br>
+<br>
+  return ( the_class & mask ) == TIMER_CLASS_BIT_NOT_DORMANT;<br>
 }<br>
<br>
-/**<br>
- *  @brief Timer_Is_time_of_day_class<br>
- *<br>
- *  This function returns TRUE if the class is that of an INTERVAL<br>
- *  timer, and FALSE otherwise.<br>
- */<br>
-RTEMS_INLINE_ROUTINE bool _Timer_Is_timer_of_day_class (<br>
+RTEMS_INLINE_ROUTINE bool _Timer_Is_on_task_class(<br>
   Timer_Classes the_class<br>
 )<br>
 {<br>
-  return ( the_class == TIMER_TIME_OF_DAY );<br>
+  Timer_Classes mask =<br>
+    TIMER_CLASS_BIT_NOT_DORMANT | TIMER_CLASS_BIT_ON_TASK;<br>
+<br>
+  return ( the_class & mask ) == mask;<br>
 }<br>
<br>
-/**<br>
- *  @brief Timer_Is_dormant_class<br>
- *<br>
- *  This function returns TRUE if the class is that of a DORMANT<br>
- *  timer, and FALSE otherwise.<br>
- */<br>
-RTEMS_INLINE_ROUTINE bool _Timer_Is_dormant_class (<br>
+RTEMS_INLINE_ROUTINE Per_CPU_Watchdog_index _Timer_Watchdog_header_index(<br>
   Timer_Classes the_class<br>
 )<br>
 {<br>
-  return ( the_class == TIMER_DORMANT );<br>
+  return ( the_class & TIMER_CLASS_BIT_TIME_OF_DAY );<br>
+}<br>
+<br>
+RTEMS_INLINE_ROUTINE Watchdog_Interval _Timer_Get_CPU_ticks(<br>
+  const Per_CPU_Control *cpu<br>
+)<br>
+{<br>
+  return (Watchdog_Interval) cpu->Watchdog.ticks;<br>
 }<br>
<br>
-void _Timer_Cancel( Timer_Control *the_timer );<br>
+rtems_status_code _Timer_Fire(<br>
+  rtems_id                           id,<br>
+  rtems_interval                     interval,<br>
+  rtems_timer_service_routine_entry  routine,<br>
+  void                              *user_data,<br>
+  Timer_Classes                      the_class,<br>
+  Watchdog_Service_routine_entry     adaptor<br>
+);<br>
+<br>
+rtems_status_code _Timer_Fire_after(<br>
+  rtems_id                           id,<br>
+  rtems_interval                     ticks,<br>
+  rtems_timer_service_routine_entry  routine,<br>
+  void                              *user_data,<br>
+  Timer_Classes                      the_class,<br>
+  Watchdog_Service_routine_entry     adaptor<br>
+);<br>
+<br>
+rtems_status_code _Timer_Fire_when(<br>
+  rtems_id                           id,<br>
+  const rtems_time_of_day           *wall_time,<br>
+  rtems_timer_service_routine_entry  routine,<br>
+  void                              *user_data,<br>
+  Timer_Classes                      the_class,<br>
+  Watchdog_Service_routine_entry     adaptor<br>
+);<br>
+<br>
+void _Timer_Cancel( Per_CPU_Control *cpu, Timer_Control *the_timer );<br>
+<br>
+void _Timer_Routine_adaptor( Watchdog_Control *the_watchdog );<br>
+<br>
+void _Timer_server_Routine_adaptor( Watchdog_Control *the_watchdog );<br>
+<br>
+RTEMS_INLINE_ROUTINE void _Timer_server_Acquire_critical(<br>
+  Timer_server_Control *timer_server,<br>
+  ISR_lock_Context     *lock_context<br>
+)<br>
+{<br>
+  _ISR_lock_Acquire( &timer_server->Lock, lock_context );<br>
+}<br>
+<br>
+RTEMS_INLINE_ROUTINE void _Timer_server_Release_critical(<br>
+  Timer_server_Control *timer_server,<br>
+  ISR_lock_Context     *lock_context<br>
+)<br>
+{<br>
+  _ISR_lock_Release( &timer_server->Lock, lock_context );<br>
+}<br>
<br>
 /**@}*/<br>
<br>
diff --git a/cpukit/rtems/src/eventseize.c b/cpukit/rtems/src/eventseize.c<br>
index 3dc554f..0be6bd6 100644<br>
--- a/cpukit/rtems/src/eventseize.c<br>
+++ b/cpukit/rtems/src/eventseize.c<br>
@@ -90,13 +90,12 @@ void _Event_Seize(<br>
<br>
   if ( ticks ) {<br>
     _Thread_Wait_set_timeout_code( executing, RTEMS_TIMEOUT );<br>
-    _Watchdog_Initialize(<br>
-      &executing->Timer,<br>
+    _Thread_Timer_insert_relative(<br>
+      executing,<br>
+      cpu_self,<br>
       _Thread_Timeout,<br>
-      0,<br>
-      executing<br>
+      ticks<br>
     );<br>
-    _Watchdog_Insert_ticks( &executing->Timer, ticks );<br>
   }<br>
<br>
   _Thread_Set_state( executing, block_state );<br>
@@ -113,7 +112,7 @@ void _Event_Seize(<br>
     wait_class | THREAD_WAIT_STATE_BLOCKED<br>
   );<br>
   if ( !success ) {<br>
-    _Watchdog_Remove_ticks( &executing->Timer );<br>
+    _Thread_Timer_remove( executing );<br>
     _Thread_Unblock( executing );<br>
   }<br>
<br>
diff --git a/cpukit/rtems/src/eventsurrender.c b/cpukit/rtems/src/eventsurrender.c<br>
index 5726cc8..7c4fe2e 100644<br>
--- a/cpukit/rtems/src/eventsurrender.c<br>
+++ b/cpukit/rtems/src/eventsurrender.c<br>
@@ -121,7 +121,7 @@ void _Event_Surrender(<br>
     cpu_self = _Thread_Dispatch_disable_critical( lock_context );<br>
     _Thread_Lock_release_default( the_thread, lock_context );<br>
<br>
-    _Watchdog_Remove_ticks( &the_thread->Timer );<br>
+    _Thread_Timer_remove( the_thread );<br>
     _Thread_Unblock( the_thread );<br>
<br>
     _Thread_Dispatch_enable( cpu_self );<br>
diff --git a/cpukit/rtems/src/ratemoncancel.c b/cpukit/rtems/src/ratemoncancel.c<br>
index 67b230f..2e4d532 100644<br>
--- a/cpukit/rtems/src/ratemoncancel.c<br>
+++ b/cpukit/rtems/src/ratemoncancel.c<br>
@@ -29,6 +29,7 @@ rtems_status_code rtems_rate_monotonic_cancel(<br>
 {<br>
   Rate_monotonic_Control *the_period;<br>
   Objects_Locations       location;<br>
+  ISR_Level               level;<br>
<br>
   the_period = _Rate_monotonic_Get( id, &location );<br>
   switch ( location ) {<br>
@@ -38,7 +39,9 @@ rtems_status_code rtems_rate_monotonic_cancel(<br>
         _Objects_Put( &the_period->Object );<br>
         return RTEMS_NOT_OWNER_OF_RESOURCE;<br>
       }<br>
-      _Watchdog_Remove_ticks( &the_period->Timer );<br>
+      _ISR_Disable( level );<br>
+      _Watchdog_Per_CPU_remove_relative( &the_period->Timer );<br>
+      _ISR_Enable( level );<br>
       the_period->state = RATE_MONOTONIC_INACTIVE;<br>
       _Scheduler_Release_job( the_period->owner, 0 );<br>
       _Objects_Put( &the_period->Object );<br>
diff --git a/cpukit/rtems/src/ratemoncreate.c b/cpukit/rtems/src/ratemoncreate.c<br>
index 1ac4a36..1a5c9b2 100644<br>
--- a/cpukit/rtems/src/ratemoncreate.c<br>
+++ b/cpukit/rtems/src/ratemoncreate.c<br>
@@ -65,7 +65,8 @@ rtems_status_code rtems_rate_monotonic_create(<br>
   the_period->owner = _Thread_Get_executing();<br>
   the_period->state = RATE_MONOTONIC_INACTIVE;<br>
<br>
-  _Watchdog_Preinitialize( &the_period->Timer );<br>
+  _Watchdog_Preinitialize( &the_period->Timer, _Per_CPU_Get_by_index( 0 ) );<br>
+  _Watchdog_Initialize( &the_period->Timer, _Rate_monotonic_Timeout );<br>
<br>
   _Rate_monotonic_Reset_statistics( the_period );<br>
<br>
diff --git a/cpukit/rtems/src/ratemondelete.c b/cpukit/rtems/src/ratemondelete.c<br>
index 77cf3fe..09b9ab6 100644<br>
--- a/cpukit/rtems/src/ratemondelete.c<br>
+++ b/cpukit/rtems/src/ratemondelete.c<br>
@@ -29,6 +29,7 @@ rtems_status_code rtems_rate_monotonic_delete(<br>
 {<br>
   Rate_monotonic_Control *the_period;<br>
   Objects_Locations       location;<br>
+  ISR_Level               level;<br>
<br>
   _Objects_Allocator_lock();<br>
   the_period = _Rate_monotonic_Get( id, &location );<br>
@@ -37,7 +38,9 @@ rtems_status_code rtems_rate_monotonic_delete(<br>
     case OBJECTS_LOCAL:<br>
       _Scheduler_Release_job( the_period->owner, 0 );<br>
       _Objects_Close( &_Rate_monotonic_Information, &the_period->Object );<br>
-      _Watchdog_Remove_ticks( &the_period->Timer );<br>
+      _ISR_Disable( level );<br>
+      _Watchdog_Per_CPU_remove_relative( &the_period->Timer );<br>
+      _ISR_Enable( level );<br>
       the_period->state = RATE_MONOTONIC_INACTIVE;<br>
       _Objects_Put( &the_period->Object );<br>
       _Rate_monotonic_Free( the_period );<br>
diff --git a/cpukit/rtems/src/ratemonperiod.c b/cpukit/rtems/src/ratemonperiod.c<br>
index 6afe101..58be148 100644<br>
--- a/cpukit/rtems/src/ratemonperiod.c<br>
+++ b/cpukit/rtems/src/ratemonperiod.c<br>
@@ -77,12 +77,11 @@ bool _Rate_monotonic_Get_status(<br>
   return true;<br>
 }<br>
<br>
-void _Rate_monotonic_Initiate_statistics(<br>
-  Rate_monotonic_Control *the_period<br>
-)<br>
+void _Rate_monotonic_Restart( Rate_monotonic_Control *the_period )<br>
 {<br>
   Thread_Control    *owning_thread = the_period->owner;<br>
   Timestamp_Control  uptime;<br>
+  ISR_Level          level;<br>
<br>
   _TOD_Get_uptime( &uptime );<br>
<br>
@@ -113,7 +112,15 @@ void _Rate_monotonic_Initiate_statistics(<br>
     _Timestamp_Add_to( &the_period->cpu_usage_period_initiated, &ran );<br>
   }<br>
<br>
-  _Scheduler_Release_job( the_period->owner, the_period->next_length );<br>
+  _Scheduler_Release_job( owning_thread, the_period->next_length );<br>
+<br>
+  _ISR_Disable( level );<br>
+  _Watchdog_Per_CPU_insert_relative(<br>
+    &the_period->Timer,<br>
+    _Per_CPU_Get(),<br>
+    the_period->next_length<br>
+  );<br>
+  _ISR_Enable( level );<br>
 }<br>
<br>
 static void _Rate_monotonic_Update_statistics(<br>
@@ -238,22 +245,9 @@ rtems_status_code rtems_rate_monotonic_period(<br>
       if ( the_period->state == RATE_MONOTONIC_INACTIVE ) {<br>
         _ISR_Enable( level );<br>
<br>
-        the_period->next_length = length;<br>
-<br>
-        /*<br>
-         *  Baseline statistics information for the beginning of a period.<br>
-         */<br>
-        _Rate_monotonic_Initiate_statistics( the_period );<br>
-<br>
         the_period->state = RATE_MONOTONIC_ACTIVE;<br>
-        _Watchdog_Initialize(<br>
-          &the_period->Timer,<br>
-          _Rate_monotonic_Timeout,<br>
-          id,<br>
-          NULL<br>
-        );<br>
-<br>
-        _Watchdog_Insert_ticks( &the_period->Timer, length );<br>
+        the_period->next_length = length;<br>
+        _Rate_monotonic_Restart( the_period );<br>
         _Objects_Put( &the_period->Object );<br>
         return RTEMS_SUCCESSFUL;<br>
       }<br>
@@ -308,7 +302,11 @@ rtems_status_code rtems_rate_monotonic_period(<br>
         the_period->state = RATE_MONOTONIC_ACTIVE;<br>
         the_period->next_length = length;<br>
<br>
-        _Watchdog_Insert_ticks( &the_period->Timer, length );<br>
+        _Watchdog_Per_CPU_insert_relative(<br>
+          &the_period->Timer,<br>
+          _Per_CPU_Get(),<br>
+          length<br>
+        );<br>
         _Scheduler_Release_job( the_period->owner, the_period->next_length );<br>
         _Objects_Put( &the_period->Object );<br>
         return RTEMS_TIMEOUT;<br>
diff --git a/cpukit/rtems/src/ratemontimeout.c b/cpukit/rtems/src/ratemontimeout.c<br>
index 08f9bd1..7c25595 100644<br>
--- a/cpukit/rtems/src/ratemontimeout.c<br>
+++ b/cpukit/rtems/src/ratemontimeout.c<br>
@@ -22,46 +22,30 @@<br>
 #include <rtems/score/threadimpl.h><br>
 #include <rtems/score/watchdogimpl.h><br>
<br>
-void _Rate_monotonic_Timeout(<br>
-  Objects_Id  id,<br>
-  void       *ignored<br>
-)<br>
+void _Rate_monotonic_Timeout( Watchdog_Control *watchdog )<br>
 {<br>
   Rate_monotonic_Control *the_period;<br>
-  Objects_Locations       location;<br>
   Thread_Control         *the_thread;<br>
<br>
   /*<br>
    *  When we get here, the Timer is already off the chain so we do not<br>
    *  have to worry about that -- hence no _Watchdog_Remove().<br>
    */<br>
-  the_period = _Rate_monotonic_Get( id, &location );<br>
-  switch ( location ) {<br>
-<br>
-    case OBJECTS_LOCAL:<br>
-      the_thread = the_period->owner;<br>
-      if ( _States_Is_waiting_for_period( the_thread->current_state ) &&<br>
-            the_thread->Wait.id == the_period->Object.id ) {<br>
-        _Thread_Unblock( the_thread );<br>
-<br>
-        _Rate_monotonic_Initiate_statistics( the_period );<br>
-<br>
-        _Watchdog_Insert_ticks( &the_period->Timer, the_period->next_length );<br>
-      } else if ( the_period->state == RATE_MONOTONIC_OWNER_IS_BLOCKING ) {<br>
-        the_period->state = RATE_MONOTONIC_EXPIRED_WHILE_BLOCKING;<br>
-<br>
-        _Rate_monotonic_Initiate_statistics( the_period );<br>
-<br>
-        _Watchdog_Insert_ticks( &the_period->Timer, the_period->next_length );<br>
-      } else<br>
-        the_period->state = RATE_MONOTONIC_EXPIRED;<br>
-      _Objects_Put_without_thread_dispatch( &the_period->Object );<br>
-      break;<br>
-<br>
-#if defined(RTEMS_MULTIPROCESSING)<br>
-    case OBJECTS_REMOTE:  /* impossible */<br>
-#endif<br>
-    case OBJECTS_ERROR:<br>
-      break;<br>
+  the_period = RTEMS_CONTAINER_OF( watchdog, Rate_monotonic_Control, Timer );<br>
+  the_thread = the_period->owner;<br>
+<br>
+  _Thread_Disable_dispatch();<br>
+<br>
+  if ( _States_Is_waiting_for_period( the_thread->current_state ) &&<br>
+        the_thread->Wait.id == the_period->Object.id ) {<br>
+    _Thread_Unblock( the_thread );<br>
+    _Rate_monotonic_Restart( the_period );<br>
+  } else if ( the_period->state == RATE_MONOTONIC_OWNER_IS_BLOCKING ) {<br>
+    the_period->state = RATE_MONOTONIC_EXPIRED_WHILE_BLOCKING;<br>
+    _Rate_monotonic_Restart( the_period );<br>
+  } else {<br>
+    the_period->state = RATE_MONOTONIC_EXPIRED;<br>
   }<br>
+<br>
+  _Thread_Unnest_dispatch();<br>
 }<br>
diff --git a/cpukit/rtems/src/taskwakeafter.c b/cpukit/rtems/src/taskwakeafter.c<br>
index b7f328f..fa5f6f4 100644<br>
--- a/cpukit/rtems/src/taskwakeafter.c<br>
+++ b/cpukit/rtems/src/taskwakeafter.c<br>
@@ -41,13 +41,12 @@ rtems_status_code rtems_task_wake_after(<br>
     } else {<br>
       _Thread_Set_state( executing, STATES_DELAYING );<br>
       _Thread_Wait_flags_set( executing, THREAD_WAIT_STATE_BLOCKED );<br>
-      _Watchdog_Initialize(<br>
-        &executing->Timer,<br>
+      _Thread_Timer_insert_relative(<br>
+        executing,<br>
+        cpu_self,<br>
         _Thread_Timeout,<br>
-        0,<br>
-        executing<br>
+        ticks<br>
       );<br>
-      _Watchdog_Insert_ticks( &executing->Timer, ticks );<br>
     }<br>
   _Thread_Dispatch_enable( cpu_self );<br>
   return RTEMS_SUCCESSFUL;<br>
diff --git a/cpukit/rtems/src/taskwakewhen.c b/cpukit/rtems/src/taskwakewhen.c<br>
index cf0b303..5d6d45a 100644<br>
--- a/cpukit/rtems/src/taskwakewhen.c<br>
+++ b/cpukit/rtems/src/taskwakewhen.c<br>
@@ -28,9 +28,9 @@ rtems_status_code rtems_task_wake_when(<br>
   rtems_time_of_day *time_buffer<br>
 )<br>
 {<br>
-  Watchdog_Interval   seconds;<br>
-  Thread_Control     *executing;<br>
-  Per_CPU_Control    *cpu_self;<br>
+  uint32_t         seconds;<br>
+  Thread_Control  *executing;<br>
+  Per_CPU_Control *cpu_self;<br>
<br>
   if ( !_TOD_Is_set() )<br>
     return RTEMS_NOT_DEFINED;<br>
@@ -52,15 +52,11 @@ rtems_status_code rtems_task_wake_when(<br>
     executing = _Thread_Executing;<br>
     _Thread_Set_state( executing, STATES_WAITING_FOR_TIME );<br>
     _Thread_Wait_flags_set( executing, THREAD_WAIT_STATE_BLOCKED );<br>
-    _Watchdog_Initialize(<br>
-      &executing->Timer,<br>
+    _Thread_Timer_insert_absolute(<br>
+      executing,<br>
+      cpu_self,<br>
       _Thread_Timeout,<br>
-      0,<br>
-      executing<br>
-    );<br>
-    _Watchdog_Insert_seconds(<br>
-      &executing->Timer,<br>
-      seconds - _TOD_Seconds_since_epoch()<br>
+      _Watchdog_Ticks_from_seconds( seconds )<br>
     );<br>
   _Thread_Dispatch_enable( cpu_self );<br>
   return RTEMS_SUCCESSFUL;<br>
diff --git a/cpukit/rtems/src/timercancel.c b/cpukit/rtems/src/timercancel.c<br>
index 1e737a2..5d4343e 100644<br>
--- a/cpukit/rtems/src/timercancel.c<br>
+++ b/cpukit/rtems/src/timercancel.c<br>
@@ -14,39 +14,24 @@<br>
 #include "config.h"<br>
 #endif<br>
<br>
-#include <rtems/system.h><br>
-#include <rtems/rtems/status.h><br>
-#include <rtems/rtems/support.h><br>
-#include <rtems/score/thread.h><br>
 #include <rtems/rtems/timerimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
-<br>
-/*<br>
- *  rtems_timer_cancel<br>
- *<br>
- *  This directive allows a thread to cancel a timer.<br>
- *<br>
- *  Input parameters:<br>
- *    id - timer id<br>
- *<br>
- *  Output parameters:<br>
- *    RTEMS_SUCCESSFUL - if successful<br>
- *    error code       - if unsuccessful<br>
- */<br>
<br>
 rtems_status_code rtems_timer_cancel(<br>
   rtems_id id<br>
 )<br>
 {<br>
-  Timer_Control   *the_timer;<br>
-  Objects_Locations       location;<br>
+  Timer_Control     *the_timer;<br>
+  Objects_Locations  location;<br>
+  ISR_lock_Context   lock_context;<br>
+  Per_CPU_Control   *cpu;<br>
<br>
-  the_timer = _Timer_Get( id, &location );<br>
+  the_timer = _Timer_Get( id, &location, &lock_context );<br>
   switch ( location ) {<br>
<br>
     case OBJECTS_LOCAL:<br>
-      _Timer_Cancel( the_timer );<br>
-      _Objects_Put( &the_timer->Object );<br>
+      cpu = _Timer_Acquire_critical( the_timer, &lock_context );<br>
+      _Timer_Cancel( cpu, the_timer );<br>
+      _Timer_Release( cpu, &lock_context );<br>
       return RTEMS_SUCCESSFUL;<br>
<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
diff --git a/cpukit/rtems/src/timercreate.c b/cpukit/rtems/src/timercreate.c<br>
index 5c718b9..80c1356 100644<br>
--- a/cpukit/rtems/src/timercreate.c<br>
+++ b/cpukit/rtems/src/timercreate.c<br>
@@ -18,40 +18,173 @@<br>
 #include "config.h"<br>
 #endif<br>
<br>
-#include <rtems/system.h><br>
+#include <rtems/rtems/timerimpl.h><br>
+#include <rtems/rtems/clock.h><br>
 #include <rtems/rtems/status.h><br>
 #include <rtems/rtems/support.h><br>
 #include <rtems/score/assert.h><br>
+#include <rtems/score/chainimpl.h><br>
 #include <rtems/score/thread.h><br>
-#include <rtems/rtems/timerimpl.h><br>
+#include <rtems/score/todimpl.h><br>
 #include <rtems/score/watchdogimpl.h><br>
<br>
-void _Timer_Cancel( Timer_Control *the_timer )<br>
+RTEMS_STATIC_ASSERT(<br>
+  PER_CPU_WATCHDOG_ABSOLUTE == TIMER_CLASS_BIT_TIME_OF_DAY,<br>
+  TIMER_CLASS_BIT_TIME_OF_DAY<br>
+);<br>
+<br>
+void _Timer_Routine_adaptor( Watchdog_Control *the_watchdog )<br>
 {<br>
-  Timer_server_Control *timer_server;<br>
-  ISR_Level level;<br>
+  Timer_Control   *the_timer;<br>
+  Per_CPU_Control *cpu;<br>
<br>
-  /* The timer class must not change during the cancel operation */<br>
-  _ISR_Disable( level );<br>
+  the_timer = RTEMS_CONTAINER_OF( the_watchdog, Timer_Control, Ticker );<br>
+  cpu = _Watchdog_Get_CPU( &the_timer->Ticker );<br>
+  the_timer->stop_time = _Timer_Get_CPU_ticks( cpu );<br>
<br>
-  switch ( the_timer->the_class ) {<br>
-    case TIMER_INTERVAL:<br>
-      _Watchdog_Remove_ticks( &the_timer->Ticker );<br>
-      break;<br>
-    case TIMER_TIME_OF_DAY:<br>
-      _Watchdog_Remove_seconds( &the_timer->Ticker );<br>
-      break;<br>
-    case TIMER_INTERVAL_ON_TASK:<br>
-    case TIMER_TIME_OF_DAY_ON_TASK:<br>
-      timer_server = _Timer_server;<br>
-      (*timer_server->cancel)( timer_server, the_timer );<br>
-      break;<br>
-    default:<br>
-      _Assert( the_timer->the_class == TIMER_DORMANT );<br>
+  ( *the_timer->routine )( the_timer->Object.id, the_timer->user_data );<br>
+}<br>
+<br>
+rtems_status_code _Timer_Fire(<br>
+  rtems_id                           id,<br>
+  rtems_interval                     interval,<br>
+  rtems_timer_service_routine_entry  routine,<br>
+  void                              *user_data,<br>
+  Timer_Classes                      the_class,<br>
+  Watchdog_Service_routine_entry     adaptor<br>
+)<br>
+{<br>
+  Timer_Control        *the_timer;<br>
+  Objects_Locations     location;<br>
+  ISR_lock_Context      lock_context;<br>
+  Per_CPU_Control      *cpu;<br>
+<br>
+  the_timer = _Timer_Get( id, &location, &lock_context );<br>
+  switch ( location ) {<br>
+<br>
+    case OBJECTS_LOCAL:<br>
+      cpu = _Timer_Acquire_critical( the_timer, &lock_context );<br>
+      _Timer_Cancel( cpu, the_timer );<br>
+      _Watchdog_Initialize( &the_timer->Ticker, adaptor );<br>
+      the_timer->the_class = the_class;<br>
+      the_timer->routine = routine;<br>
+      the_timer->user_data = user_data;<br>
+      the_timer->initial = interval;<br>
+      the_timer->start_time = _Timer_Get_CPU_ticks( cpu );<br>
+<br>
+      if ( _Timer_Is_interval_class( the_class ) ) {<br>
+        _Watchdog_Insert(<br>
+          &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+          &the_timer->Ticker,<br>
+          cpu->Watchdog.ticks + interval<br>
+        );<br>
+      } else {<br>
+        _Watchdog_Insert(<br>
+          &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_ABSOLUTE ],<br>
+          &the_timer->Ticker,<br>
+          _Watchdog_Ticks_from_seconds( interval )<br>
+        );<br>
+      }<br>
+<br>
+      _Timer_Release( cpu, &lock_context );<br>
+      return RTEMS_SUCCESSFUL;<br>
+<br>
+#if defined(RTEMS_MULTIPROCESSING)<br>
+    case OBJECTS_REMOTE:            /* should never return this */<br>
+#endif<br>
+    case OBJECTS_ERROR:<br>
       break;<br>
   }<br>
<br>
-  _ISR_Enable( level );<br>
+  return RTEMS_INVALID_ID;<br>
+}<br>
+<br>
+rtems_status_code _Timer_Fire_after(<br>
+  rtems_id                           id,<br>
+  rtems_interval                     ticks,<br>
+  rtems_timer_service_routine_entry  routine,<br>
+  void                              *user_data,<br>
+  Timer_Classes                      the_class,<br>
+  Watchdog_Service_routine_entry     adaptor<br>
+)<br>
+{<br>
+  if ( ticks == 0 )<br>
+    return RTEMS_INVALID_NUMBER;<br>
+<br>
+  if ( !routine )<br>
+    return RTEMS_INVALID_ADDRESS;<br>
+<br>
+  return _Timer_Fire(<br>
+    id,<br>
+    ticks,<br>
+    routine,<br>
+    user_data,<br>
+    the_class,<br>
+    adaptor<br>
+  );<br>
+}<br>
+<br>
+rtems_status_code _Timer_Fire_when(<br>
+  rtems_id                           id,<br>
+  const rtems_time_of_day           *wall_time,<br>
+  rtems_timer_service_routine_entry  routine,<br>
+  void                              *user_data,<br>
+  Timer_Classes                      the_class,<br>
+  Watchdog_Service_routine_entry     adaptor<br>
+)<br>
+{<br>
+  rtems_interval seconds;<br>
+<br>
+  if ( !_TOD_Is_set() )<br>
+    return RTEMS_NOT_DEFINED;<br>
+<br>
+  if ( !routine )<br>
+    return RTEMS_INVALID_ADDRESS;<br>
+<br>
+  if ( !_TOD_Validate( wall_time ) )<br>
+    return RTEMS_INVALID_CLOCK;<br>
+<br>
+  seconds = _TOD_To_seconds( wall_time );<br>
+  if ( seconds <= _TOD_Seconds_since_epoch() )<br>
+    return RTEMS_INVALID_CLOCK;<br>
+<br>
+  return _Timer_Fire(<br>
+    id,<br>
+    seconds,<br>
+    routine,<br>
+    user_data,<br>
+    the_class,<br>
+    adaptor<br>
+  );<br>
+}<br>
+<br>
+void _Timer_Cancel( Per_CPU_Control *cpu, Timer_Control *the_timer )<br>
+{<br>
+  Timer_Classes the_class;<br>
+<br>
+  the_class = the_timer->the_class;<br>
+<br>
+  if ( _Watchdog_Is_scheduled( &the_timer->Ticker ) ) {<br>
+    the_timer->stop_time = _Timer_Get_CPU_ticks( cpu );<br>
+    _Watchdog_Remove(<br>
+      &cpu->Watchdog.Header[ _Timer_Watchdog_header_index( the_class ) ],<br>
+      &the_timer->Ticker<br>
+    );<br>
+  } else if ( _Timer_Is_on_task_class( the_class ) ) {<br>
+    Timer_server_Control *timer_server;<br>
+    ISR_lock_Context      lock_context;<br>
+<br>
+    timer_server = _Timer_server;<br>
+    _Assert( timer_server != NULL );<br>
+    _Timer_server_Acquire_critical( timer_server, &lock_context );<br>
+<br>
+    if ( _Watchdog_Get_state( &the_timer->Ticker ) == WATCHDOG_PENDING ) {<br>
+      _Watchdog_Set_state( &the_timer->Ticker, WATCHDOG_INACTIVE );<br>
+      _Chain_Extract_unprotected( &the_timer->Ticker.Node.Chain );<br>
+    }<br>
+<br>
+    _Timer_server_Release_critical( timer_server, &lock_context );<br>
+  }<br>
 }<br>
<br>
 rtems_status_code rtems_timer_create(<br>
@@ -75,7 +208,7 @@ rtems_status_code rtems_timer_create(<br>
   }<br>
<br>
   the_timer->the_class = TIMER_DORMANT;<br>
-  _Watchdog_Preinitialize( &the_timer->Ticker );<br>
+  _Watchdog_Preinitialize( &the_timer->Ticker, _Per_CPU_Get_snapshot() );<br>
<br>
   _Objects_Open(<br>
     &_Timer_Information,<br>
diff --git a/cpukit/rtems/src/timerdelete.c b/cpukit/rtems/src/timerdelete.c<br>
index 0849ec5..9c41397 100644<br>
--- a/cpukit/rtems/src/timerdelete.c<br>
+++ b/cpukit/rtems/src/timerdelete.c<br>
@@ -18,12 +18,7 @@<br>
 #include "config.h"<br>
 #endif<br>
<br>
-#include <rtems/system.h><br>
-#include <rtems/rtems/status.h><br>
-#include <rtems/rtems/support.h><br>
-#include <rtems/score/thread.h><br>
 #include <rtems/rtems/timerimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
<br>
 rtems_status_code rtems_timer_delete(<br>
   rtems_id id<br>
@@ -31,15 +26,18 @@ rtems_status_code rtems_timer_delete(<br>
 {<br>
   Timer_Control     *the_timer;<br>
   Objects_Locations  location;<br>
+  ISR_lock_Context   lock_context;<br>
+  Per_CPU_Control   *cpu;<br>
<br>
   _Objects_Allocator_lock();<br>
-  the_timer = _Timer_Get( id, &location );<br>
+  the_timer = _Timer_Get( id, &location, &lock_context );<br>
   switch ( location ) {<br>
<br>
     case OBJECTS_LOCAL:<br>
       _Objects_Close( &_Timer_Information, &the_timer->Object );<br>
-      _Timer_Cancel( the_timer );<br>
-      _Objects_Put( &the_timer->Object );<br>
+      cpu = _Timer_Acquire_critical( the_timer, &lock_context );<br>
+      _Timer_Cancel( cpu, the_timer );<br>
+      _Timer_Release( cpu, &lock_context );<br>
       _Timer_Free( the_timer );<br>
       _Objects_Allocator_unlock();<br>
       return RTEMS_SUCCESSFUL;<br>
diff --git a/cpukit/rtems/src/timerfireafter.c b/cpukit/rtems/src/timerfireafter.c<br>
index 84cf46b..82bd878 100644<br>
--- a/cpukit/rtems/src/timerfireafter.c<br>
+++ b/cpukit/rtems/src/timerfireafter.c<br>
@@ -18,12 +18,7 @@<br>
 #include "config.h"<br>
 #endif<br>
<br>
-#include <rtems/system.h><br>
-#include <rtems/rtems/status.h><br>
-#include <rtems/rtems/support.h><br>
-#include <rtems/score/thread.h><br>
 #include <rtems/rtems/timerimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
<br>
 rtems_status_code rtems_timer_fire_after(<br>
   rtems_id                           id,<br>
@@ -32,55 +27,12 @@ rtems_status_code rtems_timer_fire_after(<br>
   void                              *user_data<br>
 )<br>
 {<br>
-  Timer_Control      *the_timer;<br>
-  Objects_Locations   location;<br>
-  ISR_Level           level;<br>
-<br>
-  if ( ticks == 0 )<br>
-    return RTEMS_INVALID_NUMBER;<br>
-<br>
-  if ( !routine )<br>
-    return RTEMS_INVALID_ADDRESS;<br>
-<br>
-  the_timer = _Timer_Get( id, &location );<br>
-  switch ( location ) {<br>
-<br>
-    case OBJECTS_LOCAL:<br>
-      _Timer_Cancel( the_timer );<br>
-<br>
-      _ISR_Disable( level );<br>
-<br>
-        /*<br>
-         *  Check to see if the watchdog has just been inserted by a<br>
-         *  higher priority interrupt.  If so, abandon this insert.<br>
-         */<br>
-<br>
-        if ( the_timer->Ticker.state != WATCHDOG_INACTIVE ) {<br>
-          _ISR_Enable( level );<br>
-          _Objects_Put( &the_timer->Object );<br>
-          return RTEMS_SUCCESSFUL;<br>
-        }<br>
-<br>
-        /*<br>
-         *  OK.  Now we now the timer was not rescheduled by an interrupt<br>
-         *  so we can atomically initialize it as in use.<br>
-         */<br>
-<br>
-        the_timer->the_class = TIMER_INTERVAL;<br>
-        _Watchdog_Initialize( &the_timer->Ticker, routine, id, user_data );<br>
-      _ISR_Enable( level );<br>
-<br>
-<br>
-      _Watchdog_Insert_ticks( &the_timer->Ticker, ticks );<br>
-      _Objects_Put( &the_timer->Object );<br>
-      return RTEMS_SUCCESSFUL;<br>
-<br>
-#if defined(RTEMS_MULTIPROCESSING)<br>
-    case OBJECTS_REMOTE:            /* should never return this */<br>
-#endif<br>
-    case OBJECTS_ERROR:<br>
-      break;<br>
-  }<br>
-<br>
-  return RTEMS_INVALID_ID;<br>
+  return _Timer_Fire_after(<br>
+    id,<br>
+    ticks,<br>
+    routine,<br>
+    user_data,<br>
+    TIMER_INTERVAL,<br>
+    _Timer_Routine_adaptor<br>
+  );<br>
 }<br>
diff --git a/cpukit/rtems/src/timerfirewhen.c b/cpukit/rtems/src/timerfirewhen.c<br>
index 1acbaf9..eddeb16 100644<br>
--- a/cpukit/rtems/src/timerfirewhen.c<br>
+++ b/cpukit/rtems/src/timerfirewhen.c<br>
@@ -19,9 +19,6 @@<br>
 #endif<br>
<br>
 #include <rtems/rtems/timerimpl.h><br>
-#include <rtems/rtems/clock.h><br>
-#include <rtems/score/todimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
<br>
 rtems_status_code rtems_timer_fire_when(<br>
   rtems_id                            id,<br>
@@ -30,43 +27,12 @@ rtems_status_code rtems_timer_fire_when(<br>
   void                               *user_data<br>
 )<br>
 {<br>
-  Timer_Control       *the_timer;<br>
-  Objects_Locations    location;<br>
-  rtems_interval       seconds;<br>
-<br>
-  if ( !_TOD_Is_set() )<br>
-    return RTEMS_NOT_DEFINED;<br>
-<br>
-  if ( !_TOD_Validate( wall_time ) )<br>
-    return RTEMS_INVALID_CLOCK;<br>
-<br>
-  if ( !routine )<br>
-    return RTEMS_INVALID_ADDRESS;<br>
-<br>
-  seconds = _TOD_To_seconds( wall_time );<br>
-  if ( seconds <= _TOD_Seconds_since_epoch() )<br>
-    return RTEMS_INVALID_CLOCK;<br>
-<br>
-  the_timer = _Timer_Get( id, &location );<br>
-  switch ( location ) {<br>
-<br>
-    case OBJECTS_LOCAL:<br>
-      _Timer_Cancel( the_timer );<br>
-      the_timer->the_class = TIMER_TIME_OF_DAY;<br>
-      _Watchdog_Initialize( &the_timer->Ticker, routine, id, user_data );<br>
-      _Watchdog_Insert_seconds(<br>
-         &the_timer->Ticker,<br>
-         seconds - _TOD_Seconds_since_epoch()<br>
-       );<br>
-      _Objects_Put( &the_timer->Object );<br>
-      return RTEMS_SUCCESSFUL;<br>
-<br>
-#if defined(RTEMS_MULTIPROCESSING)<br>
-    case OBJECTS_REMOTE:            /* should never return this */<br>
-#endif<br>
-    case OBJECTS_ERROR:<br>
-      break;<br>
-  }<br>
-<br>
-  return RTEMS_INVALID_ID;<br>
+  return _Timer_Fire_when(<br>
+    id,<br>
+    wall_time,<br>
+    routine,<br>
+    user_data,<br>
+    TIMER_TIME_OF_DAY,<br>
+    _Timer_Routine_adaptor<br>
+  );<br>
 }<br>
diff --git a/cpukit/rtems/src/timergetinfo.c b/cpukit/rtems/src/timergetinfo.c<br>
index 17c32e6..a11861c 100644<br>
--- a/cpukit/rtems/src/timergetinfo.c<br>
+++ b/cpukit/rtems/src/timergetinfo.c<br>
@@ -32,19 +32,22 @@ rtems_status_code rtems_timer_get_information(<br>
 {<br>
   Timer_Control     *the_timer;<br>
   Objects_Locations  location;<br>
+  ISR_lock_Context   lock_context;<br>
+  Per_CPU_Control   *cpu;<br>
<br>
   if ( !the_info )<br>
     return RTEMS_INVALID_ADDRESS;<br>
<br>
-  the_timer = _Timer_Get( id, &location );<br>
+  the_timer = _Timer_Get( id, &location, &lock_context );<br>
   switch ( location ) {<br>
<br>
     case OBJECTS_LOCAL:<br>
+      cpu = _Timer_Acquire_critical( the_timer, &lock_context );<br>
       the_info->the_class  = the_timer->the_class;<br>
-      the_info->initial    = the_timer->Ticker.initial;<br>
-      the_info->start_time = the_timer->Ticker.start_time;<br>
-      the_info->stop_time  = the_timer->Ticker.stop_time;<br>
-      _Objects_Put( &the_timer->Object );<br>
+      the_info->initial    = the_timer->initial;<br>
+      the_info->start_time = the_timer->start_time;<br>
+      the_info->stop_time  = the_timer->stop_time;<br>
+      _Timer_Release( cpu, &lock_context );<br>
       return RTEMS_SUCCESSFUL;<br>
<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
diff --git a/cpukit/rtems/src/timerreset.c b/cpukit/rtems/src/timerreset.c<br>
index 7ab172e..72c912b 100644<br>
--- a/cpukit/rtems/src/timerreset.c<br>
+++ b/cpukit/rtems/src/timerreset.c<br>
@@ -44,40 +44,29 @@ rtems_status_code rtems_timer_reset(<br>
 {<br>
   Timer_Control     *the_timer;<br>
   Objects_Locations  location;<br>
-  rtems_status_code  status = RTEMS_SUCCESSFUL;<br>
+  ISR_lock_Context   lock_context;<br>
+  Per_CPU_Control   *cpu;<br>
+  rtems_status_code  status;<br>
<br>
-  the_timer = _Timer_Get( id, &location );<br>
+  the_timer = _Timer_Get( id, &location, &lock_context );<br>
   switch ( location ) {<br>
<br>
     case OBJECTS_LOCAL:<br>
-      if ( the_timer->the_class == TIMER_INTERVAL ) {<br>
-        _Watchdog_Reset_ticks( &the_timer->Ticker );<br>
-      } else if ( the_timer->the_class == TIMER_INTERVAL_ON_TASK ) {<br>
-        Timer_server_Control *timer_server = _Timer_server;<br>
+      cpu = _Timer_Acquire_critical( the_timer, &lock_context );<br>
<br>
-        /*<br>
-         *  There is no way for a timer to have this class unless<br>
-         *  it was scheduled as a server fire.  That requires that<br>
-         *  the Timer Server be initiated.  So this error cannot<br>
-         *  occur unless something is internally wrong.<br>
-         */<br>
-        #if defined(RTEMS_DEBUG)<br>
-          if ( !timer_server ) {<br>
-            _Objects_Put( &the_timer->Object );<br>
-            return RTEMS_INCORRECT_STATE;<br>
-          }<br>
-        #endif<br>
-        (*timer_server->cancel)( timer_server, the_timer );<br>
-        (*timer_server->schedule_operation)( timer_server, the_timer );<br>
+      if ( _Timer_Is_interval_class( the_timer->the_class ) ) {<br>
+        _Timer_Cancel( cpu, the_timer );<br>
+        _Watchdog_Insert(<br>
+          &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+          &the_timer->Ticker,<br>
+          cpu->Watchdog.ticks + the_timer->initial<br>
+        );<br>
+        status = RTEMS_SUCCESSFUL;<br>
       } else {<br>
-        /*<br>
-         *  Must be dormant or time of day timer (e.g. TIMER_DORMANT,<br>
-         *  TIMER_TIME_OF_DAY, or TIMER_TIME_OF_DAY_ON_TASK).  We<br>
-         *  can only reset active interval timers.<br>
-         */<br>
         status = RTEMS_NOT_DEFINED;<br>
       }<br>
-      _Objects_Put( &the_timer->Object );<br>
+<br>
+      _Timer_Release( cpu, &lock_context );<br>
       return status;<br>
<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
diff --git a/cpukit/rtems/src/timerserver.c b/cpukit/rtems/src/timerserver.c<br>
index 7d75780..cf06319 100644<br>
--- a/cpukit/rtems/src/timerserver.c<br>
+++ b/cpukit/rtems/src/timerserver.c<br>
@@ -15,7 +15,7 @@<br>
 /*  COPYRIGHT (c) 1989-2008.<br>
  *  On-Line Applications Research Corporation (OAR).<br>
  *<br>
- *  Copyright (c) 2009-2015 embedded brains GmbH.<br>
+ *  Copyright (c) 2009, 2016 embedded brains GmbH.<br>
  *<br>
  *  The license and distribution terms for this file may be<br>
  *  found in the file LICENSE in this distribution or at<br>
@@ -34,193 +34,48 @@<br>
<br>
 static Timer_server_Control _Timer_server_Default;<br>
<br>
-static void _Timer_server_Cancel_method(<br>
+static void _Timer_server_Acquire(<br>
   Timer_server_Control *ts,<br>
-  Timer_Control *timer<br>
+  ISR_lock_Context     *lock_context<br>
 )<br>
 {<br>
-  if ( timer->the_class == TIMER_INTERVAL_ON_TASK ) {<br>
-    _Watchdog_Remove( &ts->Interval_watchdogs.Header, &timer->Ticker );<br>
-  } else if ( timer->the_class == TIMER_TIME_OF_DAY_ON_TASK ) {<br>
-    _Watchdog_Remove( &ts->TOD_watchdogs.Header, &timer->Ticker );<br>
-  }<br>
-}<br>
-<br>
-static Watchdog_Interval _Timer_server_Get_ticks( void )<br>
-{<br>
-  return _Watchdog_Ticks_since_boot;<br>
+  _ISR_lock_ISR_disable_and_acquire( &ts->Lock, lock_context );<br>
 }<br>
<br>
-static Watchdog_Interval _Timer_server_Get_seconds( void )<br>
-{<br>
-  return _TOD_Seconds_since_epoch();<br>
-}<br>
-<br>
-static void _Timer_server_Update_system_watchdog(<br>
-  Timer_server_Watchdogs *watchdogs,<br>
-  Watchdog_Header *system_header<br>
-)<br>
-{<br>
-  ISR_lock_Context lock_context;<br>
-<br>
-  _Watchdog_Acquire( &watchdogs->Header, &lock_context );<br>
-<br>
-  if ( watchdogs->system_watchdog_helper == NULL ) {<br>
-    Thread_Control *executing;<br>
-    uint32_t my_generation;<br>
-<br>
-    executing = _Thread_Executing;<br>
-    watchdogs->system_watchdog_helper = executing;<br>
-<br>
-    do {<br>
-      my_generation = watchdogs->generation;<br>
-<br>
-      if ( !_Watchdog_Is_empty( &watchdogs->Header ) ) {<br>
-        Watchdog_Control *first;<br>
-        Watchdog_Interval delta;<br>
-<br>
-        first = _Watchdog_First( &watchdogs->Header );<br>
-        delta = first->delta_interval;<br>
-<br>
-        if (<br>
-          watchdogs->System_watchdog.state == WATCHDOG_INACTIVE<br>
-            || delta != watchdogs->system_watchdog_delta<br>
-        ) {<br>
-          watchdogs->system_watchdog_delta = delta;<br>
-          _Watchdog_Release( &watchdogs->Header, &lock_context );<br>
-<br>
-          _Watchdog_Remove( system_header, &watchdogs->System_watchdog );<br>
-          watchdogs->System_watchdog.initial = delta;<br>
-          _Watchdog_Insert( system_header, &watchdogs->System_watchdog );<br>
-<br>
-          _Watchdog_Acquire( &watchdogs->Header, &lock_context );<br>
-        }<br>
-      }<br>
-    } while ( watchdogs->generation != my_generation );<br>
-<br>
-    watchdogs->system_watchdog_helper = NULL;<br>
-  }<br>
-<br>
-  _Watchdog_Release( &watchdogs->Header, &lock_context );<br>
-}<br>
-<br>
-static void _Timer_server_Insert_timer(<br>
-  Timer_server_Watchdogs *watchdogs,<br>
-  Timer_Control *timer,<br>
-  Watchdog_Header *system_header,<br>
-  Watchdog_Interval (*get_ticks)( void )<br>
-)<br>
-{<br>
-  ISR_lock_Context lock_context;<br>
-  Watchdog_Interval now;<br>
-  Watchdog_Interval delta;<br>
-<br>
-  _Watchdog_Acquire( &watchdogs->Header, &lock_context );<br>
-<br>
-  now = (*get_ticks)();<br>
-  delta = now - watchdogs->last_snapshot;<br>
-  watchdogs->last_snapshot = now;<br>
-  watchdogs->current_snapshot = now;<br>
-<br>
-  if ( watchdogs->system_watchdog_delta > delta ) {<br>
-    watchdogs->system_watchdog_delta -= delta;<br>
-  } else {<br>
-    watchdogs->system_watchdog_delta = 0;<br>
-  }<br>
-<br>
-  if ( !_Watchdog_Is_empty( &watchdogs->Header ) ) {<br>
-    Watchdog_Control *first = _Watchdog_First( &watchdogs->Header );<br>
-<br>
-    if ( first->delta_interval > delta ) {<br>
-      first->delta_interval -= delta;<br>
-    } else {<br>
-      first->delta_interval = 0;<br>
-    }<br>
-  }<br>
-<br>
-  _Watchdog_Insert_locked(<br>
-    &watchdogs->Header,<br>
-    &timer->Ticker,<br>
-    &lock_context<br>
-  );<br>
-<br>
-  ++watchdogs->generation;<br>
-<br>
-  _Watchdog_Release( &watchdogs->Header, &lock_context );<br>
-<br>
-  _Timer_server_Update_system_watchdog( watchdogs, system_header );<br>
-}<br>
-<br>
-static void _Timer_server_Schedule_operation_method(<br>
+static void _Timer_server_Release(<br>
   Timer_server_Control *ts,<br>
-  Timer_Control *timer<br>
+  ISR_lock_Context     *lock_context<br>
 )<br>
 {<br>
-  if ( timer->the_class == TIMER_INTERVAL_ON_TASK ) {<br>
-    _Timer_server_Insert_timer(<br>
-      &ts->Interval_watchdogs,<br>
-      timer,<br>
-      &_Watchdog_Ticks_header,<br>
-      _Timer_server_Get_ticks<br>
-    );<br>
-  } else if ( timer->the_class == TIMER_TIME_OF_DAY_ON_TASK ) {<br>
-    _Timer_server_Insert_timer(<br>
-      &ts->TOD_watchdogs,<br>
-      timer,<br>
-      &_Watchdog_Seconds_header,<br>
-      _Timer_server_Get_seconds<br>
-    );<br>
-  }<br>
+  _ISR_lock_Release_and_ISR_enable( &ts->Lock, lock_context );<br>
 }<br>
<br>
-static void _Timer_server_Update_current_snapshot(<br>
-  Timer_server_Watchdogs *watchdogs,<br>
-  Watchdog_Interval (*get_ticks)( void )<br>
-)<br>
+void _Timer_server_Routine_adaptor( Watchdog_Control *the_watchdog )<br>
 {<br>
-  ISR_lock_Context lock_context;<br>
+  Timer_Control        *the_timer;<br>
+  ISR_lock_Context      lock_context;<br>
+  Per_CPU_Control      *cpu;<br>
+  Timer_server_Control *ts;<br>
+  bool                  wakeup;<br>
<br>
-  _Watchdog_Acquire( &watchdogs->Header, &lock_context );<br>
-  watchdogs->current_snapshot = (*get_ticks)();<br>
-  watchdogs->system_watchdog_delta = 0;<br>
-  _Watchdog_Release( &watchdogs->Header, &lock_context );<br>
-}<br>
+  ts = _Timer_server;<br>
+  _Assert( ts != NULL );<br>
+  the_timer = RTEMS_CONTAINER_OF( the_watchdog, Timer_Control, Ticker );<br>
<br>
-static void _Timer_server_Tickle(<br>
-  Timer_server_Watchdogs *watchdogs,<br>
-  Watchdog_Header *system_header,<br>
-  Watchdog_Interval (*get_ticks)( void ),<br>
-  bool ticks<br>
-)<br>
-{<br>
-  ISR_lock_Context lock_context;<br>
-  Watchdog_Interval now;<br>
-  Watchdog_Interval last;<br>
+  _Timer_server_Acquire( ts, &lock_context );<br>
<br>
-  _Watchdog_Acquire( &watchdogs->Header, &lock_context );<br>
+  _Assert( _Watchdog_Get_state( &the_timer->Ticker ) == WATCHDOG_INACTIVE );<br>
+  _Watchdog_Set_state( &the_timer->Ticker, WATCHDOG_PENDING );<br>
+  cpu = _Watchdog_Get_CPU( &the_timer->Ticker );<br>
+  the_timer->stop_time = _Timer_Get_CPU_ticks( cpu );<br>
+  wakeup = _Chain_Is_empty( &ts->Pending );<br>
+  _Chain_Append_unprotected( &ts->Pending, &the_timer->Ticker.Node.Chain );<br>
<br>
-  now = watchdogs->current_snapshot;<br>
-  last = watchdogs->last_snapshot;<br>
-  watchdogs->last_snapshot = now;<br>
+  _Timer_server_Release( ts, &lock_context );<br>
<br>
-  if ( ticks || now >= last ) {<br>
-    _Watchdog_Adjust_forward_locked(<br>
-      &watchdogs->Header,<br>
-      now - last,<br>
-      &lock_context<br>
-    );<br>
-  } else {<br>
-    _Watchdog_Adjust_backward_locked(<br>
-      &watchdogs->Header,<br>
-      last - now<br>
-    );<br>
+  if ( wakeup ) {<br>
+    (void) rtems_event_system_send( ts->server_id, RTEMS_EVENT_SYSTEM_SERVER );<br>
   }<br>
-<br>
-  ++watchdogs->generation;<br>
-<br>
-  _Watchdog_Release( &watchdogs->Header, &lock_context );<br>
-<br>
-  _Timer_server_Update_system_watchdog( watchdogs, system_header );<br>
 }<br>
<br>
 /**<br>
@@ -239,21 +94,38 @@ static rtems_task _Timer_server_Body(<br>
   Timer_server_Control *ts = (Timer_server_Control *) arg;<br>
<br>
   while ( true ) {<br>
-    rtems_event_set events;<br>
+    ISR_lock_Context  lock_context;<br>
+    rtems_event_set   events;<br>
<br>
-    _Timer_server_Tickle(<br>
-      &ts->Interval_watchdogs,<br>
-      &_Watchdog_Ticks_header,<br>
-      _Timer_server_Get_ticks,<br>
-      true<br>
-    );<br>
+    _Timer_server_Acquire( ts, &lock_context );<br>
<br>
-    _Timer_server_Tickle(<br>
-      &ts->TOD_watchdogs,<br>
-      &_Watchdog_Seconds_header,<br>
-      _Timer_server_Get_seconds,<br>
-      false<br>
-    );<br>
+    while ( true ) {<br>
+      Watchdog_Control                  *the_watchdog;<br>
+      Timer_Control                     *the_timer;<br>
+      rtems_timer_service_routine_entry  routine;<br>
+      Objects_Id                         id;<br>
+      void                              *user_data;<br>
+<br>
+      the_watchdog = (Watchdog_Control *) _Chain_Get_unprotected( &ts->Pending );<br>
+      if ( the_watchdog == NULL ) {<br>
+        break;<br>
+      }<br>
+<br>
+      _Assert( _Watchdog_Get_state( the_watchdog ) == WATCHDOG_PENDING );<br>
+      _Watchdog_Set_state( the_watchdog, WATCHDOG_INACTIVE );<br>
+      the_timer = RTEMS_CONTAINER_OF( the_watchdog, Timer_Control, Ticker );<br>
+      routine = the_timer->routine;<br>
+      id = the_timer->Object.id;<br>
+      user_data = the_timer->user_data;<br>
+<br>
+      _Timer_server_Release( ts, &lock_context );<br>
+<br>
+      ( *routine )( id, user_data );<br>
+<br>
+      _Timer_server_Acquire( ts, &lock_context );<br>
+    }<br>
+<br>
+    _Timer_server_Release( ts, &lock_context );<br>
<br>
     (void) rtems_event_system_receive(<br>
       RTEMS_EVENT_SYSTEM_SERVER,<br>
@@ -264,99 +136,35 @@ static rtems_task _Timer_server_Body(<br>
   }<br>
 }<br>
<br>
-static void _Timer_server_Wakeup(<br>
-  Objects_Id  id,<br>
-  void       *arg<br>
-)<br>
-{<br>
-  Timer_server_Control *ts = arg;<br>
-<br>
-  _Timer_server_Update_current_snapshot(<br>
-    &ts->Interval_watchdogs,<br>
-    _Timer_server_Get_ticks<br>
-  );<br>
-<br>
-  _Timer_server_Update_current_snapshot(<br>
-    &ts->TOD_watchdogs,<br>
-    _Timer_server_Get_seconds<br>
-  );<br>
-<br>
-  (void) rtems_event_system_send( id, RTEMS_EVENT_SYSTEM_SERVER );<br>
-}<br>
-<br>
-static void _Timer_server_Initialize_watchdogs(<br>
-  Timer_server_Control *ts,<br>
-  rtems_id id,<br>
-  Timer_server_Watchdogs *watchdogs,<br>
-  Watchdog_Interval (*get_ticks)( void )<br>
-)<br>
-{<br>
-  Watchdog_Interval now;<br>
-<br>
-  now = (*get_ticks)();<br>
-  watchdogs->last_snapshot = now;<br>
-  watchdogs->current_snapshot = now;<br>
-<br>
-  _Watchdog_Header_initialize( &watchdogs->Header );<br>
-  _Watchdog_Preinitialize( &watchdogs->System_watchdog );<br>
-  _Watchdog_Initialize(<br>
-    &watchdogs->System_watchdog,<br>
-    _Timer_server_Wakeup,<br>
-    id,<br>
-    ts<br>
-  );<br>
-}<br>
-<br>
-/**<br>
- *  @brief rtems_timer_initiate_server<br>
- *<br>
- *  This directive creates and starts the server for task-based timers.<br>
- *  It must be invoked before any task-based timers can be initiated.<br>
- *<br>
- *  @param[in] priority is the timer server priority<br>
- *  @param[in] stack_size is the stack size in bytes<br>
- *  @param[in] attribute_set is the timer server attributes<br>
- *<br>
- *  @return This method returns RTEMS_SUCCESSFUL if successful and an<br>
- *          error code otherwise.<br>
- */<br>
-rtems_status_code rtems_timer_initiate_server(<br>
-  uint32_t             priority,<br>
-  uint32_t             stack_size,<br>
-  rtems_attribute      attribute_set<br>
+static rtems_status_code _Timer_server_Initiate(<br>
+  rtems_task_priority priority,<br>
+  size_t              stack_size,<br>
+  rtems_attribute     attribute_set<br>
 )<br>
 {<br>
-  rtems_id              id;<br>
   rtems_status_code     status;<br>
-  rtems_task_priority   _priority;<br>
-  static bool           initialized = false;<br>
-  bool                  tmpInitialized;<br>
-  Timer_server_Control *ts = &_Timer_server_Default;<br>
+  rtems_id              id;<br>
+  Timer_server_Control *ts;<br>
+<br>
+  /*<br>
+   *  Just to make sure this is only called once.<br>
+   */<br>
+  if ( _Timer_server != NULL ) {<br>
+    return RTEMS_INCORRECT_STATE;<br>
+  }<br>
<br>
   /*<br>
    *  Make sure the requested priority is valid.  The if is<br>
    *  structured so we check it is invalid before looking for<br>
    *  a specific invalid value as the default.<br>
    */<br>
-  _priority = priority;<br>
   if ( !_RTEMS_tasks_Priority_is_valid( priority ) ) {<br>
     if ( priority != RTEMS_TIMER_SERVER_DEFAULT_PRIORITY )<br>
       return RTEMS_INVALID_PRIORITY;<br>
-    _priority = PRIORITY_PSEUDO_ISR;<br>
+    priority = PRIORITY_PSEUDO_ISR;<br>
   }<br>
<br>
   /*<br>
-   *  Just to make sure this is only called once.<br>
-   */<br>
-  _Once_Lock();<br>
-    tmpInitialized  = initialized;<br>
-    initialized = true;<br>
-  _Once_Unlock();<br>
-<br>
-  if ( tmpInitialized )<br>
-    return RTEMS_INCORRECT_STATE;<br>
-<br>
-  /*<br>
    *  Create the Timer Server with the name the name of "TIME".  The attribute<br>
    *  RTEMS_SYSTEM_TASK allows us to set a priority to 0 which will makes it<br>
    *  higher than any other task in the system.  It can be viewed as a low<br>
@@ -371,19 +179,18 @@ rtems_status_code rtems_timer_initiate_server(<br>
    *  GNAT run-time is violated.<br>
    */<br>
   status = rtems_task_create(<br>
-    _Objects_Build_name('T','I','M','E'),           /* "TIME" */<br>
-    _priority,            /* create with priority 1 since 0 is illegal */<br>
-    stack_size,           /* let user specify stack size */<br>
+    rtems_build_name('T','I','M','E'),<br>
+    priority,<br>
+    stack_size,<br>
     rtems_configuration_is_smp_enabled() ?<br>
       RTEMS_DEFAULT_MODES : /* no preempt is not supported for SMP */<br>
       RTEMS_NO_PREEMPT,   /* no preempt is like an interrupt */<br>
                           /* user may want floating point but we need */<br>
                           /*   system task specified for 0 priority */<br>
     attribute_set | RTEMS_SYSTEM_TASK,<br>
-    &id                   /* get the id back */<br>
+    &id<br>
   );<br>
-  if (status) {<br>
-    initialized = false;<br>
+  if (status != RTEMS_SUCCESSFUL) {<br>
     return status;<br>
   }<br>
<br>
@@ -392,26 +199,10 @@ rtems_status_code rtems_timer_initiate_server(<br>
    *  Timer Server so we do not have to have a critical section.<br>
    */<br>
<br>
-  _Timer_server_Initialize_watchdogs(<br>
-    ts,<br>
-    id,<br>
-    &ts->Interval_watchdogs,<br>
-    _Timer_server_Get_ticks<br>
-  );<br>
-<br>
-  _Timer_server_Initialize_watchdogs(<br>
-    ts,<br>
-    id,<br>
-    &ts->TOD_watchdogs,<br>
-    _Timer_server_Get_seconds<br>
-  );<br>
-<br>
-  /*<br>
-   *  Initialize the pointer to the timer server methods so applications that<br>
-   *  do not use the Timer Server do not have to pull it in.<br>
-   */<br>
-  ts->cancel = _Timer_server_Cancel_method;<br>
-  ts->schedule_operation = _Timer_server_Schedule_operation_method;<br>
+  ts = &_Timer_server_Default;<br>
+  _ISR_lock_Initialize( &ts->Lock, "Timer Server" );<br>
+  _Chain_Initialize_empty( &ts->Pending );<br>
+  ts->server_id = id;<br>
<br>
   /*<br>
    * The default timer server is now available.<br>
@@ -426,19 +217,22 @@ rtems_status_code rtems_timer_initiate_server(<br>
     _Timer_server_Body,<br>
     (rtems_task_argument) ts<br>
   );<br>
+  _Assert( status == RTEMS_SUCCESSFUL );<br>
<br>
-  #if defined(RTEMS_DEBUG)<br>
-    /*<br>
-     *  One would expect a call to rtems_task_delete() here to clean up<br>
-     *  but there is actually no way (in normal circumstances) that the<br>
-     *  start can fail.  The id and starting address are known to be<br>
-     *  be good.  If this service fails, something is weirdly wrong on the<br>
-     *  target such as a stray write in an ISR or incorrect memory layout.<br>
-     */<br>
-    if (status) {<br>
-      initialized = false;<br>
-    }<br>
-  #endif<br>
+  return status;<br>
+}<br>
+<br>
+rtems_status_code rtems_timer_initiate_server(<br>
+  rtems_task_priority priority,<br>
+  size_t              stack_size,<br>
+  rtems_attribute     attribute_set<br>
+)<br>
+{<br>
+  rtems_status_code status;<br>
+<br>
+  _Once_Lock();<br>
+  status = _Timer_server_Initiate( priority, stack_size, attribute_set );<br>
+  _Once_Unlock();<br>
<br>
   return status;<br>
 }<br>
diff --git a/cpukit/rtems/src/timerserverfireafter.c b/cpukit/rtems/src/timerserverfireafter.c<br>
index 0636782..ce1fd05 100644<br>
--- a/cpukit/rtems/src/timerserverfireafter.c<br>
+++ b/cpukit/rtems/src/timerserverfireafter.c<br>
@@ -18,12 +18,7 @@<br>
 #include "config.h"<br>
 #endif<br>
<br>
-#include <rtems/system.h><br>
-#include <rtems/rtems/status.h><br>
-#include <rtems/rtems/support.h><br>
-#include <rtems/score/thread.h><br>
 #include <rtems/rtems/timerimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
<br>
 rtems_status_code rtems_timer_server_fire_after(<br>
   rtems_id                           id,<br>
@@ -32,60 +27,19 @@ rtems_status_code rtems_timer_server_fire_after(<br>
   void                              *user_data<br>
 )<br>
 {<br>
-  Timer_Control        *the_timer;<br>
-  Objects_Locations     location;<br>
-  ISR_Level             level;<br>
-  Timer_server_Control *timer_server = _Timer_server;<br>
+  Timer_server_Control *timer_server;<br>
+<br>
+  timer_server = _Timer_server;<br>
<br>
   if ( !timer_server )<br>
     return RTEMS_INCORRECT_STATE;<br>
<br>
-  if ( !routine )<br>
-    return RTEMS_INVALID_ADDRESS;<br>
-<br>
-  if ( ticks == 0 )<br>
-    return RTEMS_INVALID_NUMBER;<br>
-<br>
-  the_timer = _Timer_Get( id, &location );<br>
-  switch ( location ) {<br>
-<br>
-    case OBJECTS_LOCAL:<br>
-      _Timer_Cancel( the_timer );<br>
-<br>
-      _ISR_Disable( level );<br>
-<br>
-        /*<br>
-         *  Check to see if the watchdog has just been inserted by a<br>
-         *  higher priority interrupt.  If so, abandon this insert.<br>
-         */<br>
-<br>
-        if ( the_timer->Ticker.state != WATCHDOG_INACTIVE ) {<br>
-          _ISR_Enable( level );<br>
-          _Objects_Put( &the_timer->Object );<br>
-          return RTEMS_SUCCESSFUL;<br>
-        }<br>
-<br>
-        /*<br>
-         *  OK.  Now we now the timer was not rescheduled by an interrupt<br>
-         *  so we can atomically initialize it as in use.<br>
-         */<br>
-<br>
-        the_timer->the_class = TIMER_INTERVAL_ON_TASK;<br>
-        _Watchdog_Initialize( &the_timer->Ticker, routine, id, user_data );<br>
-        the_timer->Ticker.initial = ticks;<br>
-      _ISR_Enable( level );<br>
-<br>
-      (*timer_server->schedule_operation)( timer_server, the_timer );<br>
-<br>
-      _Objects_Put( &the_timer->Object );<br>
-      return RTEMS_SUCCESSFUL;<br>
-<br>
-#if defined(RTEMS_MULTIPROCESSING)<br>
-    case OBJECTS_REMOTE:            /* should never return this */<br>
-#endif<br>
-    case OBJECTS_ERROR:<br>
-      break;<br>
-  }<br>
-<br>
-  return RTEMS_INVALID_ID;<br>
+  return _Timer_Fire_after(<br>
+    id,<br>
+    ticks,<br>
+    routine,<br>
+    user_data,<br>
+    TIMER_INTERVAL_ON_TASK,<br>
+    _Timer_server_Routine_adaptor<br>
+  );<br>
 }<br>
diff --git a/cpukit/rtems/src/timerserverfirewhen.c b/cpukit/rtems/src/timerserverfirewhen.c<br>
index 0069af1..f96a470 100644<br>
--- a/cpukit/rtems/src/timerserverfirewhen.c<br>
+++ b/cpukit/rtems/src/timerserverfirewhen.c<br>
@@ -19,26 +19,6 @@<br>
 #endif<br>
<br>
 #include <rtems/rtems/timerimpl.h><br>
-#include <rtems/rtems/clock.h><br>
-#include <rtems/score/todimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
-<br>
-/*<br>
- *  rtems_timer_server_fire_when<br>
- *<br>
- *  This directive allows a thread to start a timer which will by<br>
- *  executed by the Timer Server when it fires.<br>
- *<br>
- *  Input parameters:<br>
- *    id        - timer id<br>
- *    wall_time - time of day to fire timer<br>
- *    routine   - routine to schedule<br>
- *    user_data - passed as argument to routine when it is fired<br>
- *<br>
- *  Output parameters:<br>
- *    RTEMS_SUCCESSFUL - if successful<br>
- *    error code       - if unsuccessful<br>
- */<br>
<br>
 rtems_status_code rtems_timer_server_fire_when(<br>
   rtems_id                           id,<br>
@@ -47,47 +27,19 @@ rtems_status_code rtems_timer_server_fire_when(<br>
   void                              *user_data<br>
 )<br>
 {<br>
-  Timer_Control        *the_timer;<br>
-  Objects_Locations     location;<br>
-  rtems_interval        seconds;<br>
-  Timer_server_Control *timer_server = _Timer_server;<br>
+  Timer_server_Control *timer_server;<br>
+<br>
+  timer_server = _Timer_server;<br>
<br>
   if ( !timer_server )<br>
     return RTEMS_INCORRECT_STATE;<br>
<br>
-  if ( !_TOD_Is_set() )<br>
-    return RTEMS_NOT_DEFINED;<br>
-<br>
-  if ( !routine )<br>
-    return RTEMS_INVALID_ADDRESS;<br>
-<br>
-  if ( !_TOD_Validate( wall_time ) )<br>
-    return RTEMS_INVALID_CLOCK;<br>
-<br>
-  seconds = _TOD_To_seconds( wall_time );<br>
-  if ( seconds <= _TOD_Seconds_since_epoch() )<br>
-    return RTEMS_INVALID_CLOCK;<br>
-<br>
-  the_timer = _Timer_Get( id, &location );<br>
-  switch ( location ) {<br>
-<br>
-    case OBJECTS_LOCAL:<br>
-      _Timer_Cancel( the_timer );<br>
-      the_timer->the_class = TIMER_TIME_OF_DAY_ON_TASK;<br>
-      _Watchdog_Initialize( &the_timer->Ticker, routine, id, user_data );<br>
-      the_timer->Ticker.initial = seconds - _TOD_Seconds_since_epoch();<br>
-<br>
-      (*timer_server->schedule_operation)( timer_server, the_timer );<br>
-<br>
-      _Objects_Put( &the_timer->Object );<br>
-      return RTEMS_SUCCESSFUL;<br>
-<br>
-#if defined(RTEMS_MULTIPROCESSING)<br>
-    case OBJECTS_REMOTE:            /* should never return this */<br>
-#endif<br>
-    case OBJECTS_ERROR:<br>
-      break;<br>
-  }<br>
-<br>
-  return RTEMS_INVALID_ID;<br>
+  return _Timer_Fire_when(<br>
+    id,<br>
+    wall_time,<br>
+    routine,<br>
+    user_data,<br>
+    TIMER_TIME_OF_DAY_ON_TASK,<br>
+    _Timer_server_Routine_adaptor<br>
+  );<br>
 }<br>
diff --git a/cpukit/sapi/src/exinit.c b/cpukit/sapi/src/exinit.c<br>
index 7df2316..350c774 100644<br>
--- a/cpukit/sapi/src/exinit.c<br>
+++ b/cpukit/sapi/src/exinit.c<br>
@@ -38,7 +38,6 @@<br>
 #include <rtems/score/timecounter.h><br>
 #include <rtems/score/threadimpl.h><br>
 #include <rtems/score/todimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
 #include <rtems/score/wkspace.h><br>
<br>
 const char _Copyright_Notice[] =<br>
@@ -87,8 +86,6 @@ static void rtems_initialize_data_structures(void)<br>
   _API_Mutex_Allocate( &_RTEMS_Allocator_Mutex );<br>
   _API_Mutex_Allocate( &_Once_Mutex );<br>
<br>
-  _Watchdog_Handler_initialization();<br>
-<br>
   _Thread_Handler_initialization();<br>
<br>
   _Scheduler_Handler_initialization();<br>
diff --git a/cpukit/score/Makefile.am b/cpukit/score/Makefile.am<br>
index 3d3f1c1..ea440b3 100644<br>
--- a/cpukit/score/Makefile.am<br>
+++ b/cpukit/score/Makefile.am<br>
@@ -327,14 +327,13 @@ libscore_a_SOURCES += src/timespecaddto.c src/timespecfromticks.c \<br>
<br>
 ## TOD_C_FILES<br>
 libscore_a_SOURCES += src/coretod.c src/coretodset.c \<br>
-    src/coretodtickle.c \<br>
     src/coretodtickspersec.c \<br>
     src/coretodadjust.c<br>
 libscore_a_SOURCES += src/coretodabsolutetimeout.c<br>
<br>
 ## WATCHDOG_C_FILES<br>
-libscore_a_SOURCES += src/watchdog.c src/watchdogadjust.c \<br>
-    src/watchdoginsert.c src/watchdogremove.c<br>
+libscore_a_SOURCES += src/watchdoginsert.c<br>
+libscore_a_SOURCES += src/watchdogremove.c<br>
 libscore_a_SOURCES += src/watchdogtick.c<br>
 libscore_a_SOURCES += src/watchdogtickssinceboot.c<br>
<br>
diff --git a/cpukit/score/include/rtems/score/mrsp.h b/cpukit/score/include/rtems/score/mrsp.h<br>
index 08f96ac..cb3de67 100644<br>
--- a/cpukit/score/include/rtems/score/mrsp.h<br>
+++ b/cpukit/score/include/rtems/score/mrsp.h<br>
@@ -1,5 +1,5 @@<br>
 /*<br>
- * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.<br>
+ * Copyright (c) 2014, 2016 embedded brains GmbH.  All rights reserved.<br>
  *<br>
  *  embedded brains GmbH<br>
  *  Dornierstr. 4<br>
@@ -128,6 +128,11 @@ typedef struct {<br>
    * MRSP_TIMEOUT.  State changes are protected by the MrsP control lock.<br>
    */<br>
   volatile MRSP_Status status;<br>
+<br>
+  /**<br>
+   * @brief Watchdog for timeouts.<br>
+   */<br>
+  Watchdog_Control Watchdog;<br>
 } MRSP_Rival;<br>
<br>
 /**<br>
diff --git a/cpukit/score/include/rtems/score/mrspimpl.h b/cpukit/score/include/rtems/score/mrspimpl.h<br>
index bc9ed4b..7638fb5 100644<br>
--- a/cpukit/score/include/rtems/score/mrspimpl.h<br>
+++ b/cpukit/score/include/rtems/score/mrspimpl.h<br>
@@ -1,5 +1,5 @@<br>
 /*<br>
- * Copyright (c) 2014-2015 embedded brains GmbH.  All rights reserved.<br>
+ * Copyright (c) 2014, 2016 embedded brains GmbH.  All rights reserved.<br>
  *<br>
  *  embedded brains GmbH<br>
  *  Dornierstr. 4<br>
@@ -159,18 +159,13 @@ RTEMS_INLINE_ROUTINE void _MRSP_Set_ceiling_priority(<br>
   mrsp->ceiling_priorities[ scheduler_index ] = ceiling_priority;<br>
 }<br>
<br>
-RTEMS_INLINE_ROUTINE void _MRSP_Timeout(<br>
-  Objects_Id  id,<br>
-  void       *arg<br>
-)<br>
+RTEMS_INLINE_ROUTINE void _MRSP_Timeout( Watchdog_Control *watchdog )<br>
 {<br>
-  MRSP_Rival *rival = arg;<br>
+  MRSP_Rival *rival = RTEMS_CONTAINER_OF( watchdog, MRSP_Rival, Watchdog );<br>
   MRSP_Control *mrsp = rival->resource;<br>
   Thread_Control *thread = rival->thread;<br>
   ISR_lock_Context lock_context;<br>
<br>
-  (void) id;<br>
-<br>
   _ISR_lock_ISR_disable_and_acquire( &mrsp->Lock, &lock_context );<br>
<br>
   if ( rival->status == MRSP_WAIT_FOR_OWNERSHIP ) {<br>
@@ -209,6 +204,7 @@ RTEMS_INLINE_ROUTINE MRSP_Status _MRSP_Wait_for_ownership(<br>
   bool initial_life_protection;<br>
   Per_CPU_Control *cpu_self;<br>
   ISR_lock_Context giant_lock_context;<br>
+  ISR_Level level;<br>
<br>
   rival.thread = executing;<br>
   rival.resource = mrsp;<br>
@@ -236,13 +232,11 @@ RTEMS_INLINE_ROUTINE MRSP_Status _MRSP_Wait_for_ownership(<br>
   _Thread_Raise_priority( executing, ceiling_priority );<br>
<br>
   if ( timeout > 0 ) {<br>
-    _Watchdog_Initialize(<br>
-      &executing->Timer,<br>
-      _MRSP_Timeout,<br>
-      0,<br>
-      &rival<br>
-    );<br>
-    _Watchdog_Insert_ticks( &executing->Timer, timeout );<br>
+    _Watchdog_Preinitialize( &rival.Watchdog, cpu_self );<br>
+    _Watchdog_Initialize( &rival.Watchdog, _MRSP_Timeout );<br>
+    _ISR_Disable_without_giant( level );<br>
+    _Watchdog_Per_CPU_insert_relative( &rival.Watchdog, cpu_self, timeout );<br>
+    _ISR_Enable_without_giant( level );<br>
   }<br>
<br>
   initial_life_protection = _Thread_Set_life_protection( true );<br>
@@ -258,7 +252,13 @@ RTEMS_INLINE_ROUTINE MRSP_Status _MRSP_Wait_for_ownership(<br>
   _Thread_Set_life_protection( initial_life_protection );<br>
<br>
   if ( timeout > 0 ) {<br>
-    _Watchdog_Remove_ticks( &executing->Timer );<br>
+    _ISR_Disable_without_giant( level );<br>
+    _Watchdog_Per_CPU_remove(<br>
+      &rival.Watchdog,<br>
+      cpu_self,<br>
+      &cpu_self->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ]<br>
+    );<br>
+    _ISR_Enable_without_giant( level );<br>
<br>
     if ( status == MRSP_TIMEOUT ) {<br>
       _MRSP_Restore_priority( executing, initial_priority );<br>
diff --git a/cpukit/score/include/rtems/score/percpu.h b/cpukit/score/include/rtems/score/percpu.h<br>
index 39be1e3..2201788 100644<br>
--- a/cpukit/score/include/rtems/score/percpu.h<br>
+++ b/cpukit/score/include/rtems/score/percpu.h<br>
@@ -23,10 +23,11 @@<br>
   #include <rtems/asm.h><br>
 #else<br>
   #include <rtems/score/assert.h><br>
-  #include <rtems/score/isrlevel.h><br>
+  #include <rtems/score/isrlock.h><br>
   #include <rtems/score/smp.h><br>
   #include <rtems/score/smplock.h><br>
   #include <rtems/score/timestamp.h><br>
+  #include <rtems/score/watchdog.h><br>
 #endif<br>
<br>
 #ifdef __cplusplus<br>
@@ -41,7 +42,7 @@ extern "C" {<br>
    * processor.<br>
    */<br>
   #if defined( RTEMS_PROFILING )<br>
-    #define PER_CPU_CONTROL_SIZE_LOG2 8<br>
+    #define PER_CPU_CONTROL_SIZE_LOG2 9<br>
   #else<br>
     #define PER_CPU_CONTROL_SIZE_LOG2 7<br>
   #endif<br>
@@ -226,6 +227,32 @@ typedef struct {<br>
 } Per_CPU_Stats;<br>
<br>
 /**<br>
+ * @brief Per-CPU watchdog header index.<br>
+ */<br>
+typedef enum {<br>
+  /**<br>
+   * @brief Index for relative per-CPU watchdog header.<br>
+   *<br>
+   * The reference time point for this header is current ticks value<br>
+   * during insert.  Time is measured in clock ticks.<br>
+   */<br>
+  PER_CPU_WATCHDOG_RELATIVE,<br>
+<br>
+  /**<br>
+   * @brief Index for absolute per-CPU watchdog header.<br>
+   *<br>
+   * The reference time point for this header is the POSIX Epoch.  Time is<br>
+   * measured in nanoseconds since POSIX Epoch.<br>
+   */<br>
+  PER_CPU_WATCHDOG_ABSOLUTE,<br>
+<br>
+  /**<br>
+   * @brief Count of per-CPU watchdog headers.<br>
+   */<br>
+  PER_CPU_WATCHDOG_COUNT<br>
+} Per_CPU_Watchdog_index;<br>
+<br>
+/**<br>
  *  @brief Per CPU Core Structure<br>
  *<br>
  *  This structure is used to hold per core state information.<br>
@@ -309,6 +336,28 @@ typedef struct Per_CPU_Control {<br>
   /** This is the time of the last context switch on this CPU. */<br>
   Timestamp_Control time_of_last_context_switch;<br>
<br>
+  /**<br>
+   * @brief Watchdog state for this processor.<br>
+   */<br>
+  struct {<br>
+    /**<br>
+     * @brief Protects all watchdog operations on this processor.<br>
+     */<br>
+    ISR_LOCK_MEMBER( Lock )<br>
+<br>
+    /**<br>
+     * @brief Watchdog ticks on this processor used for relative watchdogs.<br>
+     */<br>
+    uint64_t ticks;<br>
+<br>
+    /**<br>
+     * @brief Header for watchdogs.<br>
+     *<br>
+     * @see Per_CPU_Watchdog_index.<br>
+     */<br>
+    Watchdog_Header Header[ PER_CPU_WATCHDOG_COUNT ];<br>
+  } Watchdog;<br>
+<br>
   #if defined( RTEMS_SMP )<br>
     /**<br>
      * @brief This lock protects some parts of the low-level thread dispatching.<br>
diff --git a/cpukit/score/include/rtems/score/schedulerimpl.h b/cpukit/score/include/rtems/score/schedulerimpl.h<br>
index cadebfd..d50c36a 100644<br>
--- a/cpukit/score/include/rtems/score/schedulerimpl.h<br>
+++ b/cpukit/score/include/rtems/score/schedulerimpl.h<br>
@@ -452,19 +452,13 @@ RTEMS_INLINE_ROUTINE void _Scheduler_Release_job(<br>
  * scheduler which support standard RTEMS features, this includes<br>
  * time-slicing management.<br>
  */<br>
-RTEMS_INLINE_ROUTINE void _Scheduler_Tick( void )<br>
+RTEMS_INLINE_ROUTINE void _Scheduler_Tick( const Per_CPU_Control *cpu )<br>
 {<br>
-  uint32_t cpu_count = _SMP_Get_processor_count();<br>
-  uint32_t cpu_index;<br>
+  const Scheduler_Control *scheduler = _Scheduler_Get_by_CPU( cpu );<br>
+  Thread_Control *executing = cpu->executing;<br>
<br>
-  for ( cpu_index = 0 ; cpu_index < cpu_count ; ++cpu_index ) {<br>
-    const Per_CPU_Control *cpu = _Per_CPU_Get_by_index( cpu_index );<br>
-    const Scheduler_Control *scheduler = _Scheduler_Get_by_CPU( cpu );<br>
-    Thread_Control *executing = cpu->executing;<br>
-<br>
-    if ( scheduler != NULL && executing != NULL ) {<br>
-      ( *scheduler->Operations.tick )( scheduler, executing );<br>
-    }<br>
+  if ( scheduler != NULL && executing != NULL ) {<br>
+    ( *scheduler->Operations.tick )( scheduler, executing );<br>
   }<br>
 }<br>
<br>
diff --git a/cpukit/score/include/rtems/score/thread.h b/cpukit/score/include/rtems/score/thread.h<br>
index 73776b3..44b706d 100644<br>
--- a/cpukit/score/include/rtems/score/thread.h<br>
+++ b/cpukit/score/include/rtems/score/thread.h<br>
@@ -347,6 +347,15 @@ typedef struct {<br>
 }   Thread_Wait_information;<br>
<br>
 /**<br>
+ * @brief Information required to manage a thread timer.<br>
+ */<br>
+typedef struct {<br>
+  ISR_LOCK_MEMBER( Lock )<br>
+  Watchdog_Header *header;<br>
+  Watchdog_Control Watchdog;<br>
+} Thread_Timer_information;<br>
+<br>
+/**<br>
  *  The following defines the control block used to manage<br>
  *  each thread proxy.<br>
  *<br>
@@ -400,7 +409,7 @@ typedef struct {<br>
   /** This field is the blocking information for this proxy. */<br>
   Thread_Wait_information  Wait;<br>
   /** This field is the Watchdog used to manage proxy delays and timeouts. */<br>
-  Watchdog_Control         Timer;<br>
+  Thread_Timer_information Timer;<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
   /** This field is the received response packet in an MP system. */<br>
   MP_packet_Prefix        *receive_packet;<br>
@@ -728,7 +737,7 @@ struct _Thread_Control {<br>
   /** This field is the blocking information for this thread. */<br>
   Thread_Wait_information  Wait;<br>
   /** This field is the Watchdog used to manage thread delays and timeouts. */<br>
-  Watchdog_Control         Timer;<br>
+  Thread_Timer_information Timer;<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
   /** This field is the received response packet in an MP system. */<br>
   MP_packet_Prefix        *receive_packet;<br>
diff --git a/cpukit/score/include/rtems/score/threadimpl.h b/cpukit/score/include/rtems/score/threadimpl.h<br>
index 1377543..ec9851d 100644<br>
--- a/cpukit/score/include/rtems/score/threadimpl.h<br>
+++ b/cpukit/score/include/rtems/score/threadimpl.h<br>
@@ -33,6 +33,7 @@<br>
 #include <rtems/score/threadqimpl.h><br>
 #include <rtems/score/todimpl.h><br>
 #include <rtems/score/freechain.h><br>
+#include <rtems/score/watchdogimpl.h><br>
 #include <rtems/config.h><br>
<br>
 #ifdef __cplusplus<br>
@@ -1472,10 +1473,64 @@ RTEMS_INLINE_ROUTINE void _Thread_Wait_set_timeout_code(<br>
 /**<br>
  * @brief General purpose thread wait timeout.<br>
  *<br>
- * @param[in] id Unused.<br>
- * @param[in] arg The thread.<br>
+ * @param[in] watchdog The thread timer watchdog.<br>
  */<br>
-void _Thread_Timeout( Objects_Id id, void *arg );<br>
+void _Thread_Timeout( Watchdog_Control *watchdog );<br>
+<br>
+RTEMS_INLINE_ROUTINE void _Thread_Timer_insert_relative(<br>
+  Thread_Control                 *the_thread,<br>
+  Per_CPU_Control                *cpu,<br>
+  Watchdog_Service_routine_entry  routine,<br>
+  Watchdog_Interval               ticks<br>
+)<br>
+{<br>
+  ISR_lock_Context lock_context;<br>
+<br>
+  _ISR_lock_ISR_disable_and_acquire( &the_thread->Timer.Lock, &lock_context );<br>
+<br>
+  the_thread->Timer.header = &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ];<br>
+  the_thread->Timer.Watchdog.routine = routine;<br>
+  _Watchdog_Per_CPU_insert_relative( &the_thread->Timer.Watchdog, cpu, ticks );<br>
+<br>
+  _ISR_lock_Release_and_ISR_enable( &the_thread->Timer.Lock, &lock_context );<br>
+}<br>
+<br>
+RTEMS_INLINE_ROUTINE void _Thread_Timer_insert_absolute(<br>
+  Thread_Control                 *the_thread,<br>
+  Per_CPU_Control                *cpu,<br>
+  Watchdog_Service_routine_entry  routine,<br>
+  uint64_t                        expire<br>
+)<br>
+{<br>
+  ISR_lock_Context lock_context;<br>
+<br>
+  _ISR_lock_ISR_disable_and_acquire( &the_thread->Timer.Lock, &lock_context );<br>
+<br>
+  the_thread->Timer.header = &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_ABSOLUTE ];<br>
+  the_thread->Timer.Watchdog.routine = routine;<br>
+  _Watchdog_Per_CPU_insert_absolute( &the_thread->Timer.Watchdog, cpu, expire );<br>
+<br>
+  _ISR_lock_Release_and_ISR_enable( &the_thread->Timer.Lock, &lock_context );<br>
+}<br>
+<br>
+RTEMS_INLINE_ROUTINE void _Thread_Timer_remove( Thread_Control *the_thread )<br>
+{<br>
+  ISR_lock_Context lock_context;<br>
+<br>
+  _ISR_lock_ISR_disable_and_acquire( &the_thread->Timer.Lock, &lock_context );<br>
+<br>
+  _Watchdog_Per_CPU_remove(<br>
+    &the_thread->Timer.Watchdog,<br>
+#if defined(RTEMS_SMP)<br>
+    the_thread->Timer.Watchdog.cpu,<br>
+#else<br>
+    _Per_CPU_Get(),<br>
+#endif<br>
+    the_thread->Timer.header<br>
+  );<br>
+<br>
+  _ISR_lock_Release_and_ISR_enable( &the_thread->Timer.Lock, &lock_context );<br>
+}<br>
<br>
 RTEMS_INLINE_ROUTINE void _Thread_Debug_set_real_processor(<br>
   Thread_Control  *the_thread,<br>
diff --git a/cpukit/score/include/rtems/score/todimpl.h b/cpukit/score/include/rtems/score/todimpl.h<br>
index b61651c..b1f8a6d 100644<br>
--- a/cpukit/score/include/rtems/score/todimpl.h<br>
+++ b/cpukit/score/include/rtems/score/todimpl.h<br>
@@ -132,15 +132,6 @@ extern "C" {<br>
  */<br>
 typedef struct {<br>
   /**<br>
-   * @brief Time of day seconds trigger.<br>
-   *<br>
-   * This value specifies the nanoseconds since the last time of day second.<br>
-   * It is updated and evaluated in _TOD_Tickle_ticks().  It is set in<br>
-   * _TOD_Set_with_timestamp().<br>
-   */<br>
-  uint32_t seconds_trigger;<br>
-<br>
-  /**<br>
    *  @brief Indicates if the time of day is set.<br>
    *<br>
    *  This is true if the application has set the current<br>
@@ -273,14 +264,6 @@ static inline uint32_t _TOD_Seconds_since_epoch( void )<br>
 }<br>
<br>
 /**<br>
- *  @brief Increments time of day at each clock tick.<br>
- *<br>
- *  This routine increments the ticks field of the current time of<br>
- *  day at each clock tick.<br>
- */<br>
-void _TOD_Tickle_ticks( void );<br>
-<br>
-/**<br>
  *  @brief Gets number of ticks in a second.<br>
  *<br>
  *  This method returns the number of ticks in a second.<br>
diff --git a/cpukit/score/include/rtems/score/watchdog.h b/cpukit/score/include/rtems/score/watchdog.h<br>
index bad7269..b371f94 100644<br>
--- a/cpukit/score/include/rtems/score/watchdog.h<br>
+++ b/cpukit/score/include/rtems/score/watchdog.h<br>
@@ -20,7 +20,11 @@<br>
 #ifndef _RTEMS_SCORE_WATCHDOG_H<br>
 #define _RTEMS_SCORE_WATCHDOG_H<br>
<br>
-#include <rtems/score/object.h><br>
+#include <rtems/score/basedefs.h><br>
+#include <rtems/score/chain.h><br>
+#include <rtems/score/rbtree.h><br>
+<br>
+struct Per_CPU_Control;<br>
<br>
 #ifdef __cplusplus<br>
 extern "C" {<br>
@@ -39,6 +43,8 @@ extern "C" {<br>
  */<br>
 /**@{*/<br>
<br>
+typedef struct Watchdog_Control Watchdog_Control;<br>
+<br>
 /**<br>
  *  @brief Type is used to specify the length of intervals.<br>
  *<br>
@@ -58,10 +64,8 @@ typedef void Watchdog_Service_routine;<br>
  *<br>
  *  This type define a pointer to a watchdog service routine.<br>
  */<br>
-typedef Watchdog_Service_routine ( *Watchdog_Service_routine_entry )(<br>
-                 Objects_Id,<br>
-                 void *<br>
-             );<br>
+typedef Watchdog_Service_routine<br>
+  ( *Watchdog_Service_routine_entry )( Watchdog_Control * );<br>
<br>
 /**<br>
  *  @brief The constant for indefinite wait.<br>
@@ -72,22 +76,20 @@ typedef Watchdog_Service_routine ( *Watchdog_Service_routine_entry )(<br>
 #define WATCHDOG_NO_TIMEOUT  0<br>
<br>
 /**<br>
- *  @brief Set of the states which a watchdog timer may be at any given time.<br>
- *<br>
- *  This enumerated type is the set of the states in which a<br>
- *  watchdog timer may be at any given time.<br>
+ * @brief The watchdog header to manage scheduled watchdogs.<br>
  */<br>
+typedef struct {<br>
+  /**<br>
+   * @brief Red-black tree of scheduled watchdogs sorted by expiration time.<br>
+   */<br>
+  RBTree_Control Watchdogs;<br>
<br>
-typedef enum {<br>
-  /** This is the state when the watchdog is off all chains */<br>
-  WATCHDOG_INACTIVE,<br>
-  /** This is the state when the watchdog is off all chains, but we are<br>
-   *  currently searching for the insertion point.<br>
+  /**<br>
+   * @brief The scheduled watchdog with the earliest expiration time or NULL in<br>
+   * case no watchdog is scheduled.<br>
    */<br>
-  WATCHDOG_BEING_INSERTED,<br>
-  /** This is the state when the watchdog is on a chain, and allowed to fire. */<br>
-  WATCHDOG_ACTIVE<br>
-} Watchdog_States;<br>
+  RBTree_Node *first;<br>
+} Watchdog_Header;<br>
<br>
 /**<br>
  *  @brief The control block used to manage each watchdog timer.<br>
@@ -95,30 +97,35 @@ typedef enum {<br>
  *  The following record defines the control block used<br>
  *  to manage each watchdog timer.<br>
  */<br>
-typedef struct {<br>
-  /** This field is a Chain Node structure and allows this to be placed on<br>
-   *  chains for set management.<br>
-   */<br>
-  Chain_Node                      Node;<br>
-  /** This field is the state of the watchdog. */<br>
-  Watchdog_States                 state;<br>
-  /** This field is the initially requested interval. */<br>
-  Watchdog_Interval               initial;<br>
-  /** This field is the remaining portion of the interval. */<br>
-  Watchdog_Interval               delta_interval;<br>
-  /** This field is the number of system clock ticks when this was scheduled. */<br>
-  Watchdog_Interval               start_time;<br>
-  /** This field is the number of system clock ticks when this was suspended. */<br>
-  Watchdog_Interval               stop_time;<br>
-  /** This field is the function to invoke. */<br>
-  Watchdog_Service_routine_entry  routine;<br>
-  /** This field is the Id to pass as an argument to the routine. */<br>
-  Objects_Id                      id;<br>
-  /** This field is an untyped pointer to user data that is passed to the<br>
-   *  watchdog handler routine.<br>
+struct Watchdog_Control {<br>
+  /**<br>
+   * @brief Nodes for the watchdog.<br>
    */<br>
-  void                           *user_data;<br>
-}   Watchdog_Control;<br>
+  union {<br>
+    /**<br>
+     * @brief This field is a Red-Black Tree Node structure and allows this to<br>
+     * be placed on Red-Black Trees for set management.<br>
+     */<br>
+    RBTree_Node RBTree;<br>
+<br>
+    /**<br>
+     * @brief This field is a Chain Node structure and allows this to<br>
+     * be placed on Red-Black Trees for set management.<br>
+     */<br>
+    Chain_Node Chain;<br>
+  } Node;<br>
+<br>
+#if defined(RTEMS_SMP)<br>
+  /** @brief This field references the processor of this watchdog control. */<br>
+  struct Per_CPU_Control *cpu;<br>
+#endif<br>
+<br>
+  /** @brief This field is the function to invoke. */<br>
+  Watchdog_Service_routine_entry routine;<br>
+<br>
+  /** @brief This field is the expiration time point. */<br>
+  uint64_t expire;<br>
+};<br>
<br>
 /**<br>
  * @brief The watchdog ticks counter.<br>
diff --git a/cpukit/score/include/rtems/score/watchdogimpl.h b/cpukit/score/include/rtems/score/watchdogimpl.h<br>
index 49ac2a1..0f6947f 100644<br>
--- a/cpukit/score/include/rtems/score/watchdogimpl.h<br>
+++ b/cpukit/score/include/rtems/score/watchdogimpl.h<br>
@@ -21,9 +21,11 @@<br>
<br>
 #include <rtems/score/watchdog.h><br>
 #include <rtems/score/assert.h><br>
-#include <rtems/score/chainimpl.h><br>
 #include <rtems/score/isrlock.h><br>
 #include <rtems/score/percpu.h><br>
+#include <rtems/score/rbtreeimpl.h><br>
+<br>
+#include <sys/timespec.h><br>
<br>
 #ifdef __cplusplus<br>
 extern "C" {<br>
@@ -35,241 +37,116 @@ extern "C" {<br>
  */<br>
<br>
 /**<br>
- * @brief Watchdog initializer for static initialization.<br>
- *<br>
- * @see _Watchdog_Initialize().<br>
- */<br>
-#define WATCHDOG_INITIALIZER( routine, id, user_data ) \<br>
-  { \<br>
-    { NULL, NULL }, \<br>
-    WATCHDOG_INACTIVE, \<br>
-    0, 0, 0, 0, \<br>
-    ( routine ), ( id ), ( user_data ) \<br>
-  }<br>
-<br>
-/**<br>
- * @brief Iterator item to synchronize concurrent insert, remove and tickle<br>
- * operations.<br>
+ * @brief Watchdog states.<br>
  */<br>
-typedef struct {<br>
+typedef enum {<br>
   /**<br>
-   * @brief A node for a Watchdog_Header::Iterators chain.<br>
+   * @brief The watchdog is scheduled and a black node in the red-black tree.<br>
    */<br>
-  Chain_Node Node;<br>
+  WATCHDOG_SCHEDULED_BLACK,<br>
<br>
   /**<br>
-   * @brief The current delta interval of the new watchdog to insert.<br>
+   * @brief The watchdog is scheduled and a black node in the red-black tree.<br>
    */<br>
-  Watchdog_Interval delta_interval;<br>
+  WATCHDOG_SCHEDULED_RED,<br>
<br>
   /**<br>
-   * @brief The current watchdog of the chain on the way to insert the new<br>
-   * watchdog.<br>
+   * @brief The watchdog is inactive.<br>
    */<br>
-  Chain_Node *current;<br>
-} Watchdog_Iterator;<br>
-<br>
-/**<br>
- * @brief Watchdog header.<br>
- */<br>
-typedef struct {<br>
-  /**<br>
-   * @brief ISR lock to protect this watchdog chain.<br>
-   */<br>
-  ISR_LOCK_MEMBER( Lock )<br>
+  WATCHDOG_INACTIVE,<br>
<br>
   /**<br>
-   * @brief The chain of active or transient watchdogs.<br>
-   */<br>
-  Chain_Control Watchdogs;<br>
-<br>
-  /**<br>
-   * @brief Currently active iterators.<br>
+   * @brief The watchdog is on a chain of pending watchdogs.<br>
    *<br>
-   * The iterators are registered in _Watchdog_Insert() and updated in case the<br>
-   * watchdog chain changes.<br>
+   * This state is used by the timer server for example.<br>
    */<br>
-  Chain_Control Iterators;<br>
-} Watchdog_Header;<br>
+  WATCHDOG_PENDING<br>
+} Watchdog_State;<br>
<br>
 /**<br>
- *  @brief Watchdog chain which is managed at ticks.<br>
+ * @brief Watchdog initializer for static initialization.<br>
  *<br>
- *  This is the watchdog chain which is managed at ticks.<br>
- */<br>
-extern Watchdog_Header _Watchdog_Ticks_header;<br>
-<br>
-/**<br>
- *  @brief Watchdog chain which is managed at second boundaries.<br>
+ * The processor of this watchdog is set to processor with index zero.<br>
  *<br>
- *  This is the watchdog chain which is managed at second boundaries.<br>
+ * @see _Watchdog_Preinitialize().<br>
  */<br>
-extern Watchdog_Header _Watchdog_Seconds_header;<br>
-<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Acquire(<br>
-  Watchdog_Header  *header,<br>
-  ISR_lock_Context *lock_context<br>
-)<br>
-{<br>
-  _ISR_lock_ISR_disable_and_acquire( &header->Lock, lock_context );<br>
-}<br>
+#if defined(RTEMS_SMP)<br>
+  #define WATCHDOG_INITIALIZER( routine ) \<br>
+    { \<br>
+      { { { NULL, NULL, NULL, WATCHDOG_INACTIVE } } }, \<br>
+      &_Per_CPU_Information[ 0 ].per_cpu, \<br>
+      ( routine ), \<br>
+      0 \<br>
+    }<br>
+#else<br>
+  #define WATCHDOG_INITIALIZER( routine ) \<br>
+    { \<br>
+      { { { NULL, NULL, NULL, WATCHDOG_INACTIVE } } }, \<br>
+      ( routine ), \<br>
+      0 \<br>
+    }<br>
+#endif<br>
<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Release(<br>
-  Watchdog_Header  *header,<br>
-  ISR_lock_Context *lock_context<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Header_initialize(<br>
+  Watchdog_Header *header<br>
 )<br>
 {<br>
-  _ISR_lock_Release_and_ISR_enable( &header->Lock, lock_context );<br>
+  _RBTree_Initialize_empty( &header->Watchdogs );<br>
+  header->first = NULL;<br>
 }<br>
<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Flash(<br>
-  Watchdog_Header  *header,<br>
-  ISR_lock_Context *lock_context<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Header_destroy(<br>
+  Watchdog_Header *header<br>
 )<br>
 {<br>
-  _ISR_lock_Flash( &header->Lock, lock_context );<br>
+  /* Do nothing */<br>
+  (void) header;<br>
 }<br>
<br>
 /**<br>
- *  @brief Initialize the watchdog handler.<br>
- *<br>
- *  This routine initializes the watchdog handler.  The watchdog<br>
- *  synchronization flag is initialized and the watchdog chains are<br>
- *  initialized and emptied.<br>
- */<br>
-void _Watchdog_Handler_initialization( void );<br>
-<br>
-/**<br>
  *  @brief Performs a watchdog tick.<br>
  *<br>
  *  @param cpu The processor for this watchdog tick.<br>
  */<br>
-void _Watchdog_Tick( Per_CPU_Control *cpu );<br>
-<br>
-/**<br>
- *  @brief Removes @a the_watchdog from the watchdog chain.<br>
- *<br>
- *  This routine removes @a the_watchdog from the watchdog chain on which<br>
- *  it resides and returns the state @a the_watchdog timer was in.<br>
- *<br>
- *  @param[in] header The watchdog chain.<br>
- *  @param[in] the_watchdog will be removed<br>
- *  @retval the state in which @a the_watchdog was in when removed<br>
- */<br>
-Watchdog_States _Watchdog_Remove (<br>
-  Watchdog_Header  *header,<br>
-  Watchdog_Control *the_watchdog<br>
-);<br>
-<br>
-/**<br>
- *  @brief Adjusts the header watchdog chain in the backward direction for<br>
- *  units ticks.<br>
- *<br>
- *  @param[in] header The watchdog chain.<br>
- *  @param[in] units The units of ticks to adjust.<br>
- */<br>
-void _Watchdog_Adjust_backward(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Interval  units<br>
-);<br>
-<br>
-/**<br>
- * @brief Adjusts the watchdogs in backward direction in a locked context.<br>
- *<br>
- * The caller must be the owner of the watchdog lock and will be the owner<br>
- * after the call.<br>
- *<br>
- * @param[in] header The watchdog header.<br>
- * @param[in] units The units of ticks to adjust.<br>
- *<br>
- * @see _Watchdog_Adjust_forward().<br>
- */<br>
-void _Watchdog_Adjust_backward_locked(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Interval  units<br>
-);<br>
+void _Watchdog_Tick( struct Per_CPU_Control *cpu );<br>
<br>
-/**<br>
- *  @brief Adjusts the header watchdog chain in the forward direction for units<br>
- *  ticks.<br>
- *<br>
- *  This may lead to several _Watchdog_Tickle() invocations.<br>
- *<br>
- *  @param[in] header The watchdog chain.<br>
- *  @param[in] units The units of ticks to adjust.<br>
- */<br>
-void _Watchdog_Adjust_forward(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Interval  units<br>
-);<br>
+RTEMS_INLINE_ROUTINE Watchdog_State _Watchdog_Get_state(<br>
+  const Watchdog_Control *the_watchdog<br>
+)<br>
+{<br>
+  return RB_COLOR( &the_watchdog->Node.RBTree, Node );<br>
+}<br>
<br>
-/**<br>
- * @brief Adjusts the watchdogs in forward direction in a locked context.<br>
- *<br>
- * The caller must be the owner of the watchdog lock and will be the owner<br>
- * after the call.  This function may release and acquire the watchdog lock<br>
- * internally.<br>
- *<br>
- * @param[in] header The watchdog header.<br>
- * @param[in] units The units of ticks to adjust.<br>
- * @param[in] lock_context The lock context.<br>
- *<br>
- * @see _Watchdog_Adjust_forward().<br>
- */<br>
-void _Watchdog_Adjust_forward_locked(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Interval  units,<br>
-  ISR_lock_Context  *lock_context<br>
-);<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Set_state(<br>
+  Watchdog_Control *the_watchdog,<br>
+  Watchdog_State    state<br>
+)<br>
+{<br>
+  RB_COLOR( &the_watchdog->Node.RBTree, Node ) = state;<br>
+}<br>
<br>
-/**<br>
- *  @brief Inserts @a the_watchdog into the @a header watchdog chain<br>
- *  for a time of @a units.<br>
- *<br>
- *  This routine inserts @a the_watchdog into the @a header watchdog chain<br>
- *  for a time of @a units.<br>
- *  Update the delta interval counters.<br>
- *<br>
- *  @param[in] header is @a the_watchdog list to insert @a the_watchdog on<br>
- *  @param[in] the_watchdog is the watchdog to insert<br>
- */<br>
-void _Watchdog_Insert (<br>
-  Watchdog_Header  *header,<br>
-  Watchdog_Control *the_watchdog<br>
-);<br>
+RTEMS_INLINE_ROUTINE Per_CPU_Control *_Watchdog_Get_CPU(<br>
+  const Watchdog_Control *the_watchdog<br>
+)<br>
+{<br>
+#if defined(RTEMS_SMP)<br>
+  return the_watchdog->cpu;<br>
+#else<br>
+  return _Per_CPU_Get_by_index( 0 );<br>
+#endif<br>
+}<br>
<br>
-/**<br>
- * @brief Inserts the watchdog in a locked context.<br>
- *<br>
- * The caller must be the owner of the watchdog lock and will be the owner<br>
- * after the call.  This function may release and acquire the watchdog lock<br>
- * internally.<br>
- *<br>
- * @param[in] header The watchdog header.<br>
- * @param[in] the_watchdog The watchdog.<br>
- * @param[in] lock_context The lock context.<br>
- *<br>
- * @see _Watchdog_Insert().<br>
- */<br>
-void _Watchdog_Insert_locked(<br>
-  Watchdog_Header  *header,<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Set_CPU(<br>
   Watchdog_Control *the_watchdog,<br>
-  ISR_lock_Context *lock_context<br>
-);<br>
-<br>
-/**<br>
- *  @brief This routine is invoked at appropriate intervals to update<br>
- *  the @a header watchdog chain.<br>
- *<br>
- *  This routine is invoked at appropriate intervals to update<br>
- *  the @a header watchdog chain.<br>
- *  This routine decrements the delta counter in response to a tick.<br>
- *<br>
- *  @param[in] header is the watchdog chain to tickle<br>
- */<br>
-void _Watchdog_Tickle (<br>
-  Watchdog_Header *header<br>
-);<br>
+  Per_CPU_Control  *cpu<br>
+)<br>
+{<br>
+#if defined(RTEMS_SMP)<br>
+  the_watchdog->cpu = cpu;<br>
+#else<br>
+  (void) cpu;<br>
+#endif<br>
+}<br>
<br>
 /**<br>
  * @brief Pre-initializes a watchdog.<br>
@@ -280,228 +157,261 @@ void _Watchdog_Tickle (<br>
  * @param[in] the_watchdog The uninitialized watchdog.<br>
  */<br>
 RTEMS_INLINE_ROUTINE void _Watchdog_Preinitialize(<br>
-  Watchdog_Control *the_watchdog<br>
+  Watchdog_Control *the_watchdog,<br>
+  Per_CPU_Control  *cpu<br>
 )<br>
 {<br>
-  the_watchdog->state = WATCHDOG_INACTIVE;<br>
+  _Watchdog_Set_CPU( the_watchdog, cpu );<br>
+  _Watchdog_Set_state( the_watchdog, WATCHDOG_INACTIVE );<br>
+<br>
 #if defined(RTEMS_DEBUG)<br>
   the_watchdog->routine = NULL;<br>
-  the_watchdog->id = 0;<br>
-  the_watchdog->user_data = NULL;<br>
+  the_watchdog->expire = 0;<br>
 #endif<br>
 }<br>
<br>
 /**<br>
- * This routine initializes the specified watchdog.  The watchdog is<br>
- * made inactive, the watchdog id and handler routine are set to the<br>
- * specified values.<br>
+ * @brief Initializes a watchdog with a new service routine.<br>
+ *<br>
+ * The watchdog must be inactive.<br>
  */<br>
-<br>
 RTEMS_INLINE_ROUTINE void _Watchdog_Initialize(<br>
   Watchdog_Control               *the_watchdog,<br>
-  Watchdog_Service_routine_entry  routine,<br>
-  Objects_Id                      id,<br>
-  void                           *user_data<br>
+  Watchdog_Service_routine_entry  routine<br>
 )<br>
 {<br>
-  _Assert( the_watchdog->state == WATCHDOG_INACTIVE );<br>
-  the_watchdog->routine   = routine;<br>
-  the_watchdog->id        = id;<br>
-  the_watchdog->user_data = user_data;<br>
+  _Assert( _Watchdog_Get_state( the_watchdog ) == WATCHDOG_INACTIVE );<br>
+  the_watchdog->routine = routine;<br>
 }<br>
<br>
-/**<br>
- * This routine returns true if the watchdog timer is in the ACTIVE<br>
- * state, and false otherwise.<br>
- */<br>
-<br>
-RTEMS_INLINE_ROUTINE bool _Watchdog_Is_active(<br>
-  Watchdog_Control *the_watchdog<br>
-)<br>
-{<br>
-<br>
-  return ( the_watchdog->state == WATCHDOG_ACTIVE );<br>
+void _Watchdog_Do_tickle(<br>
+  Watchdog_Header  *header,<br>
+  uint64_t          now,<br>
+#if defined(RTEMS_SMP)<br>
+  ISR_lock_Control *lock,<br>
+#endif<br>
+  ISR_lock_Context *lock_context<br>
+);<br>
<br>
-}<br>
+#if defined(RTEMS_SMP)<br>
+  #define _Watchdog_Tickle( header, now, lock, lock_context ) \<br>
+    _Watchdog_Do_tickle( header, now, lock, lock_context )<br>
+#else<br>
+  #define _Watchdog_Tickle( header, now, lock, lock_context ) \<br>
+    _Watchdog_Do_tickle( header, now, lock_context )<br>
+#endif<br>
<br>
 /**<br>
- * This routine activates THE_WATCHDOG timer which is already<br>
- * on a watchdog chain.<br>
+ * @brief Inserts a watchdog into the set of scheduled watchdogs according to<br>
+ * the specified expiration time.<br>
+ *<br>
+ * The watchdog must be inactive.<br>
  */<br>
+void _Watchdog_Insert(<br>
+  Watchdog_Header  *header,<br>
+  Watchdog_Control *the_watchdog,<br>
+  uint64_t          expire<br>
+);<br>
<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Activate(<br>
+/**<br>
+ * @brief In case the watchdog is scheduled, then it is removed from the set of<br>
+ * scheduled watchdogs.<br>
+ *<br>
+ * The watchdog must be initialized before this call.<br>
+ */<br>
+void _Watchdog_Remove(<br>
+  Watchdog_Header  *header,<br>
   Watchdog_Control *the_watchdog<br>
-)<br>
-{<br>
-<br>
-  the_watchdog->state = WATCHDOG_ACTIVE;<br>
-<br>
-}<br>
+);<br>
<br>
 /**<br>
- * This routine is invoked at each clock tick to update the ticks<br>
- * watchdog chain.<br>
+ * @brief In case the watchdog is scheduled, then it is removed from the set of<br>
+ * scheduled watchdogs.<br>
+ *<br>
+ * The watchdog must be initialized before this call.<br>
+ *<br>
+ * @retval 0 The now time is greater than or equal to the expiration time of<br>
+ * the watchdog.<br>
+ * @retval other The difference of the now and expiration time.<br>
  */<br>
-<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Tickle_ticks( void )<br>
+RTEMS_INLINE_ROUTINE uint64_t _Watchdog_Cancel(<br>
+  Watchdog_Header  *header,<br>
+  Watchdog_Control *the_watchdog,<br>
+  uint64_t          now<br>
+)<br>
 {<br>
+  uint64_t expire;<br>
+  uint64_t remaining;<br>
<br>
-  _Watchdog_Tickle( &_Watchdog_Ticks_header );<br>
-<br>
-}<br>
-<br>
-/**<br>
- * This routine is invoked at each clock tick to update the seconds<br>
- * watchdog chain.<br>
- */<br>
+  expire = the_watchdog->expire;<br>
<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Tickle_seconds( void )<br>
-{<br>
+  if ( now < expire ) {<br>
+    remaining = expire - now;<br>
+  } else {<br>
+    remaining = 0;<br>
+  }<br>
<br>
-  _Watchdog_Tickle( &_Watchdog_Seconds_header );<br>
+  _Watchdog_Remove( header, the_watchdog );<br>
<br>
+  return remaining;<br>
 }<br>
<br>
-/**<br>
- * This routine inserts THE_WATCHDOG into the ticks watchdog chain<br>
- * for a time of UNITS ticks.  The INSERT_MODE indicates whether<br>
- * THE_WATCHDOG is to be activated automatically or later, explicitly<br>
- * by the caller.<br>
- */<br>
-<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Insert_ticks(<br>
-  Watchdog_Control      *the_watchdog,<br>
-  Watchdog_Interval      units<br>
+RTEMS_INLINE_ROUTINE bool _Watchdog_Is_scheduled(<br>
+  const Watchdog_Control *the_watchdog<br>
 )<br>
 {<br>
-<br>
-  the_watchdog->initial = units;<br>
-<br>
-  _Watchdog_Insert( &_Watchdog_Ticks_header, the_watchdog );<br>
-<br>
+  return _Watchdog_Get_state( the_watchdog ) < WATCHDOG_INACTIVE;<br>
 }<br>
<br>
-/**<br>
- * This routine inserts THE_WATCHDOG into the seconds watchdog chain<br>
- * for a time of UNITS seconds.  The INSERT_MODE indicates whether<br>
- * THE_WATCHDOG is to be activated automatically or later, explicitly<br>
- * by the caller.<br>
- */<br>
-<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Insert_seconds(<br>
-  Watchdog_Control      *the_watchdog,<br>
-  Watchdog_Interval      units<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Next_first(<br>
+  Watchdog_Header  *header,<br>
+  Watchdog_Control *the_watchdog<br>
 )<br>
 {<br>
+  RBTree_Node *node = _RBTree_Right( &the_watchdog->Node.RBTree );<br>
<br>
-  the_watchdog->initial = units;<br>
+  if ( node != NULL ) {<br>
+    RBTree_Node *left;<br>
<br>
-  _Watchdog_Insert( &_Watchdog_Seconds_header, the_watchdog );<br>
+    while ( ( left = _RBTree_Left( node ) ) != NULL ) {<br>
+      node = left;<br>
+    }<br>
<br>
+    header->first = node;<br>
+  } else {<br>
+    header->first = _RBTree_Parent( &the_watchdog->Node.RBTree );<br>
+  }<br>
 }<br>
<br>
-RTEMS_INLINE_ROUTINE Watchdog_States _Watchdog_Remove_ticks(<br>
-  Watchdog_Control *the_watchdog<br>
+RTEMS_INLINE_ROUTINE uint64_t _Watchdog_Ticks_from_seconds(<br>
+  uint32_t seconds<br>
 )<br>
 {<br>
-  return _Watchdog_Remove( &_Watchdog_Ticks_header, the_watchdog );<br>
-}<br>
+  uint64_t ticks = seconds;<br>
<br>
-RTEMS_INLINE_ROUTINE Watchdog_States _Watchdog_Remove_seconds(<br>
-  Watchdog_Control *the_watchdog<br>
-)<br>
-{<br>
-  return _Watchdog_Remove( &_Watchdog_Seconds_header, the_watchdog );<br>
-}<br>
+  ticks <<= 30;<br>
<br>
-/**<br>
- * This routine resets THE_WATCHDOG timer to its state at INSERT<br>
- * time.  This routine is valid only on interval watchdog timers<br>
- * and is used to make an interval watchdog timer fire "every" so<br>
- * many ticks.<br>
- */<br>
+  return ticks;<br>
+}<br>
<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Reset_ticks(<br>
-  Watchdog_Control *the_watchdog<br>
+RTEMS_INLINE_ROUTINE uint64_t _Watchdog_Ticks_from_timespec(<br>
+  const struct timespec *ts<br>
 )<br>
 {<br>
+  uint64_t ticks = (uint64_t) ts->tv_sec;<br>
<br>
-  _Watchdog_Remove_ticks( the_watchdog );<br>
+  _Assert( ticks < 0x400000000 );<br>
+  _Assert( ts->tv_nsec >= 0 );<br>
+  _Assert( ts->tv_nsec < 1000000000 );<br>
<br>
-  _Watchdog_Insert( &_Watchdog_Ticks_header, the_watchdog );<br>
+  ticks <<= 30;<br>
+  ticks |= ts->tv_nsec;<br>
<br>
+  return ticks;<br>
 }<br>
<br>
-/**<br>
- * This routine returns a pointer to the watchdog timer following<br>
- * THE_WATCHDOG on the watchdog chain.<br>
- */<br>
+#define _Watchdog_Per_CPU_acquire( cpu, lock_context ) \<br>
+  _ISR_lock_Acquire( &( cpu )->Watchdog.Lock, lock_context )<br>
<br>
-RTEMS_INLINE_ROUTINE Watchdog_Control *_Watchdog_Next(<br>
-  Watchdog_Control *the_watchdog<br>
+#define _Watchdog_Per_CPU_release( cpu, lock_context ) \<br>
+  _ISR_lock_Release( &( cpu )->Watchdog.Lock, lock_context )<br>
+<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Per_CPU_insert_relative(<br>
+  Watchdog_Control *the_watchdog,<br>
+  Per_CPU_Control  *cpu,<br>
+  uint32_t          ticks<br>
 )<br>
 {<br>
+  ISR_lock_Context lock_context;<br>
<br>
-  return ( (Watchdog_Control *) the_watchdog->Node.next );<br>
+  _Watchdog_Set_CPU( the_watchdog, cpu );<br>
<br>
+  _Watchdog_Per_CPU_acquire( cpu, &lock_context );<br>
+  _Watchdog_Insert(<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+    the_watchdog,<br>
+    cpu->Watchdog.ticks + ticks<br>
+  );<br>
+  _Watchdog_Per_CPU_release( cpu, &lock_context );<br>
 }<br>
<br>
-/**<br>
- * This routine returns a pointer to the watchdog timer preceding<br>
- * THE_WATCHDOG on the watchdog chain.<br>
- */<br>
-<br>
-RTEMS_INLINE_ROUTINE Watchdog_Control *_Watchdog_Previous(<br>
-  Watchdog_Control *the_watchdog<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Per_CPU_insert_absolute(<br>
+  Watchdog_Control *the_watchdog,<br>
+  Per_CPU_Control  *cpu,<br>
+  uint64_t          expire<br>
 )<br>
 {<br>
+  ISR_lock_Context lock_context;<br>
<br>
-  return ( (Watchdog_Control *) the_watchdog->Node.previous );<br>
+  _Watchdog_Set_CPU( the_watchdog, cpu );<br>
<br>
+  _Watchdog_Per_CPU_acquire( cpu, &lock_context );<br>
+  _Watchdog_Insert(<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_ABSOLUTE ],<br>
+    the_watchdog,<br>
+    expire<br>
+  );<br>
+  _Watchdog_Per_CPU_release( cpu, &lock_context );<br>
 }<br>
<br>
-/**<br>
- * This routine returns a pointer to the first watchdog timer<br>
- * on the watchdog chain HEADER.<br>
- */<br>
-<br>
-RTEMS_INLINE_ROUTINE Watchdog_Control *_Watchdog_First(<br>
-  Watchdog_Header *header<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Per_CPU_remove(<br>
+  Watchdog_Control *the_watchdog,<br>
+  Per_CPU_Control  *cpu,<br>
+  Watchdog_Header  *header<br>
 )<br>
 {<br>
-<br>
-  return ( (Watchdog_Control *) _Chain_First( &header->Watchdogs ) );<br>
-<br>
+  ISR_lock_Context lock_context;<br>
+<br>
+  _Watchdog_Per_CPU_acquire( cpu, &lock_context );<br>
+  _Watchdog_Remove(<br>
+    header,<br>
+    the_watchdog<br>
+  );<br>
+  _Watchdog_Per_CPU_release( cpu, &lock_context );<br>
 }<br>
<br>
-/**<br>
- * This routine returns a pointer to the last watchdog timer<br>
- * on the watchdog chain HEADER.<br>
- */<br>
-<br>
-RTEMS_INLINE_ROUTINE Watchdog_Control *_Watchdog_Last(<br>
-  Watchdog_Header *header<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Per_CPU_remove_relative(<br>
+  Watchdog_Control *the_watchdog<br>
 )<br>
 {<br>
-<br>
-  return ( (Watchdog_Control *) _Chain_Last( &header->Watchdogs ) );<br>
-<br>
+  Per_CPU_Control *cpu;<br>
+<br>
+  cpu = _Watchdog_Get_CPU( the_watchdog );<br>
+  _Watchdog_Per_CPU_remove(<br>
+    the_watchdog,<br>
+    cpu,<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ]<br>
+  );<br>
 }<br>
<br>
-RTEMS_INLINE_ROUTINE bool _Watchdog_Is_empty(<br>
-  const Watchdog_Header *header<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Per_CPU_remove_absolute(<br>
+  Watchdog_Control *the_watchdog<br>
 )<br>
 {<br>
-  return _Chain_Is_empty( &header->Watchdogs );<br>
+  Per_CPU_Control *cpu;<br>
+<br>
+  cpu = _Watchdog_Get_CPU( the_watchdog );<br>
+  _Watchdog_Per_CPU_remove(<br>
+    the_watchdog,<br>
+    cpu,<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_ABSOLUTE ]<br>
+  );<br>
 }<br>
<br>
-RTEMS_INLINE_ROUTINE void _Watchdog_Header_initialize(<br>
-  Watchdog_Header *header<br>
+RTEMS_INLINE_ROUTINE void _Watchdog_Per_CPU_tickle_absolute(<br>
+  Per_CPU_Control *cpu,<br>
+  uint64_t         now<br>
 )<br>
 {<br>
-  _ISR_lock_Initialize( &header->Lock, "Watchdog" );<br>
-  _Chain_Initialize_empty( &header->Watchdogs );<br>
-  _Chain_Initialize_empty( &header->Iterators );<br>
+  ISR_lock_Context lock_context;<br>
+<br>
+  _ISR_lock_ISR_disable_and_acquire( &cpu->Watchdog.Lock, &lock_context );<br>
+  _Watchdog_Tickle(<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_ABSOLUTE ],<br>
+    now,<br>
+    &cpu->Watchdog.Lock,<br>
+    &lock_context<br>
+  );<br>
 }<br>
<br>
 /** @} */<br>
diff --git a/cpukit/score/src/condition.c b/cpukit/score/src/condition.c<br>
index 22c2a9b..4206819 100644<br>
--- a/cpukit/score/src/condition.c<br>
+++ b/cpukit/score/src/condition.c<br>
@@ -282,7 +282,7 @@ static int _Condition_Wake( struct _Condition_Control *_condition, int count )<br>
<br>
       next = _Chain_Next( node );<br>
       thread = THREAD_CHAIN_NODE_TO_THREAD( node );<br>
-      _Watchdog_Remove_ticks( &thread->Timer );<br>
+      _Thread_Timer_remove( thread );<br>
       _Thread_Unblock( thread );<br>
<br>
       node = next;<br>
diff --git a/cpukit/score/src/coretodset.c b/cpukit/score/src/coretodset.c<br>
index 3230179..b2efc07 100644<br>
--- a/cpukit/score/src/coretodset.c<br>
+++ b/cpukit/score/src/coretodset.c<br>
@@ -26,30 +26,26 @@ void _TOD_Set_with_timestamp(<br>
   const Timestamp_Control *tod_as_timestamp<br>
 )<br>
 {<br>
-  struct timespec ts;<br>
-  uint32_t nanoseconds;<br>
-  Watchdog_Interval seconds_next;<br>
-  Watchdog_Interval seconds_now;<br>
-  Watchdog_Header *header;<br>
+  struct timespec tod_as_timespec;<br>
+  uint64_t        tod_as_ticks;<br>
+  uint32_t        cpu_count;<br>
+  uint32_t        cpu_index;<br>
<br>
-  _Timestamp_To_timespec( tod_as_timestamp, &ts );<br>
-  nanoseconds = ts.tv_nsec;<br>
-  seconds_next = ts.tv_sec;<br>
+  _Timestamp_To_timespec( tod_as_timestamp, &tod_as_timespec );<br>
<br>
   _Thread_Disable_dispatch();<br>
<br>
-  seconds_now = _TOD_Seconds_since_epoch();<br>
+  _Timecounter_Set_clock( &tod_as_timespec );<br>
<br>
-  _Timecounter_Set_clock( &ts );<br>
+  tod_as_ticks = _Watchdog_Ticks_from_timespec( &tod_as_timespec );<br>
+  cpu_count = _SMP_Get_processor_count();<br>
<br>
-  header = &_Watchdog_Seconds_header;<br>
+  for ( cpu_index = 0 ; cpu_index < cpu_count ; ++cpu_index ) {<br>
+    Per_CPU_Control *cpu = _Per_CPU_Get_by_index( cpu_index );<br>
<br>
-  if ( seconds_next < seconds_now )<br>
-    _Watchdog_Adjust_backward( header, seconds_now - seconds_next );<br>
-  else<br>
-    _Watchdog_Adjust_forward( header, seconds_next - seconds_now );<br>
+    _Watchdog_Per_CPU_tickle_absolute( cpu, tod_as_ticks );<br>
+  }<br>
<br>
-  _TOD.seconds_trigger = nanoseconds;<br>
   _TOD.is_set = true;<br>
<br>
   _Thread_Enable_dispatch();<br>
diff --git a/cpukit/score/src/coretodtickle.c b/cpukit/score/src/coretodtickle.c<br>
deleted file mode 100644<br>
index 3d7c71e..0000000<br>
--- a/cpukit/score/src/coretodtickle.c<br>
+++ /dev/null<br>
@@ -1,36 +0,0 @@<br>
-/**<br>
- * @file<br>
- *<br>
- * @brief Increments time of day at each clock tick<br>
- *<br>
- * @ingroup ScoreTOD<br>
- */<br>
-<br>
-/*  COPYRIGHT (c) 1989-2014.<br>
- *  On-Line Applications Research Corporation (OAR).<br>
- *<br>
- *  The license and distribution terms for this file may be<br>
- *  found in the file LICENSE in this distribution or at<br>
- *  <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
- */<br>
-<br>
-#if HAVE_CONFIG_H<br>
-#include "config.h"<br>
-#endif<br>
-<br>
-#include <rtems/score/todimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
-#include <rtems/config.h><br>
-<br>
-void _TOD_Tickle_ticks( void )<br>
-{<br>
-  /* Update the counter of ticks since boot */<br>
-  _Watchdog_Ticks_since_boot += 1;<br>
-<br>
-  _TOD.seconds_trigger += rtems_configuration_get_nanoseconds_per_tick();<br>
-  if ( _TOD.seconds_trigger >= 1000000000UL ) {<br>
-    _TOD.seconds_trigger -= 1000000000UL;<br>
-    _Watchdog_Tickle_seconds();<br>
-  }<br>
-}<br>
-<br>
diff --git a/cpukit/score/src/kern_tc.c b/cpukit/score/src/kern_tc.c<br>
index e56c292..316a16f 100644<br>
--- a/cpukit/score/src/kern_tc.c<br>
+++ b/cpukit/score/src/kern_tc.c<br>
@@ -1971,6 +1971,7 @@ tc_ticktock(int cnt)<br>
                return;<br>
        count = 0;<br>
 #else /* __rtems__ */<br>
+#include <rtems/score/smp.h><br>
 void<br>
 _Timecounter_Tick(void)<br>
 {<br>
@@ -2021,7 +2022,7 @@ _Timecounter_Tick_simple(uint32_t delta, uint32_t offset,<br>
<br>
        _Timecounter_Release(lock_context);<br>
<br>
-       _Watchdog_Tick(_Per_CPU_Get());<br>
+       _Watchdog_Tick(_Per_CPU_Get_snapshot());<br>
 }<br>
 #endif /* __rtems__ */<br>
<br>
diff --git a/cpukit/score/src/smp.c b/cpukit/score/src/smp.c<br>
index 9d9507d..85256b0 100644<br>
--- a/cpukit/score/src/smp.c<br>
+++ b/cpukit/score/src/smp.c<br>
@@ -87,6 +87,7 @@ void _SMP_Handler_initialize( void )<br>
   for ( cpu_index = 0 ; cpu_index < cpu_max; ++cpu_index ) {<br>
     Per_CPU_Control *cpu = _Per_CPU_Get_by_index( cpu_index );<br>
<br>
+    _ISR_lock_Initialize( &cpu->Watchdog.Lock, "Watchdog" );<br>
     _SMP_ticket_lock_Initialize( &cpu->Lock );<br>
     _SMP_lock_Stats_initialize( &cpu->Lock_stats, "Per-CPU" );<br>
   }<br>
diff --git a/cpukit/score/src/threadinitialize.c b/cpukit/score/src/threadinitialize.c<br>
index a49406f..0b5fd3a 100644<br>
--- a/cpukit/score/src/threadinitialize.c<br>
+++ b/cpukit/score/src/threadinitialize.c<br>
@@ -160,6 +160,10 @@ bool _Thread_Initialize(<br>
   the_thread->Start.budget_algorithm = budget_algorithm;<br>
   the_thread->Start.budget_callout   = budget_callout;<br>
<br>
+  _ISR_lock_Initialize( &the_thread->Timer.Lock, "Thread Timer" );<br>
+  the_thread->Timer.header = &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ];<br>
+  _Watchdog_Preinitialize( &the_thread->Timer.Watchdog, cpu );<br>
+<br>
   switch ( budget_algorithm ) {<br>
     case THREAD_CPU_BUDGET_ALGORITHM_NONE:<br>
     case THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE:<br>
diff --git a/cpukit/score/src/threadqenqueue.c b/cpukit/score/src/threadqenqueue.c<br>
index 960783c..07618fc 100644<br>
--- a/cpukit/score/src/threadqenqueue.c<br>
+++ b/cpukit/score/src/threadqenqueue.c<br>
@@ -35,7 +35,7 @@<br>
<br>
 static void _Thread_queue_Unblock( Thread_Control *the_thread )<br>
 {<br>
-  _Watchdog_Remove_ticks( &the_thread->Timer );<br>
+  _Thread_Timer_remove( the_thread );<br>
   _Thread_Unblock( the_thread );<br>
<br>
 #if defined(RTEMS_MULTIPROCESSING)<br>
@@ -84,8 +84,12 @@ void _Thread_queue_Enqueue_critical(<br>
    */<br>
   if ( timeout != WATCHDOG_NO_TIMEOUT ) {<br>
     _Thread_Wait_set_timeout_code( the_thread, timeout_code );<br>
-    _Watchdog_Initialize( &the_thread->Timer, _Thread_Timeout, 0, the_thread );<br>
-    _Watchdog_Insert_ticks( &the_thread->Timer, timeout );<br>
+    _Thread_Timer_insert_relative(<br>
+      the_thread,<br>
+      cpu_self,<br>
+      _Thread_Timeout,<br>
+      timeout<br>
+    );<br>
   }<br>
<br>
   success = _Thread_Wait_flags_try_change(<br>
diff --git a/cpukit/score/src/threadrestart.c b/cpukit/score/src/threadrestart.c<br>
index 03b1fba..d366f97 100644<br>
--- a/cpukit/score/src/threadrestart.c<br>
+++ b/cpukit/score/src/threadrestart.c<br>
@@ -84,7 +84,7 @@ static void _Thread_Make_zombie( Thread_Control *the_thread )<br>
<br>
   _Thread_Set_state( the_thread, STATES_ZOMBIE );<br>
   _Thread_queue_Extract_with_proxy( the_thread );<br>
-  _Watchdog_Remove_ticks( &the_thread->Timer );<br>
+  _Thread_Timer_remove( the_thread );<br>
<br>
   _ISR_lock_ISR_disable_and_acquire( &zombies->Lock, &lock_context );<br>
   _Chain_Append_unprotected( &zombies->Chain, &the_thread->Object.Node );<br>
@@ -191,7 +191,9 @@ static void _Thread_Start_life_change_for_executing(<br>
   Thread_Control *executing<br>
 )<br>
 {<br>
-  _Assert( executing->Timer.state == WATCHDOG_INACTIVE );<br>
+  _Assert(<br>
+    _Watchdog_Get_state( &executing->Timer.Watchdog ) == WATCHDOG_INACTIVE<br>
+  );<br>
   _Assert(<br>
     executing->current_state == STATES_READY<br>
       || executing->current_state == STATES_SUSPENDED<br>
@@ -246,7 +248,9 @@ void _Thread_Life_action_handler(<br>
       /* Someone deleted us in the mean-time */<br>
       _Thread_Start_life_change_for_executing( executing );<br>
     } else {<br>
-      _Assert( executing->Timer.state == WATCHDOG_INACTIVE );<br>
+      _Assert(<br>
+        _Watchdog_Get_state( &executing->Timer.Watchdog ) == WATCHDOG_INACTIVE<br>
+      );<br>
       _Assert(<br>
         executing->current_state == STATES_READY<br>
           || executing->current_state == STATES_SUSPENDED<br>
@@ -274,7 +278,7 @@ static void _Thread_Start_life_change(<br>
<br>
   _Thread_Set_state( the_thread, STATES_RESTARTING );<br>
   _Thread_queue_Extract_with_proxy( the_thread );<br>
-  _Watchdog_Remove_ticks( &the_thread->Timer );<br>
+  _Thread_Timer_remove( the_thread );<br>
   _Thread_Change_priority(<br>
     the_thread,<br>
     priority,<br>
diff --git a/cpukit/score/src/threadtimeout.c b/cpukit/score/src/threadtimeout.c<br>
index 8ecaebd..59f6bd9 100644<br>
--- a/cpukit/score/src/threadtimeout.c<br>
+++ b/cpukit/score/src/threadtimeout.c<br>
@@ -33,7 +33,7 @@ static void _Thread_Do_timeout( Thread_Control *the_thread )<br>
   _Thread_Lock_restore_default( the_thread );<br>
 }<br>
<br>
-void _Thread_Timeout( Objects_Id id, void *arg )<br>
+void _Thread_Timeout( Watchdog_Control *watchdog )<br>
 {<br>
   Thread_Control    *the_thread;<br>
   void              *thread_lock;<br>
@@ -41,7 +41,7 @@ void _Thread_Timeout( Objects_Id id, void *arg )<br>
   Thread_Wait_flags  wait_flags;<br>
   bool               unblock;<br>
<br>
-  the_thread = arg;<br>
+  the_thread = RTEMS_CONTAINER_OF( watchdog, Thread_Control, Timer.Watchdog );<br>
   thread_lock = _Thread_Lock_acquire( the_thread, &lock_context );<br>
<br>
   wait_flags = _Thread_Wait_flags_get( the_thread );<br>
diff --git a/cpukit/score/src/watchdog.c b/cpukit/score/src/watchdog.c<br>
deleted file mode 100644<br>
index 8d172fb..0000000<br>
--- a/cpukit/score/src/watchdog.c<br>
+++ /dev/null<br>
@@ -1,36 +0,0 @@<br>
-/**<br>
- *  @file<br>
- *<br>
- *  @brief Watchdog Handler Initialization<br>
- *  @ingroup ScoreWatchdog<br>
- */<br>
-<br>
-/*<br>
- *  Watchdog Handler<br>
- *<br>
- *<br>
- *  COPYRIGHT (c) 1989-1999.<br>
- *  On-Line Applications Research Corporation (OAR).<br>
- *<br>
- *  The license and distribution terms for this file may be<br>
- *  found in the file LICENSE in this distribution or at<br>
- *  <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
- */<br>
-<br>
-#if HAVE_CONFIG_H<br>
-#include "config.h"<br>
-#endif<br>
-<br>
-#include <rtems/score/watchdogimpl.h><br>
-<br>
-Watchdog_Header _Watchdog_Ticks_header;<br>
-<br>
-Watchdog_Header _Watchdog_Seconds_header;<br>
-<br>
-void _Watchdog_Handler_initialization( void )<br>
-{<br>
-  _Watchdog_Ticks_since_boot = 0;<br>
-<br>
-  _Watchdog_Header_initialize( &_Watchdog_Ticks_header );<br>
-  _Watchdog_Header_initialize( &_Watchdog_Seconds_header );<br>
-}<br>
diff --git a/cpukit/score/src/watchdogadjust.c b/cpukit/score/src/watchdogadjust.c<br>
deleted file mode 100644<br>
index 32b5f79..0000000<br>
--- a/cpukit/score/src/watchdogadjust.c<br>
+++ /dev/null<br>
@@ -1,80 +0,0 @@<br>
-/**<br>
- *  @file<br>
- *<br>
- *  @brief Watchdog Adjust<br>
- *  @ingroup ScoreWatchdog<br>
- */<br>
-<br>
-/*<br>
- *  COPYRIGHT (c) 1989-1999.<br>
- *  On-Line Applications Research Corporation (OAR).<br>
- *<br>
- *  The license and distribution terms for this file may be<br>
- *  found in the file LICENSE in this distribution or at<br>
- *  <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
- */<br>
-<br>
-#if HAVE_CONFIG_H<br>
-#include "config.h"<br>
-#endif<br>
-<br>
-#include <rtems/score/watchdogimpl.h><br>
-<br>
-void _Watchdog_Adjust_backward_locked(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Interval  units<br>
-)<br>
-{<br>
-  if ( !_Watchdog_Is_empty( header ) ) {<br>
-     _Watchdog_First( header )->delta_interval += units;<br>
-  }<br>
-}<br>
-<br>
-void _Watchdog_Adjust_backward(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Interval  units<br>
-)<br>
-{<br>
-  ISR_lock_Context lock_context;<br>
-<br>
-  _Watchdog_Acquire( header, &lock_context );<br>
-  _Watchdog_Adjust_backward_locked( header, units );<br>
-  _Watchdog_Release( header, &lock_context );<br>
-}<br>
-<br>
-void _Watchdog_Adjust_forward_locked(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Interval  units,<br>
-  ISR_lock_Context  *lock_context<br>
-)<br>
-{<br>
-  while ( !_Watchdog_Is_empty( header ) && units > 0 ) {<br>
-    Watchdog_Control *first = _Watchdog_First( header );<br>
-<br>
-    if ( units < first->delta_interval ) {<br>
-      first->delta_interval -= units;<br>
-      break;<br>
-    } else {<br>
-      units -= first->delta_interval;<br>
-      first->delta_interval = 1;<br>
-<br>
-      _Watchdog_Release( header, lock_context );<br>
-<br>
-      _Watchdog_Tickle( header );<br>
-<br>
-      _Watchdog_Acquire( header, lock_context );<br>
-    }<br>
-  }<br>
-}<br>
-<br>
-void _Watchdog_Adjust_forward(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Interval  units<br>
-)<br>
-{<br>
-  ISR_lock_Context lock_context;<br>
-<br>
-  _Watchdog_Acquire( header, &lock_context );<br>
-  _Watchdog_Adjust_forward_locked( header, units, &lock_context );<br>
-  _Watchdog_Release( header, &lock_context );<br>
-}<br>
diff --git a/cpukit/score/src/watchdoginsert.c b/cpukit/score/src/watchdoginsert.c<br>
index db15f55..22fc7a5 100644<br>
--- a/cpukit/score/src/watchdoginsert.c<br>
+++ b/cpukit/score/src/watchdoginsert.c<br>
@@ -1,17 +1,22 @@<br>
 /**<br>
- * @file<br>
+ * @file<br>
  *<br>
  * @brief Watchdog Insert<br>
  * @ingroup ScoreWatchdog<br>
  */<br>
-<br>
+<br>
 /*<br>
- *  COPYRIGHT (c) 1989-1999.<br>
- *  On-Line Applications Research Corporation (OAR).<br>
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.<br>
+ *<br>
+ *  embedded brains GmbH<br>
+ *  Dornierstr. 4<br>
+ *  82178 Puchheim<br>
+ *  Germany<br>
+ *  <<a href="mailto:rtems@embedded-brains.de">rtems@embedded-brains.de</a>><br>
  *<br>
- *  The license and distribution terms for this file may be<br>
- *  found in the file LICENSE in this distribution or at<br>
- *  <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
+ * The license and distribution terms for this file may be<br>
+ * found in the file LICENSE in this distribution or at<br>
+ * <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
  */<br>
<br>
 #if HAVE_CONFIG_H<br>
@@ -20,106 +25,41 @@<br>
<br>
 #include <rtems/score/watchdogimpl.h><br>
<br>
-static void _Watchdog_Insert_fixup(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Control  *the_watchdog,<br>
-  Watchdog_Interval  delta,<br>
-  Watchdog_Control  *next_watchdog,<br>
-  Watchdog_Interval  delta_next<br>
-)<br>
-{<br>
-  const Chain_Node *iterator_tail;<br>
-  Chain_Node       *iterator_node;<br>
-<br>
-  next_watchdog->delta_interval = delta_next - delta;<br>
-<br>
-  iterator_node = _Chain_First( &header->Iterators );<br>
-  iterator_tail = _Chain_Immutable_tail( &header->Iterators );<br>
-<br>
-  while ( iterator_node != iterator_tail ) {<br>
-    Watchdog_Iterator *iterator;<br>
-<br>
-    iterator = (Watchdog_Iterator *) iterator_node;<br>
-<br>
-    if ( iterator->current == &next_watchdog->Node ) {<br>
-      iterator->current = &the_watchdog->Node;<br>
-    }<br>
-<br>
-    iterator_node = _Chain_Next( iterator_node );<br>
-  }<br>
-}<br>
-<br>
-void _Watchdog_Insert_locked(<br>
+void _Watchdog_Insert(<br>
   Watchdog_Header  *header,<br>
   Watchdog_Control *the_watchdog,<br>
-  ISR_lock_Context *lock_context<br>
+  uint64_t          expire<br>
 )<br>
 {<br>
-  if ( the_watchdog->state == WATCHDOG_INACTIVE ) {<br>
-    Watchdog_Iterator  iterator;<br>
-    Chain_Node        *current;<br>
-    Chain_Node        *next;<br>
-    Watchdog_Interval  delta;<br>
-<br>
-    the_watchdog->state = WATCHDOG_BEING_INSERTED;<br>
-<br>
-    _Chain_Append_unprotected( &header->Iterators, &iterator.Node );<br>
-<br>
-    delta = the_watchdog->initial;<br>
-    current = _Chain_Head( &header->Watchdogs );<br>
+  RBTree_Node **link;<br>
+  RBTree_Node  *parent;<br>
+  RBTree_Node  *old_first;<br>
+  RBTree_Node  *new_first;<br>
<br>
-    while (<br>
-      ( next = _Chain_Next( current ) ) != _Chain_Tail( &header->Watchdogs )<br>
-    ) {<br>
-      Watchdog_Control  *next_watchdog;<br>
-      Watchdog_Interval  delta_next;<br>
+  _Assert( _Watchdog_Get_state( the_watchdog ) == WATCHDOG_INACTIVE );<br>
<br>
-      next_watchdog = (Watchdog_Control *) next;<br>
-      delta_next = next_watchdog->delta_interval;<br>
+  link = _RBTree_Root_reference( &header->Watchdogs );<br>
+  parent = NULL;<br>
+  old_first = header->first;<br>
+  new_first = &the_watchdog->Node.RBTree;<br>
<br>
-      if ( delta < delta_next ) {<br>
-        _Watchdog_Insert_fixup(<br>
-          header,<br>
-          the_watchdog,<br>
-          delta,<br>
-          next_watchdog,<br>
-          delta_next<br>
-        );<br>
-        break;<br>
-      }<br>
+  the_watchdog->expire = expire;<br>
<br>
-      iterator.delta_interval = delta - delta_next;<br>
-      iterator.current = next;<br>
+  while ( *link != NULL ) {<br>
+    Watchdog_Control *parent_watchdog;<br>
<br>
-      _Watchdog_Flash( header, lock_context );<br>
+    parent = *link;<br>
+    parent_watchdog = (Watchdog_Control *) parent;<br>
<br>
-      if ( the_watchdog->state != WATCHDOG_BEING_INSERTED ) {<br>
-        goto abort_insert;<br>
-      }<br>
-<br>
-      delta = iterator.delta_interval;<br>
-      current = iterator.current;<br>
+    if ( expire < parent_watchdog->expire ) {<br>
+      link = _RBTree_Left_reference( parent );<br>
+    } else {<br>
+      link = _RBTree_Right_reference( parent );<br>
+      new_first = old_first;<br>
     }<br>
-<br>
-    the_watchdog->delta_interval = delta;<br>
-    the_watchdog->start_time = _Watchdog_Ticks_since_boot;<br>
-    _Watchdog_Activate( the_watchdog );<br>
-    _Chain_Insert_unprotected( current, &the_watchdog->Node );<br>
-<br>
-abort_insert:<br>
-<br>
-    _Chain_Extract_unprotected( &iterator.Node );<br>
   }<br>
-}<br>
-<br>
-void _Watchdog_Insert(<br>
-  Watchdog_Header  *header,<br>
-  Watchdog_Control *the_watchdog<br>
-)<br>
-{<br>
-  ISR_lock_Context lock_context;<br>
<br>
-  _Watchdog_Acquire( header, &lock_context );<br>
-  _Watchdog_Insert_locked( header, the_watchdog, &lock_context );<br>
-  _Watchdog_Release( header, &lock_context );<br>
+  header->first = new_first;<br>
+  _RBTree_Add_child( &the_watchdog->Node.RBTree, parent, link );<br>
+  _RBTree_Insert_color( &header->Watchdogs, &the_watchdog->Node.RBTree );<br>
 }<br>
diff --git a/cpukit/score/src/watchdogremove.c b/cpukit/score/src/watchdogremove.c<br>
index 2aa72a4..2605a67 100644<br>
--- a/cpukit/score/src/watchdogremove.c<br>
+++ b/cpukit/score/src/watchdogremove.c<br>
@@ -1,17 +1,22 @@<br>
 /**<br>
  * @file<br>
  *<br>
- * @brief Remove Watchdog from List<br>
+ * @brief Remove Watchdog<br>
  * @ingroup ScoreWatchdog<br>
  */<br>
<br>
 /*<br>
- *  COPYRIGHT (c) 1989-1999.<br>
- *  On-Line Applications Research Corporation (OAR).<br>
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.<br>
  *<br>
- *  The license and distribution terms for this file may be<br>
- *  found in the file LICENSE in this distribution or at<br>
- *  <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
+ *  embedded brains GmbH<br>
+ *  Dornierstr. 4<br>
+ *  82178 Puchheim<br>
+ *  Germany<br>
+ *  <<a href="mailto:rtems@embedded-brains.de">rtems@embedded-brains.de</a>><br>
+ *<br>
+ * The license and distribution terms for this file may be<br>
+ * found in the file LICENSE in this distribution or at<br>
+ * <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
  */<br>
<br>
 #if HAVE_CONFIG_H<br>
@@ -19,161 +24,18 @@<br>
 #endif<br>
<br>
 #include <rtems/score/watchdogimpl.h><br>
-#include <rtems/score/assert.h><br>
-<br>
-static void _Watchdog_Remove_it(<br>
-  Watchdog_Header   *header,<br>
-  Watchdog_Control  *the_watchdog<br>
-)<br>
-{<br>
-  Chain_Node        *next;<br>
-  Watchdog_Interval  delta;<br>
-  const Chain_Node  *iterator_tail;<br>
-  Chain_Node        *iterator_node;<br>
-<br>
-  _Assert( the_watchdog->state == WATCHDOG_ACTIVE );<br>
-<br>
-  the_watchdog->state = WATCHDOG_INACTIVE;<br>
-  the_watchdog->stop_time = _Watchdog_Ticks_since_boot;<br>
-<br>
-  next = _Chain_Next( &the_watchdog->Node );<br>
-  delta = the_watchdog->delta_interval;<br>
-<br>
-  if ( next != _Chain_Tail( &header->Watchdogs ) ) {<br>
-    Watchdog_Control *next_watchdog;<br>
-<br>
-    next_watchdog = (Watchdog_Control *) next;<br>
-    next_watchdog->delta_interval += delta;<br>
-  }<br>
-<br>
-  _Chain_Extract_unprotected( &the_watchdog->Node );<br>
-<br>
-  iterator_node = _Chain_First( &header->Iterators );<br>
-  iterator_tail = _Chain_Immutable_tail( &header->Iterators );<br>
-<br>
-  while ( iterator_node != iterator_tail ) {<br>
-    Watchdog_Iterator *iterator;<br>
-<br>
-    iterator = (Watchdog_Iterator *) iterator_node;<br>
-<br>
-    if ( iterator->current == next ) {<br>
-      iterator->delta_interval += delta;<br>
-    }<br>
-<br>
-    if ( iterator->current == &the_watchdog->Node ) {<br>
-      Chain_Node *previous = _Chain_Previous( &the_watchdog->Node );<br>
-<br>
-      iterator->current = previous;<br>
-<br>
-      if ( previous != _Chain_Head( &header->Watchdogs ) ) {<br>
-        Watchdog_Control *previous_watchdog;<br>
-<br>
-        previous_watchdog = (Watchdog_Control *) previous;<br>
-        iterator->delta_interval += previous_watchdog->delta_interval;<br>
-      }<br>
-    }<br>
-<br>
-    iterator_node = _Chain_Next( iterator_node );<br>
-  }<br>
-}<br>
<br>
-Watchdog_States _Watchdog_Remove(<br>
+void _Watchdog_Remove(<br>
   Watchdog_Header  *header,<br>
   Watchdog_Control *the_watchdog<br>
 )<br>
 {<br>
-  ISR_lock_Context  lock_context;<br>
-  Watchdog_States   previous_state;<br>
-  Watchdog_Interval now;<br>
-<br>
-  _Watchdog_Acquire( header, &lock_context );<br>
-  previous_state = the_watchdog->state;<br>
-  switch ( previous_state ) {<br>
-    case WATCHDOG_INACTIVE:<br>
-      break;<br>
-<br>
-    case WATCHDOG_BEING_INSERTED:<br>
-<br>
-      /*<br>
-       *  It is not actually on the chain so just change the state and<br>
-       *  the Insert operation we interrupted will be aborted.<br>
-       */<br>
-      the_watchdog->state = WATCHDOG_INACTIVE;<br>
-      now = _Watchdog_Ticks_since_boot;<br>
-      the_watchdog->start_time = now;<br>
-      the_watchdog->stop_time = now;<br>
-      break;<br>
-<br>
-    case WATCHDOG_ACTIVE:<br>
-      _Watchdog_Remove_it( header, the_watchdog );<br>
-      break;<br>
-  }<br>
-<br>
-  _Watchdog_Release( header, &lock_context );<br>
-  return( previous_state );<br>
-}<br>
-<br>
-void _Watchdog_Tickle(<br>
-  Watchdog_Header *header<br>
-)<br>
-{<br>
-  ISR_lock_Context lock_context;<br>
-<br>
-  _Watchdog_Acquire( header, &lock_context );<br>
-<br>
-  if ( !_Watchdog_Is_empty( header ) ) {<br>
-    Watchdog_Control  *first;<br>
-    Watchdog_Interval  delta;<br>
-<br>
-    first = _Watchdog_First( header );<br>
-    delta = first->delta_interval;<br>
-<br>
-    /*<br>
-     * Although it is forbidden to insert watchdogs with a delta interval of<br>
-     * zero it is possible to observe watchdogs with a delta interval of zero<br>
-     * at this point.  For example lets have a watchdog chain of one watchdog<br>
-     * with a delta interval of one and insert a new one with an initial value<br>
-     * of one.  At the start of the insert procedure it will advance one step<br>
-     * and reduce its delta interval by one yielding zero.  Now a tick happens.<br>
-     * This will remove the watchdog on the chain and update the insert<br>
-     * iterator.  Now the insert operation continues and will insert the new<br>
-     * watchdog with a delta interval of zero.<br>
-     */<br>
-    if ( delta > 0 ) {<br>
-      --delta;<br>
-      first->delta_interval = delta;<br>
+  if ( _Watchdog_Is_scheduled( the_watchdog ) ) {<br>
+    if ( header->first == &the_watchdog->Node.RBTree ) {<br>
+      _Watchdog_Next_first( header, the_watchdog );<br>
     }<br>
<br>
-    while ( delta == 0 ) {<br>
-      bool                            run;<br>
-      Watchdog_Service_routine_entry  routine;<br>
-      Objects_Id                      id;<br>
-      void                           *user_data;<br>
-<br>
-      run = ( first->state == WATCHDOG_ACTIVE );<br>
-<br>
-      _Watchdog_Remove_it( header, first );<br>
-<br>
-      routine = first->routine;<br>
-      id = first->id;<br>
-      user_data = first->user_data;<br>
-<br>
-      _Watchdog_Release( header, &lock_context );<br>
-<br>
-      if ( run ) {<br>
-        (*routine)( id, user_data );<br>
-      }<br>
-<br>
-      _Watchdog_Acquire( header, &lock_context );<br>
-<br>
-      if ( _Watchdog_Is_empty( header ) ) {<br>
-        break;<br>
-      }<br>
-<br>
-      first = _Watchdog_First( header );<br>
-      delta = first->delta_interval;<br>
-    }<br>
+    _RBTree_Extract( &header->Watchdogs, &the_watchdog->Node.RBTree );<br>
+    _Watchdog_Set_state( the_watchdog, WATCHDOG_INACTIVE );<br>
   }<br>
-<br>
-  _Watchdog_Release( header, &lock_context );<br>
 }<br>
diff --git a/cpukit/score/src/watchdogtick.c b/cpukit/score/src/watchdogtick.c<br>
index e89c088..ab7eadc 100644<br>
--- a/cpukit/score/src/watchdogtick.c<br>
+++ b/cpukit/score/src/watchdogtick.c<br>
@@ -1,5 +1,5 @@<br>
 /*<br>
- * Copyright (c) 2015 embedded brains GmbH.  All rights reserved.<br>
+ * Copyright (c) 2015, 2016 embedded brains GmbH.  All rights reserved.<br>
  *<br>
  *  embedded brains GmbH<br>
  *  Dornierstr. 4<br>
@@ -12,25 +12,81 @@<br>
  * <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
  */<br>
<br>
-#include <rtems/score/assert.h><br>
+#if HAVE_CONFIG_H<br>
+#include "config.h"<br>
+#endif<br>
+<br>
+#include <rtems/score/watchdogimpl.h><br>
 #include <rtems/score/schedulerimpl.h><br>
 #include <rtems/score/threaddispatch.h><br>
-#include <rtems/score/todimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
+#include <rtems/score/timecounter.h><br>
<br>
-#if HAVE_CONFIG_H<br>
-#include "config.h"<br>
+void _Watchdog_Do_tickle(<br>
+  Watchdog_Header  *header,<br>
+  uint64_t          now,<br>
+#ifdef RTEMS_SMP<br>
+  ISR_lock_Control *lock,<br>
 #endif<br>
+  ISR_lock_Context *lock_context<br>
+)<br>
+{<br>
+  while ( true ) {<br>
+    Watchdog_Control *the_watchdog;<br>
+<br>
+    the_watchdog = (Watchdog_Control *) header->first;<br>
+<br>
+    if ( the_watchdog == NULL ) {<br>
+      break;<br>
+    }<br>
+<br>
+    if ( the_watchdog->expire <= now ) {<br>
+      Watchdog_Service_routine_entry routine;<br>
+<br>
+      _Watchdog_Next_first( header, the_watchdog );<br>
+      _RBTree_Extract( &header->Watchdogs, &the_watchdog->Node.RBTree );<br>
+      _Watchdog_Set_state( the_watchdog, WATCHDOG_INACTIVE );<br>
+      routine = the_watchdog->routine;<br>
+<br>
+      _ISR_lock_Release_and_ISR_enable( lock, lock_context );<br>
+      ( *routine )( the_watchdog );<br>
+      _ISR_lock_ISR_disable_and_acquire( lock, lock_context );<br>
+    } else {<br>
+      break;<br>
+    }<br>
+  }<br>
+<br>
+  _ISR_lock_Release_and_ISR_enable( lock, lock_context );<br>
+}<br>
<br>
 void _Watchdog_Tick( Per_CPU_Control *cpu )<br>
 {<br>
-  _Assert( !_Thread_Dispatch_is_enabled() );<br>
+  ISR_lock_Context lock_context;<br>
+  uint64_t         ticks;<br>
+  struct timespec  now;<br>
<br>
   if ( _Per_CPU_Is_boot_processor( cpu ) ) {<br>
-    _TOD_Tickle_ticks();<br>
+    ++_Watchdog_Ticks_since_boot;<br>
+  }<br>
<br>
-    _Watchdog_Tickle_ticks();<br>
+  _ISR_lock_ISR_disable_and_acquire( &cpu->Watchdog.Lock, &lock_context );<br>
<br>
-    _Scheduler_Tick();<br>
-  }<br>
+  ticks = cpu->Watchdog.ticks;<br>
+  _Assert( ticks < UINT64_MAX );<br>
+  ++ticks;<br>
+  cpu->Watchdog.ticks = ticks;<br>
+<br>
+  _Watchdog_Tickle(<br>
+    &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],<br>
+    ticks,<br>
+    &cpu->Watchdog.Lock,<br>
+    &lock_context<br>
+  );<br>
+<br>
+  _Timecounter_Getnanotime( &now );<br>
+  _Watchdog_Per_CPU_tickle_absolute(<br>
+    cpu,<br>
+    _Watchdog_Ticks_from_timespec( &now )<br>
+  );<br>
+<br>
+  _Scheduler_Tick( cpu );<br>
 }<br>
diff --git a/testsuites/smptests/Makefile.am b/testsuites/smptests/Makefile.am<br>
index 92f4528..610f313 100644<br>
--- a/testsuites/smptests/Makefile.am<br>
+++ b/testsuites/smptests/Makefile.am<br>
@@ -14,6 +14,7 @@ SUBDIRS += smpatomic01<br>
 SUBDIRS += smpcache01<br>
 SUBDIRS += smpcapture01<br>
 SUBDIRS += smpcapture02<br>
+SUBDIRS += smpclock01<br>
 SUBDIRS += smpfatal01<br>
 SUBDIRS += smpfatal02<br>
 SUBDIRS += smpfatal03<br>
diff --git a/testsuites/smptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a> b/testsuites/smptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
index 27e8f9c..a89b796 100644<br>
--- a/testsuites/smptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
+++ b/testsuites/smptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
@@ -69,6 +69,7 @@ smpatomic01/Makefile<br>
 smpcache01/Makefile<br>
 smpcapture01/Makefile<br>
 smpcapture02/Makefile<br>
+smpclock01/Makefile<br>
 smpfatal01/Makefile<br>
 smpfatal02/Makefile<br>
 smpfatal03/Makefile<br>
diff --git a/testsuites/smptests/smpclock01/Makefile.am b/testsuites/smptests/smpclock01/Makefile.am<br>
new file mode 100644<br>
index 0000000..49e274b<br>
--- /dev/null<br>
+++ b/testsuites/smptests/smpclock01/Makefile.am<br>
@@ -0,0 +1,20 @@<br>
+rtems_tests_PROGRAMS = smpclock01<br>
+smpclock01_SOURCES = init.c<br>
+smpclock01_SOURCES += ../../support/src/spin.c<br>
+<br>
+dist_rtems_tests_DATA = smpclock01.scn smpclock01.doc<br>
+<br>
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg<br>
+include $(top_srcdir)/../automake/<a href="http://compile.am" rel="noreferrer" target="_blank">compile.am</a><br>
+include $(top_srcdir)/../automake/<a href="http://leaf.am" rel="noreferrer" target="_blank">leaf.am</a><br>
+<br>
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include<br>
+<br>
+LINK_OBJS = $(smpclock01_OBJECTS)<br>
+LINK_LIBS = $(smpclock01_LDLIBS)<br>
+<br>
+smpclock01$(EXEEXT): $(smpclock01_OBJECTS) $(smpclock01_DEPENDENCIES)<br>
+       @rm -f smpclock01$(EXEEXT)<br>
+       $(make-exe)<br>
+<br>
+include $(top_srcdir)/../automake/<a href="http://local.am" rel="noreferrer" target="_blank">local.am</a><br>
diff --git a/testsuites/smptests/smpclock01/init.c b/testsuites/smptests/smpclock01/init.c<br>
new file mode 100644<br>
index 0000000..36016ef<br>
--- /dev/null<br>
+++ b/testsuites/smptests/smpclock01/init.c<br>
@@ -0,0 +1,206 @@<br>
+/*<br>
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.<br>
+ *<br>
+ *  embedded brains GmbH<br>
+ *  Dornierstr. 4<br>
+ *  82178 Puchheim<br>
+ *  Germany<br>
+ *  <<a href="mailto:rtems@embedded-brains.de">rtems@embedded-brains.de</a>><br>
+ *<br>
+ * The license and distribution terms for this file may be<br>
+ * found in the file LICENSE in this distribution or at<br>
+ * <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
+ */<br>
+<br>
+#ifdef HAVE_CONFIG_H<br>
+  #include "config.h"<br>
+#endif<br>
+<br>
+#include "tmacros.h"<br>
+<br>
+#include <rtems.h><br>
+#include <rtems/libcsupport.h><br>
+#include <rtems/score/percpu.h><br>
+#include <rtems/score/smpbarrier.h><br>
+<br>
+#include <test_support.h><br>
+<br>
+#define CPU_COUNT 2<br>
+<br>
+#define SCHEDULER_A rtems_build_name(' ', ' ', ' ', 'A')<br>
+<br>
+#define SCHEDULER_B rtems_build_name(' ', ' ', ' ', 'B')<br>
+<br>
+const char rtems_test_name[] = "SMPCLOCK 1";<br>
+<br>
+typedef struct {<br>
+  SMP_barrier_Control barrier;<br>
+  SMP_barrier_State delay_barrier_state;<br>
+  SMP_barrier_State timer_barrier_state;<br>
+} test_context;<br>
+<br>
+static test_context test_instance = {<br>
+  .barrier = SMP_BARRIER_CONTROL_INITIALIZER,<br>
+  .delay_barrier_state = SMP_BARRIER_STATE_INITIALIZER,<br>
+  .timer_barrier_state = SMP_BARRIER_STATE_INITIALIZER<br>
+};<br>
+<br>
+static void wait(test_context *ctx, SMP_barrier_State *bs)<br>
+{<br>
+  _SMP_barrier_Wait(&ctx->barrier, bs, CPU_COUNT);<br>
+}<br>
+<br>
+static void timer_isr(rtems_id id, void *arg)<br>
+{<br>
+  test_context *ctx = arg;<br>
+<br>
+  /* (B) */<br>
+  wait(ctx, &ctx->timer_barrier_state);<br>
+}<br>
+<br>
+static void timer_task(rtems_task_argument arg)<br>
+{<br>
+  test_context *ctx = (test_context *) arg;<br>
+  rtems_status_code sc;<br>
+  rtems_id timer_id;<br>
+<br>
+  rtems_test_assert(rtems_get_current_processor() == 1);<br>
+<br>
+  sc = rtems_timer_create(SCHEDULER_B, &timer_id);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  /* (A) */<br>
+  wait(ctx, &ctx->timer_barrier_state);<br>
+<br>
+  sc = rtems_timer_fire_after(timer_id, 1, timer_isr, ctx);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_task_wake_after(1);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_timer_delete(timer_id);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  /* (C) */<br>
+  wait(ctx, &ctx->timer_barrier_state);<br>
+<br>
+  while (true) {<br>
+    /* Wait for deletion */<br>
+  }<br>
+}<br>
+<br>
+static void delay_clock_tick(test_context *ctx)<br>
+{<br>
+  rtems_interrupt_level level;<br>
+  const Per_CPU_Control *cpu_self = _Per_CPU_Get_by_index(0);<br>
+  const Per_CPU_Control *cpu_other = _Per_CPU_Get_by_index(1);<br>
+  uint64_t ticks;<br>
+<br>
+  rtems_test_assert(rtems_get_current_processor() == 0);<br>
+<br>
+  rtems_test_spin_until_next_tick();<br>
+  ticks = cpu_self->Watchdog.ticks;<br>
+<br>
+  rtems_interrupt_local_disable(level);<br>
+<br>
+  /* (A) */<br>
+  wait(ctx, &ctx->delay_barrier_state);<br>
+<br>
+  /* (B) */<br>
+  wait(ctx, &ctx->delay_barrier_state);<br>
+<br>
+  rtems_test_assert(cpu_self->Watchdog.ticks == ticks);<br>
+  rtems_test_assert(cpu_other->Watchdog.ticks == ticks + 1);<br>
+<br>
+  rtems_interrupt_local_enable(level);<br>
+<br>
+  rtems_test_assert(cpu_self->Watchdog.ticks == ticks + 1);<br>
+  rtems_test_assert(cpu_other->Watchdog.ticks == ticks + 1);<br>
+<br>
+  /* (C) */<br>
+  wait(ctx, &ctx->delay_barrier_state);<br>
+}<br>
+<br>
+static void test(void)<br>
+{<br>
+  test_context *ctx = &test_instance;<br>
+  rtems_status_code sc;<br>
+  rtems_id scheduler_b_id;<br>
+  rtems_id task_id;<br>
+<br>
+  sc = rtems_scheduler_ident(SCHEDULER_B, &scheduler_b_id);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_task_create(<br>
+    SCHEDULER_B,<br>
+    1,<br>
+    RTEMS_MINIMUM_STACK_SIZE,<br>
+    RTEMS_DEFAULT_MODES,<br>
+    RTEMS_DEFAULT_ATTRIBUTES,<br>
+    &task_id<br>
+  );<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_task_set_scheduler(task_id, scheduler_b_id);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_task_start(task_id, timer_task, (rtems_task_argument) ctx);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  delay_clock_tick(ctx);<br>
+<br>
+  sc = rtems_task_delete(task_id);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+}<br>
+<br>
+static void Init(rtems_task_argument arg)<br>
+{<br>
+  rtems_resource_snapshot snapshot;<br>
+<br>
+  TEST_BEGIN();<br>
+<br>
+  rtems_resource_snapshot_take(&snapshot);<br>
+<br>
+  if (rtems_get_processor_count() == CPU_COUNT) {<br>
+    test();<br>
+  }<br>
+<br>
+  rtems_test_assert(rtems_resource_snapshot_check(&snapshot));<br>
+<br>
+  TEST_END();<br>
+  rtems_test_exit(0);<br>
+}<br>
+<br>
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER<br>
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER<br>
+<br>
+#define CONFIGURE_SMP_APPLICATION<br>
+<br>
+#define CONFIGURE_SMP_MAXIMUM_PROCESSORS CPU_COUNT<br>
+<br>
+#define CONFIGURE_SCHEDULER_SIMPLE_SMP<br>
+<br>
+#include <rtems/scheduler.h><br>
+<br>
+RTEMS_SCHEDULER_CONTEXT_SIMPLE_SMP(a);<br>
+RTEMS_SCHEDULER_CONTEXT_SIMPLE_SMP(b);<br>
+<br>
+#define CONFIGURE_SCHEDULER_CONTROLS \<br>
+  RTEMS_SCHEDULER_CONTROL_SIMPLE_SMP(a, SCHEDULER_A), \<br>
+  RTEMS_SCHEDULER_CONTROL_SIMPLE_SMP(b, SCHEDULER_B)<br>
+<br>
+#define CONFIGURE_SMP_SCHEDULER_ASSIGNMENTS \<br>
+  RTEMS_SCHEDULER_ASSIGN(0, RTEMS_SCHEDULER_ASSIGN_PROCESSOR_MANDATORY), \<br>
+  RTEMS_SCHEDULER_ASSIGN(1, RTEMS_SCHEDULER_ASSIGN_PROCESSOR_OPTIONAL)<br>
+<br>
+#define CONFIGURE_MAXIMUM_TASKS CPU_COUNT<br>
+<br>
+#define CONFIGURE_MAXIMUM_TIMERS 1<br>
+<br>
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION<br>
+<br>
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE<br>
+<br>
+#define CONFIGURE_INIT<br>
+<br>
+#include <rtems/confdefs.h><br>
diff --git a/testsuites/smptests/smpclock01/smpclock01.doc b/testsuites/smptests/smpclock01/smpclock01.doc<br>
new file mode 100644<br>
index 0000000..130644a<br>
--- /dev/null<br>
+++ b/testsuites/smptests/smpclock01/smpclock01.doc<br>
@@ -0,0 +1,11 @@<br>
+This file describes the directives and concepts tested by this test set.<br>
+<br>
+test set name: smpclock01<br>
+<br>
+directives:<br>
+<br>
+  - Clock driver interrupt<br>
+<br>
+concepts:<br>
+<br>
+  - Ensures that the clock interrupt is distributed to all online processors.<br>
diff --git a/testsuites/smptests/smpclock01/smpclock01.scn b/testsuites/smptests/smpclock01/smpclock01.scn<br>
new file mode 100644<br>
index 0000000..192ed83<br>
--- /dev/null<br>
+++ b/testsuites/smptests/smpclock01/smpclock01.scn<br>
@@ -0,0 +1,2 @@<br>
+*** BEGIN OF TEST SMPCLOCK 1 ***<br>
+*** END OF TEST SMPCLOCK 1 ***<br>
diff --git a/testsuites/smptests/smpwakeafter01/smpwakeafter01.scn b/testsuites/smptests/smpwakeafter01/smpwakeafter01.scn<br>
index 9bbb558..7fa203d 100644<br>
--- a/testsuites/smptests/smpwakeafter01/smpwakeafter01.scn<br>
+++ b/testsuites/smptests/smpwakeafter01/smpwakeafter01.scn<br>
@@ -9,36 +9,196 @@<br>
 3 seconds remaining<br>
 2 seconds remaining<br>
 1 seconds remaining<br>
-counts[0][0] = 15479<br>
-counts[0][1] = 17039<br>
-counts[0][2] = 12389<br>
-counts[0][3] = 8077<br>
-counts[0][4] = 3<br>
-counts[0][5] = 2431<br>
-counts[0][6] = 2630<br>
-counts[0][7] = 2128<br>
-counts[1][0] = 15461<br>
-counts[1][1] = 16813<br>
-counts[1][2] = 12248<br>
-counts[1][3] = 7483<br>
-counts[1][4] = 5499<br>
-counts[1][5] = 3170<br>
-counts[1][6] = 2549<br>
-counts[1][7] = 1748<br>
-counts[2][0] = 71<br>
-counts[2][1] = 17068<br>
-counts[2][2] = 7661<br>
-counts[2][3] = 8190<br>
-counts[2][4] = 5513<br>
-counts[2][5] = 3864<br>
-counts[2][6] = 1454<br>
-counts[2][7] = 1993<br>
-counts[3][0] = 14511<br>
-counts[3][1] = 16115<br>
-counts[3][2] = 12561<br>
-counts[3][3] = 7281<br>
-counts[3][4] = 5507<br>
-counts[3][5] = 3828<br>
-counts[3][6] = 2687<br>
-counts[3][7] = 1278<br>
+counts[0][0] = 10013<br>
+counts[0][1] = 5007<br>
+counts[0][2] = 3339<br>
+counts[0][3] = 2004<br>
+counts[0][4] = 1432<br>
+counts[0][5] = 912<br>
+counts[0][6] = 771<br>
+counts[0][7] = 590<br>
+counts[1][0] = 10027<br>
+counts[1][1] = 5015<br>
+counts[1][2] = 3344<br>
+counts[1][3] = 2007<br>
+counts[1][4] = 1434<br>
+counts[1][5] = 913<br>
+counts[1][6] = 773<br>
+counts[1][7] = 591<br>
+counts[2][0] = 10041<br>
+counts[2][1] = 5022<br>
+counts[2][2] = 3349<br>
+counts[2][3] = 2010<br>
+counts[2][4] = 1436<br>
+counts[2][5] = 914<br>
+counts[2][6] = 774<br>
+counts[2][7] = 592<br>
+counts[3][0] = 10055<br>
+counts[3][1] = 5029<br>
+counts[3][2] = 3353<br>
+counts[3][3] = 2013<br>
+counts[3][4] = 1438<br>
+counts[3][5] = 915<br>
+counts[3][6] = 775<br>
+counts[3][7] = 593<br>
+counts[4][0] = 10070<br>
+counts[4][1] = 5036<br>
+counts[4][2] = 3358<br>
+counts[4][3] = 2015<br>
+counts[4][4] = 1440<br>
+counts[4][5] = 917<br>
+counts[4][6] = 776<br>
+counts[4][7] = 594<br>
+counts[5][0] = 10084<br>
+counts[5][1] = 5043<br>
+counts[5][2] = 3363<br>
+counts[5][3] = 2018<br>
+counts[5][4] = 1442<br>
+counts[5][5] = 918<br>
+counts[5][6] = 777<br>
+counts[5][7] = 594<br>
+counts[6][0] = 10098<br>
+counts[6][1] = 5050<br>
+counts[6][2] = 3368<br>
+counts[6][3] = 2021<br>
+counts[6][4] = 1444<br>
+counts[6][5] = 919<br>
+counts[6][6] = 778<br>
+counts[6][7] = 595<br>
+counts[7][0] = 10113<br>
+counts[7][1] = 5058<br>
+counts[7][2] = 3373<br>
+counts[7][3] = 2024<br>
+counts[7][4] = 1446<br>
+counts[7][5] = 921<br>
+counts[7][6] = 779<br>
+counts[7][7] = 596<br>
+counts[8][0] = 10127<br>
+counts[8][1] = 5065<br>
+counts[8][2] = 3377<br>
+counts[8][3] = 2027<br>
+counts[8][4] = 1448<br>
+counts[8][5] = 922<br>
+counts[8][6] = 780<br>
+counts[8][7] = 597<br>
+counts[9][0] = 10142<br>
+counts[9][1] = 5072<br>
+counts[9][2] = 3382<br>
+counts[9][3] = 2030<br>
+counts[9][4] = 1450<br>
+counts[9][5] = 923<br>
+counts[9][6] = 781<br>
+counts[9][7] = 598<br>
+counts[10][0] = 10156<br>
+counts[10][1] = 5079<br>
+counts[10][2] = 3387<br>
+counts[10][3] = 2033<br>
+counts[10][4] = 1452<br>
+counts[10][5] = 925<br>
+counts[10][6] = 783<br>
+counts[10][7] = 599<br>
+counts[11][0] = 10170<br>
+counts[11][1] = 5086<br>
+counts[11][2] = 3392<br>
+counts[11][3] = 2036<br>
+counts[11][4] = 1454<br>
+counts[11][5] = 926<br>
+counts[11][6] = 784<br>
+counts[11][7] = 599<br>
+counts[12][0] = 10185<br>
+counts[12][1] = 5094<br>
+counts[12][2] = 3397<br>
+counts[12][3] = 2039<br>
+counts[12][4] = 1457<br>
+counts[12][5] = 927<br>
+counts[12][6] = 785<br>
+counts[12][7] = 600<br>
+counts[13][0] = 10200<br>
+counts[13][1] = 5101<br>
+counts[13][2] = 3402<br>
+counts[13][3] = 2042<br>
+counts[13][4] = 1459<br>
+counts[13][5] = 929<br>
+counts[13][6] = 786<br>
+counts[13][7] = 601<br>
+counts[14][0] = 10215<br>
+counts[14][1] = 5109<br>
+counts[14][2] = 3407<br>
+counts[14][3] = 2045<br>
+counts[14][4] = 1461<br>
+counts[14][5] = 930<br>
+counts[14][6] = 787<br>
+counts[14][7] = 602<br>
+counts[15][0] = 10230<br>
+counts[15][1] = 5116<br>
+counts[15][2] = 3412<br>
+counts[15][3] = 2048<br>
+counts[15][4] = 1463<br>
+counts[15][5] = 931<br>
+counts[15][6] = 788<br>
+counts[15][7] = 603<br>
+counts[16][0] = 10245<br>
+counts[16][1] = 5124<br>
+counts[16][2] = 3417<br>
+counts[16][3] = 2051<br>
+counts[16][4] = 1465<br>
+counts[16][5] = 933<br>
+counts[16][6] = 789<br>
+counts[16][7] = 604<br>
+counts[17][0] = 10260<br>
+counts[17][1] = 5131<br>
+counts[17][2] = 3422<br>
+counts[17][3] = 2054<br>
+counts[17][4] = 1467<br>
+counts[17][5] = 934<br>
+counts[17][6] = 791<br>
+counts[17][7] = 605<br>
+counts[18][0] = 10275<br>
+counts[18][1] = 5139<br>
+counts[18][2] = 3427<br>
+counts[18][3] = 2057<br>
+counts[18][4] = 1469<br>
+counts[18][5] = 935<br>
+counts[18][6] = 792<br>
+counts[18][7] = 606<br>
+counts[19][0] = 10290<br>
+counts[19][1] = 5146<br>
+counts[19][2] = 3432<br>
+counts[19][3] = 2060<br>
+counts[19][4] = 1472<br>
+counts[19][5] = 937<br>
+counts[19][6] = 793<br>
+counts[19][7] = 607<br>
+counts[20][0] = 10305<br>
+counts[20][1] = 5154<br>
+counts[20][2] = 3437<br>
+counts[20][3] = 2063<br>
+counts[20][4] = 1474<br>
+counts[20][5] = 938<br>
+counts[20][6] = 794<br>
+counts[20][7] = 607<br>
+counts[21][0] = 10320<br>
+counts[21][1] = 5161<br>
+counts[21][2] = 3442<br>
+counts[21][3] = 2066<br>
+counts[21][4] = 1476<br>
+counts[21][5] = 940<br>
+counts[21][6] = 795<br>
+counts[21][7] = 608<br>
+counts[22][0] = 10335<br>
+counts[22][1] = 5169<br>
+counts[22][2] = 3447<br>
+counts[22][3] = 2069<br>
+counts[22][4] = 1478<br>
+counts[22][5] = 941<br>
+counts[22][6] = 796<br>
+counts[22][7] = 609<br>
+counts[23][0] = 10350<br>
+counts[23][1] = 5176<br>
+counts[23][2] = 3452<br>
+counts[23][3] = 2072<br>
+counts[23][4] = 1480<br>
+counts[23][5] = 942<br>
+counts[23][6] = 798<br>
+counts[23][7] = 610<br>
 *** END OF TEST SMPWAKEAFTER 1 ***<br>
diff --git a/testsuites/sptests/Makefile.am b/testsuites/sptests/Makefile.am<br>
index c5210a5..43f3d82 100644<br>
--- a/testsuites/sptests/Makefile.am<br>
+++ b/testsuites/sptests/Makefile.am<br>
@@ -25,7 +25,7 @@ _SUBDIRS = \<br>
     spintrcritical05 spintrcritical06 spintrcritical07 spintrcritical08 \<br>
     spintrcritical09 spintrcritical10 spintrcritical11 spintrcritical12 \<br>
     spintrcritical13 spintrcritical14 spintrcritical15 spintrcritical16 \<br>
-    spintrcritical17 spintrcritical18 spmkdir spmountmgr01 spheapprot \<br>
+    spintrcritical18 spmkdir spmountmgr01 spheapprot \<br>
     sppagesize spsem01 spsem02 spsimplesched01 spsimplesched02 \<br>
     spsimplesched03 spnsext01 spedfsched01 spedfsched02 spedfsched03 \<br>
     spcbssched01 spcbssched02 spcbssched03 spqreslib sptimespec01 \<br>
@@ -77,6 +77,7 @@ _SUBDIRS += speventsystem01<br>
 _SUBDIRS += spinternalerror01<br>
 _SUBDIRS += spinternalerror02<br>
 _SUBDIRS += sptimer_err01 sptimer_err02<br>
+_SUBDIRS += sptimerserver01<br>
 _SUBDIRS += spclock_err02<br>
<br>
 if HAS_CPUSET<br>
diff --git a/testsuites/sptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a> b/testsuites/sptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
index e46f6fa..eeebc91 100644<br>
--- a/testsuites/sptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
+++ b/testsuites/sptests/<a href="http://configure.ac" rel="noreferrer" target="_blank">configure.ac</a><br>
@@ -46,6 +46,7 @@ AM_CONDITIONAL(HAS_SMP,test "$rtems_cv_RTEMS_SMP" = "yes")<br>
<br>
 # Explicitly list all Makefiles here<br>
 AC_CONFIG_FILES([Makefile<br>
+sptimerserver01/Makefile<br>
 spsysinit01/Makefile<br>
 splinkersets01/Makefile<br>
 spstdthreads01/Makefile<br>
@@ -216,7 +217,6 @@ spintrcritical13/Makefile<br>
 spintrcritical14/Makefile<br>
 spintrcritical15/Makefile<br>
 spintrcritical16/Makefile<br>
-spintrcritical17/Makefile<br>
 spheapprot/Makefile<br>
 spmkdir/Makefile<br>
 spmountmgr01/Makefile<br>
diff --git a/testsuites/sptests/sp31/task1.c b/testsuites/sptests/sp31/task1.c<br>
index f4e526a..c3f0ae1 100644<br>
--- a/testsuites/sptests/sp31/task1.c<br>
+++ b/testsuites/sptests/sp31/task1.c<br>
@@ -40,14 +40,6 @@ static rtems_timer_service_routine Do_nothing(<br>
   /* Do nothing */<br>
 }<br>
<br>
-static Watchdog_Interval schedule_time( void )<br>
-{<br>
-  const Watchdog_Control *watchdog =<br>
-    &_Timer_server->Interval_watchdogs.System_watchdog;<br>
-<br>
-  return watchdog->initial + watchdog->start_time;<br>
-}<br>
-<br>
 rtems_task Task_1(<br>
   rtems_task_argument argument<br>
 )<br>
@@ -119,10 +111,6 @@ rtems_task Task_1(<br>
     "Timer 1 scheduled for %" PRIdWatchdog_Interval " ticks since boot\n",<br>
     info.start_time + info.initial<br>
   );<br>
-  printf(<br>
-    "Timer Server scheduled for %" PRIdWatchdog_Interval " ticks since boot\n",<br>
-    schedule_time()<br>
-  );<br>
<br>
   puts( "TA1 - rtems_task_wake_after - 1 second" );<br>
   status = rtems_task_wake_after( 1 * rtems_clock_get_ticks_per_second() );<br>
@@ -139,11 +127,6 @@ rtems_task Task_1(<br>
     "Timer 1 scheduled for %" PRIdWatchdog_Interval " ticks since boot\n",<br>
     info.start_time + info.initial<br>
   );<br>
-  printf(<br>
-    "Timer Server scheduled for %" PRIdWatchdog_Interval " ticks since boot\n",<br>
-    schedule_time()<br>
-  );<br>
-  rtems_test_assert( (info.start_time + info.initial) == schedule_time() );<br>
<br>
   puts( "TA1 - rtems_task_wake_after - 1 second" );<br>
   status = rtems_task_wake_after( 1 * rtems_clock_get_ticks_per_second() );<br>
@@ -160,11 +143,6 @@ rtems_task Task_1(<br>
     "Timer 1 scheduled for %" PRIdWatchdog_Interval " ticks since boot\n",<br>
      info.start_time + info.initial<br>
   );<br>
-  printf(<br>
-    "Timer Server scheduled for %" PRIdWatchdog_Interval " ticks since boot\n",<br>
-     schedule_time()<br>
-  );<br>
-  rtems_test_assert( (info.start_time + info.initial) == schedule_time() );<br>
<br>
   puts( "TA1 - rtems_timer_cancel - timer 1" );<br>
   status = rtems_timer_cancel( tmid );<br>
diff --git a/testsuites/sptests/spintrcritical08/init.c b/testsuites/sptests/spintrcritical08/init.c<br>
index f375cd4..3610e65 100644<br>
--- a/testsuites/sptests/spintrcritical08/init.c<br>
+++ b/testsuites/sptests/spintrcritical08/init.c<br>
@@ -46,23 +46,21 @@ static rtems_timer_service_routine test_release_from_isr(<br>
   void     *arg<br>
 )<br>
 {<br>
-  Watchdog_Header *header = &_Watchdog_Ticks_header;<br>
+  Per_CPU_Control *cpu = _Per_CPU_Get();<br>
+  Watchdog_Header *header = &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ];<br>
+  Watchdog_Control *watchdog = (Watchdog_Control *) header->first;<br>
<br>
-  if ( !_Watchdog_Is_empty( header ) ) {<br>
-    Watchdog_Control *watchdog = _Watchdog_First( header );<br>
+  if (<br>
+    watchdog != NULL<br>
+      && watchdog->expire == cpu->Watchdog.ticks<br>
+      && watchdog->routine == _Rate_monotonic_Timeout<br>
+  ) {<br>
+    _Watchdog_Per_CPU_remove_relative( watchdog );<br>
<br>
-    if (<br>
-      watchdog->delta_interval == 0<br>
-        && watchdog->routine == _Rate_monotonic_Timeout<br>
-    ) {<br>
-      Watchdog_States state = _Watchdog_Remove_ticks( watchdog );<br>
+    (*watchdog->routine)( watchdog );<br>
<br>
-      rtems_test_assert( state == WATCHDOG_ACTIVE );<br>
-      (*watchdog->routine)( watchdog->id, watchdog->user_data );<br>
-<br>
-      if ( getState() == RATE_MONOTONIC_EXPIRED_WHILE_BLOCKING ) {<br>
-        case_hit = true;<br>
-      }<br>
+    if ( getState() == RATE_MONOTONIC_EXPIRED_WHILE_BLOCKING ) {<br>
+      case_hit = true;<br>
     }<br>
   }<br>
 }<br>
diff --git a/testsuites/sptests/spintrcritical09/init.c b/testsuites/sptests/spintrcritical09/init.c<br>
index cc119e8..44eccc7 100644<br>
--- a/testsuites/sptests/spintrcritical09/init.c<br>
+++ b/testsuites/sptests/spintrcritical09/init.c<br>
@@ -15,6 +15,7 @@<br>
 #include <intrcritical.h><br>
<br>
 #include <rtems/score/threadimpl.h><br>
+#include <rtems/score/threadimpl.h><br>
 #include <rtems/score/watchdogimpl.h><br>
<br>
 const char rtems_test_name[] = "SPINTRCRITICAL 9";<br>
@@ -37,23 +38,21 @@ static rtems_timer_service_routine test_release_from_isr(<br>
   void     *arg<br>
 )<br>
 {<br>
-  Watchdog_Header *header = &_Watchdog_Ticks_header;<br>
-<br>
-  if ( !_Watchdog_Is_empty( header ) ) {<br>
-    Watchdog_Control *watchdog = _Watchdog_First( header );<br>
+  Per_CPU_Control *cpu_self = _Per_CPU_Get();<br>
+  Watchdog_Header *header = &cpu_self->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ];<br>
+  Watchdog_Control *watchdog = (Watchdog_Control *) header->first;<br>
<br>
-    if (<br>
-      watchdog->delta_interval == 0<br>
-        && watchdog->routine == _Thread_Timeout<br>
-    ) {<br>
-      Watchdog_States state = _Watchdog_Remove_ticks( watchdog );<br>
+  if (<br>
+    watchdog != NULL<br>
+      && watchdog->expire == cpu_self->Watchdog.ticks<br>
+      && watchdog->routine == _Thread_Timeout<br>
+  ) {<br>
+    _Watchdog_Per_CPU_remove( watchdog, cpu_self, header );<br>
<br>
-      rtems_test_assert( state == WATCHDOG_ACTIVE );<br>
-      (*watchdog->routine)( watchdog->id, watchdog->user_data );<br>
+    (*watchdog->routine)( watchdog );<br>
<br>
-      if ( is_interrupt_timeout() ) {<br>
-        case_hit = true;<br>
-      }<br>
+    if ( is_interrupt_timeout() ) {<br>
+      case_hit = true;<br>
     }<br>
   }<br>
 }<br>
diff --git a/testsuites/sptests/spintrcritical10/init.c b/testsuites/sptests/spintrcritical10/init.c<br>
index e4a2a94..25be23a 100644<br>
--- a/testsuites/sptests/spintrcritical10/init.c<br>
+++ b/testsuites/sptests/spintrcritical10/init.c<br>
@@ -78,7 +78,7 @@ static void any_satisfy_before_timeout(rtems_id timer, void *arg)<br>
     );<br>
     rtems_test_assert(thread->Wait.return_code == RTEMS_SUCCESSFUL);<br>
<br>
-    _Thread_Timeout(0, thread);<br>
+    _Thread_Timeout(&thread->Timer.Watchdog);<br>
<br>
     rtems_test_assert(<br>
       *(rtems_event_set *) thread->Wait.return_argument == GREEN<br>
@@ -175,7 +175,7 @@ static void all_satisfy_before_timeout(rtems_id timer, void *arg)<br>
     );<br>
     rtems_test_assert(thread->Wait.return_code == RTEMS_SUCCESSFUL);<br>
<br>
-    _Thread_Timeout(0, thread);<br>
+    _Thread_Timeout(&thread->Timer.Watchdog);<br>
<br>
     rtems_test_assert(<br>
       *(rtems_event_set *) thread->Wait.return_argument == EVENTS<br>
@@ -251,7 +251,7 @@ static void timeout_before_satisfied(rtems_id timer, void *arg)<br>
     );<br>
     rtems_test_assert(thread->Wait.return_code == RTEMS_SUCCESSFUL);<br>
<br>
-    _Thread_Timeout(0, thread);<br>
+    _Thread_Timeout(&thread->Timer.Watchdog);<br>
<br>
     rtems_test_assert(<br>
       *(rtems_event_set *) thread->Wait.return_argument == DEADBEEF<br>
diff --git a/testsuites/sptests/spintrcritical16/init.c b/testsuites/sptests/spintrcritical16/init.c<br>
index a094b41..3657c06 100644<br>
--- a/testsuites/sptests/spintrcritical16/init.c<br>
+++ b/testsuites/sptests/spintrcritical16/init.c<br>
@@ -43,7 +43,7 @@ static rtems_timer_service_routine test_release_from_isr(<br>
   }<br>
<br>
   if ( Main_TCB->Wait.queue != NULL ) {<br>
-    _Thread_Timeout( 0, Main_TCB );<br>
+    _Thread_Timeout( &Main_TCB->Timer.Watchdog );<br>
   }<br>
 }<br>
<br>
diff --git a/testsuites/sptests/spintrcritical17/Makefile.am b/testsuites/sptests/spintrcritical17/Makefile.am<br>
deleted file mode 100644<br>
index 20b372c..0000000<br>
--- a/testsuites/sptests/spintrcritical17/Makefile.am<br>
+++ /dev/null<br>
@@ -1,25 +0,0 @@<br>
-<br>
-rtems_tests_PROGRAMS = spintrcritical17<br>
-spintrcritical17_SOURCES = init.c \<br>
-    ../spintrcritical_support/intrcritical.c<br>
-spintrcritical17_SOURCES += ../spintrcritical_support/intrcritical.h<br>
-<br>
-dist_rtems_tests_DATA = spintrcritical17.scn<br>
-dist_rtems_tests_DATA += spintrcritical17.doc<br>
-<br>
-include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg<br>
-include $(top_srcdir)/../automake/<a href="http://compile.am" rel="noreferrer" target="_blank">compile.am</a><br>
-include $(top_srcdir)/../automake/<a href="http://leaf.am" rel="noreferrer" target="_blank">leaf.am</a><br>
-<br>
-<br>
-AM_CPPFLAGS += -I$(top_srcdir)/../support/include<br>
-AM_CPPFLAGS += -I$(top_srcdir)/spintrcritical_support<br>
-<br>
-LINK_OBJS = $(spintrcritical17_OBJECTS)<br>
-LINK_LIBS = $(spintrcritical17_LDLIBS)<br>
-<br>
-spintrcritical17$(EXEEXT): $(spintrcritical17_OBJECTS) $(spintrcritical17_DEPENDENCIES)<br>
-       @rm -f spintrcritical17$(EXEEXT)<br>
-       $(make-exe)<br>
-<br>
-include $(top_srcdir)/../automake/<a href="http://local.am" rel="noreferrer" target="_blank">local.am</a><br>
diff --git a/testsuites/sptests/spintrcritical17/init.c b/testsuites/sptests/spintrcritical17/init.c<br>
deleted file mode 100644<br>
index 238493e..0000000<br>
--- a/testsuites/sptests/spintrcritical17/init.c<br>
+++ /dev/null<br>
@@ -1,118 +0,0 @@<br>
-/*<br>
- * Copyright (c) 2009-2014 embedded brains GmbH.<br>
- *<br>
- *  embedded brains GmbH<br>
- *  Dornierstr. 4<br>
- *  82178 Puchheim<br>
- *  Germany<br>
- *  <<a href="mailto:rtems@embedded-brains.de">rtems@embedded-brains.de</a>><br>
- *<br>
- * The license and distribution terms for this file may be<br>
- * found in the file LICENSE in this distribution or at<br>
- * <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
- */<br>
-<br>
-#ifdef HAVE_CONFIG_H<br>
-#include "config.h"<br>
-#endif<br>
-<br>
-#include <tmacros.h><br>
-#include <intrcritical.h><br>
-<br>
-#include <rtems/rtems/timerimpl.h><br>
-<br>
-const char rtems_test_name[] = "SPINTRCRITICAL 17";<br>
-<br>
-typedef struct {<br>
-  rtems_id timer1;<br>
-  rtems_id timer2;<br>
-  bool done;<br>
-} test_context;<br>
-<br>
-static test_context ctx_instance;<br>
-<br>
-static void never(rtems_id timer_id, void *arg)<br>
-{<br>
-  rtems_test_assert(0);<br>
-}<br>
-<br>
-static void fire(rtems_id timer_id, void *arg)<br>
-{<br>
-  /* The arg is NULL */<br>
-  test_context *ctx = &ctx_instance;<br>
-  rtems_status_code sc;<br>
-<br>
-  if (!ctx->done) {<br>
-    ctx->done =<br>
-      _Timer_server->Interval_watchdogs.system_watchdog_helper != NULL;<br>
-<br>
-    if (ctx->done) {<br>
-      sc = rtems_timer_server_fire_after(ctx->timer2, 100, never, NULL);<br>
-      rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
-    }<br>
-  }<br>
-}<br>
-<br>
-static bool test_body(void *arg)<br>
-{<br>
-  test_context *ctx = arg;<br>
-  rtems_status_code sc;<br>
-<br>
-  sc = rtems_timer_reset(ctx->timer1);<br>
-  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
-<br>
-  return ctx->done;<br>
-}<br>
-<br>
-static void Init(rtems_task_argument ignored)<br>
-{<br>
-  test_context *ctx = &ctx_instance;<br>
-  rtems_status_code sc;<br>
-<br>
-  TEST_BEGIN();<br>
-<br>
-  sc = rtems_timer_create(<br>
-    rtems_build_name('T', 'I', 'M', '1'),<br>
-    &ctx->timer1<br>
-  );<br>
-  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
-<br>
-  sc = rtems_timer_create(<br>
-    rtems_build_name('T', 'I', 'M', '2'),<br>
-    &ctx->timer2<br>
-  );<br>
-  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
-<br>
-  sc = rtems_timer_initiate_server(<br>
-    RTEMS_MINIMUM_PRIORITY,<br>
-    RTEMS_MINIMUM_STACK_SIZE,<br>
-    RTEMS_DEFAULT_ATTRIBUTES<br>
-  );<br>
-  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
-<br>
-  sc = rtems_timer_server_fire_after(ctx->timer1, 1000, never, NULL);<br>
-  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
-<br>
-  interrupt_critical_section_test(test_body, ctx, fire);<br>
-  rtems_test_assert(ctx->done);<br>
-<br>
-  TEST_END();<br>
-  rtems_test_exit(0);<br>
-}<br>
-<br>
-#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER<br>
-#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER<br>
-<br>
-#define CONFIGURE_MICROSECONDS_PER_TICK 1000<br>
-<br>
-#define CONFIGURE_MAXIMUM_TASKS 2<br>
-#define CONFIGURE_MAXIMUM_TIMERS 3<br>
-#define CONFIGURE_MAXIMUM_USER_EXTENSIONS 1<br>
-<br>
-#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION<br>
-<br>
-#define CONFIGURE_RTEMS_INIT_TASKS_TABLE<br>
-<br>
-#define CONFIGURE_INIT<br>
-<br>
-#include <rtems/confdefs.h><br>
diff --git a/testsuites/sptests/spintrcritical17/spintrcritical17.doc b/testsuites/sptests/spintrcritical17/spintrcritical17.doc<br>
deleted file mode 100644<br>
index 809a966..0000000<br>
--- a/testsuites/sptests/spintrcritical17/spintrcritical17.doc<br>
+++ /dev/null<br>
@@ -1,18 +0,0 @@<br>
-#  Copyright (c) 2009-2015 embedded brains GmbH.<br>
-#<br>
-#  The license and distribution terms for this file may be<br>
-#  found in the file LICENSE in this distribution or at<br>
-#  <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
-#<br>
-<br>
-This file describes the directives and concepts tested by this test set.<br>
-<br>
-test set name:  spintrcritical17<br>
-<br>
-directives:<br>
-<br>
-  _Timer_server_Update_system_watchdog<br>
-<br>
-concepts:<br>
-<br>
-+ Test critical sections which are only accessible through an interrupt.<br>
diff --git a/testsuites/sptests/spintrcritical17/spintrcritical17.scn b/testsuites/sptests/spintrcritical17/spintrcritical17.scn<br>
deleted file mode 100644<br>
index 14566df..0000000<br>
--- a/testsuites/sptests/spintrcritical17/spintrcritical17.scn<br>
+++ /dev/null<br>
@@ -1,2 +0,0 @@<br>
-*** TEST INTERRUPT CRITICAL SECTION 17 ***<br>
-*** END OF INTERRUPT CRITICAL SECTION 17 ***<br>
diff --git a/testsuites/sptests/spintrcritical20/init.c b/testsuites/sptests/spintrcritical20/init.c<br>
index 7e52211..85c1645 100644<br>
--- a/testsuites/sptests/spintrcritical20/init.c<br>
+++ b/testsuites/sptests/spintrcritical20/init.c<br>
@@ -91,7 +91,7 @@ static bool test_body(void *arg)<br>
     ctx->thread_queue_was_null = true;<br>
   }<br>
<br>
-  _Thread_Timeout(0, ctx->semaphore_task_tcb);<br>
+  _Thread_Timeout(&ctx->semaphore_task_tcb->Timer.Watchdog);<br>
<br>
   switch (ctx->semaphore_task_tcb->Wait.return_code) {<br>
     case CORE_SEMAPHORE_STATUS_SUCCESSFUL:<br>
diff --git a/testsuites/sptests/spsize/size.c b/testsuites/sptests/spsize/size.c<br>
index e9470e3..e19ca99 100644<br>
--- a/testsuites/sptests/spsize/size.c<br>
+++ b/testsuites/sptests/spsize/size.c<br>
@@ -391,8 +391,6 @@ uninitialized =<br>
 /*userext.h*/   (sizeof _User_extensions_List)            +<br>
<br>
 /*watchdog.h*/  (sizeof _Watchdog_Ticks_since_boot)       +<br>
-                (sizeof _Watchdog_Ticks_header)           +<br>
-                (sizeof _Watchdog_Seconds_header)         +<br>
<br>
 /*wkspace.h*/   (sizeof _Workspace_Area);<br>
<br>
diff --git a/testsuites/sptests/sptimecounter01/init.c b/testsuites/sptests/sptimecounter01/init.c<br>
index 7b31064..d87ffec 100644<br>
--- a/testsuites/sptests/sptimecounter01/init.c<br>
+++ b/testsuites/sptests/sptimecounter01/init.c<br>
@@ -24,7 +24,6 @@<br>
<br>
 #include <rtems/score/timecounterimpl.h><br>
 #include <rtems/score/todimpl.h><br>
-#include <rtems/score/watchdogimpl.h><br>
 #include <rtems/timecounter.h><br>
 #include <rtems/bsd.h><br>
<br>
@@ -57,8 +56,6 @@ void boot_card(const char *cmdline)<br>
<br>
   rtems_test_begink();<br>
<br>
-  _Watchdog_Handler_initialization();<br>
-<br>
   assert(time(NULL) == TOD_SECONDS_1970_THROUGH_1988);<br>
<br>
   rtems_bsd_bintime(&bt);<br>
diff --git a/testsuites/sptests/sptimerserver01/Makefile.am b/testsuites/sptests/sptimerserver01/Makefile.am<br>
new file mode 100644<br>
index 0000000..2e5048d<br>
--- /dev/null<br>
+++ b/testsuites/sptests/sptimerserver01/Makefile.am<br>
@@ -0,0 +1,19 @@<br>
+rtems_tests_PROGRAMS = sptimerserver01<br>
+sptimerserver01_SOURCES = init.c<br>
+<br>
+dist_rtems_tests_DATA = sptimerserver01.scn sptimerserver01.doc<br>
+<br>
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg<br>
+include $(top_srcdir)/../automake/<a href="http://compile.am" rel="noreferrer" target="_blank">compile.am</a><br>
+include $(top_srcdir)/../automake/<a href="http://leaf.am" rel="noreferrer" target="_blank">leaf.am</a><br>
+<br>
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include<br>
+<br>
+LINK_OBJS = $(sptimerserver01_OBJECTS)<br>
+LINK_LIBS = $(sptimerserver01_LDLIBS)<br>
+<br>
+sptimerserver01$(EXEEXT): $(sptimerserver01_OBJECTS) $(sptimerserver01_DEPENDENCIES)<br>
+       @rm -f sptimerserver01$(EXEEXT)<br>
+       $(make-exe)<br>
+<br>
+include $(top_srcdir)/../automake/<a href="http://local.am" rel="noreferrer" target="_blank">local.am</a><br>
diff --git a/testsuites/sptests/sptimerserver01/init.c b/testsuites/sptests/sptimerserver01/init.c<br>
new file mode 100644<br>
index 0000000..88f1fb3<br>
--- /dev/null<br>
+++ b/testsuites/sptests/sptimerserver01/init.c<br>
@@ -0,0 +1,129 @@<br>
+/*<br>
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.<br>
+ *<br>
+ *  embedded brains GmbH<br>
+ *  Dornierstr. 4<br>
+ *  82178 Puchheim<br>
+ *  Germany<br>
+ *  <<a href="mailto:rtems@embedded-brains.de">rtems@embedded-brains.de</a>><br>
+ *<br>
+ * The license and distribution terms for this file may be<br>
+ * found in the file LICENSE in this distribution or at<br>
+ * <a href="http://www.rtems.org/license/LICENSE" rel="noreferrer" target="_blank">http://www.rtems.org/license/LICENSE</a>.<br>
+ */<br>
+<br>
+#ifdef HAVE_CONFIG_H<br>
+  #include "config.h"<br>
+#endif<br>
+<br>
+#include "tmacros.h"<br>
+<br>
+const char rtems_test_name[] = "SPTIMERSERVER 1";<br>
+<br>
+#define TIMER_COUNT 2<br>
+<br>
+typedef struct {<br>
+  rtems_id timer[TIMER_COUNT];<br>
+  rtems_id master;<br>
+} test_context;<br>
+<br>
+static test_context ctx_instance;<br>
+<br>
+static const rtems_time_of_day start = {<br>
+  .year = 2016,<br>
+  .month = 3,<br>
+  .day = 1,<br>
+  .hour = 12,<br>
+  .minute = 5,<br>
+  .second = 17<br>
+};<br>
+<br>
+static void cancel(rtems_id id, void *arg)<br>
+{<br>
+  test_context *ctx = arg;<br>
+  rtems_status_code sc;<br>
+<br>
+  sc = rtems_timer_cancel(ctx->timer[1]);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_event_transient_send(ctx->master);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+}<br>
+<br>
+static void never(rtems_id id, void *arg)<br>
+{<br>
+  rtems_test_assert(0);<br>
+}<br>
+<br>
+static void test(void)<br>
+{<br>
+  test_context *ctx = &ctx_instance;<br>
+  rtems_status_code sc;<br>
+  size_t i;<br>
+  rtems_time_of_day later;<br>
+<br>
+  ctx->master = rtems_task_self();<br>
+<br>
+  sc = rtems_timer_initiate_server(<br>
+    RTEMS_MINIMUM_PRIORITY,<br>
+    RTEMS_MINIMUM_STACK_SIZE,<br>
+    RTEMS_DEFAULT_ATTRIBUTES<br>
+  );<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  for (i = 0; i < TIMER_COUNT; ++i) {<br>
+    sc = rtems_timer_create(<br>
+      rtems_build_name('T', 'M', 'R', '0' + i),<br>
+      &ctx->timer[i]<br>
+    );<br>
+    rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+  }<br>
+<br>
+  sc = rtems_timer_server_fire_after(ctx->timer[0], 10, cancel, ctx);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_timer_server_fire_after(ctx->timer[1], 10, never, NULL);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_clock_set(&start);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  later = start;<br>
+  ++later.second;<br>
+<br>
+  sc = rtems_timer_server_fire_when(ctx->timer[0], &later, cancel, ctx);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_timer_server_fire_when(ctx->timer[1], &later, never, NULL);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+<br>
+  sc = rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT);<br>
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);<br>
+}<br>
+<br>
+static void Init(rtems_task_argument arg)<br>
+{<br>
+  TEST_BEGIN();<br>
+<br>
+  test();<br>
+<br>
+  TEST_END();<br>
+  rtems_test_exit(0);<br>
+}<br>
+<br>
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER<br>
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER<br>
+<br>
+#define CONFIGURE_MAXIMUM_TASKS 2<br>
+#define CONFIGURE_MAXIMUM_TIMERS TIMER_COUNT<br>
+<br>
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION<br>
+<br>
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE<br>
+<br>
+#define CONFIGURE_INIT<br>
+<br>
+#include <rtems/confdefs.h><br>
diff --git a/testsuites/sptests/sptimerserver01/sptimerserver01.doc b/testsuites/sptests/sptimerserver01/sptimerserver01.doc<br>
new file mode 100644<br>
index 0000000..c0dc4ef<br>
--- /dev/null<br>
+++ b/testsuites/sptests/sptimerserver01/sptimerserver01.doc<br>
@@ -0,0 +1,12 @@<br>
+This file describes the directives and concepts tested by this test set.<br>
+<br>
+test set name: sptimerserver01<br>
+<br>
+directives:<br>
+<br>
+  - rtems_timer_cancel()<br>
+<br>
+concepts:<br>
+<br>
+  - Ensure that pending timer server timers are cancelled via<br>
+    rtems_timer_cancel().<br>
diff --git a/testsuites/sptests/sptimerserver01/sptimerserver01.scn b/testsuites/sptests/sptimerserver01/sptimerserver01.scn<br>
new file mode 100644<br>
index 0000000..315f030<br>
--- /dev/null<br>
+++ b/testsuites/sptests/sptimerserver01/sptimerserver01.scn<br>
@@ -0,0 +1,2 @@<br>
+*** BEGIN OF TEST SPTIMERSERVER 1 ***<br>
+*** END OF TEST SPTIMERSERVER 1 ***<br>
diff --git a/testsuites/sptests/spwatchdog/init.c b/testsuites/sptests/spwatchdog/init.c<br>
index 025295b..3b08fb5 100644<br>
--- a/testsuites/sptests/spwatchdog/init.c<br>
+++ b/testsuites/sptests/spwatchdog/init.c<br>
@@ -26,241 +26,192 @@<br>
<br>
 const char rtems_test_name[] = "SPWATCHDOG";<br>
<br>
-static void test_watchdog_routine( Objects_Id id, void *arg )<br>
-{<br>
-  (void) id;<br>
-  (void) arg;<br>
-<br>
-  rtems_test_assert( 0 );<br>
-}<br>
+typedef struct {<br>
+  Watchdog_Control Base;<br>
+  int counter;<br>
+} test_watchdog;<br>
<br>
-static void init_watchdogs(<br>
-  Watchdog_Header *header,<br>
-  Watchdog_Control watchdogs[4]<br>
-)<br>
+static void test_watchdog_routine( Watchdog_Control *base )<br>
 {<br>
-  Watchdog_Control *a = &watchdogs[0];<br>
-  Watchdog_Control *b = &watchdogs[1];<br>
-  Watchdog_Control *c = &watchdogs[2];<br>
-  Watchdog_Control *d = &watchdogs[3];<br>
-<br>
-  _Watchdog_Header_initialize( header );<br>
-  rtems_test_assert( _Watchdog_Is_empty( header ) );<br>
-  rtems_test_assert( _Chain_Is_empty( &header->Iterators ) );<br>
-<br>
-  _Watchdog_Preinitialize( c );<br>
-  c->initial = 6;<br>
-  _Watchdog_Insert( header, c );<br>
-  rtems_test_assert( c->delta_interval == 6 );<br>
-<br>
-  rtems_test_assert( !_Watchdog_Is_empty( header ) );<br>
-  rtems_test_assert( _Chain_Is_empty( &header->Iterators ) );<br>
-<br>
-  _Watchdog_Preinitialize( a );<br>
-  a->initial = 2;<br>
-  _Watchdog_Insert( header, a );<br>
-  rtems_test_assert( a->delta_interval == 2 );<br>
-  rtems_test_assert( c->delta_interval == 4 );<br>
-<br>
-  _Watchdog_Preinitialize( b );<br>
-  b->initial = 4;<br>
-  _Watchdog_Insert( header, b );<br>
-  rtems_test_assert( a->delta_interval == 2 );<br>
-  rtems_test_assert( b->delta_interval == 2 );<br>
-  rtems_test_assert( c->delta_interval == 2 );<br>
-<br>
-  _Watchdog_Preinitialize( d );<br>
-}<br>
+  test_watchdog *watchdog = (test_watchdog *) base;<br>
<br>
-static void destroy_watchdogs(<br>
-  Watchdog_Header *header<br>
-)<br>
-{<br>
-  _ISR_lock_Destroy( &header->Lock );<br>
+  ++watchdog->counter;<br>
 }<br>
<br>
-static void add_iterator(<br>
-  Watchdog_Header *header,<br>
-  Watchdog_Iterator *i,<br>
-  Watchdog_Control *w<br>
-)<br>
+static void test_watchdog_static_init( void )<br>
 {<br>
-  _Chain_Append_unprotected( &header->Iterators, &i->Node );<br>
-  i->delta_interval = 2;<br>
-  i->current = &w->Node;<br>
-}<br>
+  static Watchdog_Control a = WATCHDOG_INITIALIZER(<br>
+    test_watchdog_routine<br>
+  );<br>
+  Watchdog_Control b;<br>
<br>
-static void test_watchdog_insert_and_remove( void )<br>
-{<br>
-  Watchdog_Header header;<br>
-  Watchdog_Control watchdogs[4];<br>
-  Watchdog_Control *a = &watchdogs[0];<br>
-  Watchdog_Control *b = &watchdogs[1];<br>
-  Watchdog_Control *c = &watchdogs[2];<br>
-  Watchdog_Control *d = &watchdogs[3];<br>
-  Watchdog_Iterator i;<br>
-<br>
-  init_watchdogs( &header, watchdogs );<br>
-  add_iterator( &header, &i, c );<br>
-<br>
-  /* Remove next watchdog of iterator */<br>
-  _Watchdog_Remove( &header, c );<br>
-  rtems_test_assert( i.delta_interval == 4 );<br>
-  rtems_test_assert( i.current == &b->Node );<br>
-<br>
-  /* Remove watchdog before the current watchdog of iterator */<br>
-  _Watchdog_Remove( &header, a );<br>
-  rtems_test_assert( i.delta_interval == 6 );<br>
-  rtems_test_assert( i.current == &b->Node );<br>
-<br>
-  /* Remove current (= last) watchdog of iterator */<br>
-  _Watchdog_Remove( &header, b );<br>
-  rtems_test_assert( i.delta_interval == 6 );<br>
-  rtems_test_assert( i.current == _Chain_Head( &header.Watchdogs ) );<br>
-<br>
-  /* Insert first watchdog */<br>
-  a->initial = 1;<br>
-  _Watchdog_Insert( &header, a );<br>
-  rtems_test_assert( i.delta_interval == 6 );<br>
-  rtems_test_assert( i.current == _Chain_Head( &header.Watchdogs ) );<br>
-<br>
-  destroy_watchdogs( &header );<br>
-  init_watchdogs( &header, watchdogs );<br>
-  add_iterator( &header, &i, b );<br>
-<br>
-  /* Insert right before current watchdog of iterator */<br>
-  d->initial = 3;<br>
-  _Watchdog_Insert( &header, d );<br>
-  rtems_test_assert( i.delta_interval == 2 );<br>
-  rtems_test_assert( i.current == &d->Node );<br>
-<br>
-  destroy_watchdogs( &header );<br>
-  init_watchdogs( &header, watchdogs );<br>
-  add_iterator( &header, &i, b );<br>
-<br>
-  /* Insert right after current watchdog of iterator */<br>
-  d->initial = 5;<br>
-  _Watchdog_Insert( &header, d );<br>
-  rtems_test_assert( i.delta_interval == 2 );<br>
-  rtems_test_assert( i.current == &b->Node );<br>
-<br>
-  destroy_watchdogs( &header );<br>
+  memset( &b, 0, sizeof( b ) );<br>
+  _Watchdog_Preinitialize( &b, _Per_CPU_Get_by_index( 0 ) );<br>
+  _Watchdog_Initialize(<br>
+    &b,<br>
+    test_watchdog_routine<br>
+  );<br>
+<br>
+  rtems_test_assert( memcmp( &a, &b, sizeof( a ) ) == 0 );<br>
 }<br>
<br>
-static void init_watchdogs_remove_second_and_insert_first(<br>
-  Watchdog_Header *header,<br>
-  Watchdog_Control watchdogs[3]<br>
-)<br>
+static bool test_watchdog_is_inactive( test_watchdog *watchdog )<br>
 {<br>
-  Watchdog_Control *a = &watchdogs[0];<br>
-  Watchdog_Control *b = &watchdogs[1];<br>
-  Watchdog_Control *c = &watchdogs[2];<br>
-<br>
-  _Watchdog_Preinitialize( a );<br>
-  _Watchdog_Preinitialize( b );<br>
-  _Watchdog_Preinitialize( c );<br>
-<br>
-  _Watchdog_Header_initialize( header );<br>
-<br>
-  a->initial = 6;<br>
-  _Watchdog_Insert( header, a );<br>
-  rtems_test_assert( a->delta_interval == 6 );<br>
-<br>
-  b->initial = 8;<br>
-  _Watchdog_Insert( header, b );<br>
-  rtems_test_assert( a->delta_interval == 6 );<br>
-  rtems_test_assert( b->delta_interval == 2 );<br>
+  return _Watchdog_Get_state( &watchdog->Base ) == WATCHDOG_INACTIVE;<br>
 }<br>
<br>
-static void test_watchdog_remove_second_and_insert_first( void )<br>
+static void test_watchdog_init( test_watchdog *watchdog, int counter )<br>
 {<br>
-  Watchdog_Header header;<br>
-  Watchdog_Control watchdogs[3];<br>
-  Watchdog_Control *a = &watchdogs[0];<br>
-  Watchdog_Control *b = &watchdogs[1];<br>
-  Watchdog_Control *c = &watchdogs[2];<br>
-  Watchdog_Iterator i;<br>
-<br>
-  init_watchdogs_remove_second_and_insert_first( &header, watchdogs );<br>
-  add_iterator( &header, &i, b );<br>
-<br>
-  _Watchdog_Remove( &header, b );<br>
-  rtems_test_assert( i.delta_interval == 8 );<br>
-  rtems_test_assert( i.current == &a->Node );<br>
-<br>
-  c->initial = 4;<br>
-  _Watchdog_Insert( &header, c );<br>
-  rtems_test_assert( a->delta_interval == 2 );<br>
-  rtems_test_assert( c->delta_interval == 4 );<br>
-  rtems_test_assert( i.delta_interval == 8 );<br>
-  rtems_test_assert( i.current == &c->Node );<br>
-<br>
-  destroy_watchdogs( &header );<br>
+  _Watchdog_Preinitialize( &watchdog->Base, _Per_CPU_Get_snapshot() );<br>
+  _Watchdog_Initialize( &watchdog->Base, test_watchdog_routine );<br>
+  rtems_test_assert( test_watchdog_is_inactive( watchdog ) ) ;<br>
+  watchdog->counter = counter;<br>
 }<br>
<br>
-static void init_watchdogs_insert_with_iterator(<br>
-  Watchdog_Header *header,<br>
-  Watchdog_Control watchdogs[2]<br>
-)<br>
+static uint64_t test_watchdog_tick( Watchdog_Header *header, uint64_t now )<br>
 {<br>
-  Watchdog_Control *a = &watchdogs[0];<br>
-  Watchdog_Control *b = &watchdogs[1];<br>
+  ISR_LOCK_DEFINE( , lock, "Test" )<br>
+  ISR_lock_Context lock_context;<br>
<br>
-  _Watchdog_Preinitialize( a );<br>
-  _Watchdog_Preinitialize( b );<br>
+  _ISR_lock_ISR_disable_and_acquire( &lock, &lock_context );<br>
+  ++now;<br>
+  _Watchdog_Tickle( header, now, &lock, &lock_context );<br>
+  _ISR_lock_Destroy( &lock );<br>
<br>
-  _Watchdog_Header_initialize( header );<br>
-<br>
-  a->initial = 6;<br>
-  _Watchdog_Insert( header, a );<br>
-  rtems_test_assert( a->delta_interval == 6 );<br>
+  return now;<br>
 }<br>
<br>
-static void test_watchdog_insert_with_iterator( void )<br>
+static void test_watchdog_operations( void )<br>
 {<br>
   Watchdog_Header header;<br>
-  Watchdog_Control watchdogs[2];<br>
-  Watchdog_Control *a = &watchdogs[0];<br>
-  Watchdog_Control *b = &watchdogs[1];<br>
-  Watchdog_Iterator i;<br>
-<br>
-  init_watchdogs_insert_with_iterator( &header, watchdogs );<br>
-  add_iterator( &header, &i, a );<br>
-<br>
-  b->initial = 4;<br>
-  _Watchdog_Insert( &header, b );<br>
-  rtems_test_assert( a->delta_interval == 2 );<br>
-  rtems_test_assert( b->delta_interval == 4 );<br>
-  rtems_test_assert( i.delta_interval == 2 );<br>
-  rtems_test_assert( i.current == &b->Node );<br>
-<br>
-  destroy_watchdogs( &header );<br>
-}<br>
-<br>
-static void test_watchdog_static_init( void )<br>
-{<br>
-  #if defined(RTEMS_USE_16_BIT_OBJECT)<br>
-    #define JUNK_ID 0x1234<br>
-  #else<br>
-    #define JUNK_ID 0x12345678<br>
-  #endif<br>
-<br>
-  static Watchdog_Control a = WATCHDOG_INITIALIZER(<br>
-    test_watchdog_routine,<br>
-    JUNK_ID,<br>
-    (void *) 0xdeadbeef<br>
-  );<br>
-  Watchdog_Control b;<br>
-<br>
-  memset( &b, 0, sizeof( b ) );<br>
-  _Watchdog_Initialize(<br>
-    &b,<br>
-    test_watchdog_routine,<br>
-    JUNK_ID,<br>
-    (void *) 0xdeadbeef<br>
-  );<br>
-<br>
-  rtems_test_assert( memcmp( &a, &b, sizeof( a ) ) == 0 );<br>
+  uint64_t now;<br>
+  test_watchdog a;<br>
+  test_watchdog b;<br>
+  test_watchdog c;<br>
+<br>
+  _Watchdog_Header_initialize( &header );<br>
+  rtems_test_assert( _RBTree_Is_empty( &header.Watchdogs ) );<br>
+  rtems_test_assert( header.first == NULL );<br>
+<br>
+  test_watchdog_init( &a, 10 );<br>
+  test_watchdog_init( &b, 20 );<br>
+  test_watchdog_init( &c, 30 );<br>
+<br>
+  now = 0;<br>
+  now = test_watchdog_tick( &header, now );<br>
+<br>
+  _Watchdog_Insert( &header, &a.Base, now + 1 );<br>
+  rtems_test_assert( header.first == &a.Base.Node.RBTree );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 2 );<br>
+  rtems_test_assert( a.counter == 10 );<br>
+<br>
+  _Watchdog_Remove( &header, &a.Base );<br>
+  rtems_test_assert( header.first == NULL );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 2 );<br>
+  rtems_test_assert( a.counter == 10 );<br>
+<br>
+  _Watchdog_Remove( &header, &a.Base );<br>
+  rtems_test_assert( header.first == NULL );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 2 );<br>
+  rtems_test_assert( a.counter == 10 );<br>
+<br>
+  _Watchdog_Insert( &header, &a.Base, now + 1 );<br>
+  rtems_test_assert( header.first == &a.Base.Node.RBTree );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 2 );<br>
+  rtems_test_assert( a.counter == 10 );<br>
+<br>
+  _Watchdog_Insert( &header, &b.Base, now + 1 );<br>
+  rtems_test_assert( header.first == &a.Base.Node.RBTree );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &b ) ) ;<br>
+  rtems_test_assert( b.Base.expire == 2 );<br>
+  rtems_test_assert( b.counter == 20 );<br>
+<br>
+  _Watchdog_Insert( &header, &c.Base, now + 2 );<br>
+  rtems_test_assert( header.first == &a.Base.Node.RBTree );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &c ) ) ;<br>
+  rtems_test_assert( c.Base.expire == 3 );<br>
+  rtems_test_assert( c.counter == 30 );<br>
+<br>
+  _Watchdog_Remove( &header, &a.Base );<br>
+  rtems_test_assert( header.first == &b.Base.Node.RBTree );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 2 );<br>
+  rtems_test_assert( a.counter == 10 );<br>
+<br>
+  _Watchdog_Remove( &header, &b.Base );<br>
+  rtems_test_assert( header.first == &c.Base.Node.RBTree );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &b ) ) ;<br>
+  rtems_test_assert( b.Base.expire == 2 );<br>
+  rtems_test_assert( b.counter == 20 );<br>
+<br>
+  _Watchdog_Remove( &header, &c.Base );<br>
+  rtems_test_assert( header.first == NULL );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &c ) ) ;<br>
+  rtems_test_assert( c.Base.expire == 3 );<br>
+  rtems_test_assert( c.counter == 30 );<br>
+<br>
+  _Watchdog_Insert( &header, &a.Base, now + 2 );<br>
+  rtems_test_assert( header.first == &a.Base.Node.RBTree );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 3 );<br>
+  rtems_test_assert( a.counter == 10 );<br>
+<br>
+  _Watchdog_Insert( &header, &b.Base, now + 2 );<br>
+  rtems_test_assert( header.first == &a.Base.Node.RBTree );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &b ) ) ;<br>
+  rtems_test_assert( b.Base.expire == 3 );<br>
+  rtems_test_assert( b.counter == 20 );<br>
+<br>
+  _Watchdog_Insert( &header, &c.Base, now + 3 );<br>
+  rtems_test_assert( header.first == &a.Base.Node.RBTree );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &c ) ) ;<br>
+  rtems_test_assert( c.Base.expire == 4 );<br>
+  rtems_test_assert( c.counter == 30 );<br>
+<br>
+  now = test_watchdog_tick( &header, now );<br>
+  rtems_test_assert( !_RBTree_Is_empty( &header.Watchdogs ) );<br>
+  rtems_test_assert( header.first == &a.Base.Node.RBTree );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 3 );<br>
+  rtems_test_assert( a.counter == 10 );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &b ) ) ;<br>
+  rtems_test_assert( b.Base.expire == 3 );<br>
+  rtems_test_assert( b.counter == 20 );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &c ) ) ;<br>
+  rtems_test_assert( c.Base.expire == 4 );<br>
+  rtems_test_assert( c.counter == 30 );<br>
+<br>
+  now = test_watchdog_tick( &header, now );<br>
+  rtems_test_assert( !_RBTree_Is_empty( &header.Watchdogs ) );<br>
+  rtems_test_assert( header.first == &c.Base.Node.RBTree );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 3 );<br>
+  rtems_test_assert( a.counter == 11 );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &b ) ) ;<br>
+  rtems_test_assert( b.Base.expire == 3 );<br>
+  rtems_test_assert( b.counter == 21 );<br>
+  rtems_test_assert( !test_watchdog_is_inactive( &c ) ) ;<br>
+  rtems_test_assert( c.Base.expire == 4 );<br>
+  rtems_test_assert( c.counter == 30 );<br>
+<br>
+  now = test_watchdog_tick( &header, now );<br>
+  rtems_test_assert( _RBTree_Is_empty( &header.Watchdogs ) );<br>
+  rtems_test_assert( header.first == NULL );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &a ) ) ;<br>
+  rtems_test_assert( a.Base.expire == 3 );<br>
+  rtems_test_assert( a.counter == 11 );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &b ) ) ;<br>
+  rtems_test_assert( b.Base.expire == 3 );<br>
+  rtems_test_assert( b.counter == 21 );<br>
+  rtems_test_assert( test_watchdog_is_inactive( &c ) ) ;<br>
+  rtems_test_assert( c.Base.expire == 4 );<br>
+  rtems_test_assert( c.counter == 31 );<br>
+<br>
+  _Watchdog_Header_destroy( &header );<br>
 }<br>
<br>
 rtems_task Init(<br>
@@ -272,10 +223,8 @@ rtems_task Init(<br>
<br>
   TEST_BEGIN();<br>
<br>
+  test_watchdog_operations();<br>
   test_watchdog_static_init();<br>
-  test_watchdog_insert_and_remove();<br>
-  test_watchdog_remove_second_and_insert_first();<br>
-  test_watchdog_insert_with_iterator();<br>
<br>
   build_time( &time, 12, 31, 1988, 9, 0, 0, 0 );<br>
<br>
diff --git a/testsuites/tmtests/tmtimer01/tmtimer01.scn b/testsuites/tmtests/tmtimer01/tmtimer01.scn<br>
index ea882d4..db3ca01 100644<br>
--- a/testsuites/tmtests/tmtimer01/tmtimer01.scn<br>
+++ b/testsuites/tmtests/tmtimer01/tmtimer01.scn<br>
@@ -1,137 +1,137 @@<br>
 <TMTimer01 timerCount="65504"><br>
   <Sample><br>
-    <ActiveTimers>0</ActiveTimers><First unit="ns">6397</First><Middle unit="ns">3290</Middle><Last unit="ns">1527</Last><br>
+    <ActiveTimers>0</ActiveTimers><First unit="ns">8812</First><Middle unit="ns">1412</Middle><Last unit="ns">917</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>2</ActiveTimers><First unit="ns">1986</First><Middle unit="ns">1550</Middle><Last unit="ns">1314</Last><br>
+    <ActiveTimers>2</ActiveTimers><First unit="ns">1602</First><Middle unit="ns">1010</Middle><Last unit="ns">1367</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>4</ActiveTimers><First unit="ns">1551</First><Middle unit="ns">2134</Middle><Last unit="ns">3072</Last><br>
+    <ActiveTimers>4</ActiveTimers><First unit="ns">1524</First><Middle unit="ns">1089</Middle><Last unit="ns">1086</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>7</ActiveTimers><First unit="ns">2545</First><Middle unit="ns">3511</Middle><Last unit="ns">3404</Last><br>
+    <ActiveTimers>7</ActiveTimers><First unit="ns">1791</First><Middle unit="ns">1121</Middle><Last unit="ns">1838</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>10</ActiveTimers><First unit="ns">1595</First><Middle unit="ns">2363</Middle><Last unit="ns">4287</Last><br>
+    <ActiveTimers>10</ActiveTimers><First unit="ns">1488</First><Middle unit="ns">1016</Middle><Last unit="ns">2134</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>14</ActiveTimers><First unit="ns">1473</First><Middle unit="ns">2740</Middle><Last unit="ns">6069</Last><br>
+    <ActiveTimers>14</ActiveTimers><First unit="ns">1527</First><Middle unit="ns">1698</Middle><Last unit="ns">3186</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>19</ActiveTimers><First unit="ns">1566</First><Middle unit="ns">3195</Middle><Last unit="ns">5993</Last><br>
+    <ActiveTimers>19</ActiveTimers><First unit="ns">2078</First><Middle unit="ns">1665</Middle><Last unit="ns">3397</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>25</ActiveTimers><First unit="ns">1251</First><Middle unit="ns">2718</Middle><Last unit="ns">7307</Last><br>
+    <ActiveTimers>25</ActiveTimers><First unit="ns">1519</First><Middle unit="ns">2368</Middle><Last unit="ns">4464</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>32</ActiveTimers><First unit="ns">2302</First><Middle unit="ns">5690</Middle><Last unit="ns">10269</Last><br>
+    <ActiveTimers>32</ActiveTimers><First unit="ns">1243</First><Middle unit="ns">2623</Middle><Last unit="ns">3549</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>41</ActiveTimers><First unit="ns">1522</First><Middle unit="ns">8221</Middle><Last unit="ns">13424</Last><br>
+    <ActiveTimers>41</ActiveTimers><First unit="ns">2368</First><Middle unit="ns">2578</Middle><Last unit="ns">4105</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>52</ActiveTimers><First unit="ns">1799</First><Middle unit="ns">8455</Middle><Last unit="ns">14820</Last><br>
+    <ActiveTimers>52</ActiveTimers><First unit="ns">2322</First><Middle unit="ns">2563</Middle><Last unit="ns">4126</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>66</ActiveTimers><First unit="ns">1062</First><Middle unit="ns">12480</Middle><Last unit="ns">16590</Last><br>
+    <ActiveTimers>66</ActiveTimers><First unit="ns">2499</First><Middle unit="ns">1855</Middle><Last unit="ns">4919</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>83</ActiveTimers><First unit="ns">1384</First><Middle unit="ns">11710</Middle><Last unit="ns">21854</Last><br>
+    <ActiveTimers>83</ActiveTimers><First unit="ns">1689</First><Middle unit="ns">3128</Middle><Last unit="ns">5894</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>104</ActiveTimers><First unit="ns">1666</First><Middle unit="ns">15200</Middle><Last unit="ns">30951</Last><br>
+    <ActiveTimers>104</ActiveTimers><First unit="ns">2301</First><Middle unit="ns">2647</Middle><Last unit="ns">4595</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>130</ActiveTimers><First unit="ns">1345</First><Middle unit="ns">17154</Middle><Last unit="ns">37942</Last><br>
+    <ActiveTimers>130</ActiveTimers><First unit="ns">2880</First><Middle unit="ns">3183</Middle><Last unit="ns">6222</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>162</ActiveTimers><First unit="ns">1369</First><Middle unit="ns">22381</Middle><Last unit="ns">46929</Last><br>
+    <ActiveTimers>162</ActiveTimers><First unit="ns">2597</First><Middle unit="ns">2376</Middle><Last unit="ns">7118</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>201</ActiveTimers><First unit="ns">2271</First><Middle unit="ns">35625</Middle><Last unit="ns">59972</Last><br>
+    <ActiveTimers>201</ActiveTimers><First unit="ns">3519</First><Middle unit="ns">3466</Middle><Last unit="ns">6673</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>249</ActiveTimers><First unit="ns">1279</First><Middle unit="ns">37271</Middle><Last unit="ns">69662</Last><br>
+    <ActiveTimers>249</ActiveTimers><First unit="ns">2829</First><Middle unit="ns">3177</Middle><Last unit="ns">7784</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>308</ActiveTimers><First unit="ns">864</First><Middle unit="ns">44580</Middle><Last unit="ns">87633</Last><br>
+    <ActiveTimers>308</ActiveTimers><First unit="ns">2614</First><Middle unit="ns">3396</Middle><Last unit="ns">7338</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>381</ActiveTimers><First unit="ns">1078</First><Middle unit="ns">53821</Middle><Last unit="ns">106376</Last><br>
+    <ActiveTimers>381</ActiveTimers><First unit="ns">3454</First><Middle unit="ns">4888</Middle><Last unit="ns">9114</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>470</ActiveTimers><First unit="ns">913</First><Middle unit="ns">67021</Middle><Last unit="ns">133201</Last><br>
+    <ActiveTimers>470</ActiveTimers><First unit="ns">3397</First><Middle unit="ns">2443</Middle><Last unit="ns">7689</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>580</ActiveTimers><First unit="ns">1870</First><Middle unit="ns">79863</Middle><Last unit="ns">169394</Last><br>
+    <ActiveTimers>580</ActiveTimers><First unit="ns">2233</First><Middle unit="ns">4410</Middle><Last unit="ns">9355</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>715</ActiveTimers><First unit="ns">1732</First><Middle unit="ns">99965</Middle><Last unit="ns">208901</Last><br>
+    <ActiveTimers>715</ActiveTimers><First unit="ns">3787</First><Middle unit="ns">5891</Middle><Last unit="ns">6833</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>881</ActiveTimers><First unit="ns">1503</First><Middle unit="ns">138820</Middle><Last unit="ns">259314</Last><br>
+    <ActiveTimers>881</ActiveTimers><First unit="ns">3839</First><Middle unit="ns">5089</Middle><Last unit="ns">9232</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>1085</ActiveTimers><First unit="ns">1096</First><Middle unit="ns">166404</Middle><Last unit="ns">337461</Last><br>
+    <ActiveTimers>1085</ActiveTimers><First unit="ns">2838</First><Middle unit="ns">2739</Middle><Last unit="ns">11575</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>1336</ActiveTimers><First unit="ns">1383</First><Middle unit="ns">209434</Middle><Last unit="ns">445806</Last><br>
+    <ActiveTimers>1336</ActiveTimers><First unit="ns">3256</First><Middle unit="ns">5011</Middle><Last unit="ns">9684</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>1645</ActiveTimers><First unit="ns">1787</First><Middle unit="ns">253904</Middle><Last unit="ns">533644</Last><br>
+    <ActiveTimers>1645</ActiveTimers><First unit="ns">2293</First><Middle unit="ns">5262</Middle><Last unit="ns">10183</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>2025</ActiveTimers><First unit="ns">2082</First><Middle unit="ns">327384</Middle><Last unit="ns">657141</Last><br>
+    <ActiveTimers>2025</ActiveTimers><First unit="ns">4436</First><Middle unit="ns">5934</Middle><Last unit="ns">8804</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>2492</ActiveTimers><First unit="ns">1843</First><Middle unit="ns">417457</Middle><Last unit="ns">814380</Last><br>
+    <ActiveTimers>2492</ActiveTimers><First unit="ns">4506</First><Middle unit="ns">7284</Middle><Last unit="ns">10389</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>3067</ActiveTimers><First unit="ns">1980</First><Middle unit="ns">493511</Middle><Last unit="ns">977427</Last><br>
+    <ActiveTimers>3067</ActiveTimers><First unit="ns">3832</First><Middle unit="ns">4990</Middle><Last unit="ns">9536</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>3774</ActiveTimers><First unit="ns">2695</First><Middle unit="ns">622065</Middle><Last unit="ns">1237577</Last><br>
+    <ActiveTimers>3774</ActiveTimers><First unit="ns">5088</First><Middle unit="ns">4888</Middle><Last unit="ns">9633</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>4644</ActiveTimers><First unit="ns">1463</First><Middle unit="ns">827565</Middle><Last unit="ns">1565553</Last><br>
+    <ActiveTimers>4644</ActiveTimers><First unit="ns">5590</First><Middle unit="ns">5749</Middle><Last unit="ns">8975</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>5714</ActiveTimers><First unit="ns">1866</First><Middle unit="ns">1053458</Middle><Last unit="ns">1914932</Last><br>
+    <ActiveTimers>5714</ActiveTimers><First unit="ns">4854</First><Middle unit="ns">6813</Middle><Last unit="ns">11603</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>7030</ActiveTimers><First unit="ns">3481</First><Middle unit="ns">1266198</Middle><Last unit="ns">2450199</Last><br>
+    <ActiveTimers>7030</ActiveTimers><First unit="ns">6139</First><Middle unit="ns">6132</Middle><Last unit="ns">12630</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>8649</ActiveTimers><First unit="ns">2773</First><Middle unit="ns">1558351</Middle><Last unit="ns">2967472</Last><br>
+    <ActiveTimers>8649</ActiveTimers><First unit="ns">6877</First><Middle unit="ns">3852</Middle><Last unit="ns">10973</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>10640</ActiveTimers><First unit="ns">2086</First><Middle unit="ns">2003884</Middle><Last unit="ns">3766161</Last><br>
+    <ActiveTimers>10640</ActiveTimers><First unit="ns">6532</First><Middle unit="ns">6097</Middle><Last unit="ns">11725</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>13089</ActiveTimers><First unit="ns">3911</First><Middle unit="ns">2501427</Middle><Last unit="ns">4619553</Last><br>
+    <ActiveTimers>13089</ActiveTimers><First unit="ns">5284</First><Middle unit="ns">5392</Middle><Last unit="ns">13246</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>16101</ActiveTimers><First unit="ns">3276</First><Middle unit="ns">3189159</Middle><Last unit="ns">5886373</Last><br>
+    <ActiveTimers>16101</ActiveTimers><First unit="ns">7077</First><Middle unit="ns">7572</Middle><Last unit="ns">14820</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>19806</ActiveTimers><First unit="ns">3801</First><Middle unit="ns">4005049</Middle><Last unit="ns">7394938</Last><br>
+    <ActiveTimers>19806</ActiveTimers><First unit="ns">7132</First><Middle unit="ns">8335</Middle><Last unit="ns">11668</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>24363</ActiveTimers><First unit="ns">3088</First><Middle unit="ns">4977788</Middle><Last unit="ns">9138839</Last><br>
+    <ActiveTimers>24363</ActiveTimers><First unit="ns">8676</First><Middle unit="ns">7919</Middle><Last unit="ns">13937</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>29968</ActiveTimers><First unit="ns">4089</First><Middle unit="ns">6133462</Middle><Last unit="ns">11361012</Last><br>
+    <ActiveTimers>29968</ActiveTimers><First unit="ns">5970</First><Middle unit="ns">10978</Middle><Last unit="ns">16035</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>36862</ActiveTimers><First unit="ns">2059</First><Middle unit="ns">7870138</Middle><Last unit="ns">14319206</Last><br>
+    <ActiveTimers>36862</ActiveTimers><First unit="ns">8804</First><Middle unit="ns">8767</Middle><Last unit="ns">13089</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>45342</ActiveTimers><First unit="ns">2224</First><Middle unit="ns">9917100</Middle><Last unit="ns">17754441</Last><br>
+    <ActiveTimers>45342</ActiveTimers><First unit="ns">8608</First><Middle unit="ns">10305</Middle><Last unit="ns">15709</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>55772</ActiveTimers><First unit="ns">1979</First><Middle unit="ns">11815557</Middle><Last unit="ns">21907509</Last><br>
+    <ActiveTimers>55772</ActiveTimers><First unit="ns">8949</First><Middle unit="ns">10031</Middle><Last unit="ns">16262</Last><br>
   </Sample><br>
   <Sample><br>
-    <ActiveTimers>65503</ActiveTimers><First unit="ns">2404</First><Middle unit="ns">13694591</Middle><Last unit="ns">26215885</Last><br>
+    <ActiveTimers>65503</ActiveTimers><First unit="ns">9199</First><Middle unit="ns">10309</Middle><Last unit="ns">19090</Last><br>
   </Sample><br>
 </TMTimer01><br>
<span class="HOEnZb"><font color="#888888">--<br>
1.8.4.5<br>
<br>
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</font></span></blockquote></div><br></div>