[PATCH 5/6] smpschedaffinity05: Add test for worst case migration for affintiy scheduler.
Jennifer Averett
jennifer.averett at oarcorp.com
Fri Jul 11 14:44:46 UTC 2014
This test uses a combination of priority and affinity to cause
the tasks running on all 4 cores to change due to one task priority
change.
---
testsuites/smptests/Makefile.am | 1 +
testsuites/smptests/configure.ac | 1 +
testsuites/smptests/smpschedaffinity05/Makefile.am | 19 ++
testsuites/smptests/smpschedaffinity05/init.c | 243 +++++++++++++++++++++
.../smpschedaffinity05/smpschedaffinity05.doc | 13 ++
.../smpschedaffinity05/smpschedaffinity05.scn | 18 ++
6 files changed, 295 insertions(+)
create mode 100644 testsuites/smptests/smpschedaffinity05/Makefile.am
create mode 100644 testsuites/smptests/smpschedaffinity05/init.c
create mode 100644 testsuites/smptests/smpschedaffinity05/smpschedaffinity05.doc
create mode 100644 testsuites/smptests/smpschedaffinity05/smpschedaffinity05.scn
diff --git a/testsuites/smptests/Makefile.am b/testsuites/smptests/Makefile.am
index e025dab..29f802c 100644
--- a/testsuites/smptests/Makefile.am
+++ b/testsuites/smptests/Makefile.am
@@ -27,6 +27,7 @@ SUBDIRS += smpschedaffinity01
SUBDIRS += smpschedaffinity02
SUBDIRS += smpschedaffinity03
SUBDIRS += smpschedaffinity04
+SUBDIRS += smpschedaffinity05
SUBDIRS += smpscheduler01
SUBDIRS += smpscheduler02
SUBDIRS += smpscheduler03
diff --git a/testsuites/smptests/configure.ac b/testsuites/smptests/configure.ac
index cb8ac65..c181cbc 100644
--- a/testsuites/smptests/configure.ac
+++ b/testsuites/smptests/configure.ac
@@ -85,6 +85,7 @@ smpschedaffinity01/Makefile
smpschedaffinity02/Makefile
smpschedaffinity03/Makefile
smpschedaffinity04/Makefile
+smpschedaffinity05/Makefile
smpscheduler01/Makefile
smpscheduler02/Makefile
smpscheduler03/Makefile
diff --git a/testsuites/smptests/smpschedaffinity05/Makefile.am b/testsuites/smptests/smpschedaffinity05/Makefile.am
new file mode 100644
index 0000000..2577ba6
--- /dev/null
+++ b/testsuites/smptests/smpschedaffinity05/Makefile.am
@@ -0,0 +1,19 @@
+rtems_tests_PROGRAMS = smpschedaffinity05
+smpschedaffinity05_SOURCES = init.c
+
+dist_rtems_tests_DATA = smpschedaffinity05.scn smpschedaffinity05.doc
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+
+LINK_OBJS = $(smpschedaffinity05_OBJECTS)
+LINK_LIBS = $(smpschedaffinity05_LDLIBS)
+
+smpschedaffinity05$(EXEEXT): $(smpschedaffinity05_OBJECTS) $(smpschedaffinity05_DEPENDENCIES)
+ @rm -f smpschedaffinity05$(EXEEXT)
+ $(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/smptests/smpschedaffinity05/init.c b/testsuites/smptests/smpschedaffinity05/init.c
new file mode 100644
index 0000000..754c226
--- /dev/null
+++ b/testsuites/smptests/smpschedaffinity05/init.c
@@ -0,0 +1,243 @@
+/*
+ * COPYRIGHT (c) 2014.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+/*
+ * Start 4 tasks with affinity for each of the 4 cpus.
+ * Allow tasks to set their actual cpu value and delete themselves.
+ * Verify the actual cpu values match the expected cpu values.
+ *
+ * Init task is at a lower priority 8 and the threads
+ * with affinity are at priority 4, so the affinity task
+ * on the core init is running on will preempt it.
+ *
+ * Test tasks run and delete themselves.
+ * Init task never blocks.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <rtems.h>
+
+#include "tmacros.h"
+
+const char rtems_test_name[] = "SMPSCHEDAFFINITY 5";
+
+#define NUM_CPUS 4
+#define TASK_COUNT 5
+
+struct task_data_t {
+ rtems_id id;
+ cpu_set_t cpuset;
+ rtems_task_priority priority;
+ bool ran;
+ int expected_cpu;
+ int actual_cpu;
+ int migrate_cpu;
+};
+
+static struct task_data_t task_data[TASK_COUNT] = {
+ {0x0, {{0xc}}, 7, false, 3, -1, 2},
+ {0x0, {{0xf}}, 8, false, 2, -1, -1},
+ {0x0, {{0x3}}, 5, false, 1, -1, 0},
+ {0x0, {{0x9}}, 6, false, 0, -1, 3},
+ {0x0, {{0x2}}, 9, false, -1, -1, 1}
+};
+
+rtems_id task_sem;
+
+static void verify_tasks(void);
+
+/*
+ * Spin loop to allow tasks to delay without yeilding the
+ * processor.
+ */
+static void test_delay(int ticks)
+{
+ rtems_interval start, stop;
+ start = rtems_clock_get_ticks_since_boot();
+ do {
+ stop = rtems_clock_get_ticks_since_boot();
+ } while ( (stop - start) < ticks );
+}
+
+static void task(rtems_task_argument arg)
+{
+ rtems_status_code sc;
+
+ while (true) {
+ sc = rtems_semaphore_obtain (task_sem, RTEMS_NO_WAIT, 0);
+ if (sc == RTEMS_SUCCESSFUL) {
+ task_data[arg].ran = true;
+ task_data[arg].actual_cpu = rtems_get_current_processor();
+ rtems_semaphore_release(task_sem);
+ }
+ }
+}
+static void verify_tasks(void)
+{
+ int i;
+
+ printf("Verify Tasks Ran\n");
+
+ while( rtems_semaphore_obtain (task_sem, RTEMS_NO_WAIT, 0) != RTEMS_SUCCESSFUL );
+
+ /* Set Init task data */
+ task_data[0].ran = true;
+ task_data[0].actual_cpu = rtems_get_current_processor();
+
+ /* Verify all tasks */
+ for (i = 0; i < NUM_CPUS; i++) {
+ if (i==0)
+ printf("Init(%d): ran=%d expected=%d actual=%d\n",
+ task_data[i].priority,
+ task_data[i].ran,
+ task_data[i].expected_cpu,
+ task_data[i].actual_cpu
+ );
+ else
+ printf( "TA0%d(%d): ran=%d expected=%d actual=%d\n",
+ i,
+ task_data[i].priority,
+ task_data[i].ran,
+ task_data[i].expected_cpu,
+ task_data[i].actual_cpu
+ );
+
+ /* Abort test if values are not as expected */
+ if ( task_data[i].expected_cpu == -1 )
+ rtems_test_assert( task_data[i].ran == false );
+ else {
+ rtems_test_assert( task_data[i].ran == true );
+ rtems_test_assert( task_data[i].expected_cpu == task_data[i].actual_cpu );
+ }
+ }
+
+ rtems_semaphore_release(task_sem);
+}
+
+static void test(void)
+{
+ rtems_status_code sc;
+ rtems_task_argument i;
+ size_t size;
+ uint32_t cpu_count;
+ rtems_task_priority priority;
+
+ /* Get the number of processors that we are using. */
+ cpu_count = rtems_get_processor_count();
+ if (cpu_count != 4) {
+ printf("Test requires a minimum of 4 cores\n");
+ return;
+ }
+
+ size = sizeof(cpu_set_t);
+ task_data[0].id = rtems_task_self();
+ printf("Create Semaphore\n");
+
+ sc = rtems_semaphore_create(
+ rtems_build_name('S', 'E', 'M', '0'),
+ 1, /* initial count = 1 */
+ RTEMS_LOCAL |
+ RTEMS_SIMPLE_BINARY_SEMAPHORE |
+ RTEMS_NO_INHERIT_PRIORITY |
+ RTEMS_NO_PRIORITY_CEILING |
+ RTEMS_FIFO,
+ 0,
+ &task_sem
+ );
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+
+ /* Create and start tasks on each cpu with the appropriate affinity. */
+ for (i = 1; i < TASK_COUNT; i++) {
+
+ sc = rtems_task_create(
+ rtems_build_name('T', 'A', '0', '0'+i),
+ task_data[ i ].priority,
+ RTEMS_MINIMUM_STACK_SIZE,
+ RTEMS_DEFAULT_MODES,
+ RTEMS_DEFAULT_ATTRIBUTES,
+ &task_data[ i ].id
+ );
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+ sc = rtems_task_set_affinity(
+ task_data[ i ].id,
+ size,
+ &task_data[i].cpuset
+ );
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+ printf(
+ "Start TA%d at priority %d on cpu %d\n",
+ i,
+ task_data[i].priority,
+ task_data[i].expected_cpu
+ );
+ sc = rtems_task_start( task_data[ i ].id, task, i );
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+ }
+
+ /* spin for 100 ticks */
+ test_delay(100);
+
+ verify_tasks();
+
+ i = TASK_COUNT - 1;
+ task_data[ i ].priority = 4;
+ printf("Set TA%d priority %d\n", i,task_data[i].priority );
+ sc = rtems_task_set_priority(
+ task_data[ i ].id,
+ task_data[ i ].priority,
+ &priority
+ );
+ test_delay(25);
+
+ while( rtems_semaphore_obtain (task_sem, RTEMS_NO_WAIT, 0) != RTEMS_SUCCESSFUL );
+ for (i = 0; i < TASK_COUNT; i++) {
+ task_data[ i ].expected_cpu = task_data[ i ].migrate_cpu;
+ task_data[ i ].actual_cpu = -1;
+ task_data[ i ].ran = false;
+ }
+ rtems_semaphore_release(task_sem);
+ test_delay(25);
+ verify_tasks();
+}
+
+static void Init(rtems_task_argument arg)
+{
+ TEST_BEGIN();
+
+ test();
+
+ TEST_END();
+ rtems_test_exit(0);
+}
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_SMP_APPLICATION
+
+#define CONFIGURE_SCHEDULER_PRIORITY_AFFINITY_SMP
+
+#define CONFIGURE_SMP_MAXIMUM_PROCESSORS NUM_CPUS
+
+#define CONFIGURE_MAXIMUM_TASKS TASK_COUNT
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_INIT_TASK_PRIORITY 7
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
diff --git a/testsuites/smptests/smpschedaffinity05/smpschedaffinity05.doc b/testsuites/smptests/smpschedaffinity05/smpschedaffinity05.doc
new file mode 100644
index 0000000..4fb0205
--- /dev/null
+++ b/testsuites/smptests/smpschedaffinity05/smpschedaffinity05.doc
@@ -0,0 +1,13 @@
+This file describes the directives and concepts tested by this test set.
+
+test set name: smpschedaffinity05
+
+directives:
+
+ - _Scheduler_priority_affinity_xxx
+
+concepts:
+
+ - Ensure that worst case migration of tasks across 4 cores using
+ a combination of affinity and priority. Ensure the highest
+ priority tasks are chosen to run on the correct cores.
diff --git a/testsuites/smptests/smpschedaffinity05/smpschedaffinity05.scn b/testsuites/smptests/smpschedaffinity05/smpschedaffinity05.scn
new file mode 100644
index 0000000..83107e7
--- /dev/null
+++ b/testsuites/smptests/smpschedaffinity05/smpschedaffinity05.scn
@@ -0,0 +1,18 @@
+*** BEGIN OF TEST SMPSCHEDAFFINITY 5 ***
+Create Semaphore
+Start TA1 at priority 8 on cpu 2
+Start TA2 at priority 5 on cpu 1
+Start TA3 at priority 6 on cpu 0
+Start TA4 at priority 9 on cpu -1
+Verify Tasks Ran
+Init(7): ran=1 expected=3 actual=3
+TA01(8): ran=1 expected=2 actual=2
+TA02(5): ran=1 expected=1 actual=1
+TA03(6): ran=1 expected=0 actual=0
+Set TA4 priority 4
+Verify Tasks Ran
+Init(7): ran=1 expected=2 actual=2
+TA01(8): ran=0 expected=-1 actual=-1
+TA02(5): ran=1 expected=0 actual=0
+TA03(6): ran=1 expected=3 actual=3
+*** END OF TEST SMPSCHEDAFFINITY 5 ***
--
1.8.1.4
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