[PATCH 01/23] sapi: Use rtems_config*_get_microseconds_per_tick

[Sebastian Huber]

On 11/06/2012 04:25 PM, Gedare Bloom wrote:
> Can you provide some background on this patch series?

Most of them are simple clean-ups.  The important (and potentially 
controversial) change is the last one:

The Configuration is now read-only and must be statically initialized
via confdefs.h or similar.
---
  cpukit/sapi/include/confdefs.h     |    2 +-
  cpukit/sapi/include/rtems/config.h |    2 +-
  2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpukit/sapi/include/confdefs.h b/cpukit/sapi/include/confdefs.h
index 17cb2ee..00ba59b 100644
--- a/cpukit/sapi/include/confdefs.h
+++ b/cpukit/sapi/include/confdefs.h
@@ -2316,7 +2316,7 @@ rtems_fs_init_functions_t    rtems_fs_init_helper =
    /**
     *  This is the primary Configuration Table for this application.
     */
-  rtems_configuration_table Configuration = {
+  const rtems_configuration_table Configuration = {
      CONFIGURE_EXECUTIVE_RAM_SIZE,             /* required RTEMS workspace */
      CONFIGURE_STACK_SPACE_SIZE,               /* required stack space */
      CONFIGURE_MAXIMUM_USER_EXTENSIONS,        /* maximum dynamic extensions */
diff --git a/cpukit/sapi/include/rtems/config.h 
b/cpukit/sapi/include/rtems/config.h
index 55b7bda..ed869ec 100644
--- a/cpukit/sapi/include/rtems/config.h
+++ b/cpukit/sapi/include/rtems/config.h
@@ -222,7 +222,7 @@ typedef struct {
  /**
   *   This is the configuration table generated by confdefs.h.
   */
-extern rtems_configuration_table  Configuration;
+extern const rtems_configuration_table Configuration;

  #if defined(RTEMS_MULTIPROCESSING)
    /**

My aim is to make it possible to call _Internal_error_Occurred() in every (!) 
system state provided the read-only data is write protected.  Since the initial 
extensions are part of the Configuration this change is the first step.  It is 
also beneficial for targets with a small internal RAM.

-- 
Sebastian Huber, embedded brains GmbH

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E-Mail  : sebastian.huber at embedded-brains.de
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