From 05e82bd76b057bf60f8590c5226561538ba9057e Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Thu, 18 Jul 2013 11:53:48 +0200
Subject: score: Error for non-preemptible tasks on SMP

A common use case for disabled preemption was to ensure mutual exclusion
on single-processor configurations.  On SMP this does not work.

To abandon non-preemptible tasks simplifies the scheduler.
---
 cpukit/score/src/threadinitialize.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'cpukit/score/src/threadinitialize.c')

diff --git a/cpukit/score/src/threadinitialize.c b/cpukit/score/src/threadinitialize.c
index 4c40ae87b8..cc74573def 100644
--- a/cpukit/score/src/threadinitialize.c
+++ b/cpukit/score/src/threadinitialize.c
@@ -18,6 +18,7 @@
 #endif
 
 #include <rtems/system.h>
+#include <rtems/config.h>
 #include <rtems/score/apiext.h>
 #include <rtems/score/context.h>
 #include <rtems/score/interr.h>
@@ -57,6 +58,12 @@ bool _Thread_Initialize(
   bool                 extension_status;
   int                  i;
 
+#if defined( RTEMS_SMP )
+  if ( rtems_configuration_is_smp_enabled() && !is_preemptible ) {
+    return false;
+  }
+#endif
+
   /*
    *  Initialize the Ada self pointer
    */
-- 
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