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authorSebastian Huber <sebastian.huber@embedded-brains.de>2013-06-12 09:16:30 +0200
committerSebastian Huber <sebastian.huber@embedded-brains.de>2013-06-12 16:12:53 +0200
commitdf244cfc300029d943a5c54b22d28b85c38d2ae0 (patch)
tree6084cb7604302c9aa23b0d0136d472b667dfc426 /cpukit/score/src
parentsmp: Add and use _Per_CPU_Lock_acquire() (diff)
downloadrtems-df244cfc300029d943a5c54b22d28b85c38d2ae0.tar.bz2
smp: Protect decrement operation
Diffstat (limited to 'cpukit/score/src')
-rw-r--r--cpukit/score/src/threaddispatchdisablelevel.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/cpukit/score/src/threaddispatchdisablelevel.c b/cpukit/score/src/threaddispatchdisablelevel.c
index ee1bfebe67..4686795bbb 100644
--- a/cpukit/score/src/threaddispatchdisablelevel.c
+++ b/cpukit/score/src/threaddispatchdisablelevel.c
@@ -88,16 +88,16 @@ uint32_t _Thread_Dispatch_decrement_disable_level( void )
_ISR_Disable_on_this_core( isr_level );
+ disable_level = _Thread_Dispatch_disable_level;
+ --disable_level;
+ _Thread_Dispatch_disable_level = disable_level;
+
--level_lock->nest_level;
if ( level_lock->nest_level == 0 ) {
level_lock->owner_cpu = NO_OWNER_CPU;
_SMP_lock_Release( &level_lock->lock );
}
- disable_level = _Thread_Dispatch_disable_level;
- --disable_level;
- _Thread_Dispatch_disable_level = disable_level;
-
_ISR_Enable_on_this_core( isr_level );
return disable_level;