|author||Sebastian Huber <firstname.lastname@example.org>||2014-06-24 09:31:14 +0200|
|committer||Sebastian Huber <email@example.com>||2014-06-24 09:31:14 +0200|
score: Fix _Thread_Start_multitasking() on SMP
The _CPU_Context_Restart_self() implementations usually assume that self context is executing. FIXME: We have a race condition in _Thread_Start_multitasking() in case another thread already performed scheduler operations and moved the heir thread to another processor. The time frame for this is likely too small to be practically relevant.
1 files changed, 13 insertions, 0 deletions
diff --git a/cpukit/score/src/threadstartmultitasking.c b/cpukit/score/src/threadstartmultitasking.c
index c1c8725eae..4467937c58 100644
@@ -61,6 +61,19 @@ void _Thread_Start_multitasking( void )
_Profiling_Thread_dispatch_disable( cpu_self, 0 );
+ * The _CPU_Context_Restart_self() implementations usually assume that self
+ * context is executing.
+ * FIXME: We have a race condition here in case another thread already
+ * performed scheduler operations and moved our heir thread to another
+ * processor. The time frame for this is likely too small to be practically
+ * relevant.
+ _CPU_Context_Set_is_executing( &heir->Registers, true );
_CPU_Start_multitasking( &heir->Registers );