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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-11-10 12:02:28 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-11-23 12:52:06 +0100 |
| commit | 84e6f15c828869eb7d293096cfcfa0563b5752b3 (patch) | |
| tree | efafb1ab17f6d1a612f79b6ec8d821ad9123756c /cpukit/score/cpu/arm/rtems | |
| parent | smptests/smplock01: Test TAS and TTAS locks (diff) | |
| download | rtems-84e6f15c828869eb7d293096cfcfa0563b5752b3.tar.bz2 | |
score: Robust thread dispatch
On SMP configurations, it is a fatal error to call blocking operating
system with interrupts disabled, since this prevents delivery of
inter-processor interrupts. This could lead to executing threads which
are not allowed to execute resulting in undefined behaviour.
The ARM Cortex-M port has a similar problem, since the interrupt state
is not a part of the thread context.
Update #2811.
Diffstat (limited to 'cpukit/score/cpu/arm/rtems')
| -rw-r--r-- | cpukit/score/cpu/arm/rtems/score/cpu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/cpukit/score/cpu/arm/rtems/score/cpu.h b/cpukit/score/cpu/arm/rtems/score/cpu.h index df3034134c..df946798f7 100644 --- a/cpukit/score/cpu/arm/rtems/score/cpu.h +++ b/cpukit/score/cpu/arm/rtems/score/cpu.h @@ -130,6 +130,12 @@ #define CPU_USE_DEFERRED_FP_SWITCH FALSE +#if defined(ARM_MULTILIB_ARCH_V7M) + #define CPU_ENABLE_ROBUST_THREAD_DISPATCH TRUE +#else + #define CPU_ENABLE_ROBUST_THREAD_DISPATCH FALSE +#endif + #if defined(ARM_MULTILIB_HAS_WFI) #define CPU_PROVIDES_IDLE_THREAD_BODY TRUE #else |