diff options
Diffstat (limited to 'arch/powerpc/include/asm/membarrier.h')
| -rw-r--r-- | arch/powerpc/include/asm/membarrier.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/membarrier.h b/arch/powerpc/include/asm/membarrier.h index 6e20bb5c74ea..de7f79157918 100644 --- a/arch/powerpc/include/asm/membarrier.h +++ b/arch/powerpc/include/asm/membarrier.h @@ -12,7 +12,8 @@ static inline void membarrier_arch_switch_mm(struct mm_struct *prev, * when switching from userspace to kernel is not needed after * store to rq->curr. */ - if (likely(!(atomic_read(&next->membarrier_state) & + if (IS_ENABLED(CONFIG_SMP) && + likely(!(atomic_read(&next->membarrier_state) & (MEMBARRIER_STATE_PRIVATE_EXPEDITED | MEMBARRIER_STATE_GLOBAL_EXPEDITED)) || !prev)) return; |