diff options
Diffstat (limited to 'arch/powerpc/include/asm/barrier.h')
| -rw-r--r-- | arch/powerpc/include/asm/barrier.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h index c0deafc212b8..25d42bd3f114 100644 --- a/arch/powerpc/include/asm/barrier.h +++ b/arch/powerpc/include/asm/barrier.h @@ -74,6 +74,11 @@ do { \ ___p1; \ }) +/* + * This must resolve to hwsync on SMP for the context switch path. + * See _switch, and core scheduler context switch memory ordering + * comments. + */ #define smp_mb__before_spinlock() smp_mb() #include <asm-generic/barrier.h> |