diff options
Diffstat (limited to 'include/asm-generic/barrier.h')
| -rw-r--r-- | include/asm-generic/barrier.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-generic/barrier.h b/include/asm-generic/barrier.h index 961f4d88f9..1985c22d90 100644 --- a/include/asm-generic/barrier.h +++ b/include/asm-generic/barrier.h @@ -296,5 +296,13 @@ do { \ #define io_stop_wc() do { } while (0) #endif +/* + * Architectures that guarantee an implicit smp_mb() in switch_mm() + * can override smp_mb__after_switch_mm. + */ +#ifndef smp_mb__after_switch_mm +# define smp_mb__after_switch_mm() smp_mb() +#endif + #endif /* !__ASSEMBLY__ */ #endif /* __ASM_GENERIC_BARRIER_H */ |