diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-04-01 11:19:59 -0400 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-05-27 15:58:01 -0400 |
| commit | a76ff6884bfedfafcbb0d9c84c7a6b6a546cba6d (patch) | |
| tree | aa2c9b38aeb378fc24b426c9e01ff5ec72cad349 | |
| parent | 5ce035fb7df413a72b6b956d4aa212a866f3b565 (diff) | |
powerpc: Fix smp_mb__before_spinlock()
Currently, smp_mb__before_spinlock() is defined to be smp_wmb()
in core code, but this is not sufficient on PowerPC. This patch
therefore supplies an override for the generic definition to
strengthen smp_mb__before_spinlock() to smp_mb(), as is needed
on PowerPC.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: <linuxppc-dev@lists.ozlabs.org>
| -rw-r--r-- | arch/powerpc/include/asm/barrier.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h index a3bf5be111ff..1124f59b8df4 100644 --- a/arch/powerpc/include/asm/barrier.h +++ b/arch/powerpc/include/asm/barrier.h | |||
| @@ -89,5 +89,6 @@ do { \ | |||
| 89 | 89 | ||
| 90 | #define smp_mb__before_atomic() smp_mb() | 90 | #define smp_mb__before_atomic() smp_mb() |
| 91 | #define smp_mb__after_atomic() smp_mb() | 91 | #define smp_mb__after_atomic() smp_mb() |
| 92 | #define smp_mb__before_spinlock() smp_mb() | ||
| 92 | 93 | ||
| 93 | #endif /* _ASM_POWERPC_BARRIER_H */ | 94 | #endif /* _ASM_POWERPC_BARRIER_H */ |