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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-04-01 15:19:59 (GMT) |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-05-27 19:58:01 (GMT) |
| commit | a76ff6884bfedfafcbb0d9c84c7a6b6a546cba6d (patch) | |
| tree | aa2c9b38aeb378fc24b426c9e01ff5ec72cad349 /arch/powerpc/include/asm | |
| parent | 5ce035fb7df413a72b6b956d4aa212a866f3b565 (diff) | |
| download | linux-a76ff6884bfedfafcbb0d9c84c7a6b6a546cba6d.tar.xz | |
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>
Diffstat (limited to 'arch/powerpc/include/asm')
| -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 a3bf5be..1124f59 100644 --- a/arch/powerpc/include/asm/barrier.h +++ b/arch/powerpc/include/asm/barrier.h @@ -89,5 +89,6 @@ do { \ #define smp_mb__before_atomic() smp_mb() #define smp_mb__after_atomic() smp_mb() +#define smp_mb__before_spinlock() smp_mb() #endif /* _ASM_POWERPC_BARRIER_H */ |