diff options
| author | Anton Blanchard <anton@samba.org> | 2010-02-10 02:04:06 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-02-17 04:03:15 +0100 |
| commit | f10e2e5b4b4c9937de596f96ffe028be3a565598 (patch) | |
| tree | 89808d05159ac5bd4aeea53b52dc0ddb3373fe65 /arch/powerpc/include/asm/mutex.h | |
| parent | powerpc: Convert open coded native hashtable bit lock (diff) | |
| download | linux-f10e2e5b4b4c9937de596f96ffe028be3a565598.tar.xz linux-f10e2e5b4b4c9937de596f96ffe028be3a565598.zip | |
powerpc: Rename LWSYNC_ON_SMP to PPC_RELEASE_BARRIER, ISYNC_ON_SMP to PPC_ACQUIRE_BARRIER
For performance reasons we are about to change ISYNC_ON_SMP to sometimes be
lwsync. Now that the macro name doesn't make sense, change it and LWSYNC_ON_SMP
to better explain what the barriers are doing.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/mutex.h')
| -rw-r--r-- | arch/powerpc/include/asm/mutex.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/mutex.h b/arch/powerpc/include/asm/mutex.h index dabc01c727b8..5399f7e18102 100644 --- a/arch/powerpc/include/asm/mutex.h +++ b/arch/powerpc/include/asm/mutex.h @@ -15,7 +15,7 @@ static inline int __mutex_cmpxchg_lock(atomic_t *v, int old, int new) PPC405_ERR77(0,%1) " stwcx. %3,0,%1\n\ bne- 1b" - ISYNC_ON_SMP + PPC_ACQUIRE_BARRIER "\n\ 2:" : "=&r" (t) @@ -35,7 +35,7 @@ static inline int __mutex_dec_return_lock(atomic_t *v) PPC405_ERR77(0,%1) " stwcx. %0,0,%1\n\ bne- 1b" - ISYNC_ON_SMP + PPC_ACQUIRE_BARRIER : "=&r" (t) : "r" (&v->counter) : "cc", "memory"); @@ -48,7 +48,7 @@ static inline int __mutex_inc_return_unlock(atomic_t *v) int t; __asm__ __volatile__( - LWSYNC_ON_SMP + PPC_RELEASE_BARRIER "1: lwarx %0,0,%1 # mutex unlock\n\ addic %0,%0,1\n" PPC405_ERR77(0,%1) |