diff options
| author | Jens Axboe <axboe@kernel.dk> | 2011-10-19 14:30:42 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2011-10-19 14:30:42 +0200 |
| commit | 5c04b426f2e8b46cfc7969a35b2631063a3c646c (patch) | |
| tree | 2d27d9f5d2fe5d5e8fbc01a467ec58bcb50235c1 /arch/sparc/include/asm/spinlock_32.h | |
| parent | 499337bb6511e665a236a6a947f819d98ea340c6 (diff) | |
| parent | 899e3ee404961a90b828ad527573aaaac39f0ab1 (diff) | |
Merge branch 'v3.1-rc10' into for-3.2/core
Conflicts:
block/blk-core.c
include/linux/blkdev.h
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'arch/sparc/include/asm/spinlock_32.h')
| -rw-r--r-- | arch/sparc/include/asm/spinlock_32.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/sparc/include/asm/spinlock_32.h b/arch/sparc/include/asm/spinlock_32.h index 5f5b8bf3f50..bcc98fc3528 100644 --- a/arch/sparc/include/asm/spinlock_32.h +++ b/arch/sparc/include/asm/spinlock_32.h @@ -131,6 +131,15 @@ static inline void arch_write_lock(arch_rwlock_t *rw) *(volatile __u32 *)&lp->lock = ~0U; } +static void inline arch_write_unlock(arch_rwlock_t *lock) +{ + __asm__ __volatile__( +" st %%g0, [%0]" + : /* no outputs */ + : "r" (lock) + : "memory"); +} + static inline int arch_write_trylock(arch_rwlock_t *rw) { unsigned int val; @@ -175,8 +184,6 @@ static inline int __arch_read_trylock(arch_rwlock_t *rw) res; \ }) -#define arch_write_unlock(rw) do { (rw)->lock = 0; } while(0) - #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) #define arch_read_lock_flags(rw, flags) arch_read_lock(rw) #define arch_write_lock_flags(rw, flags) arch_write_lock(rw) |