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| author | Paul Mackerras <paulus@samba.org> | 2006-06-01 19:05:23 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-06-01 19:05:23 +1000 |
| commit | c029cc66cb3d83f70c02e0c182f0eed1419f8020 (patch) | |
| tree | b9ed887a0e6434fedebcbf90b3d2ba1aeff68a01 /include/asm-arm/spinlock.h | |
| parent | 0a9cb46a73abd6c45e7c986bec984eed60c417b6 (diff) | |
| parent | ba8f5baba79da8eb502f8534c3a8ecb64aceb790 (diff) | |
| download | talos-op-linux-c029cc66cb3d83f70c02e0c182f0eed1419f8020.tar.gz talos-op-linux-c029cc66cb3d83f70c02e0c182f0eed1419f8020.zip | |
Merge branch 'merge'
Diffstat (limited to 'include/asm-arm/spinlock.h')
| -rw-r--r-- | include/asm-arm/spinlock.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-arm/spinlock.h b/include/asm-arm/spinlock.h index 43ad4e55878c..406ca97a8ab2 100644 --- a/include/asm-arm/spinlock.h +++ b/include/asm-arm/spinlock.h @@ -142,6 +142,9 @@ static inline void __raw_write_unlock(raw_rwlock_t *rw) : "cc"); } +/* write_can_lock - would write_trylock() succeed? */ +#define __raw_write_can_lock(x) ((x)->lock == 0x80000000) + /* * Read locks are a bit more hairy: * - Exclusively load the lock value. @@ -198,4 +201,7 @@ static inline void __raw_read_unlock(raw_rwlock_t *rw) #define __raw_read_trylock(lock) generic__raw_read_trylock(lock) +/* read_can_lock - would read_trylock() succeed? */ +#define __raw_read_can_lock(x) ((x)->lock < 0x80000000) + #endif /* __ASM_SPINLOCK_H */ |
