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| author | Steven Whitehouse <swhiteho@redhat.com> | 2006-05-25 12:40:08 -0400 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-05-25 12:40:08 -0400 |
| commit | c6a756795d5ba0637aae8da89dd11bb7e3a1ee74 (patch) | |
| tree | 1c19f951f2604dbb6b867a6dcdf94d20c204cc5c /include/asm-arm/spinlock.h | |
| parent | 382066da251132f768380f4852ed5afb72d88f80 (diff) | |
| parent | a8bd60705aa17a998516837d9c1e503ad4cbd7fc (diff) | |
| download | talos-op-linux-c6a756795d5ba0637aae8da89dd11bb7e3a1ee74.tar.gz talos-op-linux-c6a756795d5ba0637aae8da89dd11bb7e3a1ee74.zip | |
Merge branch 'master'
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 */ |
