From bc8846c522264d2522b0082321ec8c2051a4536f Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Fri, 24 Mar 2006 21:22:02 -0700 Subject: [PATCH] [PARISC] More useful readwrite lock helpers spinlock.c needs _can_lock helpers. Rewrite _is_locked helpers to be _can_lock helpers. Signed-off-by: Kyle McMartin --- include/asm-parisc/spinlock.h | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/include/asm-parisc/spinlock.h b/include/asm-parisc/spinlock.h index 16c2ac075fc5..a93960e232cf 100644 --- a/include/asm-parisc/spinlock.h +++ b/include/asm-parisc/spinlock.h @@ -134,14 +134,22 @@ static __inline__ int __raw_write_trylock(raw_rwlock_t *rw) return 1; } -static __inline__ int __raw_is_read_locked(raw_rwlock_t *rw) +/* + * read_can_lock - would read_trylock() succeed? + * @lock: the rwlock in question. + */ +static __inline__ int __raw_read_can_lock(raw_rwlock_t *rw) { - return rw->counter > 0; + return rw->counter >= 0; } -static __inline__ int __raw_is_write_locked(raw_rwlock_t *rw) +/* + * write_can_lock - would write_trylock() succeed? + * @lock: the rwlock in question. + */ +static __inline__ int __raw_write_can_lock(raw_rwlock_t *rw) { - return rw->counter < 0; + return !rw->counter; } #endif /* __ASM_SPINLOCK_H */ -- GitLab