diff options
Diffstat (limited to 'include/linux/completion.h')
| -rw-r--r-- | include/linux/completion.h | 46 |
1 files changed, 2 insertions, 44 deletions
diff --git a/include/linux/completion.h b/include/linux/completion.h index 57faa60de9bd..02ef8835999c 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -49,6 +49,8 @@ extern unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout); extern unsigned long wait_for_completion_interruptible_timeout( struct completion *x, unsigned long timeout); +extern bool try_wait_for_completion(struct completion *x); +extern bool completion_done(struct completion *x); extern void complete(struct completion *); extern void complete_all(struct completion *); @@ -56,48 +58,4 @@ extern void complete_all(struct completion *); #define INIT_COMPLETION(x) ((x).done = 0) -/** - * try_wait_for_completion - try to decrement a completion without blocking - * @x: completion structure - * - * Returns: 0 if a decrement cannot be done without blocking - * 1 if a decrement succeeded. - * - * If a completion is being used as a counting completion, - * attempt to decrement the counter without blocking. This - * enables us to avoid waiting if the resource the completion - * is protecting is not available. - */ -static inline bool try_wait_for_completion(struct completion *x) -{ - int ret = 1; - - spin_lock_irq(&x->wait.lock); - if (!x->done) - ret = 0; - else - x->done--; - spin_unlock_irq(&x->wait.lock); - return ret; -} - -/** - * completion_done - Test to see if a completion has any waiters - * @x: completion structure - * - * Returns: 0 if there are waiters (wait_for_completion() in progress) - * 1 if there are no waiters. - * - */ -static inline bool completion_done(struct completion *x) -{ - int ret = 1; - - spin_lock_irq(&x->wait.lock); - if (!x->done) - ret = 0; - spin_unlock_irq(&x->wait.lock); - return ret; -} - #endif |
