diff options
| author | Sage Weil <sage@newdream.net> | 2010-05-29 09:12:30 -0700 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2010-05-29 09:12:30 -0700 |
| commit | 0aa12fb439838a85802ab8b7fbb9bcfc3e6e05cb (patch) | |
| tree | c944cf9abba9a6afb3d1259140c73101d0e222a0 | |
| parent | 240ed68eb567d80dd6bab739341999a5ab0ad55d (diff) | |
sched: add wait_for_completion_killable_timeout
Add missing _killable_timeout variant for wait_for_completion that will
return when a timeout expires or the task is killed.
CC: Ingo Molnar <mingo@elte.hu>
CC: Andreas Herrmann <andreas.herrmann3@amd.com>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Sage Weil <sage@newdream.net>
| -rw-r--r-- | include/linux/completion.h | 2 | ||||
| -rw-r--r-- | kernel/sched.c | 17 |
2 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/completion.h b/include/linux/completion.h index 4a6b604ef7e..51e3145196f 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -83,6 +83,8 @@ 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 unsigned long wait_for_completion_killable_timeout( + struct completion *x, unsigned long timeout); extern bool try_wait_for_completion(struct completion *x); extern bool completion_done(struct completion *x); diff --git a/kernel/sched.c b/kernel/sched.c index 3c2a54f70ff..4d051c7517f 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -4161,6 +4161,23 @@ int __sched wait_for_completion_killable(struct completion *x) EXPORT_SYMBOL(wait_for_completion_killable); /** + * wait_for_completion_killable_timeout: - waits for completion of a task (w/(to,killable)) + * @x: holds the state of this particular completion + * @timeout: timeout value in jiffies + * + * This waits for either a completion of a specific task to be + * signaled or for a specified timeout to expire. It can be + * interrupted by a kill signal. The timeout is in jiffies. + */ +unsigned long __sched +wait_for_completion_killable_timeout(struct completion *x, + unsigned long timeout) +{ + return wait_for_common(x, timeout, TASK_KILLABLE); +} +EXPORT_SYMBOL(wait_for_completion_killable_timeout); + +/** * try_wait_for_completion - try to decrement a completion without blocking * @x: completion structure * |