diff options
author | Wolfram Sang <wsa@the-dreams.de> | 2013-11-14 14:32:01 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-15 09:32:21 +0900 |
commit | c32f74ab2872994bc8336ed367313da3139350ca (patch) | |
tree | 447daece4f5eac46f8af3a5df7d407dcbc011c34 /include/linux/completion.h | |
parent | 406bf31893163cbe5b0b03a281685c7dc95c9380 (diff) | |
download | linux-stable-c32f74ab2872994bc8336ed367313da3139350ca.tar.gz linux-stable-c32f74ab2872994bc8336ed367313da3139350ca.tar.bz2 linux-stable-c32f74ab2872994bc8336ed367313da3139350ca.zip |
sched: replace INIT_COMPLETION with reinit_completion
For the casual device driver writer, it is hard to remember when to use
init_completion (to init a completion structure) or INIT_COMPLETION (to
*reinit* a completion structure). Furthermore, while all other
completion functions exepct a pointer as a parameter, INIT_COMPLETION
does not. To make it easier to remember which function to use and to
make code more readable, introduce a new inline function with the proper
name and consistent argument type. Update the kernel-doc for
init_completion while we are here.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13)
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/completion.h')
-rw-r--r-- | include/linux/completion.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/include/linux/completion.h b/include/linux/completion.h index 22c33e35bcb2..124e4b4334c1 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -19,8 +19,8 @@ * * See also: complete(), wait_for_completion() (and friends _timeout, * _interruptible, _interruptible_timeout, and _killable), init_completion(), - * and macros DECLARE_COMPLETION(), DECLARE_COMPLETION_ONSTACK(), and - * INIT_COMPLETION(). + * reinit_completion(), and macros DECLARE_COMPLETION(), + * DECLARE_COMPLETION_ONSTACK(). */ struct completion { unsigned int done; @@ -65,7 +65,7 @@ struct completion { /** * init_completion - Initialize a dynamically allocated completion - * @x: completion structure that is to be initialized + * @x: pointer to completion structure that is to be initialized * * This inline function will initialize a dynamically created completion * structure. @@ -76,6 +76,18 @@ static inline void init_completion(struct completion *x) init_waitqueue_head(&x->wait); } +/** + * reinit_completion - reinitialize a completion structure + * @x: pointer to completion structure that is to be reinitialized + * + * This inline function should be used to reinitialize a completion structure so it can + * be reused. This is especially important after complete_all() is used. + */ +static inline void reinit_completion(struct completion *x) +{ + x->done = 0; +} + extern void wait_for_completion(struct completion *); extern void wait_for_completion_io(struct completion *); extern int wait_for_completion_interruptible(struct completion *x); |