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author | Kevin Diggs <kevdig@hypersurf.com> | 2008-08-26 10:26:54 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-08-26 10:26:54 +0200 |
commit | 65eb3dc609dec17deea48dcd4de2e549d29a9824 (patch) | |
tree | e54f0c7f05c7d503c9c3f3bb4c234623f02638f4 /include/linux/completion.h | |
parent | 3cf430b0636045dc524759a0852293ba037732a7 (diff) | |
download | linux-stable-65eb3dc609dec17deea48dcd4de2e549d29a9824.tar.gz linux-stable-65eb3dc609dec17deea48dcd4de2e549d29a9824.tar.bz2 linux-stable-65eb3dc609dec17deea48dcd4de2e549d29a9824.zip |
sched: add kernel doc for the completion, fix kernel-doc-nano-HOWTO.txt
This patch adds kernel doc for the completion feature.
An error in the split-man.pl PERL snippet in kernel-doc-nano-HOWTO.txt is
also fixed.
Signed-off-by: Kevin Diggs <kevdig@hypersurf.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/completion.h')
-rw-r--r-- | include/linux/completion.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/linux/completion.h b/include/linux/completion.h index 02ef8835999c..4a6b604ef7e4 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -10,6 +10,18 @@ #include <linux/wait.h> +/** + * struct completion - structure used to maintain state for a "completion" + * + * This is the opaque structure used to maintain the state for a "completion". + * Completions currently use a FIFO to queue threads that have to wait for + * the "completion" event. + * + * 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(). + */ struct completion { unsigned int done; wait_queue_head_t wait; @@ -21,6 +33,14 @@ struct completion { #define COMPLETION_INITIALIZER_ONSTACK(work) \ ({ init_completion(&work); work; }) +/** + * DECLARE_COMPLETION: - declare and initialize a completion structure + * @work: identifier for the completion structure + * + * This macro declares and initializes a completion structure. Generally used + * for static declarations. You should use the _ONSTACK variant for automatic + * variables. + */ #define DECLARE_COMPLETION(work) \ struct completion work = COMPLETION_INITIALIZER(work) @@ -29,6 +49,13 @@ struct completion { * completions - so we use the _ONSTACK() variant for those that * are on the kernel stack: */ +/** + * DECLARE_COMPLETION_ONSTACK: - declare and initialize a completion structure + * @work: identifier for the completion structure + * + * This macro declares and initializes a completion structure on the kernel + * stack. + */ #ifdef CONFIG_LOCKDEP # define DECLARE_COMPLETION_ONSTACK(work) \ struct completion work = COMPLETION_INITIALIZER_ONSTACK(work) @@ -36,6 +63,13 @@ struct completion { # define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work) #endif +/** + * init_completion: - Initialize a dynamically allocated completion + * @x: completion structure that is to be initialized + * + * This inline function will initialize a dynamically created completion + * structure. + */ static inline void init_completion(struct completion *x) { x->done = 0; @@ -55,6 +89,13 @@ extern bool completion_done(struct completion *x); extern void complete(struct completion *); extern void complete_all(struct completion *); +/** + * INIT_COMPLETION: - reinitialize a completion structure + * @x: completion structure to be reinitialized + * + * This macro should be used to reinitialize a completion structure so it can + * be reused. This is especially important after complete_all() is used. + */ #define INIT_COMPLETION(x) ((x).done = 0) |