cregit-Linux how code gets into the kernel

Release 4.12 include/linux/completion.h

Directory: include/linux


 * (C) Copyright 2001 Linus Torvalds
 * Atomic wait-for-completion handler data structures.
 * See kernel/sched/completion.c for details.

#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(),
 * reinit_completion(), and macros DECLARE_COMPLETION(),

struct completion {
unsigned int done;
wait_queue_head_t wait;

	{ 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) }

	({ 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)

 * Lockdep needs to run a non-constant initializer for on-stack
 * 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.

	struct completion work = COMPLETION_INITIALIZER_ONSTACK(work)


 * init_completion - Initialize a dynamically allocated completion
 * @x:  pointer to 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; init_waitqueue_head(&x->wait); }


Linus Torvalds2596.15%150.00%
Wolfram Sang13.85%150.00%

/** * 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; }


Wolfram Sang1794.44%150.00%
Linus Torvalds15.56%150.00%

extern void wait_for_completion(struct completion *); extern void wait_for_completion_io(struct completion *); extern int wait_for_completion_interruptible(struct completion *x); extern int wait_for_completion_killable(struct completion *x); extern unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout); extern unsigned long wait_for_completion_io_timeout(struct completion *x, unsigned long timeout); extern long wait_for_completion_interruptible_timeout( struct completion *x, unsigned long timeout); extern 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); extern void complete(struct completion *); extern void complete_all(struct completion *); #endif

Overall Contributors

Ingo Molnar8935.04%538.46%
Linus Torvalds7328.74%17.69%
Vladimir Davydov249.45%17.69%
Wolfram Sang218.27%17.69%
David Chinner207.87%17.69%
Sage Weil145.51%17.69%
Matthew Wilcox103.94%17.69%
Randy Dunlap20.79%17.69%
Peter Zijlstra10.39%17.69%
Directory: include/linux
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