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completions: uninline try_wait_for_completion and completion_done 

m68k fails to build with these functions inlined in completion.h.  Move
them out of line into sched.c and export them to avoid this problem.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dave Chinner 2008-08-15 00:40:44 -07:00 committed by Linus Torvalds
parent e48880e02e
commit be4de35263
2 changed files with 48 additions and 44 deletions
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46
include/linux/completion.h
View File

@ -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

46
kernel/sched.c
View File

@ -4669,6 +4669,52 @@ int __sched wait_for_completion_killable(struct completion *x)
}
EXPORT_SYMBOL(wait_for_completion_killable);
/**
* 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.
*/
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;
}
EXPORT_SYMBOL(try_wait_for_completion);
/**
* 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.
*
*/
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;
}
EXPORT_SYMBOL(completion_done);
static long __sched
sleep_on_common(wait_queue_head_t *q, int state, long timeout)
{