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workqueue: kill run_scheduled_work()

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Because it has no callers.

Actually, I think the whole idea of run_scheduled_work() was not right, not
good to mix "unqueue this work and execute its ->func()" in one function.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
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:
Oleg Nesterov 2007-05-09 02:34:10 -07:00 committed by Linus Torvalds
parent 3af24433ef
commit 7097a87afe
2 changed files with 0 additions and 74 deletions
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1
include/linux/workqueue.h
View File

@ -182,7 +182,6 @@ extern void flush_work(struct workqueue_struct *wq, struct work_struct *work);
extern void flush_work_keventd(struct work_struct *work); extern void flush_work_keventd(struct work_struct *work);
extern int FASTCALL(schedule_work(struct work_struct *work)); extern int FASTCALL(schedule_work(struct work_struct *work));
extern int FASTCALL(run_scheduled_work(struct work_struct *work));
extern int FASTCALL(schedule_delayed_work(struct delayed_work *work, unsigned long delay)); extern int FASTCALL(schedule_delayed_work(struct delayed_work *work, unsigned long delay));
extern int schedule_delayed_work_on(int cpu, struct delayed_work *work, unsigned long delay); extern int schedule_delayed_work_on(int cpu, struct delayed_work *work, unsigned long delay);

73
kernel/workqueue.c
View File

@ -98,79 +98,6 @@ static inline void *get_wq_data(struct work_struct *work)
return (void *) (atomic_long_read(&work->data) & WORK_STRUCT_WQ_DATA_MASK); return (void *) (atomic_long_read(&work->data) & WORK_STRUCT_WQ_DATA_MASK);
} }
static int __run_work(struct cpu_workqueue_struct *cwq, struct work_struct *work)
{
int ret = 0;
unsigned long flags;
spin_lock_irqsave(&cwq->lock, flags);
/*
* We need to re-validate the work info after we've gotten
* the cpu_workqueue lock. We can run the work now iff:
*
* - the wq_data still matches the cpu_workqueue_struct
* - AND the work is still marked pending
* - AND the work is still on a list (which will be this
* workqueue_struct list)
*
* All these conditions are important, because we
* need to protect against the work being run right
* now on another CPU (all but the last one might be
* true if it's currently running and has not been
* released yet, for example).
*/
if (get_wq_data(work) == cwq
&& work_pending(work)
&& !list_empty(&work->entry)) {
work_func_t f = work->func;
cwq->current_work = work;
list_del_init(&work->entry);
spin_unlock_irqrestore(&cwq->lock, flags);
if (!test_bit(WORK_STRUCT_NOAUTOREL, work_data_bits(work)))
work_release(work);
f(work);
spin_lock_irqsave(&cwq->lock, flags);
cwq->current_work = NULL;
ret = 1;
}
spin_unlock_irqrestore(&cwq->lock, flags);
return ret;
}
/**
* run_scheduled_work - run scheduled work synchronously
* @work: work to run
*
* This checks if the work was pending, and runs it
* synchronously if so. It returns a boolean to indicate
* whether it had any scheduled work to run or not.
*
* NOTE! This _only_ works for normal work_structs. You
* CANNOT use this for delayed work, because the wq data
* for delayed work will not point properly to the per-
* CPU workqueue struct, but will change!
*/
int fastcall run_scheduled_work(struct work_struct *work)
{
for (;;) {
struct cpu_workqueue_struct *cwq;
if (!work_pending(work))
return 0;
if (list_empty(&work->entry))
return 0;
/* NOTE! This depends intimately on __queue_work! */
cwq = get_wq_data(work);
if (!cwq)
return 0;
if (__run_work(cwq, work))
return 1;
}
}
EXPORT_SYMBOL(run_scheduled_work);
static void insert_work(struct cpu_workqueue_struct *cwq, static void insert_work(struct cpu_workqueue_struct *cwq,
struct work_struct *work, int tail) struct work_struct *work, int tail)
{ {