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[PATCH] hrtimer: use generic sleeper for nanosleep 

Replace the nanosleep private sleeper functionality by the generic hrtimer
sleeper.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Thomas Gleixner 2006-03-31 02:31:19 -08:00 committed by Linus Torvalds
parent 00362e33f6
commit 669d7868ae
1 changed files with 9 additions and 30 deletions
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39
kernel/hrtimer.c
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@ -655,7 +655,6 @@ void hrtimer_run_queues(void)
/*
* Sleep related functions:
*/
static int hrtimer_wakeup(struct hrtimer *timer)
{
struct hrtimer_sleeper *t =
@ -675,28 +674,9 @@ void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, task_t *task)
sl->task = task;
}
struct sleep_hrtimer {
struct hrtimer timer;
struct task_struct *task;
int expired;
};
static int nanosleep_wakeup(struct hrtimer *timer)
static int __sched do_nanosleep(struct hrtimer_sleeper *t, enum hrtimer_mode mode)
{
struct sleep_hrtimer *t =
container_of(timer, struct sleep_hrtimer, timer);
t->expired = 1;
wake_up_process(t->task);
return HRTIMER_NORESTART;
}
static int __sched do_nanosleep(struct sleep_hrtimer *t, enum hrtimer_mode mode)
{
t->timer.function = nanosleep_wakeup;
t->task = current;
t->expired = 0;
hrtimer_init_sleeper(t, current);
do {
set_current_state(TASK_INTERRUPTIBLE);
@ -704,18 +684,17 @@ static int __sched do_nanosleep(struct sleep_hrtimer *t, enum hrtimer_mode mode)
schedule();
if (unlikely(!t->expired)) {
hrtimer_cancel(&t->timer);
mode = HRTIMER_ABS;
}
} while (!t->expired && !signal_pending(current));
hrtimer_cancel(&t->timer);
mode = HRTIMER_ABS;
return t->expired;
} while (t->task && !signal_pending(current));
return t->task == NULL;
}
static long __sched nanosleep_restart(struct restart_block *restart)
{
struct sleep_hrtimer t;
struct hrtimer_sleeper t;
struct timespec __user *rmtp;
struct timespec tu;
ktime_t time;
@ -748,7 +727,7 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct timespec __user *rmtp,
const enum hrtimer_mode mode, const clockid_t clockid)
{
struct restart_block *restart;
struct sleep_hrtimer t;
struct hrtimer_sleeper t;
struct timespec tu;
ktime_t rem;