From 669d7868ae414cdb7b7e5df375dc8e4b47f26f6d Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 31 Mar 2006 02:31:19 -0800 Subject: [PATCH] hrtimer: use generic sleeper for nanosleep Replace the nanosleep private sleeper functionality by the generic hrtimer sleeper. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/hrtimer.c | 39 +++++++++------------------------------ 1 file changed, 9 insertions(+), 30 deletions(-) (limited to 'kernel') diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 877cdf9678b..49cbf7cffeb 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -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; + + } while (t->task && !signal_pending(current)); - return t->expired; + 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; -- cgit v1.2.3