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timerfd: introduce a new hrtimer_forward_now() function

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I think that advancing the timer against the timer's current "now" can be a
pretty common usage, so, w/out exposing hrtimer's internals, we add a new
hrtimer_forward_now() function.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Davide Libenzi 2008-02-04 22:27:25 -08:00 committed by Linus Torvalds
parent ed5d2cac11
commit 5e05ad7d4e
1 changed files with 7 additions and 0 deletions
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7
include/linux/hrtimer.h
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@ -304,6 +304,13 @@ static inline int hrtimer_is_queued(struct hrtimer *timer)
extern unsigned long extern unsigned long
hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval); hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval);
/* Forward a hrtimer so it expires after the hrtimer's current now */
static inline unsigned long hrtimer_forward_now(struct hrtimer *timer,
ktime_t interval)
{
return hrtimer_forward(timer, timer->base->get_time(), interval);
}
/* Precise sleep: */ /* Precise sleep: */
extern long hrtimer_nanosleep(struct timespec *rqtp, extern long hrtimer_nanosleep(struct timespec *rqtp,
struct timespec *rmtp, struct timespec *rmtp,