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author | Roman Zippel <zippel@linux-m68k.org> | 2006-03-26 01:38:07 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-26 08:57:02 -0800 |
commit | 3b98a5328171cebc867f70484b20bd34948cd7f6 (patch) | |
tree | 11510d45aec22c742baf6b67233dc1ebdfa17ee1 /kernel | |
parent | 44f21475511bbc0135b52c66ad74dcc6a9026da3 (diff) | |
download | kernel_samsung_smdk4412-3b98a5328171cebc867f70484b20bd34948cd7f6.zip kernel_samsung_smdk4412-3b98a5328171cebc867f70484b20bd34948cd7f6.tar.gz kernel_samsung_smdk4412-3b98a5328171cebc867f70484b20bd34948cd7f6.tar.bz2 |
[PATCH] hrtimers: posix-timer: cleanup common_timer_get()
Cleanup common_timer_get() a little.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/posix-timers.c | 50 |
1 files changed, 26 insertions, 24 deletions
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c index 255657a..7c5f447 100644 --- a/kernel/posix-timers.c +++ b/kernel/posix-timers.c @@ -608,39 +608,41 @@ static struct k_itimer * lock_timer(timer_t timer_id, unsigned long *flags) static void common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting) { - ktime_t remaining; + ktime_t now, remaining, iv; struct hrtimer *timer = &timr->it.real.timer; memset(cur_setting, 0, sizeof(struct itimerspec)); - remaining = hrtimer_get_remaining(timer); - /* Time left ? or timer pending */ - if (remaining.tv64 > 0 || hrtimer_active(timer)) - goto calci; + iv = timr->it.real.interval; + /* interval timer ? */ - if (timr->it.real.interval.tv64 == 0) + if (iv.tv64) + cur_setting->it_interval = ktime_to_timespec(iv); + else if (!hrtimer_active(timer) && + (timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) return; + + now = timer->base->get_time(); + /* - * When a requeue is pending or this is a SIGEV_NONE timer - * move the expiry time forward by intervals, so expiry is > - * now. + * When a requeue is pending or this is a SIGEV_NONE + * timer move the expiry time forward by intervals, so + * expiry is > now. */ - if (timr->it_requeue_pending & REQUEUE_PENDING || - (timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE) { - timr->it_overrun += - hrtimer_forward(timer, timer->base->get_time(), - timr->it.real.interval); - remaining = hrtimer_get_remaining(timer); - } - calci: - /* interval timer ? */ - if (timr->it.real.interval.tv64 != 0) - cur_setting->it_interval = - ktime_to_timespec(timr->it.real.interval); + if (iv.tv64 && (timr->it_requeue_pending & REQUEUE_PENDING || + (timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) + timr->it_overrun += hrtimer_forward(timer, now, iv); + + remaining = ktime_sub(timer->expires, now); /* Return 0 only, when the timer is expired and not pending */ - if (remaining.tv64 <= 0) - cur_setting->it_value.tv_nsec = 1; - else + if (remaining.tv64 <= 0) { + /* + * A single shot SIGEV_NONE timer must return 0, when + * it is expired ! + */ + if ((timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) + cur_setting->it_value.tv_nsec = 1; + } else cur_setting->it_value = ktime_to_timespec(remaining); } |