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[PATCH] hrtimers: cleanups and simplifications

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Clean up the interface to hrtimers by changing the init code to pass the mode
as well as the clock.  This allow the init code to select the correct base and
eliminates extra timer re-init code in posix-timers.  We also simplify the
restart interface nanosleep use.

Signed-off-by: George Anzinger <george@mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
George Anzinger
2006-02-01 03:05:11 -08:00
committed by Linus Torvalds
parent ff60a5dc4f
commit 7978672c4d
4 changed files with 37 additions and 68 deletions
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37
kernel/posix-timers.c
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@@ -194,9 +194,7 @@ static inline int common_clock_set(const clockid_t which_clock,
static int common_timer_create(struct k_itimer *new_timer)
{
hrtimer_init(&new_timer->it.real.timer, new_timer->it_clock);
new_timer->it.real.timer.data = new_timer;
new_timer->it.real.timer.function = posix_timer_fn;
hrtimer_init(&new_timer->it.real.timer, new_timer->it_clock, 0);
return 0;
}
@@ -693,6 +691,7 @@ common_timer_set(struct k_itimer *timr, int flags,
struct itimerspec *new_setting, struct itimerspec *old_setting)
{
struct hrtimer *timer = &timr->it.real.timer;
enum hrtimer_mode mode;
if (old_setting)
common_timer_get(timr, old_setting);
@@ -714,14 +713,10 @@ common_timer_set(struct k_itimer *timr, int flags,
if (!new_setting->it_value.tv_sec && !new_setting->it_value.tv_nsec)
return 0;
/* Posix madness. Only absolute CLOCK_REALTIME timers
* are affected by clock sets. So we must reiniatilize
* the timer.
*/
if (timr->it_clock == CLOCK_REALTIME && (flags & TIMER_ABSTIME))
hrtimer_rebase(timer, CLOCK_REALTIME);
else
hrtimer_rebase(timer, CLOCK_MONOTONIC);
mode = flags & TIMER_ABSTIME ? HRTIMER_ABS : HRTIMER_REL;
hrtimer_init(&timr->it.real.timer, timr->it_clock, mode);
timr->it.real.timer.data = timr;
timr->it.real.timer.function = posix_timer_fn;
timer->expires = timespec_to_ktime(new_setting->it_value);
@@ -732,8 +727,7 @@ common_timer_set(struct k_itimer *timr, int flags,
if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE))
return 0;
hrtimer_start(timer, timer->expires, (flags & TIMER_ABSTIME) ?
HRTIMER_ABS : HRTIMER_REL);
hrtimer_start(timer, timer->expires, mode);
return 0;
}
@@ -948,21 +942,8 @@ sys_clock_getres(const clockid_t which_clock, struct timespec __user *tp)
static int common_nsleep(const clockid_t which_clock, int flags,
struct timespec *tsave, struct timespec __user *rmtp)
{
int mode = flags & TIMER_ABSTIME ? HRTIMER_ABS : HRTIMER_REL;
int clockid = which_clock;
switch (which_clock) {
case CLOCK_REALTIME:
/* Posix madness. Only absolute timers on clock realtime
are affected by clock set. */
if (mode != HRTIMER_ABS)
clockid = CLOCK_MONOTONIC;
case CLOCK_MONOTONIC:
break;
default:
return -EINVAL;
}
return hrtimer_nanosleep(tsave, rmtp, mode, clockid);
return hrtimer_nanosleep(tsave, rmtp, flags & TIMER_ABSTIME ?
HRTIMER_ABS : HRTIMER_REL, which_clock);
}
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