#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/time.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
struct itimerspec *, struct itimerspec *);
static int common_timer_del(struct k_itimer *timer);
-static int posix_timer_fn(void *data);
+static int posix_timer_fn(struct hrtimer *data);
static struct k_itimer *lock_timer(timer_t timer_id, unsigned long *flags);
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;
}
static void schedule_next_timer(struct k_itimer *timr)
{
+ struct hrtimer *timer = &timr->it.real.timer;
+
if (timr->it.real.interval.tv64 == 0)
return;
- timr->it_overrun += hrtimer_forward(&timr->it.real.timer,
+ timr->it_overrun += hrtimer_forward(timer, timer->base->get_time(),
timr->it.real.interval);
+
timr->it_overrun_last = timr->it_overrun;
timr->it_overrun = -1;
++timr->it_requeue_pending;
- hrtimer_restart(&timr->it.real.timer);
+ hrtimer_restart(timer);
}
/*
info->si_overrun = timr->it_overrun_last;
}
- unlock_timer(timr, flags);
+ if (timr)
+ unlock_timer(timr, flags);
}
int posix_timer_event(struct k_itimer *timr,int si_private)
* This code is for CLOCK_REALTIME* and CLOCK_MONOTONIC* timers.
*/
-static int posix_timer_fn(void *data)
+static int posix_timer_fn(struct hrtimer *timer)
{
- struct k_itimer *timr = data;
+ struct k_itimer *timr;
unsigned long flags;
int si_private = 0;
int ret = HRTIMER_NORESTART;
+ timr = container_of(timer, struct k_itimer, it.real.timer);
spin_lock_irqsave(&timr->it_lock, flags);
if (timr->it.real.interval.tv64 != 0)
*/
if (timr->it.real.interval.tv64 != 0) {
timr->it_overrun +=
- hrtimer_forward(&timr->it.real.timer,
+ hrtimer_forward(timer,
+ timer->base->softirq_time,
timr->it.real.interval);
ret = HRTIMER_RESTART;
+ ++timr->it_requeue_pending;
}
}
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, 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);
}
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);
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.function = posix_timer_fn;
timer->expires = timespec_to_ktime(new_setting->it_value);
timr->it.real.interval = timespec_to_ktime(new_setting->it_interval);
/* SIGEV_NONE timers are not queued ! See common_timer_get */
- if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE))
+ if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) {
+ /* Setup correct expiry time for relative timers */
+ if (mode == HRTIMER_REL)
+ timer->expires = ktime_add(timer->expires,
+ timer->base->get_time());
return 0;
+ }
- hrtimer_start(timer, timer->expires, (flags & TIMER_ABSTIME) ?
- HRTIMER_ABS : HRTIMER_REL);
+ hrtimer_start(timer, timer->expires, mode);
return 0;
}
}
EXPORT_SYMBOL_GPL(do_posix_clock_nosettime);
-int do_posix_clock_notimer_create(struct k_itimer *timer)
-{
- return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(do_posix_clock_notimer_create);
-
int do_posix_clock_nonanosleep(const clockid_t clock, int flags,
struct timespec *t, struct timespec __user *r)
{
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);
}
asmlinkage long
git.openpandora.org / pandora-kernel.git / blobdiff