static DEFINE_SPINLOCK(idr_lock);
/*
- * Just because the timer is not in the timer list does NOT mean it is
- * inactive. It could be in the "fire" routine getting a new expire time.
- */
-#define TIMER_INACTIVE 1
-
-#ifdef CONFIG_SMP
-# define timer_active(tmr) \
- ((tmr)->it.real.timer.entry.prev != (void *)TIMER_INACTIVE)
-# define set_timer_inactive(tmr) \
- do { \
- (tmr)->it.real.timer.entry.prev = (void *)TIMER_INACTIVE; \
- } while (0)
-#else
-# define timer_active(tmr) BARFY // error to use outside of SMP
-# define set_timer_inactive(tmr) do { } while (0)
-#endif
-/*
* we assume that the new SIGEV_THREAD_ID shares no bits with the other
* SIGEV values. Here we put out an error if this assumption fails.
*/
init_timer(&new_timer->it.real.timer);
new_timer->it.real.timer.data = (unsigned long) new_timer;
new_timer->it.real.timer.function = posix_timer_fn;
- set_timer_inactive(new_timer);
return 0;
}
long sec = tp->tv_sec;
long nsec = tp->tv_nsec + res - 1;
- if (nsec > NSEC_PER_SEC) {
+ if (nsec >= NSEC_PER_SEC) {
sec++;
nsec -= NSEC_PER_SEC;
}
timr->sigq->info.si_code = SI_TIMER;
timr->sigq->info.si_tid = timr->it_id;
timr->sigq->info.si_value = timr->it_sigev_value;
+
if (timr->it_sigev_notify & SIGEV_THREAD_ID) {
- if (unlikely(timr->it_process->flags & PF_EXITING)) {
- timr->it_sigev_notify = SIGEV_SIGNAL;
- put_task_struct(timr->it_process);
- timr->it_process = timr->it_process->group_leader;
- goto group;
- }
- return send_sigqueue(timr->it_sigev_signo, timr->sigq,
- timr->it_process);
- }
- else {
- group:
- return send_group_sigqueue(timr->it_sigev_signo, timr->sigq,
- timr->it_process);
+ struct task_struct *leader;
+ int ret = send_sigqueue(timr->it_sigev_signo, timr->sigq,
+ timr->it_process);
+
+ if (likely(ret >= 0))
+ return ret;
+
+ timr->it_sigev_notify = SIGEV_SIGNAL;
+ leader = timr->it_process->group_leader;
+ put_task_struct(timr->it_process);
+ timr->it_process = leader;
}
+
+ return send_group_sigqueue(timr->it_sigev_signo, timr->sigq,
+ timr->it_process);
}
EXPORT_SYMBOL_GPL(posix_timer_event);
int do_notify = 1;
spin_lock_irqsave(&timr->it_lock, flags);
- set_timer_inactive(timr);
if (!list_empty(&timr->it.real.abs_timer_entry)) {
spin_lock(&abs_list.lock);
do {
jiffies_64_f = get_jiffies_64();
}
/*
- * Take away now to get delta
+ * Take away now to get delta and normalize
*/
- oc.tv_sec -= now.tv_sec;
- oc.tv_nsec -= now.tv_nsec;
- /*
- * Normalize...
- */
- while ((oc.tv_nsec - NSEC_PER_SEC) >= 0) {
- oc.tv_nsec -= NSEC_PER_SEC;
- oc.tv_sec++;
- }
- while ((oc.tv_nsec) < 0) {
- oc.tv_nsec += NSEC_PER_SEC;
- oc.tv_sec--;
- }
+ set_normalized_timespec(&oc, oc.tv_sec - now.tv_sec,
+ oc.tv_nsec - now.tv_nsec);
}else{
jiffies_64_f = get_jiffies_64();
}
* careful here. If smp we could be in the "fire" routine which will
* be spinning as we hold the lock. But this is ONLY an SMP issue.
*/
+ if (try_to_del_timer_sync(&timr->it.real.timer) < 0) {
#ifdef CONFIG_SMP
- if (timer_active(timr) && !del_timer(&timr->it.real.timer))
/*
* It can only be active if on an other cpu. Since
* we have cleared the interval stuff above, it should
* a "retry" exit status.
*/
return TIMER_RETRY;
-
- set_timer_inactive(timr);
-#else
- del_timer(&timr->it.real.timer);
#endif
+ }
+
remove_from_abslist(timr);
timr->it_requeue_pending = (timr->it_requeue_pending + 2) &
static inline int common_timer_del(struct k_itimer *timer)
{
timer->it.real.incr = 0;
+
+ if (try_to_del_timer_sync(&timer->it.real.timer) < 0) {
#ifdef CONFIG_SMP
- if (timer_active(timer) && !del_timer(&timer->it.real.timer))
/*
* It can only be active if on an other cpu. Since
* we have cleared the interval stuff above, it should
* a "retry" exit status.
*/
return TIMER_RETRY;
-#else
- del_timer(&timer->it.real.timer);
#endif
+ }
+
remove_from_abslist(timer);
return 0;
}
/*
- * This is called by __exit_signal, only when there are no more
+ * This is called by do_exit or de_thread, only when there are no more
* references to the shared signal_struct.
*/
void exit_itimers(struct signal_struct *sig)
tmr = list_entry(sig->posix_timers.next, struct k_itimer, list);
itimer_delete(tmr);
}
- del_timer_sync(&sig->real_timer);
}
/*
do_posix_clock_monotonic_gettime_parts(tp, &wall_to_mono);
- tp->tv_sec += wall_to_mono.tv_sec;
- tp->tv_nsec += wall_to_mono.tv_nsec;
+ set_normalized_timespec(tp, tp->tv_sec + wall_to_mono.tv_sec,
+ tp->tv_nsec + wall_to_mono.tv_nsec);
- if ((tp->tv_nsec - NSEC_PER_SEC) > 0) {
- tp->tv_nsec -= NSEC_PER_SEC;
- tp->tv_sec++;
- }
return 0;
}
return error;
}
-static void nanosleep_wake_up(unsigned long __data)
-{
- struct task_struct *p = (struct task_struct *) __data;
-
- wake_up_process(p);
-}
-
/*
* The standard says that an absolute nanosleep call MUST wake up at
* the requested time in spite of clock settings. Here is what we do:
int flags, struct timespec *tsave)
{
struct timespec t, dum;
- struct timer_list new_timer;
DECLARE_WAITQUEUE(abs_wqueue, current);
u64 rq_time = (u64)0;
s64 left;
¤t_thread_info()->restart_block;
abs_wqueue.flags = 0;
- init_timer(&new_timer);
- new_timer.expires = 0;
- new_timer.data = (unsigned long) current;
- new_timer.function = nanosleep_wake_up;
abs = flags & TIMER_ABSTIME;
if (restart_block->fn == clock_nanosleep_restart) {
if (left < (s64)0)
break;
- new_timer.expires = jiffies + left;
- __set_current_state(TASK_INTERRUPTIBLE);
- add_timer(&new_timer);
-
- schedule();
+ schedule_timeout_interruptible(left);
- del_timer_sync(&new_timer);
left = rq_time - get_jiffies_64();
} while (left > (s64)0 && !test_thread_flag(TIF_SIGPENDING));
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff