/* timr->it_lock is taken. */ static int 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); /* disable the timer */ timr->it.real.interval.tv64 = 0; /* * 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 (hrtimer_try_to_cancel(timer) < 0) return TIMER_RETRY; timr->it_requeue_pending = (timr->it_requeue_pending + 2) & ~REQUEUE_PENDING; timr->it_overrun_last = 0; /* switch off the timer when it_value is zero */ if (!new_setting->it_value.tv_sec && !new_setting->it_value.tv_nsec) return 0; mode = flags & TIMER_ABSTIME ? HRTIMER_MODE_ABS : HRTIMER_MODE_REL; hrtimer_init(&timr->it.real.timer, timr->it_clock, mode); timr->it.real.timer.function = posix_timer_fn; hrtimer_set_expires(timer, timespec_to_ktime(new_setting->it_value)); /* Convert interval */ 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)) { /* Setup correct expiry time for relative timers */ if (mode == HRTIMER_MODE_REL) { hrtimer_add_expires(timer, timer->base->get_time()); } return 0; } hrtimer_start_expires(timer, mode); return 0; }
/* timr->it_lock is taken. */ static inline int common_timer_set(struct k_itimer *timr, int flags, struct itimerspec *new_setting, struct itimerspec *old_setting) { struct hrtimer *timer = &timr->it.real.timer; if (old_setting) common_timer_get(timr, old_setting); /* disable the timer */ timr->it.real.interval.tv64 = 0; /* * 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 (hrtimer_try_to_cancel(timer) < 0) return TIMER_RETRY; timr->it_requeue_pending = (timr->it_requeue_pending + 2) & ~REQUEUE_PENDING; timr->it_overrun_last = 0; /* switch off the timer when it_value is zero */ 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); timer->expires = timespec_to_ktime(new_setting->it_value); /* Convert interval */ 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)) return 0; hrtimer_start(timer, timer->expires, (flags & TIMER_ABSTIME) ? HRTIMER_ABS : HRTIMER_REL); return 0; }
static int 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); timr->it.real.interval.tv64 = 0; if (hrtimer_try_to_cancel(timer) < 0) return TIMER_RETRY; timr->it_requeue_pending = (timr->it_requeue_pending + 2) & ~REQUEUE_PENDING; timr->it_overrun_last = 0; if (!new_setting->it_value.tv_sec && !new_setting->it_value.tv_nsec) return 0; mode = flags & TIMER_ABSTIME ? HRTIMER_MODE_ABS : HRTIMER_MODE_REL; hrtimer_init(&timr->it.real.timer, timr->it_clock, mode); timr->it.real.timer.function = posix_timer_fn; hrtimer_set_expires(timer, timespec_to_ktime(new_setting->it_value)); timr->it.real.interval = timespec_to_ktime(new_setting->it_interval); if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) { if (mode == HRTIMER_MODE_REL) { hrtimer_add_expires(timer, timer->base->get_time()); } return 0; } hrtimer_start_expires(timer, mode); return 0; }