Ejemplos de tick_init_jiffy_update en C++ (Cpp)

Ejemplo n.º 1

Archivo: tick-sched.c Proyecto: marcero/ab73kernel-Hannspad-2632

/**
 * tick_setup_sched_timer - setup the tick emulation timer
 */
void tick_setup_sched_timer(void)
{
	struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
	ktime_t now = ktime_get();

	/*
	 * Emulate tick processing via per-CPU hrtimers:
	 */
	hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
	ts->sched_timer.function = tick_sched_timer;

	/* Get the next period (per cpu) */
	hrtimer_set_expires(&ts->sched_timer, tick_init_jiffy_update());

	for (;;) {
		hrtimer_forward(&ts->sched_timer, now, tick_period);
		hrtimer_start_expires(&ts->sched_timer,
				      HRTIMER_MODE_ABS_PINNED);
		/* Check, if the timer was already in the past */
		if (hrtimer_active(&ts->sched_timer))
			break;
		now = ktime_get();
	}

#ifdef CONFIG_NO_HZ
	if (tick_nohz_enabled)
		ts->nohz_mode = NOHZ_MODE_HIGHRES;
#endif
}

Ejemplo n.º 2

Archivo: tick-sched.c Proyecto: MiniBlu/cm11_kernel_htc_msm8974a3ul

void tick_setup_sched_timer(void)
{
	struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
	ktime_t now = ktime_get();

	hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
	ts->sched_timer.function = tick_sched_timer;

	
	hrtimer_set_expires(&ts->sched_timer, tick_init_jiffy_update());

	for (;;) {
		hrtimer_forward(&ts->sched_timer, now, tick_period);
		hrtimer_start_expires(&ts->sched_timer,
				      HRTIMER_MODE_ABS_PINNED);
		
		if (hrtimer_active(&ts->sched_timer))
			break;
		now = ktime_get();
	}

#ifdef CONFIG_NO_HZ
	if (tick_nohz_enabled)
		ts->nohz_mode = NOHZ_MODE_HIGHRES;
#endif
}

Ejemplo n.º 3

Archivo: tick-sched.c Proyecto: marcero/ab73kernel-Hannspad-2632

/**
 * tick_nohz_switch_to_nohz - switch to nohz mode
 */
static void tick_nohz_switch_to_nohz(void)
{
	struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
	ktime_t next;

	if (!tick_nohz_enabled)
		return;

	local_irq_disable();
	if (tick_switch_to_oneshot(tick_nohz_handler)) {
		local_irq_enable();
		return;
	}

	ts->nohz_mode = NOHZ_MODE_LOWRES;

	/*
	 * Recycle the hrtimer in ts, so we can share the
	 * hrtimer_forward with the highres code.
	 */
	hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
	/* Get the next period */
	next = tick_init_jiffy_update();

	for (;;) {
		hrtimer_set_expires(&ts->sched_timer, next);
		if (!tick_program_event(next, 0))
			break;
		next = ktime_add(next, tick_period);
	}
	local_irq_enable();

	printk(KERN_INFO "Switched to NOHz mode on CPU #%d\n",
	       smp_processor_id());
}

Ejemplo n.º 4

Archivo: tick-sched.c Proyecto: MiniBlu/cm11_kernel_htc_msm8974a3ul

static void tick_nohz_switch_to_nohz(void)
{
	struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
	ktime_t next;

	if (!tick_nohz_enabled)
		return;

	local_irq_disable();
	if (tick_switch_to_oneshot(tick_nohz_handler)) {
		local_irq_enable();
		return;
	}

	ts->nohz_mode = NOHZ_MODE_LOWRES;

	hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
	
	next = tick_init_jiffy_update();

	for (;;) {
		hrtimer_set_expires(&ts->sched_timer, next);
		if (!tick_program_event(next, 0))
			break;
		next = ktime_add(next, tick_period);
	}
	local_irq_enable();
}