C++ (Cpp) mc_active_core Exemples

Exemple #1

Fichier : sec_os_ctrl.c Projet : 4pao/android_kernel_hardkernel_odroidxu3

/* The current core where Secure OS is on */
static ssize_t current_core_show(struct kobject *kobj,
		struct kobj_attribute *attr, char *buf)
{
	current_core = mc_active_core();

	return sprintf(buf, "Secure OS is on core [%c%d]\n",
			(current_core < 4) ? 'L' : 'b', (current_core & 3));
}

Exemple #2

Fichier : sec_os_booster.c Projet : TheTypoMaster/android_kernel_samsung_exynos5433

int secos_booster_start(enum secos_boost_policy policy)
{
	int ret = 0;
	int freq;

	current_core = mc_active_core();

	/* migrate to big Core */
	if ((policy != MAX_PERFORMANCE) && (policy != MID_PERFORMANCE)
			&& (policy != MIN_PERFORMANCE)) {
		pr_err("%s: wrong secos boost policy:%d\n", __func__, policy);
		ret = -EINVAL;
		goto error;
	}

	/* cpufreq configuration */
	if (policy == MAX_PERFORMANCE)
		freq = max_cpu_freq;
	else if (policy == MID_PERFORMANCE)
		freq = MID_CPUFREQ;
	else
		freq = 0;
	pm_qos_update_request(&secos_booster_qos, freq); /* KHz */

	if (!cpu_online(DEFAULT_BIG_CORE)) {
		pr_debug("%s: %d core is offline\n", __func__, DEFAULT_BIG_CORE);
		udelay(100);
		if (!cpu_online(DEFAULT_BIG_CORE)) {
			pr_debug("%s: %d core is offline\n", __func__, DEFAULT_BIG_CORE);
			pm_qos_update_request(&secos_booster_qos, 0);
			ret = -EPERM;
			goto error;
		}
		pr_debug("%s: %d core is online\n", __func__, DEFAULT_BIG_CORE);
	}
	ret = mc_switch_core(DEFAULT_BIG_CORE);
	if (ret) {
		pr_err("%s: mc switch failed : err:%d\n", __func__, ret);
		pm_qos_update_request(&secos_booster_qos, 0);
		goto error;
	}

	/* Change schedule policy */
	mc_set_schedule_policy(DEFAULT_BIG_CORE);

	/* Restore origin performance policy after default boost time */
	hrtimer_cancel(&timer);
	hrtimer_start(&timer, ns_to_ktime((u64)DEFAULT_SECOS_BOOST_TIME * NSEC_PER_MSEC),
			HRTIMER_MODE_REL);

error:
	return ret;
}