C++ (Cpp) kbase_pm_update_active Examples

Example #1

File: mali_kbase_pm.c Project: MukeshMM/android_kernel_samsung_j2lte

int kbase_pm_context_active_handle_suspend(struct kbase_device *kbdev, enum kbase_pm_suspend_handler suspend_handler)
{
	int c;
	int old_count;

	KBASE_DEBUG_ASSERT(kbdev != NULL);

	/* Trace timeline information about how long it took to handle the decision
	 * to powerup. Sometimes the event might be missed due to reading the count
	 * outside of mutex, but this is necessary to get the trace timing
	 * correct. */
	old_count = kbdev->pm.active_count;
	if (old_count == 0)
		kbase_timeline_pm_send_event(kbdev, KBASE_TIMELINE_PM_EVENT_GPU_ACTIVE);

	mutex_lock(&kbdev->pm.lock);
	if (kbase_pm_is_suspending(kbdev)) {
		switch (suspend_handler) {
		case KBASE_PM_SUSPEND_HANDLER_DONT_REACTIVATE:
			if (kbdev->pm.active_count != 0)
				break;
			/* FALLTHROUGH */
		case KBASE_PM_SUSPEND_HANDLER_DONT_INCREASE:
			mutex_unlock(&kbdev->pm.lock);
			if (old_count == 0)
				kbase_timeline_pm_handle_event(kbdev, KBASE_TIMELINE_PM_EVENT_GPU_ACTIVE);
			return 1;

		case KBASE_PM_SUSPEND_HANDLER_NOT_POSSIBLE:
			/* FALLTHROUGH */
		default:
			KBASE_DEBUG_ASSERT_MSG(MALI_FALSE, "unreachable");
			break;
		}
	}
	c = ++kbdev->pm.active_count;
	KBASE_TIMELINE_CONTEXT_ACTIVE(kbdev, c);

	KBASE_TRACE_ADD_REFCOUNT(kbdev, PM_CONTEXT_ACTIVE, NULL, NULL, 0u, c);

	/* Trace the event being handled */
	if (old_count == 0)
		kbase_timeline_pm_handle_event(kbdev, KBASE_TIMELINE_PM_EVENT_GPU_ACTIVE);

	if (c == 1) {
		/* First context active: Power on the GPU and any cores requested by
		 * the policy */
		kbase_pm_update_active(kbdev);

#ifndef MALI_SEC_SEPERATED_UTILIZATION
		kbasep_pm_record_gpu_active(kbdev);
#endif
	}

	mutex_unlock(&kbdev->pm.lock);

	return 0;
}

Example #2

File: mali_kbase_pm_policy.c Project: advx9600/kernel-4.4-RuiEr

void kbase_pm_set_policy(kbase_device *kbdev, const kbase_pm_policy *new_policy)
{
	const kbase_pm_policy *old_policy;
	unsigned long flags;

	KBASE_DEBUG_ASSERT(kbdev != NULL);
	KBASE_DEBUG_ASSERT(new_policy != NULL);

	KBASE_TRACE_ADD(kbdev, PM_SET_POLICY, NULL, NULL, 0u, new_policy->id);

	/* During a policy change we pretend the GPU is active */
	/* A suspend won't happen here, because we're in a syscall from a userspace thread */
	kbase_pm_context_active(kbdev);

	mutex_lock(&kbdev->pm.lock);

	/* Remove the policy to prevent IRQ handlers from working on it */
	spin_lock_irqsave(&kbdev->pm.power_change_lock, flags);
	old_policy = kbdev->pm.pm_current_policy;
	kbdev->pm.pm_current_policy = NULL;
	spin_unlock_irqrestore(&kbdev->pm.power_change_lock, flags);

	KBASE_TRACE_ADD(kbdev, PM_CURRENT_POLICY_TERM, NULL, NULL, 0u, old_policy->id);
	if (old_policy->term)
		old_policy->term(kbdev);

	KBASE_TRACE_ADD(kbdev, PM_CURRENT_POLICY_INIT, NULL, NULL, 0u, new_policy->id);
	if (new_policy->init)
		new_policy->init(kbdev);

	spin_lock_irqsave(&kbdev->pm.power_change_lock, flags);
	kbdev->pm.pm_current_policy = new_policy;
	spin_unlock_irqrestore(&kbdev->pm.power_change_lock, flags);

	/* If any core power state changes were previously attempted, but couldn't
	 * be made because the policy was changing (current_policy was NULL), then
	 * re-try them here. */
	kbase_pm_update_active(kbdev);
	kbase_pm_update_cores_state(kbdev);

	mutex_unlock(&kbdev->pm.lock);

	/* Now the policy change is finished, we release our fake context active reference */
	kbase_pm_context_idle(kbdev);
}

Example #3

File: mali_kbase_pm.c Project: MukeshMM/android_kernel_samsung_j2lte

void kbase_pm_context_idle(struct kbase_device *kbdev)
{
	int c;
	int old_count;

	KBASE_DEBUG_ASSERT(kbdev != NULL);

	/* Trace timeline information about how long it took to handle the decision
	 * to powerdown. Sometimes the event might be missed due to reading the
	 * count outside of mutex, but this is necessary to get the trace timing
	 * correct. */
	old_count = kbdev->pm.active_count;
	if (old_count == 0)
		kbase_timeline_pm_send_event(kbdev, KBASE_TIMELINE_PM_EVENT_GPU_IDLE);

	mutex_lock(&kbdev->pm.lock);

	c = --kbdev->pm.active_count;
	KBASE_TIMELINE_CONTEXT_ACTIVE(kbdev, c);

	KBASE_TRACE_ADD_REFCOUNT(kbdev, PM_CONTEXT_IDLE, NULL, NULL, 0u, c);

	KBASE_DEBUG_ASSERT(c >= 0);

	/* Trace the event being handled */
	if (old_count == 0)
		kbase_timeline_pm_handle_event(kbdev, KBASE_TIMELINE_PM_EVENT_GPU_IDLE);

	if (c == 0) {
		/* Last context has gone idle */
		kbase_pm_update_active(kbdev);

#ifndef MALI_SEC_SEPERATED_UTILIZATION
		kbasep_pm_record_gpu_idle(kbdev);
#endif

		/* Wake up anyone waiting for this to become 0 (e.g. suspend). The
		 * waiters must synchronize with us by locking the pm.lock after
		 * waiting */
		wake_up(&kbdev->pm.zero_active_count_wait);
	}

	mutex_unlock(&kbdev->pm.lock);
}