mali/common/mali_kernel_vsync.c

/*
 * Copyright (C) 2011-2014, 2016 ARM Limited. All rights reserved.
 * 
 * This program is free software and is provided to you under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
 * 
 * A copy of the licence is included with the program, and can also be obtained from Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include "mali_kernel_common.h"
#include "mali_osk.h"
#include "mali_ukk.h"

#include "mali_osk_profiling.h"

_mali_osk_errcode_t _mali_ukk_vsync_event_report(_mali_uk_vsync_event_report_s *args)
{
	_mali_uk_vsync_event event = (_mali_uk_vsync_event)args->event;
	MALI_IGNORE(event); /* event is not used for release code, and that is OK */

	/*
	 * Manually generate user space events in kernel space.
	 * This saves user space from calling kernel space twice in this case.
	 * We just need to remember to add pid and tid manually.
	 */
	if (event == _MALI_UK_VSYNC_EVENT_BEGIN_WAIT) {
		_mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SUSPEND |
					      MALI_PROFILING_EVENT_CHANNEL_SOFTWARE |
					      MALI_PROFILING_EVENT_REASON_SUSPEND_RESUME_SW_VSYNC,
					      _mali_osk_get_pid(), _mali_osk_get_tid(), 0, 0, 0);
	}

	if (event == _MALI_UK_VSYNC_EVENT_END_WAIT) {
		_mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_RESUME |
					      MALI_PROFILING_EVENT_CHANNEL_SOFTWARE |
					      MALI_PROFILING_EVENT_REASON_SUSPEND_RESUME_SW_VSYNC,
					      _mali_osk_get_pid(), _mali_osk_get_tid(), 0, 0, 0);
	}


	MALI_DEBUG_PRINT(4, ("Received VSYNC event: %d\n", event));
	MALI_SUCCESS;
}