Merge "PM / devfreq: Check for GPU busy time before sending the sample" (a6aeff2c) · Commits · e / devices / android_kernel_sony_msm8994

drivers/devfreq/governor_msm_adreno_tz.c

+11 −5

Original line number	Diff line number	Diff line
		/* Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -29,6 +29,10 @@ static DEFINE_SPINLOCK(tz_lock);
		* per frame for 60fps content.
		*/
		#define FLOOR 5000
		/*
		* MIN_BUSY is 1 msec for the sample to be sent
		*/
		#define MIN_BUSY 1000
		#define LONG_FLOOR 50000
		#define HIST 5
		#define TARGET 80
		@@ -116,11 +120,13 @@ static int tz_get_target_freq(struct devfreq devfreq, unsigned long freq,
		/*
		* Do not waste CPU cycles running this algorithm if
		* the GPU just started, or if less than FLOOR time
		* has passed since the last run.
		* has passed since the last run or the gpu hasn't been
		* busier than MIN_BUSY.
		*/
		if ((stats.total_time == 0) \|\|
		(priv->bin.total_time < FLOOR)) {
		return 1;
		(priv->bin.total_time < FLOOR) \|\|
		(unsigned int) priv->bin.busy_time < MIN_BUSY) {
		return 0;
		}

		level = devfreq_get_freq_level(devfreq, stats.current_frequency);