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Commit 86ff3d53 authored by Lucille Sylvester's avatar Lucille Sylvester
Browse files

msm: kgsl: Bump the GPU frequency for long blocks of processing 



If there are several frames of full GPU utilization immediately
bump the frequency to turbo rather than waiting for the DCVS
algorithm to run.

Change-Id: I1215225f8903a8656e8ad92c6c82567b86665933
Signed-off-by: default avatarLucille Sylvester <lsylvest@codeaurora.org>
parent 53e6e12c

drivers/devfreq/governor_msm_adreno_tz.c

+21 −1
Original line number Original line Diff line number Diff line
@@ -35,6 +35,13 @@ static DEFINE_SPINLOCK(tz_lock); 
 * MIN_BUSY is 1 msec for the sample to be sent

 * MIN_BUSY is 1 msec for the sample to be sent

 */

 */

#define MIN_BUSY		1000

#define MIN_BUSY		1000

/*

 * Use BUSY_BIN to check for fully busy rendering

 * intervals that may need early intervention when

 * seen with LONG_FRAME lengths

 */

#define BUSY_BIN		95

#define LONG_FRAME		25000

#define MAX_TZ_VERSION		0

#define MAX_TZ_VERSION		0





/*

/*
@@ -177,6 +184,7 @@ static int tz_get_target_freq(struct devfreq *devfreq, unsigned long *freq, 
	struct devfreq_dev_status stats;

	struct devfreq_dev_status stats;

	int val, level = 0;

	int val, level = 0;

	unsigned int scm_data[3];

	unsigned int scm_data[3];

	static int busy_bin, frame_flag;





	/* keeps stats.private_data == NULL   */

	/* keeps stats.private_data == NULL   */

	result = devfreq->profile->get_dev_status(devfreq->dev.parent, &stats);

	result = devfreq->profile->get_dev_status(devfreq->dev.parent, &stats);
@@ -201,6 +209,15 @@ static int tz_get_target_freq(struct devfreq *devfreq, unsigned long *freq, 
		return 0;

		return 0;

	}

	}





	if ((stats.busy_time * 100 / stats.total_time) > BUSY_BIN) {

		busy_bin += stats.busy_time;

		if (stats.total_time > LONG_FRAME)

			frame_flag = 1;

	} else {

		busy_bin = 0;

		frame_flag = 0;

	}



	level = devfreq_get_freq_level(devfreq, stats.current_frequency);

	level = devfreq_get_freq_level(devfreq, stats.current_frequency);

	if (level < 0) {

	if (level < 0) {

		pr_err(TAG "bad freq %ld\n", stats.current_frequency);

		pr_err(TAG "bad freq %ld\n", stats.current_frequency);
@@ -211,8 +228,11 @@ static int tz_get_target_freq(struct devfreq *devfreq, unsigned long *freq, 
	 * If there is an extended block of busy processing,

	 * If there is an extended block of busy processing,

	 * increase frequency.  Otherwise run the normal algorithm.

	 * increase frequency.  Otherwise run the normal algorithm.

	 */

	 */

	if (priv->bin.busy_time > CEILING) {

	if (priv->bin.busy_time > CEILING ||

		(busy_bin > CEILING && frame_flag)) {

		val = -1 * level;

		val = -1 * level;

		busy_bin = 0;

		frame_flag = 0;

	} else {

	} else {





		scm_data[0] = level;

		scm_data[0] = level;