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Commit 3ce60773 authored by Carter Cooper's avatar Carter Cooper Committed by Gerrit - the friendly Code Review server
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devfreq: Use busy cycles only for GPU bandwidth decisions 



Remove using the waiting bandwidth cycles for deciding
when to change bandwidth levels.

Change-Id: I65341c5c115684f19b5a3b2522d362e80315f2c9
Signed-off-by: default avatarCarter Cooper <ccooper@codeaurora.org>
Signed-off-by: default avatarKyle Piefer <kpiefer@codeaurora.org>
parent 0389e5ba

drivers/devfreq/governor_gpubw_mon.c

+5 −2
Original line number Diff line number Diff line
@@ -57,6 +57,7 @@ static int devfreq_gpubw_get_target(struct devfreq *df, 
	int result;

	int level = 0;

	int act_level;

	int norm_max_cycles;

	int norm_cycles;

	int gpu_percent;

	/*
@@ -86,6 +87,8 @@ static int devfreq_gpubw_get_target(struct devfreq *df, 
	if (priv->bus.total_time < LONG_FLOOR)

		return result;



	norm_max_cycles = (unsigned int)(priv->bus.ram_time) /

			(unsigned int) priv->bus.total_time;

	norm_cycles = (unsigned int)(priv->bus.ram_time + priv->bus.ram_wait) /

			(unsigned int) priv->bus.total_time;

	gpu_percent = (100 * (unsigned int)priv->bus.gpu_time) /
@@ -96,8 +99,8 @@ static int devfreq_gpubw_get_target(struct devfreq *df, 
	 * FAST hint.  Otherwise check the current value against the current

	 * cutoffs.

	 */

	if (norm_cycles > priv->bus.max) {

		_update_cutoff(priv, norm_cycles);

	if (norm_max_cycles > priv->bus.max) {

		_update_cutoff(priv, norm_max_cycles);

		bus_profile->flag = DEVFREQ_FLAG_FAST_HINT;

	} else {

		/* GPU votes for IB not AB so don't under vote the system */