Merge "msm: kgsl: Add a dynamic AB bandwidth vote" (5c7ba6da) · Commits · e / devices / android_kernel_sony_msm8994

drivers/devfreq/governor_gpubw_mon.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -53,6 +53,12 @@ static int devfreq_gpubw_get_target(struct devfreq *df,
		int act_level;
		int norm_cycles;
		int gpu_percent;
		/*
		* Normalized AB should at max usage be the gpu_bimc frequency in MHz.
		* Start with a reasonable value and let the system push it up to max.
		*/
		static int norm_ab_max = 300;
		int norm_ab;

		stats.private_data = &b;

		@@ -97,6 +103,15 @@ static int devfreq_gpubw_get_target(struct devfreq *df,
		bus_profile->flag = DEVFREQ_FLAG_SLOW_HINT;
		}

		/* Re-calculate the AB percentage for a new IB vote */
		if (bus_profile->flag) {
		norm_ab = (unsigned int)priv->bus.ram_time /
		(unsigned int) priv->bus.total_time;
		if (norm_ab > norm_ab_max)
		norm_ab_max = norm_ab;
		bus_profile->percent_ab = (100 * norm_ab) / norm_ab_max;
		}

		priv->bus.total_time = 0;
		priv->bus.gpu_time = 0;
		priv->bus.ram_time = 0;