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Commit a3914613 authored by Rohit Gupta's avatar Rohit Gupta
Browse files

cpufreq: cpu-boost: Force most/all tasks to big cluster on input event 



Scheduler provides an API to force tasks to the big cluster. To
improve performance, use this API to move most/all tasks to the
big cluster for short duration on an input event. On the removal of
frequency boost (after input_boost_ms), this scheduler boost is also
deactivated.

Change-Id: I9d643914ebc75266478cc22260a45862faad6236
Signed-off-by: default avatarRohit Gupta <rohgup@codeaurora.org>
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent d710c2b4

drivers/cpufreq/cpu-boost.c

+27 −2
Original line number Diff line number Diff line
@@ -39,6 +39,11 @@ static bool input_boost_enabled; 
static unsigned int input_boost_ms = 40;

module_param(input_boost_ms, uint, 0644);



static bool sched_boost_on_input;

module_param(sched_boost_on_input, bool, 0644);



static bool sched_boost_active;



static struct delayed_work input_boost_rem;

static u64 last_input_time;

#define MIN_INPUT_INTERVAL (150 * USEC_PER_MSEC)
@@ -161,7 +166,7 @@ static void update_policy_online(void) 


static void do_input_boost_rem(struct work_struct *work)

{

	unsigned int i;

	unsigned int i, ret;

	struct cpu_sync *i_sync_info;



	/* Reset the input_boost_min for all CPUs in the system */
@@ -173,14 +178,25 @@ static void do_input_boost_rem(struct work_struct *work) 


	/* Update policies for all online CPUs */

	update_policy_online();



	if (sched_boost_active) {

		ret = sched_set_boost(0);

		if (ret)

			pr_err("cpu-boost: sched boost disable failed\n");

		sched_boost_active = false;

	}

}



static void do_input_boost(struct work_struct *work)

{

	unsigned int i;

	unsigned int i, ret;

	struct cpu_sync *i_sync_info;



	cancel_delayed_work_sync(&input_boost_rem);

	if (sched_boost_active) {

		sched_set_boost(0);

		sched_boost_active = false;

	}



	/* Set the input_boost_min for all CPUs in the system */

	pr_debug("Setting input boost min for all CPUs\n");
@@ -192,6 +208,15 @@ static void do_input_boost(struct work_struct *work) 
	/* Update policies for all online CPUs */

	update_policy_online();



	/* Enable scheduler boost to migrate tasks to big cluster */

	if (sched_boost_on_input) {

		ret = sched_set_boost(1);

		if (ret)

			pr_err("cpu-boost: sched boost enable failed\n");

		else

			sched_boost_active = true;

	}



	queue_delayed_work(cpu_boost_wq, &input_boost_rem,

					msecs_to_jiffies(input_boost_ms));

}