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Commit 220c8fe0 authored by Rohit Gupta's avatar Rohit Gupta Committed by Jonathan Avila
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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>
Signed-off-by: default avatarJonathan Avila <avilaj@codeaurora.org>
parent ad47217c

drivers/cpufreq/cpu-boost.c

+34 −2
Original line number Diff line number Diff line
@@ -54,6 +54,13 @@ show_one(input_boost_ms); 
store_one(input_boost_ms);

cpu_boost_attr_rw(input_boost_ms);



static unsigned int sched_boost_on_input;

show_one(sched_boost_on_input);

store_one(sched_boost_on_input);

cpu_boost_attr_rw(sched_boost_on_input);



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)
@@ -175,7 +182,7 @@ 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 */
@@ -187,14 +194,25 @@ 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");
@@ -206,6 +224,15 @@ 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));

}
@@ -332,6 +359,11 @@ static int cpu_boost_init(void) 
	if (ret)

		pr_err("Failed to create input_boost_freq node: %d\n", ret);



	ret = sysfs_create_file(cpu_boost_kobj,

				&sched_boost_on_input_attr.attr);

	if (ret)

		pr_err("Failed to create sched_boost_on_input node: %d\n", ret);



	ret = input_register_handler(&cpuboost_input_handler);

	return 0;

}