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Commit 1effdccb authored by Junjie Wu's avatar Junjie Wu
Browse files

cpufreq: interactive: Make window alignment optional 



Make sampling window alignment optional when scheduler inputs
are not enabled.

Change-Id: If69c111a3efe219cdd1e38c1f46f03404789c0bb
Signed-off-by: default avatarJunjie Wu <junjiew@codeaurora.org>
parent 345ef1c3

drivers/cpufreq/cpufreq_interactive.c

+22 −2
Original line number Diff line number Diff line
@@ -127,6 +127,13 @@ struct cpufreq_interactive_tunables { 
	bool use_sched_load;

	bool use_migration_notif;



	/*

	 * Whether to align timer windows across all CPUs. When

	 * use_sched_load is true, this flag is ignored and windows

	 * will always be aligned.

	 */

	bool align_windows;



	/*

	 * Stay at max freq for at least max_freq_hysteresis before dropping

	 * frequency.
@@ -144,9 +151,16 @@ static u64 round_to_nw_start(u64 jif, 
			     struct cpufreq_interactive_tunables *tunables)

{

	unsigned long step = usecs_to_jiffies(tunables->timer_rate);

	u64 ret;



	if (tunables->use_sched_load || tunables->align_windows) {

		do_div(jif, step);

	return (jif + 1) * step;

		ret = (jif + 1) * step;

	} else {

		ret = jiffies + usecs_to_jiffies(tunables->timer_rate);

	}



	return ret;

}



static inline int set_window_helper(
@@ -966,6 +980,7 @@ static ssize_t store_##file_name( \ 
	return count;							\

}

show_store_one(max_freq_hysteresis);

show_store_one(align_windows);



static ssize_t show_go_hispeed_load(struct cpufreq_interactive_tunables

		*tunables, char *buf)
@@ -1346,6 +1361,7 @@ show_store_gov_pol_sys(io_is_busy); 
show_store_gov_pol_sys(use_sched_load);

show_store_gov_pol_sys(use_migration_notif);

show_store_gov_pol_sys(max_freq_hysteresis);

show_store_gov_pol_sys(align_windows);



#define gov_sys_attr_rw(_name)						\

static struct global_attr _name##_gov_sys =				\
@@ -1372,6 +1388,7 @@ gov_sys_pol_attr_rw(io_is_busy); 
gov_sys_pol_attr_rw(use_sched_load);

gov_sys_pol_attr_rw(use_migration_notif);

gov_sys_pol_attr_rw(max_freq_hysteresis);

gov_sys_pol_attr_rw(align_windows);



static struct global_attr boostpulse_gov_sys =

	__ATTR(boostpulse, 0200, NULL, store_boostpulse_gov_sys);
@@ -1395,6 +1412,7 @@ static struct attribute *interactive_attributes_gov_sys[] = { 
	&use_sched_load_gov_sys.attr,

	&use_migration_notif_gov_sys.attr,

	&max_freq_hysteresis_gov_sys.attr,

	&align_windows_gov_sys.attr,

	NULL,

};
@@ -1419,6 +1437,7 @@ static struct attribute *interactive_attributes_gov_pol[] = { 
	&use_sched_load_gov_pol.attr,

	&use_migration_notif_gov_pol.attr,

	&max_freq_hysteresis_gov_pol.attr,

	&align_windows_gov_pol.attr,

	NULL,

};
@@ -1492,6 +1511,7 @@ static struct cpufreq_interactive_tunables *alloc_tunable( 
	tunables->timer_rate = DEFAULT_TIMER_RATE;

	tunables->boostpulse_duration_val = DEFAULT_MIN_SAMPLE_TIME;

	tunables->timer_slack_val = DEFAULT_TIMER_SLACK;

	tunables->align_windows = true;



	spin_lock_init(&tunables->target_loads_lock);

	spin_lock_init(&tunables->above_hispeed_delay_lock);