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Commit 04717e47 authored by Pavankumar Kondeti's avatar Pavankumar Kondeti
Browse files

sched: Improve the scheduler 



This change is for general scheduler improvement.

Change-Id: I2d3c30440ff69f87dc975b33df9d0531115375ae
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
parent 860a87cc

kernel/sched/boost.c

+7 −13
Original line number Diff line number Diff line
@@ -23,8 +23,10 @@ 
 * boost is responsible for disabling it as well.

 */



unsigned int sysctl_sched_boost;

static enum sched_boost_policy boost_policy;

unsigned int sysctl_sched_boost; /* To/from userspace */

unsigned int sched_boost_type; /* currently activated sched boost */

enum sched_boost_policy boost_policy;



static enum sched_boost_policy boost_policy_dt = SCHED_BOOST_NONE;

static DEFINE_MUTEX(boost_mutex);

static int boost_refcount[MAX_NUM_BOOST_TYPE];
@@ -60,11 +62,6 @@ static void set_boost_policy(int type) 
	boost_policy = SCHED_BOOST_ON_ALL;

}



enum sched_boost_policy sched_boost_policy(void)

{

	return boost_policy;

}



static bool verify_boost_params(int type)

{

	return type >= RESTRAINED_BOOST_DISABLE && type <= RESTRAINED_BOOST;
@@ -159,8 +156,10 @@ static void _sched_set_boost(int type) 
	else

		type = NO_BOOST;



	set_boost_policy(type);

	sched_boost_type = type;

	sysctl_sched_boost = type;



	set_boost_policy(type);

	trace_sched_set_boost(type);

}
@@ -217,8 +216,3 @@ int sched_boost_handler(struct ctl_table *table, int write, 
	mutex_unlock(&boost_mutex);

	return ret;

}
 


int sched_boost(void)

{

	return sysctl_sched_boost;

}

kernel/sched/fair.c

+1 −1
Original line number Diff line number Diff line
@@ -7981,7 +7981,7 @@ static inline int wake_to_idle(struct task_struct *p) 
#ifdef CONFIG_SCHED_WALT

static inline bool is_task_util_above_min_thresh(struct task_struct *p)

{

	unsigned int threshold = (sysctl_sched_boost == CONSERVATIVE_BOOST) ?

	unsigned int threshold = (sched_boost() == CONSERVATIVE_BOOST) ?

			sysctl_sched_min_task_util_for_boost :

			sysctl_sched_min_task_util_for_colocation;

kernel/sched/sched.h

+13 −7
Original line number Diff line number Diff line
@@ -2524,11 +2524,6 @@ enum sched_boost_policy { 
	SCHED_BOOST_ON_ALL,

};



#define NO_BOOST 0

#define FULL_THROTTLE_BOOST 1

#define CONSERVATIVE_BOOST 2

#define RESTRAINED_BOOST 3



/*

 * Returns the rq capacity of any rq in a group. This does not play

 * well with groups where rq capacity can change independently.
@@ -2831,7 +2826,18 @@ static inline int same_freq_domain(int src_cpu, int dst_cpu) 


#define	CPU_RESERVED	1



extern int sched_boost(void);

extern enum sched_boost_policy boost_policy;

static inline enum sched_boost_policy sched_boost_policy(void)

{

	return boost_policy;

}



extern unsigned int sched_boost_type;

static inline int sched_boost(void)

{

	return sched_boost_type;

}



extern int preferred_cluster(struct sched_cluster *cluster,

						struct task_struct *p);

extern struct sched_cluster *rq_cluster(struct rq *rq);
@@ -2939,7 +2945,7 @@ static inline enum sched_boost_policy task_boost_policy(struct task_struct *p) 
		 * Filter out tasks less than min task util threshold

		 * under conservative boost.

		 */

		if (sysctl_sched_boost == CONSERVATIVE_BOOST &&

		if (sched_boost() == CONSERVATIVE_BOOST &&

				task_util(p) <=

				sysctl_sched_min_task_util_for_boost)

			policy = SCHED_BOOST_NONE;

kernel/sched/walt.c

+1 −1
Original line number Diff line number Diff line
@@ -3129,7 +3129,7 @@ static void walt_update_coloc_boost_load(void) 
	struct sched_cluster *cluster;



	if (!sysctl_sched_little_cluster_coloc_fmin_khz ||

			sysctl_sched_boost == CONSERVATIVE_BOOST)

			sched_boost() == CONSERVATIVE_BOOST)

		return;



	grp = lookup_related_thread_group(DEFAULT_CGROUP_COLOC_ID);