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Commit bc8c7881 authored by Shaleen Agrawal's avatar Shaleen Agrawal
Browse files

sched: walt: Improve the Scheduler 



This change is for general scheduler improvement.

Change-Id: Ib6b9738193cba9be2b3de582c43e3f7497a516bb
Signed-off-by: default avatarShaleen Agrawal <shalagra@codeaurora.org>
parent 42372239

kernel/sched/core.c

+2 −33
Original line number Diff line number Diff line
@@ -6979,6 +6979,8 @@ void __init sched_init(void) 


	init_uclamp();



	walt_init_sched_boost(&root_task_group);



	scheduler_running = 1;

}
@@ -7185,38 +7187,6 @@ static inline struct task_group *css_tg(struct cgroup_subsys_state *css) 
}



#if defined(CONFIG_SCHED_WALT) && defined(CONFIG_UCLAMP_TASK_GROUP)

static inline void walt_init_sched_boost(struct task_group *tg)

{

	tg->sched_boost_no_override = false;

	tg->sched_boost_enabled = true;

	tg->colocate = false;

	tg->colocate_update_disabled = false;

}



void update_cgroup_boost_settings(void)

{

	struct task_group *tg;



	rcu_read_lock();

	list_for_each_entry_rcu(tg, &task_groups, list) {

		if (tg->sched_boost_no_override)

			continue;



		tg->sched_boost_enabled = false;

	}

	rcu_read_unlock();

}



void restore_cgroup_boost_settings(void)

{

	struct task_group *tg;



	rcu_read_lock();

	list_for_each_entry_rcu(tg, &task_groups, list)

		tg->sched_boost_enabled = true;

	rcu_read_unlock();

}



static void walt_schedgp_attach(struct cgroup_taskset *tset)

{

	struct task_struct *task;
@@ -7272,7 +7242,6 @@ static int sched_colocate_write(struct cgroup_subsys_state *css, 
	return 0;

}

#else

static inline void walt_init_sched_boost(struct task_group *tg) { }

static void walt_schedgp_attach(struct cgroup_taskset *tset) { }

#endif /* CONFIG_SCHED_WALT */

kernel/sched/sched.h

+6 −4
Original line number Diff line number Diff line
@@ -3051,8 +3051,6 @@ static inline bool task_sched_boost(struct task_struct *p) 
}



extern int sync_cgroup_colocation(struct task_struct *p, bool insert);

extern void update_cgroup_boost_settings(void);

extern void restore_cgroup_boost_settings(void);

#else

static inline bool

same_schedtg(struct task_struct *tsk1, struct task_struct *tsk2)
@@ -3065,8 +3063,6 @@ static inline bool task_sched_boost(struct task_struct *p) 
	return true;

}



static inline void update_cgroup_boost_settings(void) { }

static inline void restore_cgroup_boost_settings(void) { }

#endif



extern int alloc_related_thread_groups(void);
@@ -3363,3 +3359,9 @@ extern struct task_struct *find_process_by_pid(pid_t pid); 


extern void enqueue_task_core(struct rq *rq, struct task_struct *p, int flags);

extern void dequeue_task_core(struct rq *rq, struct task_struct *p, int flags);



#if defined(CONFIG_SCHED_WALT) && defined(CONFIG_UCLAMP_TASK_GROUP)

extern void walt_init_sched_boost(struct task_group *tg);

#else

static inline void walt_init_sched_boost(struct task_group *tg) {}

#endif

kernel/sched/walt.c

+5 −0
Original line number Diff line number Diff line
@@ -216,4 +216,9 @@ void __weak update_cluster_topology(void) { } 
void __weak init_clusters(void) { }



void __weak walt_sched_init_rq(struct rq *rq) { }



void __weak walt_update_cluster_topology(void) { }



#if defined(CONFIG_UCLAMP_TASK_GROUP)

void __weak walt_init_sched_boost(struct task_group *tg) { }

#endif