sched: remove precise CPU load calculations #2 (53df556e) · Commits · e / devices / android_kernel_xiaomi_sm6125

kernel/sched.c

+1 −31

Original line number	Diff line number	Diff line
		@@ -173,8 +173,6 @@ struct rt_prio_array {

		struct load_stat {
		struct load_weight load;
		u64 load_update_start, load_update_last;
		unsigned long delta_fair, delta_exec, delta_stat;
		};

		/* CFS-related fields in a runqueue */
		@@ -793,15 +791,6 @@ static int balance_tasks(struct rq this_rq, int this_cpu, struct rq busiest,

		#define sched_class_highest (&rt_sched_class)

		static void __update_curr_load(struct rq rq, struct load_stat ls)
		{
		if (rq->curr != rq->idle && ls->load.weight) {
		ls->delta_exec += ls->delta_stat;
		ls->delta_fair += calc_delta_fair(ls->delta_stat, &ls->load);
		ls->delta_stat = 0;
		}
		}

		/*
		* Update delta_exec, delta_fair fields for rq.
		*
		@@ -817,31 +806,13 @@ static void __update_curr_load(struct rq rq, struct load_stat ls)
		* This function is called /before/ updating rq->ls.load
		* and when switching tasks.
		*/
		static void update_curr_load(struct rq *rq)
		{
		struct load_stat *ls = &rq->ls;
		u64 start;

		start = ls->load_update_start;
		ls->load_update_start = rq->clock;
		ls->delta_stat += rq->clock - start;
		/*
		* Stagger updates to ls->delta_fair. Very frequent updates
		* can be expensive.
		*/
		if (ls->delta_stat)
		__update_curr_load(rq, ls);
		}

		static inline void inc_load(struct rq rq, const struct task_struct p)
		{
		update_curr_load(rq);
		update_load_add(&rq->ls.load, p->se.load.weight);
		}

		static inline void dec_load(struct rq rq, const struct task_struct p)
		{
		update_curr_load(rq);
		update_load_sub(&rq->ls.load, p->se.load.weight);
		}

		@@ -1972,8 +1943,7 @@ unsigned long nr_active(void)
		*/
		static void update_cpu_load(struct rq *this_rq)
		{
		unsigned long total_load = this_rq->ls.load.weight;
		unsigned long this_load = total_load;
		unsigned long this_load = this_rq->ls.load.weight;
		int i, scale;

		this_rq->nr_load_updates++;