Commit 37cb049e authored by Tejun Heo's avatar Tejun Heo
Browse files

sched_ext: Remove sched_class->switch_class() 



With sched_ext converted to use put_prev_task() for class switch detection,
there's no user of switch_class() left. Drop it.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
parent f422316d

kernel/sched/core.c

+1 −11
Original line number Diff line number Diff line
@@ -5965,22 +5965,12 @@ __pick_next_task(struct rq *rq, struct task_struct *prev, struct rq_flags *rf) 
	for_each_active_class(class) {

		if (class->pick_next_task) {

			p = class->pick_next_task(rq, prev);

			if (p) {

				const struct sched_class *prev_class = prev->sched_class;



				if (class != prev_class && prev_class->switch_class)

					prev_class->switch_class(rq, p);

			if (p)

				return p;

			}

		} else {

			p = class->pick_task(rq);

			if (p) {

				const struct sched_class *prev_class = prev->sched_class;



				put_prev_set_next_task(rq, prev, p);



				if (class != prev_class && prev_class->switch_class)

					prev_class->switch_class(rq, p);

				return p;

			}

		}

kernel/sched/sched.h

+0 −2
Original line number Diff line number Diff line
@@ -2385,8 +2385,6 @@ struct sched_class { 
	void (*put_prev_task)(struct rq *rq, struct task_struct *p, struct task_struct *next);

	void (*set_next_task)(struct rq *rq, struct task_struct *p, bool first);



	void (*switch_class)(struct rq *rq, struct task_struct *next);



#ifdef CONFIG_SMP

	int  (*select_task_rq)(struct task_struct *p, int task_cpu, int flags);