Commit de1474b4 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Peter Zijlstra
Browse files

sched: Extract __schedule_loop() 



There are currently two implementations of this basic __schedule()
loop, and there is soon to be a third.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230908162254.999499-4-bigeasy@linutronix.de
parent af9f0063

kernel/sched/core.c

+11 −10
Original line number Diff line number Diff line
@@ -6770,16 +6770,21 @@ static void sched_update_worker(struct task_struct *tsk) 
	}

}



asmlinkage __visible void __sched schedule(void)

static __always_inline void __schedule_loop(unsigned int sched_mode)

{

	struct task_struct *tsk = current;



	sched_submit_work(tsk);

	do {

		preempt_disable();

		__schedule(SM_NONE);

		__schedule(sched_mode);

		sched_preempt_enable_no_resched();

	} while (need_resched());

}



asmlinkage __visible void __sched schedule(void)

{

	struct task_struct *tsk = current;



	sched_submit_work(tsk);

	__schedule_loop(SM_NONE);

	sched_update_worker(tsk);

}

EXPORT_SYMBOL(schedule);
@@ -6843,11 +6848,7 @@ void __sched schedule_preempt_disabled(void) 
#ifdef CONFIG_PREEMPT_RT

void __sched notrace schedule_rtlock(void)

{

	do {

		preempt_disable();

		__schedule(SM_RTLOCK_WAIT);

		sched_preempt_enable_no_resched();

	} while (need_resched());

	__schedule_loop(SM_RTLOCK_WAIT);

}

NOKPROBE_SYMBOL(schedule_rtlock);

#endif