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sched: Extract __schedule_loop()

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

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230908162254.999499-4-bigeasy@linutronix.de
This commit is contained in:
Thomas Gleixner 2023-09-08 18:22:50 +02:00 committed by Peter Zijlstra
parent af9f006393
commit de1474b46d
1 changed files with 11 additions and 10 deletions
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21
kernel/sched/core.c
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@ -6770,16 +6770,21 @@ static void sched_update_worker(struct task_struct *tsk)
}
}
static __always_inline void __schedule_loop(unsigned int sched_mode)
{
do {
preempt_disable();
__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);
do {
preempt_disable();
__schedule(SM_NONE);
sched_preempt_enable_no_resched();
} while (need_resched());
__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