Commit 4ff34ad3 authored by Uros Bizjak's avatar Uros Bizjak Committed by Ingo Molnar
Browse files

sched/core: Use do-while instead of for loop in set_nr_if_polling() 



Use equivalent do-while loop instead of infinite for loop.

There are no asm code changes.

Signed-off-by: default avatarUros Bizjak <ubizjak@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230228161426.4508-1-ubizjak@gmail.com
parent c0490bc9

kernel/sched/core.c

+3 −4
Original line number Diff line number Diff line
@@ -919,14 +919,13 @@ static bool set_nr_if_polling(struct task_struct *p) 
	struct thread_info *ti = task_thread_info(p);

	typeof(ti->flags) val = READ_ONCE(ti->flags);



	for (;;) {

	do {

		if (!(val & _TIF_POLLING_NRFLAG))

			return false;

		if (val & _TIF_NEED_RESCHED)

			return true;

		if (try_cmpxchg(&ti->flags, &val, val | _TIF_NEED_RESCHED))

			break;

	}

	} while (!try_cmpxchg(&ti->flags, &val, val | _TIF_NEED_RESCHED));



	return true;

}