Messages in this thread Patch in this message | | | Date | Fri, 06 Mar 2020 13:40:38 -0500 | From | Steven Rostedt <> | Subject | [PATCH RT 3/8] sched: migrate_enable: Remove __schedule() call |
| |
4.19.106-rt45-rc1 stable review patch. If anyone has any objections, please let me know.
------------------
From: Scott Wood <swood@redhat.com>
[ Upstream commit b8162e61e9a33bd1de6452eb838fbf50a93ddd9a ]
We can rely on preempt_enable() to schedule. Besides simplifying the code, this potentially allows sequences such as the following to be permitted:
migrate_disable(); preempt_disable(); migrate_enable(); preempt_enable();
Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Scott Wood <swood@redhat.com> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> --- kernel/sched/core.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index c4290fa5c0b6..02e51c74e0bf 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7351,7 +7351,6 @@ void migrate_enable(void) stop_one_cpu_nowait(task_cpu(p), migration_cpu_stop, arg, work); tlb_migrate_finish(p->mm); - __schedule(true); } out: -- 2.25.0
| |