diff mbox series

[RT,3/8] sched: migrate_enable: Remove __schedule() call

Message ID 20200306184052.169498175@goodmis.org
State New
Headers show
Series [RT,1/8] userfaultfd: Use a seqlock instead of seqcount | expand

Commit Message

Steven Rostedt March 6, 2020, 6:40 p.m. UTC 
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 mbox series

Patch

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: