2020-04-21 20:13:52 +00:00
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From 73dfb6f21b436b1f96516f951ca173e0828562c6 Mon Sep 17 00:00:00 2001
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2020-03-28 12:59:50 +00:00
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From: Scott Wood <swood@redhat.com>
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Date: Fri, 24 Jan 2020 06:11:47 -0500
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2020-04-21 20:13:52 +00:00
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Subject: [PATCH 318/325] sched: migrate_enable: Remove __schedule() call
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.115-rt48.tar.xz
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2020-03-28 12:59:50 +00:00
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[ Upstream commit b8162e61e9a33bd1de6452eb838fbf50a93ddd9a ]
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We can rely on preempt_enable() to schedule. Besides simplifying the
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code, this potentially allows sequences such as the following to be
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permitted:
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migrate_disable();
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preempt_disable();
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migrate_enable();
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preempt_enable();
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Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Signed-off-by: Scott Wood <swood@redhat.com>
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Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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---
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kernel/sched/core.c | 1 -
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1 file changed, 1 deletion(-)
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diff --git a/kernel/sched/core.c b/kernel/sched/core.c
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index c4290fa5c0b6..02e51c74e0bf 100644
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--- a/kernel/sched/core.c
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+++ b/kernel/sched/core.c
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@@ -7351,7 +7351,6 @@ void migrate_enable(void)
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stop_one_cpu_nowait(task_cpu(p), migration_cpu_stop,
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arg, work);
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tlb_migrate_finish(p->mm);
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- __schedule(true);
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}
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out:
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--
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2020-04-09 19:44:24 +00:00
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2.25.1
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2020-03-28 12:59:50 +00:00
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