This is a note to let you know that I've just added the patch titled
cpufreq: Do not clear real_cpus mask on policy init
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cpufreq-do-not-clear-real_cpus-mask-on-policy-init.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Nov 6 10:07:35 CET 2017
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Date: Sat, 7 Oct 2017 22:36:46 +0000
Subject: cpufreq: Do not clear real_cpus mask on policy init
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
[ Upstream commit f451014692ae34e587b00de6745e16661cf734d8 ]
If new_policy is set in cpufreq_online(), the policy object has just
been created and its real_cpus mask has been zeroed on allocation,
and the driver's ->init() callback should not touch it.
It doesn't need to be cleared again, so don't do that.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/cpufreq/cpufreq.c | 2 --
1 file changed, 2 deletions(-)
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1172,8 +1172,6 @@ static int cpufreq_online(unsigned int c
if (new_policy) {
/* related_cpus should at least include policy->cpus. */
cpumask_copy(policy->related_cpus, policy->cpus);
- /* Clear mask of registered CPUs */
- cpumask_clear(policy->real_cpus);
}
/*
Patches currently in stable-queue which might be from rafael.j.wysocki@xxxxxxxxx are
queue-4.9/pm-wakeirq-report-a-wakeup_event-on-dedicated-wekup-irq.patch
queue-4.9/cpufreq-do-not-clear-real_cpus-mask-on-policy-init.patch