PATCH] cpufreq: Do not clear real_cpus mask on policy init

From	"Rafael J. Wysocki" <rjw@rjwysocki.net>
Newsgroups	linux.kernel
Subject	PATCH] cpufreq: Do not clear real_cpus mask on policy init
Date	2017-02-13 13:50 +0100
Message-ID	<taoeR-3KT-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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@intel.com>
---
 drivers/cpufreq/cpufreq.c |    2 --
 1 file changed, 2 deletions(-)

Index: linux-pm/drivers/cpufreq/cpufreq.c
===================================================================
--- linux-pm.orig/drivers/cpufreq/cpufreq.c
+++ linux-pm/drivers/cpufreq/cpufreq.c
@@ -1166,8 +1166,6 @@ 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);
 	}
 
 	/*

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PATCH] cpufreq: Do not clear real_cpus mask on policy init "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2017-02-13 13:50 +0100
  Re: PATCH] cpufreq: Do not clear real_cpus mask on policy init Viresh Kumar <viresh.kumar@linaro.org> - 2017-02-14 04:50 +0100

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