linux-kernel - Re: [PATCH] cpufreq, store_scaling_governor requires policy->rwsem to be held for duration of changing governors [v2]

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Message-ID: <CAKohpo=M6ktWnni10zHVPSMU7iGJF1MAaBe-hbUmoDvcFoDyWw@mail.gmail.com>
Date:	Thu, 14 Aug 2014 09:49:28 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Prarit Bhargava <prarit@...hat.com>
Cc:	Stephen Boyd <sboyd@...eaurora.org>,
	Saravana Kannan <skannan@...eaurora.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lenny Szubowicz <lszubowi@...hat.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>
Subject: Re: [PATCH] cpufreq, store_scaling_governor requires policy->rwsem to
 be held for duration of changing governors [v2]

On 13 August 2014 15:28, Prarit Bhargava <prarit@...hat.com> wrote:
> Anywhere from 2-4 sockets, 8 - 240 cpus (depending on # of sockets), x86 arch.

That's what. We know that it does happen on multi cluster systems
and I was reproducing it on a single cluster one. i.e. all CPUs share
clock line.
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