linux-kernel - Re: [PATCH] cpufreq: Don't destroy/realloc policy/sysfs on hotplug/suspend

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Message-ID: <CAKohpokynnTttD7Wbq8uBB4SXK9xFEBdRJ2ozhMQscyvq69xRw@mail.gmail.com>
Date:	Thu, 24 Jul 2014 10:34:58 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Saravana Kannan <skannan@...eaurora.org>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Todd Poynor <toddpoynor@...gle.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] cpufreq: Don't destroy/realloc policy/sysfs on hotplug/suspend

On 24 July 2014 08:32, Saravana Kannan <skannan@...eaurora.org> wrote:
> Ok, I think I've figured this out. But one question. Is it possible to
> physically remove one CPU in a bunch of "related cpus" without also
> unplugging the rest? Put another way, can you unplug one core from a
> cluster?

Are we talking about doing this here:

echo 0 > /sys/devices/system/cpu/cpuX/online      ??

If yes, then what's the confusion all about? Yes we do it all the time.
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