From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>,
Peter Zijlstra <peterz@infradead.org>,
Vincent Guittot <vincent.guittot@linaro.org>,
lkml <linux-kernel@vger.kernel.org>,
linux-hotplug@vger.kernel.org,
Frederic Weisbecker <fweisbec@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
amit.kucheria@linaro.org, Rusty Russell <rusty@rustcorp.com.au>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH V5 2/2] tracing, perf : add cpu hotplug trace events
Date: Thu, 24 Feb 2011 21:04:31 +0000 [thread overview]
Message-ID: <20110224210431.7a6bba68@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <alpine.LFD.2.00.1102242148400.2701@localhost6.localdomain6>
> That's the equivalent of physical hotplug, but we still have all the
> memory state around, so it is possible from idle, when we have the
All sorts of other state goes walking as well though - on die device
state for example like the GPU context may well also evaporate or
disappear except for the minimum needed for scanout.
It's not just about the CPU its a system (albeit a SoC in most cases)
going to sleep lock stock and barrel except for IRQ notifications, and in
some cases things like offloaded audio playback.
Alan
next prev parent reply other threads:[~2011-02-24 21:02 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-24 17:33 Vincent Guittot
2011-02-24 18:40 ` Thomas Gleixner
2011-02-28 13:36 ` Vincent Guittot
2011-03-02 10:08 ` Thomas Gleixner
2011-03-02 19:02 ` Vincent Guittot
2011-03-02 21:12 ` Thomas Gleixner
2011-02-24 18:46 ` Peter Zijlstra
2011-02-24 20:11 ` Alan Cox
2011-02-24 20:16 ` Thomas Gleixner
2011-02-24 20:24 ` Nicolas Pitre
2011-02-24 20:30 ` Peter Zijlstra
2011-02-24 20:40 ` Alan Cox
2011-02-24 20:40 ` Nicolas Pitre
2011-02-24 20:49 ` Peter Zijlstra
2011-02-24 20:49 ` Thomas Gleixner
2011-02-24 21:04 ` Alan Cox [this message]
2011-02-24 21:12 ` Thomas Gleixner
2011-02-24 21:17 ` Peter Zijlstra
2011-02-24 21:33 ` Thomas Gleixner
2011-02-24 20:47 ` Thomas Gleixner
2011-02-24 20:58 ` Peter Zijlstra
2011-02-24 21:03 ` Thomas Gleixner
2011-02-24 21:11 ` Paul E. McKenney
2011-02-24 20:27 ` Peter Zijlstra
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