From: Peter Zijlstra <peterz@infradead.org>
To: Stephane Eranian <eranian@google.com>
Cc: Lin Ming <ming.m.lin@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
"mingo@elte.hu" <mingo@elte.hu>,
"Kleen, Andi" <andi.kleen@intel.com>
Subject: Re: perf_events: questions about cpu_has_ht_siblings() and offcore support
Date: Fri, 22 Apr 2011 16:47:58 +0200 [thread overview]
Message-ID: <1303483678.4865.0.camel@laptop> (raw)
In-Reply-To: <BANLkTinxzH-3uXXfj4ALzkM48FnQ+shdvg@mail.gmail.com>
On Fri, 2011-04-22 at 16:41 +0200, Stephane Eranian wrote:
> I assume that's because hotplug
> cpu is inherently serialized. You cannot have a CPU going offline
> and one going online at the same time. is that right?
Exactly, that's all serialized under the hotpug mutex
next prev parent reply other threads:[~2011-04-22 14:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-22 12:59 perf_events: questions about cpu_has_ht_siblings() and offcore support Stephane Eranian
2011-04-22 13:26 ` Lin Ming
2011-04-22 13:46 ` Stephane Eranian
2011-04-22 14:31 ` Lin Ming
2011-04-22 14:41 ` Stephane Eranian
2011-04-22 14:47 ` Peter Zijlstra [this message]
2011-04-22 14:48 ` Stephane Eranian
2011-04-22 15:03 ` Lin Ming
2011-04-22 15:05 ` Stephane Eranian
2011-04-22 15:30 ` Lin Ming
2011-04-22 16:21 ` Stephane Eranian
2011-04-22 14:53 ` Stephane Eranian
2011-04-22 20:42 ` Peter Zijlstra
2011-04-22 22:15 ` Stephane Eranian
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