From: Peter Zijlstra <peterz@infradead.org>
To: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>,
lenb@kernel.org, rjw@rjwysocki.net, linux-acpi@vger.kernel.org,
linux-kernel@vger.kernel.org, shaohua.li@intel.com,
rui.zhang@intel.com, Mike Galbraith <bitbucket@online.de>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
hpa@zytor.com
Subject: Re: [PATCH] x86, acpi, idle: Restructure the mwait idle routines
Date: Wed, 20 Nov 2013 17:33:13 +0100 [thread overview]
Message-ID: <20131120163313.GR10022@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <528CE24F.5000604@linux.intel.com>
On Wed, Nov 20, 2013 at 08:24:47AM -0800, Arjan van de Ven wrote:
> On 11/20/2013 2:58 AM, Peter Zijlstra wrote:
> >So pretty silly actually; you cannot do a store (any store) in between
> >monitor and mwait.
>
> you can
> just not to the cacheline you are watching (or things that alias with that)
Ah indeed, the thread_info::status is in the same cacheline.
next prev parent reply other threads:[~2013-11-20 16:33 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-19 9:00 acpi_pad mwait usage Peter Zijlstra
2013-11-19 9:08 ` Peter Zijlstra
2013-11-19 11:31 ` [PATCH] x86, acpi, idle: Restructure the mwait idle routines Peter Zijlstra
2013-11-19 13:06 ` Rafael J. Wysocki
2013-11-19 13:21 ` Mike Galbraith
2013-11-19 14:22 ` Arjan van de Ven
2013-11-19 14:46 ` Peter Zijlstra
2013-11-19 14:51 ` Peter Zijlstra
2013-11-19 15:13 ` Peter Zijlstra
2013-11-19 21:06 ` Jacob Pan
2013-11-20 10:28 ` Peter Zijlstra
2013-11-20 10:58 ` Peter Zijlstra
2013-11-20 16:24 ` Arjan van de Ven
2013-11-20 16:33 ` Peter Zijlstra [this message]
2013-11-20 16:38 ` Arjan van de Ven
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