linux-kernel - Re: [PATCH] freezer: use smp barriers

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Message-ID: <20110425083832.GA3770@elf.ucw.cz>
Date:	Mon, 25 Apr 2011 10:38:32 +0200
From:	Pavel Machek <pavel@....cz>
To:	Mike Frysinger <vapier@...too.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org,
	linux-pm@...ts.linux-foundation.org
Subject: Re: [PATCH] freezer: use smp barriers

On Mon 2011-04-25 03:31:05, Mike Frysinger wrote:
> The freezer processes are dealing with multiple threads running
> simultaneously, and on a UP system, the memory reads/writes do
> not need barriers to keep things in sync.  These are only needed
> on SMP systems, so use SMP barriers instead.
> 
> Signed-off-by: Mike Frysinger <vapier@...too.org>

ACK.

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