linux-kernel - Re: [PATCH] mm: Delete non-atomic mm counter implementation

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Message-ID: <20110429090236.6f2d8e61@mfleming-mobl1.ger.corp.intel.com>
Date:	Fri, 29 Apr 2011 09:02:36 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Matt Fleming <matt.fleming@...ux.intel.com>
Subject: Re: [PATCH] mm: Delete non-atomic mm counter implementation

On Thu, 28 Apr 2011 09:08:57 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:
 
> now mm_counters are update in per-thread and removing non-atomic
> will not have big impact in performance, I hope. 
> 
> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

Thanks!

Note that this patch doesn't enable per-thread counters for the
non-USE_SPLIT_PTLOCKS case; SPLIT_RSS_COUNTING is still only enabled if
USE_SPLIT_PTLOCKS is on.

-- 
Matt Fleming, Intel Open Source Technology Center
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