From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755885Ab2ACXAJ (ORCPT <rfc822;w@1wt.eu>);
	Tue, 3 Jan 2012 18:00:09 -0500
Received: from mail.linuxfoundation.org ([140.211.169.12]:46389 "EHLO
	mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1755724Ab2ACWh4 (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Tue, 3 Jan 2012 17:37:56 -0500
Date: Tue, 3 Jan 2012 14:37:54 -0800
From: Andrew Morton <akpm@linux-foundation.org>
To: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>, linux-kernel@vger.kernel.org,
        Christoph Lameter <cl@linux.com>, Chris Metcalf <cmetcalf@tilera.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Frederic Weisbecker <fweisbec@gmail.com>, linux-mm@kvack.org,
        Pekka Enberg <penberg@kernel.org>, Matt Mackall <mpm@selenic.com>,
        Sasha Levin <levinsasha928@gmail.com>, Rik van Riel <riel@redhat.com>,
        Andi Kleen <andi@firstfloor.org>, Mel Gorman <mel@csn.ul.ie>,
        Alexander Viro <viro@zeniv.linux.org.uk>, Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH v5 8/8] mm: add vmstat counters for tracking PCP drains
Message-Id: <20120103143754.f2640d24.akpm@linux-foundation.org>
In-Reply-To: <CAOtvUMc259XZ5BdOqys3Kbv_u=Qa0matnuFyGrJhMPLtRKKkUA@mail.gmail.com>
References: <1325499859-2262-1-git-send-email-gilad@benyossef.com>
	<1325499859-2262-9-git-send-email-gilad@benyossef.com>
	<4F033F44.6020403@gmail.com>
	<CAOtvUMc259XZ5BdOqys3Kbv_u=Qa0matnuFyGrJhMPLtRKKkUA@mail.gmail.com>
X-Mailer: Sylpheed 3.0.2 (GTK+ 2.20.1; x86_64-pc-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Tue, 3 Jan 2012 21:00:17 +0200
Gilad Ben-Yossef <gilad@benyossef.com> wrote:

> > NAK.
> >
> > PCP_GLOBAL_IPI_SAVED is only useful at development phase. I can't
> > imagine normal admins use it.
> 
> As the description explains, the purpose of the patch is to show why i
> claim the previous
> patch is useful. I did not meant it to be applied to mainline.

Right.

The thing to do is to use this patch to determine the effectiveness of
the preceding patchset and then present a summary of the results in the
other patch's changelog.  This is precisely what you did and the
results look pretty good.