From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753832Ab0EWJNQ (ORCPT ); Sun, 23 May 2010 05:13:16 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:47308 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752865Ab0EWJNP (ORCPT ); Sun, 23 May 2010 05:13:15 -0400 Date: Sun, 23 May 2010 11:13:06 +0200 From: Ingo Molnar To: Tejun Heo Cc: peterz@infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCHSET sched/core] sched: prepare for cmwq Message-ID: <20100523091306.GE25524@elte.hu> References: <1273747705-7829-1-git-send-email-tj@kernel.org> <4BF1CD92.9030800@kernel.org> <4BF689DD.2090306@kernel.org> <20100523090544.GB25524@elte.hu> <4BF8F0A4.5060608@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4BF8F0A4.5060608@kernel.org> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0012] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Tejun Heo wrote: > Hello, Ingo. > > On 05/23/2010 11:05 AM, Ingo Molnar wrote: > > IIRC these changes are for some sort of speedup for btrfs, > > right? > > Eh.... What are you talking about? These are for cmwq. > The "must unify scheduler notification hooks", "nah, if > always enabled, go with hard coded hooks" stuff. ... which is then used for the concurrency-managed workqueue feature, which is then used for a BTRFS speedup, right? ( If that's not the plan then color me confused :) Thanks, Ingo