Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932082Ab0F2P45 (ORCPT ); Tue, 29 Jun 2010 11:56:57 -0400 Received: from hera.kernel.org ([140.211.167.34]:33887 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755801Ab0F2P44 (ORCPT ); Tue, 29 Jun 2010 11:56:56 -0400 Message-ID: <4C2A176F.1090101@kernel.org> Date: Tue, 29 Jun 2010 17:55:27 +0200 From: Tejun Heo User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100317 SUSE/3.0.4-1.1.1 Thunderbird/3.0.4 MIME-Version: 1.0 To: Frederic Weisbecker CC: torvalds@linux-foundation.org, mingo@elte.hu, linux-kernel@vger.kernel.org, jeff@garzik.org, akpm@linux-foundation.org, rusty@rustcorp.com.au, cl@linux-foundation.org, dhowells@redhat.com, arjan@linux.intel.com, oleg@redhat.com, axboe@kernel.dk, dwalker@codeaurora.org, stefanr@s5r6.in-berlin.de, florian@mickler.org, andi@firstfloor.org, mst@redhat.com, randy.dunlap@oracle.com, Arjan van de Ven Subject: Re: [PATCH 34/35] async: use workqueue for worker pool References: <1277759063-24607-1-git-send-email-tj@kernel.org> <1277759063-24607-35-git-send-email-tj@kernel.org> <20100628225513.GB10104@nowhere> <4C299FD8.7030904@kernel.org> <20100629121855.GA5318@nowhere> <4C2A1558.7060007@kernel.org> <20100629155228.GK5318@nowhere> In-Reply-To: <20100629155228.GK5318@nowhere> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Tue, 29 Jun 2010 15:55:35 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 821 Lines: 24 Hello, On 06/29/2010 05:52 PM, Frederic Weisbecker wrote: >>> If there is a question of slow ports to probe, then cmwq wouldn't seem the >>> right thing here, as it only forks when we go to sleep. >> >> I lost you here. If something during boot has to burn cpu cycles >> (which it shouldn't, really), it has to burn cpu cycles and having >> multiple concurent threads won't help anything. > > It would on SMP. Oh, I see. Parallel cpu hogs. We don't have such users for async and I think using padata would be the right solution for those situations. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/