Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764138AbXHHL7j (ORCPT ); Wed, 8 Aug 2007 07:59:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753490AbXHHL71 (ORCPT ); Wed, 8 Aug 2007 07:59:27 -0400 Received: from rv-out-0910.google.com ([209.85.198.190]:24584 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754263AbXHHL7Z (ORCPT ); Wed, 8 Aug 2007 07:59:25 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Xzt7WQTsYpuu4iGMe7vdb77eyQGbv6CF2/AK168Kwb1+04mRFjDzL4Zcal95eSj42ccGGf/89xKuaORx5RjNdDTlGQMXQjlEltQwG3WZlp0LvmotCiwE086SXBHN9X928/aChwC6KBS/sGRmPRgMIEz56By+e/CYRdAW83d7WwE= Message-ID: <1a297b360708080459g1343eb55x8aa923a56c170277@mail.gmail.com> Date: Wed, 8 Aug 2007 15:59:25 +0400 From: "Manu Abraham" To: "Andi Kleen" Subject: Re: [PATCH] msleep() with hrtimers Cc: "Andrew Morton" , "Jonathan Corbet" , linux-kernel@vger.kernel.org, "Thomas Gleixner" , "Ingo Molnar" , "Roman Zippel" In-Reply-To: <20070808115219.GA13878@one.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <15327.1186166232@lwn.net> <20070807124009.9f6c2247.akpm@linux-foundation.org> <1a297b360708080409tfc9dee5mb92c216919bffc1e@mail.gmail.com> <20070808115219.GA13878@one.firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1194 Lines: 28 On 8/8/07, Andi Kleen wrote: > On Wed, Aug 08, 2007 at 03:09:14PM +0400, Manu Abraham wrote: > > On 08 Aug 2007 13:55:28 +0200, Andi Kleen wrote: > > > Andrew Morton writes: > > > > > > > > I'd be surprised if there was significant overhead - the maximum frequency > > > > at which msleep() can be called is 1000Hz. We'd need an awful lot of > > > > overhead for that to cause problems, surely? > > > > > > The bigger risk is probably to break drivers that rely on msleep(1) > > > really being msleep( very long depending on HZ ) > > > > > > But the only way to find out is to try it. > > > > Well, i am quite sure a lot of drivers will be broken. But well .. if > > If you know of specific examples you should list them so that > they can be fixed proactively. A bit hard to state, which all since quite some are RE'd. Well you can hear the cries when it is broken. :) Manu - 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/