From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756154Ab0EaSDf (ORCPT ); Mon, 31 May 2010 14:03:35 -0400 Received: from mail.gmx.net ([213.165.64.20]:34616 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751317Ab0EaSDe (ORCPT ); Mon, 31 May 2010 14:03:34 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1+L9FNw+ZeLXGpkZHdf+LrhMMoqkwP/wUV5yta/RE 9G3gelbupK9d7I Subject: Re: commit e9e9250b: sync wakeup bustage when waker is an RT task From: Mike Galbraith To: Peter Zijlstra Cc: Ingo Molnar , LKML , Thomas Gleixner In-Reply-To: <1275316109.27810.22969.camel@twins> References: <1273924628.10630.24.camel@marge.simson.net> <1273925052.1674.138.camel@laptop> <1273943222.8752.7.camel@marge.simson.net> <1273994510.7873.10.camel@marge.simson.net> <1275306978.27810.22357.camel@twins> <1275314209.17599.7.camel@marge.simson.net> <1275316109.27810.22969.camel@twins> Content-Type: text/plain Date: Mon, 31 May 2010 20:03:28 +0200 Message-Id: <1275329008.8096.104.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2010-05-31 at 16:28 +0200, Peter Zijlstra wrote: > On Mon, 2010-05-31 at 15:56 +0200, Mike Galbraith wrote: > > > > Does the below work? > > > > Had to make a dinky adjustment for x86-tip-rt33, but yeah, the horrid > > latencies are gone. (hm, skinnier than expected too) > > > Here's one that should be even skinnier ;-) Cool, box is into skeletal. > I knew I already had an accessor: power_of(), also, I duplicated the > cpu_power variable inside struct rq so we don't have to chase three > pointers to get it. Looks good, but I'll retest anyway. -Mike