From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756760Ab1JSQxs (ORCPT ); Wed, 19 Oct 2011 12:53:48 -0400 Received: from va3ehsobe001.messaging.microsoft.com ([216.32.180.11]:53042 "EHLO VA3EHSOBE001.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751349Ab1JSQxr (ORCPT ); Wed, 19 Oct 2011 12:53:47 -0400 X-SpamScore: -15 X-BigFish: VPS-15(zz936eK1432N98dK4015Lzz1202hzzz32i668h839h944h) X-Forefront-Antispam-Report: CIP:163.181.249.108;KIP:(null);UIP:(null);IPVD:NLI;H:ausb3twp01.amd.com;RD:none;EFVD:NLI X-WSS-ID: 0LTBO96-01-AUC-02 X-M-MSG: Date: Wed, 19 Oct 2011 18:52:52 +0200 From: Robert Richter To: Peter Zijlstra CC: Ingo Molnar , LKML , oprofile-list Subject: Re: [PATCH 5/5] oprofile, x86: Reimplement nmi timer mode using perf Message-ID: <20111019165252.GH24346@erda.amd.com> References: <1318861624-715-1-git-send-email-robert.richter@amd.com> <1318861624-715-6-git-send-email-robert.richter@amd.com> <1318935581.21167.13.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <1318935581.21167.13.camel@twins> User-Agent: Mutt/1.5.21 (2010-09-15) X-OriginatorOrg: amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 18.10.11 06:59:41, Peter Zijlstra wrote: > On Mon, 2011-10-17 at 16:27 +0200, Robert Richter wrote: > > The legacy x86 nmi watchdog code was removed with the implementation > > of the perf based nmi watchdog. This broke Oprofile's nmi timer > > mode. To run nmi timer mode we relied on a continuous ticking nmi > > source which the nmi watchdog provided. The nmi tick was no longer > > available and current watchdog can not be used anymore since it runs > > with very long periods in the range of seconds. This patch > > reimplements the nmi timer mode using a perf counter nmi source. > > fair enough, > > Acked-by: Peter Zijlstra > > I take it you'll take this through your oprofile tree? Yes, will send it through my tree. Thanks, -Robert -- Advanced Micro Devices, Inc. Operating System Research Center