Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756280Ab0AGIza (ORCPT ); Thu, 7 Jan 2010 03:55:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756026Ab0AGIza (ORCPT ); Thu, 7 Jan 2010 03:55:30 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:36644 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756009Ab0AGIz3 (ORCPT ); Thu, 7 Jan 2010 03:55:29 -0500 Subject: Re: [PATCH] perf_events: improve Intel event scheduling From: Peter Zijlstra To: Paul Mackerras Cc: Stephane Eranian , eranian@gmail.com, linux-kernel@vger.kernel.org, mingo@elte.hu, perfmon2-devel@lists.sf.net, "David S. Miller" In-Reply-To: <20100107041340.GA30718@drongo> References: <1255964630-5878-1-git-send-email-eranian@gmail.com> <1258561957.3918.661.camel@laptop> <7c86c4470912110300n44650d98ke52ec56cf4d925c1@mail.gmail.com> <7c86c4470912110359i5a4416c2t9075eaa47d25865a@mail.gmail.com> <1261410040.4314.178.camel@laptop> <20091222010238.GB31264@drongo> <20100107041340.GA30718@drongo> Content-Type: text/plain; charset="UTF-8" Date: Thu, 07 Jan 2010 09:54:45 +0100 Message-ID: <1262854485.4049.87.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 532 Lines: 15 On Thu, 2010-01-07 at 15:13 +1100, Paul Mackerras wrote: > > On powerpc, the pmu->enable() function always stops the PMU if it > wasn't already stopped. I just looked at the generic code and it looks like kernel/perf_event.c always calls perf_disable() before calling ->enable(). -- 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/