From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756852Ab0A2Jbg (ORCPT ); Fri, 29 Jan 2010 04:31:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756807Ab0A2JaH (ORCPT ); Fri, 29 Jan 2010 04:30:07 -0500 Received: from hera.kernel.org ([140.211.167.34]:57492 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756459Ab0A2JaA (ORCPT ); Fri, 29 Jan 2010 04:30:00 -0500 Date: Fri, 29 Jan 2010 09:29:06 GMT From: tip-bot for Peter Zijlstra Cc: linux-kernel@vger.kernel.org, eranian@google.com, hpa@zytor.com, mingo@redhat.com, a.p.zijlstra@chello.nl, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, eranian@google.com, linux-kernel@vger.kernel.org, a.p.zijlstra@chello.nl, tglx@linutronix.de, mingo@elte.hu In-Reply-To: References: To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf_event: x86: Optimize x86_pmu_disable() Message-ID: Git-Commit-ID: 6c9687abeb24d5b7aae7db5be070c2139ad29e29 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Fri, 29 Jan 2010 09:29:06 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 6c9687abeb24d5b7aae7db5be070c2139ad29e29 Gitweb: http://git.kernel.org/tip/6c9687abeb24d5b7aae7db5be070c2139ad29e29 Author: Peter Zijlstra AuthorDate: Mon, 25 Jan 2010 11:57:25 +0100 Committer: Ingo Molnar CommitDate: Fri, 29 Jan 2010 09:01:43 +0100 perf_event: x86: Optimize x86_pmu_disable() x86_pmu_disable() removes the event from the cpuc->event_list[], however since an event can only be on that list once, stop looking after we found it. Signed-off-by: Peter Zijlstra Cc: Stephane Eranian LKML-Reference: Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 33c889f..66de282 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1884,6 +1884,7 @@ static void x86_pmu_disable(struct perf_event *event) cpuc->event_list[i-1] = cpuc->event_list[i]; --cpuc->n_events; + break; } } perf_event_update_userpage(event);