From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753264AbbCBDSM (ORCPT ); Sun, 1 Mar 2015 22:18:12 -0500 Received: from lgeamrelo02.lge.com ([156.147.1.126]:40603 "EHLO lgeamrelo02.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752064AbbCBDSJ (ORCPT ); Sun, 1 Mar 2015 22:18:09 -0500 X-Original-SENDERIP: 10.177.220.203 X-Original-MAILFROM: namhyung@kernel.org From: Namhyung Kim To: Arnaldo Carvalho de Melo Cc: Ingo Molnar , Peter Zijlstra , Jiri Olsa , LKML , Stephane Eranian Subject: [PATCH] perf record: Document --group option Date: Mon, 2 Mar 2015 12:13:33 +0900 Message-Id: <1425266013-5034-1-git-send-email-namhyung@kernel.org> X-Mailer: git-send-email 2.2.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The 'perf record --group' option lacks documentation and confuses users. As -e/--event option already supports group spec, it should not be used anymore. Also add a short description of event group itself. Reported-by: Stephane Eranian Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-record.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index cae75c11120f..f989beafd52a 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -55,6 +55,11 @@ OPTIONS If you want to profile write accesses in [0x1000~1008), just set 'mem:0x1000/8:w'. + - a group of events surrounded by a pair of brace ("{event1,event2,...}"). + Each event is separated by commas and the group should be quoted to + prevent the shell interpretation. You also need to use --group on + "perf report" to view group events together. + --filter=:: Event filter. @@ -107,6 +112,10 @@ OPTIONS specification with appended unit character - B/K/M/G. The size is rounded up to have nearest pages power of two value. +--group:: + Put all events in a single event group. This precedes the --event + option and remains only for backward compatibility. See --event. + -g:: Enables call-graph (stack chain/backtrace) recording. -- 2.2.2