From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753770AbbBYVrW (ORCPT ); Wed, 25 Feb 2015 16:47:22 -0500 Received: from mail.kernel.org ([198.145.29.136]:45683 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753407AbbBYVrU (ORCPT ); Wed, 25 Feb 2015 16:47:20 -0500 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , Borislav Petkov , David Ahern , Don Zickus , Frederic Weisbecker , Jiri Olsa , Mike Galbraith , Namhyung Kim , Peter Zijlstra , Stephane Eranian Subject: [PATCH 02/21] perf evlist: Introduce set_filter_pid method Date: Wed, 25 Feb 2015 18:46:40 -0300 Message-Id: <1424900819-910-3-git-send-email-acme@kernel.org> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1424900819-910-1-git-send-email-acme@kernel.org> References: <1424900819-910-1-git-send-email-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnaldo Carvalho de Melo To filter out events for a certain pid, for instance, when tracing system wide, so that the tracer itself doesn't creates an event loop. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-byoia9dzu4gmkdv87etnd9zf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 13 +++++++++++++ tools/perf/util/evlist.h | 1 + 2 files changed, 14 insertions(+) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index a8b2c5726aba..39302a455a58 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1085,6 +1085,19 @@ int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter) return err; } +int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid) +{ + char *filter; + int ret; + + if (asprintf(&filter, "common_pid != %d", pid) < 0) + return -1; + + ret = perf_evlist__set_filter(evlist, filter); + free(filter); + return ret; +} + bool perf_evlist__valid_sample_type(struct perf_evlist *evlist) { struct perf_evsel *pos; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index c94a9e03ecf1..715fa3a296f4 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -77,6 +77,7 @@ int perf_evlist__add_newtp(struct perf_evlist *evlist, const char *sys, const char *name, void *handler); int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter); +int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid); struct perf_evsel * perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id); -- 1.9.3