From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933560AbcHDJav (ORCPT ); Thu, 4 Aug 2016 05:30:51 -0400 Received: from terminus.zytor.com ([198.137.202.10]:52042 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933280AbcHDJaL (ORCPT ); Thu, 4 Aug 2016 05:30:11 -0400 Date: Thu, 4 Aug 2016 02:07:46 -0700 From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: namhyung@kernel.org, mingo@kernel.org, hpa@zytor.com, acme@redhat.com, adrian.hunter@intel.com, jolsa@kernel.org, linux-kernel@vger.kernel.org, dsahern@gmail.com, tglx@linutronix.de, wangnan0@huawei.com Reply-To: acme@redhat.com, adrian.hunter@intel.com, jolsa@kernel.org, mingo@kernel.org, namhyung@kernel.org, hpa@zytor.com, wangnan0@huawei.com, tglx@linutronix.de, linux-kernel@vger.kernel.org, dsahern@gmail.com To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf evsel: Introduce constructor for cycles event Git-Commit-ID: 7c48dcfd32b45b69aa8d5e81108fff8c7a2272ed X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 7c48dcfd32b45b69aa8d5e81108fff8c7a2272ed Gitweb: http://git.kernel.org/tip/7c48dcfd32b45b69aa8d5e81108fff8c7a2272ed Author: Arnaldo Carvalho de Melo AuthorDate: Thu, 28 Jul 2016 18:33:20 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 28 Jul 2016 18:33:20 -0300 perf evsel: Introduce constructor for cycles event That is the default used when no events is specified in tools, separate it so that simpler tools that need no evlist can use it directly. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-67mwuthscwroz88x9pswcqyv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 22 ++-------------------- tools/perf/util/evsel.c | 28 ++++++++++++++++++++++++++++ tools/perf/util/evsel.h | 2 ++ 3 files changed, 32 insertions(+), 20 deletions(-) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 2a40b8e..097b3ed 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -239,31 +239,13 @@ void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr) int perf_evlist__add_default(struct perf_evlist *evlist) { - struct perf_event_attr attr = { - .type = PERF_TYPE_HARDWARE, - .config = PERF_COUNT_HW_CPU_CYCLES, - }; - struct perf_evsel *evsel; - - event_attr_init(&attr); + struct perf_evsel *evsel = perf_evsel__new_cycles(); - perf_event_attr__set_max_precise_ip(&attr); - - evsel = perf_evsel__new(&attr); if (evsel == NULL) - goto error; - - /* use asprintf() because free(evsel) assumes name is allocated */ - if (asprintf(&evsel->name, "cycles%.*s", - attr.precise_ip ? attr.precise_ip + 1 : 0, ":ppp") < 0) - goto error_free; + return -ENOMEM; perf_evlist__add(evlist, evsel); return 0; -error_free: - perf_evsel__delete(evsel); -error: - return -ENOMEM; } int perf_evlist__add_dummy(struct perf_evlist *evlist) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 8c54df6..4c2b31d 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -253,6 +253,34 @@ struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx) return evsel; } +struct perf_evsel *perf_evsel__new_cycles(void) +{ + struct perf_event_attr attr = { + .type = PERF_TYPE_HARDWARE, + .config = PERF_COUNT_HW_CPU_CYCLES, + }; + struct perf_evsel *evsel; + + event_attr_init(&attr); + + perf_event_attr__set_max_precise_ip(&attr); + + evsel = perf_evsel__new(&attr); + if (evsel == NULL) + goto out; + + /* use asprintf() because free(evsel) assumes name is allocated */ + if (asprintf(&evsel->name, "cycles%.*s", + attr.precise_ip ? attr.precise_ip + 1 : 0, ":ppp") < 0) + goto error_free; +out: + return evsel; +error_free: + perf_evsel__delete(evsel); + evsel = NULL; + goto out; +} + /* * Returns pointer with encoded error via interface. */ diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 8a4a6c9..4d44129 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -175,6 +175,8 @@ static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char * return perf_evsel__newtp_idx(sys, name, 0); } +struct perf_evsel *perf_evsel__new_cycles(void); + struct event_format *event_format__new(const char *sys, const char *name); void perf_evsel__init(struct perf_evsel *evsel,