From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754067AbbF3E4b (ORCPT ); Tue, 30 Jun 2015 00:56:31 -0400 Received: from terminus.zytor.com ([198.137.202.10]:38573 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754162AbbF3E4Z (ORCPT ); Tue, 30 Jun 2015 00:56:25 -0400 Date: Mon, 29 Jun 2015 21:56:09 -0700 From: tip-bot for Jiri Olsa Message-ID: Cc: jolsa@kernel.org, a.p.zijlstra@chello.nl, hpa@zytor.com, linux-kernel@vger.kernel.org, acme@redhat.com, mingo@kernel.org, namhyung@kernel.org, dsahern@gmail.com, adrian.hunter@intel.com, ak@linux.intel.com, tglx@linutronix.de, eranian@google.com Reply-To: jolsa@kernel.org, a.p.zijlstra@chello.nl, hpa@zytor.com, acme@redhat.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, eranian@google.com, mingo@kernel.org, namhyung@kernel.org, dsahern@gmail.com, adrian.hunter@intel.com, ak@linux.intel.com In-Reply-To: <1435310967-14570-14-git-send-email-jolsa@kernel.org> References: <1435310967-14570-14-git-send-email-jolsa@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf stat: Introduce perf_evsel__read function Git-Commit-ID: f99f4719b841a9745d6a7652eef3956aaf2db66a 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: f99f4719b841a9745d6a7652eef3956aaf2db66a Gitweb: http://git.kernel.org/tip/f99f4719b841a9745d6a7652eef3956aaf2db66a Author: Jiri Olsa AuthorDate: Fri, 26 Jun 2015 11:29:18 +0200 Committer: Arnaldo Carvalho de Melo CommitDate: Fri, 26 Jun 2015 11:46:57 -0300 perf stat: Introduce perf_evsel__read function Adding simple read function that reads/store data into given struct perf_counts_values *count object. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1435310967-14570-14-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evsel.c | 14 ++++++++++++++ tools/perf/util/evsel.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index cd6ce70..2e0a4e0 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -955,6 +955,20 @@ int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread, return cb(evsel, cpu, thread, &count); } +int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, + struct perf_counts_values *count) +{ + memset(count, 0, sizeof(*count)); + + if (FD(evsel, cpu, thread) < 0) + return -EINVAL; + + if (readn(FD(evsel, cpu, thread), count, sizeof(*count)) < 0) + return -errno; + + return 0; +} + int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, int cpu, int thread, bool scale) { diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 020f7e1..a79944a 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -236,6 +236,9 @@ typedef int (perf_evsel__read_cb_t)(struct perf_evsel *evsel, int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread, perf_evsel__read_cb_t cb); +int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, + struct perf_counts_values *count); + int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, int cpu, int thread, bool scale);