From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CCD00C10F27 for ; Tue, 10 Mar 2020 11:16:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A2AF124691 for ; Tue, 10 Mar 2020 11:16:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583838984; bh=nTOUwNuPvB9t/C+sYs3EvVxrB9+MpX5GBSTL8dH8SUg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Hj7FRl0bZ9pZriT9IKZcIXDI0LnFPYxxSzYks9e8GBvpkL5n9UPMZtx+hApKYYOR9 TXXNYHPBGWAy3384btivyRJQgBX2CHOJd/Dy68AkQRezg6HRGFmlSpfpOC9omEk0wY a4oX1M2gXt9Mntzamnh7ozSdTCD2a+RIDReEwHRU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726646AbgCJLQU (ORCPT ); Tue, 10 Mar 2020 07:16:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:54046 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725937AbgCJLQR (ORCPT ); Tue, 10 Mar 2020 07:16:17 -0400 Received: from quaco.ghostprotocols.net (unknown [179.97.37.151]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 471AE2468F; Tue, 10 Mar 2020 11:16:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583838977; bh=nTOUwNuPvB9t/C+sYs3EvVxrB9+MpX5GBSTL8dH8SUg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HIhzy0kIU0lQ7euDdgsdhqQyR4wWhezVOy/o/blyFns3HPMvyfuESrzA9qmlzMFon tN/2kbECwvmTDPbifOa/K5lTNzj6seV183qibA/Eu7fVCLMtjUAPxTXoFK2m5lpO4G 2cKeV2oLULOfR2eJBic2/Ja2JqQWXZm1JzEfhnEU= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Michael Petlan , Jiri Olsa , Alexander Shishkin , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: [PATCH 05/19] libperf: Add counting example Date: Tue, 10 Mar 2020 08:15:37 -0300 Message-Id: <20200310111551.25160-6-acme@kernel.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200310111551.25160-1-acme@kernel.org> References: <20200310111551.25160-1-acme@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Michael Petlan Current libperf man pages mention file counting.c "coming with libperf package", however, the file is missing. Add the file then. Fixes: 81de3bf37a8b ("libperf: Add man pages") Signed-off-by: Michael Petlan Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Namhyung Kim Cc: Peter Zijlstra LPU-Reference: 20200227194424.28210-1-mpetlan@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- .../perf/Documentation/examples/counting.c | 83 +++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 tools/lib/perf/Documentation/examples/counting.c diff --git a/tools/lib/perf/Documentation/examples/counting.c b/tools/lib/perf/Documentation/examples/counting.c new file mode 100644 index 000000000000..6085693571ef --- /dev/null +++ b/tools/lib/perf/Documentation/examples/counting.c @@ -0,0 +1,83 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static int libperf_print(enum libperf_print_level level, + const char *fmt, va_list ap) +{ + return vfprintf(stderr, fmt, ap); +} + +int main(int argc, char **argv) +{ + int count = 100000, err = 0; + struct perf_evlist *evlist; + struct perf_evsel *evsel; + struct perf_thread_map *threads; + struct perf_counts_values counts; + + struct perf_event_attr attr1 = { + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_CPU_CLOCK, + .read_format = PERF_FORMAT_TOTAL_TIME_ENABLED|PERF_FORMAT_TOTAL_TIME_RUNNING, + .disabled = 1, + }; + struct perf_event_attr attr2 = { + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_TASK_CLOCK, + .read_format = PERF_FORMAT_TOTAL_TIME_ENABLED|PERF_FORMAT_TOTAL_TIME_RUNNING, + .disabled = 1, + }; + + libperf_init(libperf_print); + threads = perf_thread_map__new_dummy(); + if (!threads) { + fprintf(stderr, "failed to create threads\n"); + return -1; + } + perf_thread_map__set_pid(threads, 0, 0); + evlist = perf_evlist__new(); + if (!evlist) { + fprintf(stderr, "failed to create evlist\n"); + goto out_threads; + } + evsel = perf_evsel__new(&attr1); + if (!evsel) { + fprintf(stderr, "failed to create evsel1\n"); + goto out_evlist; + } + perf_evlist__add(evlist, evsel); + evsel = perf_evsel__new(&attr2); + if (!evsel) { + fprintf(stderr, "failed to create evsel2\n"); + goto out_evlist; + } + perf_evlist__add(evlist, evsel); + perf_evlist__set_maps(evlist, NULL, threads); + err = perf_evlist__open(evlist); + if (err) { + fprintf(stderr, "failed to open evsel\n"); + goto out_evlist; + } + perf_evlist__enable(evlist); + while (count--); + perf_evlist__disable(evlist); + perf_evlist__for_each_evsel(evlist, evsel) { + perf_evsel__read(evsel, 0, 0, &counts); + fprintf(stdout, "count %llu, enabled %llu, run %llu\n", + counts.val, counts.ena, counts.run); + } + perf_evlist__close(evlist); +out_evlist: + perf_evlist__delete(evlist); +out_threads: + perf_thread_map__put(threads); + return err; +} -- 2.21.1