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=-12.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 59D40C4CEC5 for ; Fri, 13 Sep 2019 13:26:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 26D2F20640 for ; Fri, 13 Sep 2019 13:26:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568381215; bh=kO5cLL7fZq3pQ8qCHzRLCLzATqGSVGA08QdoUphbeks=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=zgYHu+isM507KMwbWZqlqFo/mjw3P05C3qBmpgYArpEC6HYNpbbLl1HlKM0F/maIf PFbo7lkwa9kFzcHCBC+YJ5JpUmRpQE7GP5Pj3o7uBZDeclw4k8LaZILb5Mwos5i3l4 0b5oGYps6SoxYliNU3bLgOAMZ8d8RG3S8wC+utAg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2403868AbfIMN0t (ORCPT ); Fri, 13 Sep 2019 09:26:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47258 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390764AbfIMN0p (ORCPT ); Fri, 13 Sep 2019 09:26:45 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2A1B510C0922; Fri, 13 Sep 2019 13:26:45 +0000 (UTC) Received: from krava.brq.redhat.com (unknown [10.43.17.36]) by smtp.corp.redhat.com (Postfix) with ESMTP id 853995C1D4; Fri, 13 Sep 2019 13:26:43 +0000 (UTC) From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: lkml , Ingo Molnar , Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Michael Petlan Subject: [PATCH 70/73] libperf: Add tests_mmap_cpus test Date: Fri, 13 Sep 2019 15:23:52 +0200 Message-Id: <20190913132355.21634-71-jolsa@kernel.org> In-Reply-To: <20190913132355.21634-1-jolsa@kernel.org> References: <20190913132355.21634-1-jolsa@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.66]); Fri, 13 Sep 2019 13:26:45 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adding mmaping tests that generates prctl call on every cpu validates it gets all the related events in ring buffer. Link: http://lkml.kernel.org/n/tip-9qdckblmgjm42ofd7haflso0@git.kernel.org Signed-off-by: Jiri Olsa --- tools/perf/lib/tests/test-evlist.c | 97 ++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) diff --git a/tools/perf/lib/tests/test-evlist.c b/tools/perf/lib/tests/test-evlist.c index aa90e8d40738..2b7271130223 100644 --- a/tools/perf/lib/tests/test-evlist.c +++ b/tools/perf/lib/tests/test-evlist.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include +#include #include #include #include @@ -299,6 +300,101 @@ static int test_mmap_thread(void) return 0; } +static int test_mmap_cpus(void) +{ + struct perf_evlist *evlist; + struct perf_evsel *evsel; + struct perf_mmap *map; + struct perf_cpu_map *cpus; + struct perf_event_attr attr = { + .type = PERF_TYPE_TRACEPOINT, + .sample_period = 1, + .wakeup_watermark = 1, + .disabled = 1, + }; + cpu_set_t saved_mask; + char path[PATH_MAX]; + int id, err, cpu, tmp; + union perf_event *event; + int count = 0; + + snprintf(path, PATH_MAX, "%s/kernel/debug/tracing/events/syscalls/sys_enter_prctl/id", + sysfs__mountpoint()); + + if (filename__read_int(path, &id)) { + fprintf(stderr, "error: failed to get tracepoint id: %s\n", path); + return -1; + } + + attr.config = id; + + cpus = perf_cpu_map__new(NULL); + __T("failed to create cpus", cpus); + + evlist = perf_evlist__new(); + __T("failed to create evlist", evlist); + + evsel = perf_evsel__new(&attr); + __T("failed to create evsel1", evsel); + + perf_evlist__add(evlist, evsel); + + perf_evlist__set_maps(evlist, cpus, NULL); + + err = perf_evlist__open(evlist); + __T("failed to open evlist", err == 0); + + err = perf_evlist__mmap(evlist, 4); + __T("failed to mmap evlist", err == 0); + + perf_evlist__enable(evlist); + + err = sched_getaffinity(0, sizeof(saved_mask), &saved_mask); + __T("sched_getaffinity failed", err == 0); + + perf_cpu_map__for_each_cpu(cpu, tmp, cpus) { + cpu_set_t mask; + + CPU_ZERO(&mask); + CPU_SET(cpu, &mask); + + err = sched_setaffinity(0, sizeof(mask), &mask); + __T("sched_setaffinity failed", err == 0); + + prctl(0, 0, 0, 0, 0); + } + + err = sched_setaffinity(0, sizeof(saved_mask), &saved_mask); + __T("sched_setaffinity failed", err == 0); + + perf_evlist__disable(evlist); + + perf_evlist__for_each_mmap(evlist, map) { + if (perf_mmap__read_init(map) < 0) + continue; + + while ((event = perf_mmap__read_event(map)) != NULL) { + count++; + perf_mmap__consume(map); + } + + perf_mmap__read_done(map); + } + + /* calls perf_evlist__munmap/perf_evlist__close */ + perf_evlist__delete(evlist); + + /* + * The generated prctl events should match the + * number of cpus or be bigger (we are system-wide). + */ + __T("failed count", count >= perf_cpu_map__nr(cpus)); + + perf_cpu_map__put(cpus); + + return 0; +} + int main(int argc, char **argv) { __T_START; @@ -309,6 +405,7 @@ int main(int argc, char **argv) test_stat_thread(); test_stat_thread_enable(); test_mmap_thread(); + test_mmap_cpus(); __T_OK; return 0; -- 2.21.0