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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF7D4C2BB41 for ; Tue, 16 Aug 2022 22:18:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237889AbiHPWSB (ORCPT ); Tue, 16 Aug 2022 18:18:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238003AbiHPWRy (ORCPT ); Tue, 16 Aug 2022 18:17:54 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5310901B9; Tue, 16 Aug 2022 15:17:53 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id g18so1947298pju.0; Tue, 16 Aug 2022 15:17:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:from:to:cc; bh=aFH5O6viJ6NTA25wi2Aiw0FQRIeUfCBP+ZrmMXU/R8U=; b=IZh+6RGZ+6/V/QYTPdN/5U4FDgEYkPcMJDOUV2EmmEXgKPXLlVK2/5ujAB0BprUSAh kS3hmzJBEDhqPF1pDHPOROXRnWzB1etxHmCR0BX59Ams/S0reNxuw0s6gsRhYfwcoOEO Kvl+5oFOwSqtuzbd0vHKvJOYnd42utdtqiXarnNmh2Pyr6/Ka9aB0oNVlLn3mIf6L7L1 UrMPxzrNb9ctol1tllzwNJBWyPPZIv545b/u95j0Mn11MZXj8iyScaQgAwyisSAbuNRu UoOzpmyQGT/Dga7jdhs+0kIlUpLwXHM4ixsFZQ7IK75E3crIq+EXdNfsK5lw930/pZ6P kwgg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:x-gm-message-state:from :to:cc; bh=aFH5O6viJ6NTA25wi2Aiw0FQRIeUfCBP+ZrmMXU/R8U=; b=IGXy5owsAqtOrPBrZVS+uRkJ3gsD2z8D29kbpfwN1RfK/w5Q3dtzl+vssDAg3JNDXe UhcM6VRZ161myKFcGjdaHsu1S5PolQGTLNjRYOI6IChlzcWd+TbgMG4OBaGSG1NnR38L l7sa7ehYHMPYEOP3kPC1e8GbuYoDvLtKQ7pMWbqcI/h1Th3ThT0Sj1wRy0mHALl+Eomd DwVPF0U1/qtWhDlqBCd5KdH+eE7B7n6Dn4AFrXieKCl6lL73ZCiRjbTAW2BdfuIC9uiq R7SKFaCAZCIDGrq2q3MPpTGd0BfRyCfcHjaU8PfJNbL4/9hp3BapXXPpMk4q/FUKr4kY 1pJA== X-Gm-Message-State: ACgBeo2DGVTRNKZkYNzUFqqUq/0cLqkKPvuP4wXS4Cifvt1QVq5Ft616 jO900FyvIoKnr+OT/diTEyw= X-Google-Smtp-Source: AA6agR6xS9AmAxMz40IF10AMCHPiCXnkDEH1nJq+aTMlKqYSNTEjnotjcqx2/4z0zTC+1K/QwdMyMA== X-Received: by 2002:a17:902:d48d:b0:16f:5ce:1d08 with SMTP id c13-20020a170902d48d00b0016f05ce1d08mr23525965plg.49.1660688273183; Tue, 16 Aug 2022 15:17:53 -0700 (PDT) Received: from balhae.hsd1.ca.comcast.net ([2601:647:6780:1040:d539:e967:9fd8:5c81]) by smtp.gmail.com with ESMTPSA id 3-20020a620603000000b0052b7f0ff197sm8965943pfg.49.2022.08.16.15.17.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Aug 2022 15:17:52 -0700 (PDT) Sender: Namhyung Kim From: Namhyung Kim To: Arnaldo Carvalho de Melo , Jiri Olsa Cc: Ingo Molnar , Peter Zijlstra , LKML , Ian Rogers , linux-perf-users@vger.kernel.org Subject: [PATCH 3/4] tools lib perf: Add a test case for read formats Date: Tue, 16 Aug 2022 15:17:46 -0700 Message-Id: <20220816221747.275828-4-namhyung@kernel.org> X-Mailer: git-send-email 2.37.1.595.g718a3a8f04-goog In-Reply-To: <20220816221747.275828-1-namhyung@kernel.org> References: <20220816221747.275828-1-namhyung@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org It checks a various combination of the read format settings and verify it return the value in a proper position. The test uses task-clock software events to guarantee it's always active and sets enabled/running time. Signed-off-by: Namhyung Kim --- tools/lib/perf/tests/test-evsel.c | 161 ++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) diff --git a/tools/lib/perf/tests/test-evsel.c b/tools/lib/perf/tests/test-evsel.c index 89be89afb24d..a11fc51bfb68 100644 --- a/tools/lib/perf/tests/test-evsel.c +++ b/tools/lib/perf/tests/test-evsel.c @@ -1,10 +1,13 @@ // SPDX-License-Identifier: GPL-2.0 #include #include +#include #include +#include #include #include #include +#include #include #include "tests.h" @@ -189,6 +192,163 @@ static int test_stat_user_read(int event) return 0; } +static int test_stat_read_format_single(struct perf_event_attr *attr, struct perf_thread_map *threads) +{ + struct perf_evsel *evsel; + struct perf_counts_values counts; + volatile int count = 0x100000; + int err; + + evsel = perf_evsel__new(attr); + __T("failed to create evsel", evsel); + + /* skip old kernels that don't support the format */ + err = perf_evsel__open(evsel, NULL, threads); + if (err < 0) + return 0; + + while (count--) ; + + memset(&counts, -1, sizeof(counts)); + perf_evsel__read(evsel, 0, 0, &counts); + + __T("failed to read value", counts.val); + if (attr->read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) + __T("failed to read TOTAL_TIME_ENABLED", counts.ena); + if (attr->read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) + __T("failed to read TOTAL_TIME_RUNNING", counts.run); + if (attr->read_format & PERF_FORMAT_ID) + __T("failed to read ID", counts.id); + if (attr->read_format & PERF_FORMAT_LOST) + __T("failed to read LOST", counts.lost == 0); + + perf_evsel__close(evsel); + perf_evsel__delete(evsel); + return 0; +} + +static int test_stat_read_format_group(struct perf_event_attr *attr, struct perf_thread_map *threads) +{ + struct perf_evsel *leader, *member; + struct perf_counts_values counts; + volatile int count = 0x100000; + int err; + + attr->read_format |= PERF_FORMAT_GROUP; + leader = perf_evsel__new(attr); + __T("failed to create leader", leader); + + attr->read_format &= ~PERF_FORMAT_GROUP; + member = perf_evsel__new(attr); + __T("failed to create member", member); + + member->leader = leader; + leader->nr_members = 2; + + /* skip old kernels that don't support the format */ + err = perf_evsel__open(leader, NULL, threads); + if (err < 0) + return 0; + err = perf_evsel__open(member, NULL, threads); + if (err < 0) + return 0; + + while (count--) ; + + memset(&counts, -1, sizeof(counts)); + perf_evsel__read(leader, 0, 0, &counts); + + __T("failed to read leader value", counts.val); + if (attr->read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) + __T("failed to read leader TOTAL_TIME_ENABLED", counts.ena); + if (attr->read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) + __T("failed to read leader TOTAL_TIME_RUNNING", counts.run); + if (attr->read_format & PERF_FORMAT_ID) + __T("failed to read leader ID", counts.id); + if (attr->read_format & PERF_FORMAT_LOST) + __T("failed to read leader LOST", counts.lost == 0); + + memset(&counts, -1, sizeof(counts)); + perf_evsel__read(member, 0, 0, &counts); + + __T("failed to read member value", counts.val); + if (attr->read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) + __T("failed to read member TOTAL_TIME_ENABLED", counts.ena); + if (attr->read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) + __T("failed to read member TOTAL_TIME_RUNNING", counts.run); + if (attr->read_format & PERF_FORMAT_ID) + __T("failed to read member ID", counts.id); + if (attr->read_format & PERF_FORMAT_LOST) + __T("failed to read member LOST", counts.lost == 0); + + perf_evsel__close(member); + perf_evsel__close(leader); + perf_evsel__delete(member); + perf_evsel__delete(leader); + return 0; +} + +static int test_stat_read_format(void) +{ + struct perf_thread_map *threads; + struct perf_event_attr attr = { + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_TASK_CLOCK, + }; + int err, i; + +#define FMT(_fmt) PERF_FORMAT_ ## _fmt +#define FMT_TIME (FMT(TOTAL_TIME_ENABLED) | FMT(TOTAL_TIME_RUNNING)) + + uint64_t test_formats [] = { + 0, + FMT_TIME, + FMT(ID), + FMT(LOST), + FMT_TIME | FMT(ID), + FMT_TIME | FMT(LOST), + FMT_TIME | FMT(ID) | FMT(LOST), + FMT(ID) | FMT(LOST), + }; + +#undef FMT +#undef FMT_TIME + + threads = perf_thread_map__new_dummy(); + __T("failed to create threads", threads); + + perf_thread_map__set_pid(threads, 0, 0); + + for (i = 0; i < (int)ARRAY_SIZE(test_formats); i++) { + attr.read_format = test_formats[i]; + __T_VERBOSE("testing single read with read_format: %lx\n", + (unsigned long)test_formats[i]); + + err = test_stat_read_format_single(&attr, threads); + __T("failed to read single format", err == 0); + } + + perf_thread_map__put(threads); + + threads = perf_thread_map__new_array(2, NULL); + __T("failed to create threads", threads); + + perf_thread_map__set_pid(threads, 0, 0); + perf_thread_map__set_pid(threads, 1, 0); + + for (i = 0; i < (int)ARRAY_SIZE(test_formats); i++) { + attr.read_format = test_formats[i]; + __T_VERBOSE("testing group read with read_format: %lx\n", + (unsigned long)test_formats[i]); + + err = test_stat_read_format_group(&attr, threads); + __T("failed to read group format", err == 0); + } + + perf_thread_map__put(threads); + return 0; +} + int test_evsel(int argc, char **argv) { __T_START; @@ -200,6 +360,7 @@ int test_evsel(int argc, char **argv) test_stat_thread_enable(); test_stat_user_read(PERF_COUNT_HW_INSTRUCTIONS); test_stat_user_read(PERF_COUNT_HW_CPU_CYCLES); + test_stat_read_format(); __T_END; return tests_failed == 0 ? 0 : -1; -- 2.37.1.595.g718a3a8f04-goog