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 380DEC77B73 for ; Mon, 22 May 2023 06:44:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231997AbjEVGoQ (ORCPT ); Mon, 22 May 2023 02:44:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51868 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231877AbjEVGoC (ORCPT ); Mon, 22 May 2023 02:44:02 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5732D188 for ; Sun, 21 May 2023 23:43:49 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id 3f1490d57ef6-ba83fed50e1so7033331276.1 for ; Sun, 21 May 2023 23:43:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1684737828; x=1687329828; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=HtRUH772YtV0qPeVzoZd+sfJkmumkzDNUnRMC3UQCcg=; b=NNBwSTFIiyCdqGqw2b4i1yq/47LRh1xsrfmZCRo5cZzQEbwSVLZ8pKnE+LfMB0Sv+i K9kzhfBKgcoOUFOTBvVHqvFFLphQylLkC/nFisqyST+/nJXcd8cwaBGE6BgBre+NgYAP WKt/wMtN9hu9fZzdFy/eNrxJVtdBJtabp/zCjiO7E+PCNJF99AkqENLV/v0zcgMAM7QT 4QZfT7Ly7tvupd9MQeK3tVfiSL6GpEJ/YT3Kmx422mU5BI2N5hxtFUvkJVBX+D7vKg9G zBBBVfrfJ4+Wj7flOcPQ3wHBqx2lSGgBPaHrBCo3TETeDdZczX21WOmwgmqPA8WVCZtc xXXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684737828; x=1687329828; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=HtRUH772YtV0qPeVzoZd+sfJkmumkzDNUnRMC3UQCcg=; b=OsruwcJLPVOKEULwndEyMcDDUpmF260yYruFeskT1bAWdOgKkR0zsM8nGRvO6I0hcU ZwTnnxdpjcdSkmOBmhiZoMwkHm2D4RnJlWSqWUJqmoVYDT4HcRh94fGe/5BbF/KBmTKl qiSeht9TXtJCQrAsgLMqe9uHzj/0mBcs2nRt5VC+4z/om2G0SgvzPoQHsA/VdcavGX23 D00A1SW0id3BWGVItTnAitCrqL7KO7rDr7zNFbKM87j25AYsTiaEHIoHWVLl76G8z2O2 4sJm948eaMedHoa9oUhkF+FWj2IRF4TJUQS4Cj6kQAx/yx9gPUCfWZ+Q2yK9N++Sy02w WmGA== X-Gm-Message-State: AC+VfDxwdBoweOQcFUUGyuhC2bGggLY65jpT4xCQ6RsJwj00heSRsK23 SaX6jd04OoHByMNFKAtTiLA/t1NaEc1K X-Google-Smtp-Source: ACHHUZ5cD6+QLwi88ybhahjD/VfP3IQA+LiC4RmuZCcr7iQO6gQPZoJVP/dq9tXyYF3U2Q6o1YAKOVomcwIR X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:48d9:8c21:e099:7301]) (user=irogers job=sendgmr) by 2002:a5b:98b:0:b0:ba7:8628:93e2 with SMTP id c11-20020a5b098b000000b00ba7862893e2mr5636237ybq.4.1684737828309; Sun, 21 May 2023 23:43:48 -0700 (PDT) Date: Sun, 21 May 2023 23:43:13 -0700 In-Reply-To: <20230522064330.189127-1-irogers@google.com> Message-Id: <20230522064330.189127-7-irogers@google.com> Mime-Version: 1.0 References: <20230522064330.189127-1-irogers@google.com> X-Mailer: git-send-email 2.40.1.698.g37aff9b760-goog Subject: [PATCH v2 06/23] perf pmu: Detect ARM and hybrid PMUs with sysfs From: Ian Rogers To: Suzuki K Poulose , Mike Leach , Leo Yan , John Garry , Will Deacon , James Clark , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , Kajol Jain , Jing Zhang , Kan Liang , Zhengjun Xing , Ravi Bangoria , Madhavan Srinivasan , Athira Rajeev , Ming Wang , Huacai Chen , Sandipan Das , Dmitrii Dolgov <9erthalion6@gmail.com>, Sean Christopherson , Ali Saidi , Rob Herring , Thomas Richter , Kang Minchul , linux-kernel@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org is_arm_pmu_core detects a core PMU via the presence of a "cpus" file rather than a "cpumask" file. This pattern holds for hybrid PMUs so rename the function and remove redundant perf_pmu__is_hybrid tests. Add a new helper is_pmu_hybrid similar to is_pmu_core. Signed-off-by: Ian Rogers --- tools/perf/util/pmu.c | 29 ++++++++++++++++++----------- tools/perf/util/pmu.h | 1 + 2 files changed, 19 insertions(+), 11 deletions(-) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 729b1f166f80..0fa451c60c77 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -640,12 +640,14 @@ static char *pmu_id(const char *name) return str; } -/* - * PMU CORE devices have different name other than cpu in sysfs on some - * platforms. - * Looking for possible sysfs files to identify the arm core device. +/** + * is_sysfs_pmu_core() - PMU CORE devices have different name other than cpu in + * sysfs on some platforms like ARM or Intel hybrid. Looking for + * possible the cpus file in sysfs files to identify whether this is a + * core device. + * @name: The PMU name such as "cpu_atom". */ -static int is_arm_pmu_core(const char *name) +static int is_sysfs_pmu_core(const char *name) { char path[PATH_MAX]; @@ -811,7 +813,7 @@ void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu, struct pmu_add_cpu_aliases_map_data data = { .head = head, .name = pmu->name, - .cpu_name = is_arm_pmu_core(pmu->name) ? pmu->name : "cpu", + .cpu_name = is_sysfs_pmu_core(pmu->name) ? pmu->name : "cpu", .pmu = pmu, }; @@ -1649,22 +1651,27 @@ static int cmp_sevent(const void *a, const void *b) bool is_pmu_core(const char *name) { - return !strcmp(name, "cpu") || is_arm_pmu_core(name); + return !strcmp(name, "cpu") || is_sysfs_pmu_core(name); +} + +bool is_pmu_hybrid(const char *name) +{ + return !strcmp(name, "cpu_atom") || !strcmp(name, "cpu_core"); } bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu) { - return is_pmu_core(pmu->name) || perf_pmu__is_hybrid(pmu->name); + return is_pmu_core(pmu->name); } bool perf_pmu__supports_wildcard_numeric(const struct perf_pmu *pmu) { - return is_pmu_core(pmu->name) || perf_pmu__is_hybrid(pmu->name); + return is_pmu_core(pmu->name); } bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu) { - return !perf_pmu__is_hybrid(pmu->name); + return !is_pmu_hybrid(pmu->name); } static bool pmu_alias_is_duplicate(struct sevent *alias_a, @@ -1718,7 +1725,7 @@ void print_pmu_events(const struct print_callbacks *print_cb, void *print_state) pmu = NULL; j = 0; while ((pmu = perf_pmu__scan(pmu)) != NULL) { - bool is_cpu = is_pmu_core(pmu->name) || perf_pmu__is_hybrid(pmu->name); + bool is_cpu = is_pmu_core(pmu->name); list_for_each_entry(event, &pmu->aliases, list) { aliases[j].event = event; diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 49033bb134f3..99e0273027bf 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -220,6 +220,7 @@ void perf_pmu__del_formats(struct list_head *formats); struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu); bool is_pmu_core(const char *name); +bool is_pmu_hybrid(const char *name); bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu); bool perf_pmu__supports_wildcard_numeric(const struct perf_pmu *pmu); bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu); -- 2.40.1.698.g37aff9b760-goog