From nobody Mon Feb 9 17:22:12 2026 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 DF9C5C77B7C for ; Wed, 24 May 2023 22:19:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237188AbjEXWTJ (ORCPT ); Wed, 24 May 2023 18:19:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45862 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236734AbjEXWSt (ORCPT ); Wed, 24 May 2023 18:18:49 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 668341A2 for ; Wed, 24 May 2023 15:18:47 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-ba81b238ee8so2876756276.0 for ; Wed, 24 May 2023 15:18:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1684966726; x=1687558726; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=rFns1xCRwQs2VyvHbQeG+YbR09DfXce+1D3kwfuUbnc=; b=QBr9lERJqVOyRESMrYuu86b2CdwP8E37LjcND2+YwAsaaYAwrXeS6BLSwafdlxK582 1YgxVxE51wwGv+MrZUjxItnJYOoIch1+Hlf6+GWfUCygqxEYKJb0b6v2CmDirxj7b9Hd n8C/uLbNhq+0WIAbhLhQFfHXsXpmEbPkjb1vT8dIUiHCSRIDv4IPgal067zwTt2CVv2d s+gLhZ4BMoZRaUTH8XNILpUOZ32qsYcQ1OWhL/TY/AarkNrfQZd8TOCMXSJ4miuSHTEM amZTsMRWpEHsvCOU+gQ2sgWYxcJ3Mj9CQShfjDTOBP/+eisezlXKsDvNsi13BI79bD4Q dX3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684966726; x=1687558726; 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=rFns1xCRwQs2VyvHbQeG+YbR09DfXce+1D3kwfuUbnc=; b=dILMcVe4vXCyFRXzK6IUmYcRu6/FAdyJEIXyefWvmPv/slW25pGFnm9/uZ/OpbTmHj f3h67admajG/3AxPj1dMqmC0+STFw69Jcmhh7HCHLTpOAOWdfTEo53ljTGE8JWprIkit 4DGkqMjVzpsx5mRfmjrEfI+Hh3nHB/r3OS1BW3ITiwGshFc+uQ1jooxfPLjevSXjWgTk WpTGj0aaW1KJ4wpWTIIjOsb6MFbP1j+nrHJxOp1V5l/mJyek6y0JOu/an3yb+HHvb0Rq GcyZfs/XLYKf81kFT2s3dWyXwGc6hLB3RRFR7IvVoXiSQoNlJFS1eEupq/nlB9zEbm+/ pFRg== X-Gm-Message-State: AC+VfDyJZ9us3XQOQznxoX396kehonHAbtyd/mnSVFeLCe/4Jltf1Q1m paZTWCHw19JMLW7bDMUdvFdLfQAgVPIy X-Google-Smtp-Source: ACHHUZ5LWVtjDgkHe3VGgp6svl3iqUT5s26of6Cnt+3BMjpCYvoth9HVqtVzYx+uGVMnna+JIgbHZhIaupNd X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:7aa7:3d2d:76ae:8e96]) (user=irogers job=sendgmr) by 2002:a25:5285:0:b0:ba8:8d92:caea with SMTP id g127-20020a255285000000b00ba88d92caeamr579597ybb.1.1684966726491; Wed, 24 May 2023 15:18:46 -0700 (PDT) Date: Wed, 24 May 2023 15:18:01 -0700 In-Reply-To: <20230524221831.1741381-1-irogers@google.com> Message-Id: <20230524221831.1741381-6-irogers@google.com> Mime-Version: 1.0 References: <20230524221831.1741381-1-irogers@google.com> X-Mailer: git-send-email 2.40.1.698.g37aff9b760-goog Subject: [PATCH v3 05/35] 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 f4f0afbc391c..7392cec725bf 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -643,12 +643,14 @@ static char *pmu_id(const char *name) return str; } =20 -/* - * 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 c= pu 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]; =20 @@ -814,7 +816,7 @@ void pmu_add_cpu_aliases_table(struct list_head *head, = struct perf_pmu *pmu, struct pmu_add_cpu_aliases_map_data data =3D { .head =3D head, .name =3D pmu->name, - .cpu_name =3D is_arm_pmu_core(pmu->name) ? pmu->name : "cpu", + .cpu_name =3D is_sysfs_pmu_core(pmu->name) ? pmu->name : "cpu", .pmu =3D pmu, }; =20 @@ -1647,22 +1649,27 @@ static int cmp_sevent(const void *a, const void *b) =20 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"); } =20 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); } =20 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); } =20 bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu) { - return !perf_pmu__is_hybrid(pmu->name); + return !is_pmu_hybrid(pmu->name); } =20 static bool pmu_alias_is_duplicate(struct sevent *alias_a, @@ -1716,7 +1723,7 @@ void print_pmu_events(const struct print_callbacks *p= rint_cb, void *print_state) pmu =3D NULL; j =3D 0; while ((pmu =3D perf_pmu__scan(pmu)) !=3D NULL) { - bool is_cpu =3D is_pmu_core(pmu->name) || perf_pmu__is_hybrid(pmu->name); + bool is_cpu =3D is_pmu_core(pmu->name); =20 list_for_each_entry(event, &pmu->aliases, list) { aliases[j].event =3D event; diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 0e0cb6283594..f50919f1b34c 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); =20 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); --=20 2.40.1.698.g37aff9b760-goog