From nobody Sun Feb 8 17:42:58 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 0F444C77B73 for ; Fri, 26 May 2023 21:56:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244346AbjEZV4a (ORCPT ); Fri, 26 May 2023 17:56:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244190AbjEZVzy (ORCPT ); Fri, 26 May 2023 17:55:54 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2353310D8 for ; Fri, 26 May 2023 14:55:28 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-56183784dd3so16670987b3.3 for ; Fri, 26 May 2023 14:55:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1685138127; x=1687730127; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=vW2lbdpPJdg/r6QP2GPnX5xgemELHxkJ0mClCQxJlXE=; b=XgJYAm41O7NNFLVHPpeeRZju9bD5zUvsAC0wt/UXOVLw3GOfF0JaoBMe6TBnPqkDUE jYdH81MvGVvclARKFyJ+Jgl7dihH7i1nYuM33T1qAdu9hQxuma0ZNocFspbqG5fg53kf 4CrE581+2bLeQ/wzdCJdRvTbLVN5+U11VRZTFLjVH5/IOwxEBng7w3jNTu1ciOoSniUD DFKPeorSfxpLWSMYHLy6dm+O2HDNl5TYai1K5TOZvxeVRCUhuNBy43xF9GawgVp2vtYq dC5SFDsDu1an8pxHIAPY58ESVMsOOWY6NjEK8t3G7kD/zcEjKDJ/j8pZhZcvZTis1nwh rpdg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685138127; x=1687730127; 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=vW2lbdpPJdg/r6QP2GPnX5xgemELHxkJ0mClCQxJlXE=; b=P9ddR7cjoqjlX2iuOdCp4JZc3OZsCYnO67OqfC9zpzNXyFWgpGXDVzBlZbio0SQ25w fVqg8qhMozb+cWE/e0IEOHqO7jIBw0xu73aK2y/XRQdSEqRHcIjfcQ1X1WEp/s3kZgXX KgI/GkdayA1+XGiVDMyk5VnAjMvmpJCh4bwNxBg6+cOD+ik374DYBVTG1Z8AXTj5rOog UF47GXDZ1WmaWwoZEY+1We2GX2ZGzbFJ64ZQbkV+9yFzPliJLU1z3G8R1/WkHXlNO/bp xm2R6TfmwthCCJQ1KkQvHpPM4BbXUeAJIaI9m6DCJS/wW7WDHqBCXTg+JK5dIumm9MfD TN3A== X-Gm-Message-State: AC+VfDyNaKH9ojszG0JULPEkutX1NW/qjxoLBY//8B9BS6Vb5crh4baI i8ub/aTylPo21UVG8Z0oaZfN/RGkHvqj X-Google-Smtp-Source: ACHHUZ4NRRDlyH/flCqp3jYK/1HAot9LkkCV9xPcWa5EvIdoqnj1c7Po8JDOungTNQVgPDVDILQcujc4hqvO X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:3b4e:312c:644:a642]) (user=irogers job=sendgmr) by 2002:a81:b710:0:b0:565:cfdf:7a70 with SMTP id v16-20020a81b710000000b00565cfdf7a70mr64876ywh.2.1685138127743; Fri, 26 May 2023 14:55:27 -0700 (PDT) Date: Fri, 26 May 2023 14:54:08 -0700 In-Reply-To: <20230526215410.2435674-1-irogers@google.com> Message-Id: <20230526215410.2435674-34-irogers@google.com> Mime-Version: 1.0 References: <20230526215410.2435674-1-irogers@google.com> X-Mailer: git-send-email 2.41.0.rc0.172.g3f132b7071-goog Subject: [PATCH v4 33/35] perf pmus: Add function to return count of core PMUs 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" Add perf_pmus__num_core_pmus that will count core PMUs holding the result in a static. Reuse for perf_pmus__num_mem_pmus. Signed-off-by: Ian Rogers Reviewed-by: Kan Liang --- tools/perf/util/pmus.c | 21 ++++++++++++++------- tools/perf/util/pmus.h | 1 + 2 files changed, 15 insertions(+), 7 deletions(-) diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c index 6ecccb5ad03e..bf927aed162e 100644 --- a/tools/perf/util/pmus.c +++ b/tools/perf/util/pmus.c @@ -229,14 +229,8 @@ const struct perf_pmu *perf_pmus__pmu_for_pmu_filter(c= onst char *str) =20 int perf_pmus__num_mem_pmus(void) { - struct perf_pmu *pmu =3D NULL; - int count =3D 0; - /* All core PMUs are for mem events. */ - while ((pmu =3D perf_pmus__scan_core(pmu)) !=3D NULL) - count++; - - return count; + return perf_pmus__num_core_pmus(); } =20 /** Struct for ordering events as output in perf list. */ @@ -488,6 +482,19 @@ bool perf_pmus__has_hybrid(void) return has_hybrid; } =20 +int perf_pmus__num_core_pmus(void) +{ + static int count; + + if (!count) { + struct perf_pmu *pmu =3D NULL; + + while ((pmu =3D perf_pmus__scan_core(pmu)) !=3D NULL) + count++; + } + return count; +} + struct perf_pmu *evsel__find_pmu(const struct evsel *evsel) { struct perf_pmu *pmu =3D evsel->pmu; diff --git a/tools/perf/util/pmus.h b/tools/perf/util/pmus.h index 9de0222ed52b..27400a027d41 100644 --- a/tools/perf/util/pmus.h +++ b/tools/perf/util/pmus.h @@ -19,5 +19,6 @@ int perf_pmus__num_mem_pmus(void); void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, v= oid *print_state); bool perf_pmus__have_event(const char *pname, const char *name); bool perf_pmus__has_hybrid(void); +int perf_pmus__num_core_pmus(void); =20 #endif /* __PMUS_H */ --=20 2.41.0.rc0.172.g3f132b7071-goog