From nobody Mon Feb 9 23:44:39 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 92D6FC04A6A for ; Thu, 10 Aug 2023 21:50:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229525AbjHJVuO (ORCPT ); Thu, 10 Aug 2023 17:50:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58714 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230526AbjHJVuK (ORCPT ); Thu, 10 Aug 2023 17:50:10 -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 F3938ED for ; Thu, 10 Aug 2023 14:50:09 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-57320c10635so17727117b3.3 for ; Thu, 10 Aug 2023 14:50:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1691704209; x=1692309009; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=igst4mk2Qe0yy+cOTE8q+SB7QjnlDxT/LagI8IxyHvs=; b=1Uh56WiLkoyMI5VvuQ64Fkl3EL0jo1oj3OUQZspMOCcGeQn1Z6MqFewMaAPYVc2J7o GkjBsp00AuA3CGVqZ2dkDm8HR1hjHNxwwIBiYlZio4VvZH5or4SpIxGnx0Uha/FmP8Xn HUPmripMAou5hS/8lKfpSQl1lwYOzrJ5jGysvXq0qeRrlYzUPVbfT+9ALqyXNrkJc56U /Ga/aScGDvGubfT8S3612p/aPhIZJ6syAh9UF8v2Nn3m2hjeR9HY1JgH/riCquwasQz3 DFbCnUVs/8qGv0tFo3GRHE5QWUcSC2rIOCtEU1lGi8vWdyXjeFJqViqVNrWWddBHijKW R4mw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691704209; x=1692309009; 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=igst4mk2Qe0yy+cOTE8q+SB7QjnlDxT/LagI8IxyHvs=; b=GScdGwFIUs2Fa78VJL+dfhhrhdfgkKY/x+D1GJrRFMMDCoxR/moooh1+fxajibDN8f YEAkIRQdp4LjjlkDjrbboo15IZEjIv8PjGyjbqlgWEtlJPY2BcQ7TnWgXn9nz1p6XyYo dT4TkMBE9HMAYuwwnnI7/3DmtknQ+Mb88nIqDPhjLX/onLgtsUmZXXOAkKZTrCEw9vkt ax2M2yhEe7HyJ6JzvFRP5tWbBvJ6sn/RV+ucLMwSrTB18eBX/wgWM1ce7vjdM62eBJSq 2PIhSk0YlzaFOI+PD2FwQbL9tU4GADqF8HiaBa/ddj6rVnPo48XFqdcWhIwIw0igkynD QCWg== X-Gm-Message-State: AOJu0YxwPUfGufLoXfTaU/Nf1+FcSo3qQG2qexctlTujjTPMo2h2Yq83 Pad39GA4Ci27nEILu3fWS6o9m1yLHtO2 X-Google-Smtp-Source: AGHT+IHqVFGK64ooHjYnqb74yHRXIzY5S8RKU8bRuw3+8hqn+avf1VIEUlEkbcFNHzS4NKdKdZJHa5r2QZM0 X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:797f:302e:992f:97f2]) (user=irogers job=sendgmr) by 2002:a25:e750:0:b0:d0e:e780:81b3 with SMTP id e77-20020a25e750000000b00d0ee78081b3mr58676ybh.2.1691704209270; Thu, 10 Aug 2023 14:50:09 -0700 (PDT) Date: Thu, 10 Aug 2023 14:49:51 -0700 In-Reply-To: <20230810214952.2934029-1-irogers@google.com> Message-Id: <20230810214952.2934029-3-irogers@google.com> Mime-Version: 1.0 References: <20230810214952.2934029-1-irogers@google.com> X-Mailer: git-send-email 2.41.0.640.ga95def55d0-goog Subject: [PATCH v2 2/3] perf pmus: Add scan that ignores duplicates, use for perf list From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , Kan Liang , Ravi Bangoria , Kajol Jain , John Garry , linux-perf-users@vger.kernel.org, linux-kernel@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" When there are multiple PMUs that differ only by suffix, by default just list the first one and skip all others. As the PMUs are sorted, the scan routine checks that the PMU names match and the numbers are consecutive. If "-v" is passed to "perf list" then list all PMUs. Signed-off-by: Ian Rogers --- tools/perf/builtin-list.c | 8 +++++ tools/perf/util/pmus.c | 54 ++++++++++++++++++++++++++++++++-- tools/perf/util/print-events.h | 1 + 3 files changed, 61 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c index 7fec2cca759f..8fe4ddf02c14 100644 --- a/tools/perf/builtin-list.c +++ b/tools/perf/builtin-list.c @@ -423,6 +423,13 @@ static void json_print_metric(void *ps __maybe_unused,= const char *group, strbuf_release(&buf); } =20 +static bool default_skip_duplicate_pmus(void *ps) +{ + struct print_state *print_state =3D ps; + + return !print_state->long_desc; +} + int cmd_list(int argc, const char **argv) { int i, ret =3D 0; @@ -434,6 +441,7 @@ int cmd_list(int argc, const char **argv) .print_end =3D default_print_end, .print_event =3D default_print_event, .print_metric =3D default_print_metric, + .skip_duplicate_pmus =3D default_skip_duplicate_pmus, }; const char *cputype =3D NULL; const char *unit_name =3D NULL; diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c index 3581710667b0..5073843aca19 100644 --- a/tools/perf/util/pmus.c +++ b/tools/perf/util/pmus.c @@ -275,6 +275,50 @@ struct perf_pmu *perf_pmus__scan_core(struct perf_pmu = *pmu) return NULL; } =20 +static struct perf_pmu *perf_pmus__scan_skip_duplicates(struct perf_pmu *p= mu) +{ + bool use_core_pmus =3D !pmu || pmu->is_core; + int last_pmu_name_len =3D 0; + unsigned long last_pmu_num =3D 0; + const char *last_pmu_name =3D (pmu && pmu->name) ? pmu->name : ""; + + if (!pmu) { + pmu_read_sysfs(/*core_only=3D*/false); + pmu =3D list_prepare_entry(pmu, &core_pmus, list); + } else + last_pmu_name_len =3D pmu_name_len_no_suffix(pmu->name ?: "", &last_pmu_= num); + + if (use_core_pmus) { + list_for_each_entry_continue(pmu, &core_pmus, list) { + unsigned long pmu_num =3D 0; + int pmu_name_len =3D pmu_name_len_no_suffix(pmu->name ?: "", &pmu_num); + + if (last_pmu_name_len =3D=3D pmu_name_len && + (last_pmu_num + 1 =3D=3D pmu_num) && + !strncmp(last_pmu_name, pmu->name ?: "", pmu_name_len)) { + last_pmu_num++; + continue; + } + return pmu; + } + pmu =3D NULL; + pmu =3D list_prepare_entry(pmu, &other_pmus, list); + } + list_for_each_entry_continue(pmu, &other_pmus, list) { + unsigned long pmu_num =3D 0; + int pmu_name_len =3D pmu_name_len_no_suffix(pmu->name ?: "", &pmu_num); + + if (last_pmu_name_len =3D=3D pmu_name_len && + (last_pmu_num + 1 =3D=3D pmu_num) && + !strncmp(last_pmu_name, pmu->name ?: "", pmu_name_len)) { + last_pmu_num++; + continue; + } + return pmu; + } + return NULL; +} + const struct perf_pmu *perf_pmus__pmu_for_pmu_filter(const char *str) { struct perf_pmu *pmu =3D NULL; @@ -429,10 +473,16 @@ void perf_pmus__print_pmu_events(const struct print_c= allbacks *print_cb, void *p int printed =3D 0; int len, j; struct sevent *aliases; + struct perf_pmu *(*scan_fn)(struct perf_pmu *); + + if (print_cb->skip_duplicate_pmus(print_state)) + scan_fn =3D perf_pmus__scan_skip_duplicates; + else + scan_fn =3D perf_pmus__scan; =20 pmu =3D NULL; len =3D 0; - while ((pmu =3D perf_pmus__scan(pmu)) !=3D NULL) { + while ((pmu =3D scan_fn(pmu)) !=3D NULL) { list_for_each_entry(event, &pmu->aliases, list) len++; if (pmu->selectable) @@ -445,7 +495,7 @@ void perf_pmus__print_pmu_events(const struct print_cal= lbacks *print_cb, void *p } pmu =3D NULL; j =3D 0; - while ((pmu =3D perf_pmus__scan(pmu)) !=3D NULL) { + while ((pmu =3D scan_fn(pmu)) !=3D NULL) { bool is_cpu =3D pmu->is_core; =20 list_for_each_entry(event, &pmu->aliases, list) { diff --git a/tools/perf/util/print-events.h b/tools/perf/util/print-events.h index d7fab411e75c..bf4290bef0cd 100644 --- a/tools/perf/util/print-events.h +++ b/tools/perf/util/print-events.h @@ -26,6 +26,7 @@ struct print_callbacks { const char *expr, const char *threshold, const char *unit); + bool (*skip_duplicate_pmus)(void *print_state); }; =20 /** Print all events, the default when no options are specified. */ --=20 2.41.0.640.ga95def55d0-goog