From nobody Fri Dec 19 21:48:27 2025 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 0972BC77B60 for ; Sat, 29 Apr 2023 05:39:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347272AbjD2FjW (ORCPT ); Sat, 29 Apr 2023 01:39:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39404 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347349AbjD2FjG (ORCPT ); Sat, 29 Apr 2023 01:39:06 -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 2F5E94221 for ; Fri, 28 Apr 2023 22:38:35 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-b9a7df507c5so997014276.1 for ; Fri, 28 Apr 2023 22:38:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1682746693; x=1685338693; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Y7D6E0hATCK7e1RhJ0eODuZwXaDaxrE5gp17wu1kd6s=; b=139kA4q02ubjRJRnm6P66WfukEPsn9I9wL+zbPwiH63hHQjcZEidMxyv4tdn/gzBBN kXYOWNoZrCCblw4cCt/V43hGZUhK9moyAHiso+BrRzjP4zGHxlGe9zTdacEl9kiwyAWl 6zfz210wxJC2cppSu7JBi4u5o2EcYwDbBXyqqNafcig6CIsX1N3DdDtL4AvoJUdAEsHW qBkacALi7PUPORmy95PLHmEwptG9l+9kv9RIjin/5yUDH0Vz1/WiU0FGD1a/7XvAMxT1 U6BsGqMb/X/d29puF85Iqk/G1wAZ8CQTmJpl6GXpQj7yRf/NkeIDvsMZvmHsiEf9knyv T50g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682746693; x=1685338693; h=cc: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=Y7D6E0hATCK7e1RhJ0eODuZwXaDaxrE5gp17wu1kd6s=; b=Y03Enuvy8cKogS3kjsPchba/Aa1nyhfHU/jgHYg4MQraVhMjox5Cz6boSEp4Tljhyx uaLOAp2TOynuv4uWC2EtkPcEqcyBte95Qr2LILRoXZKulsHLTHVw5gLwiFs8bghrvgcs BcO8JYIw3ozHAt1XSKriT15kVob3JFhTnNkHyGPDcUg6lpLLP6+fxfU9fVnKMpmQDTSc mfb04Y4Hhr0GK/HJP5+3ID96xxxDvbSG3mbxL1vXJoJJnhAFaWYsIf2/U4DXItQCSlaA +Z0eqxrXFICV9hHumf7htkGknYfLpDDYkaH3gmO1wVC0ItxQV5V4ZSGMaQ3HaxUpL+uR 7djg== X-Gm-Message-State: AC+VfDxOPxTcYzEx8eQcFvEhEwfPKloGmFZjuM/H/Yu9KIRg/DyRJpR6 m58QPcx2JpqUEERM+M9kJFLHsqL9iTXi X-Google-Smtp-Source: ACHHUZ5V31xnrIAjV8PXDVkbbmTFl1iK4hdMJMob0hURfue/MGSe5ZQglubKG46sy6cluCGXgawSvoMy+u5E X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:c563:7e28:fb7c:bce3]) (user=irogers job=sendgmr) by 2002:a25:c00b:0:b0:b99:4887:c736 with SMTP id c11-20020a25c00b000000b00b994887c736mr4431482ybf.3.1682746693497; Fri, 28 Apr 2023 22:38:13 -0700 (PDT) Date: Fri, 28 Apr 2023 22:34:41 -0700 In-Reply-To: <20230429053506.1962559-1-irogers@google.com> Message-Id: <20230429053506.1962559-22-irogers@google.com> Mime-Version: 1.0 References: <20230429053506.1962559-1-irogers@google.com> X-Mailer: git-send-email 2.40.1.495.gc816e09b53d-goog Subject: [PATCH v3 21/46] perf evsel: Modify group pmu name for software events From: Ian Rogers To: Arnaldo Carvalho de Melo , Kan Liang , Ahmad Yasin , Peter Zijlstra , Ingo Molnar , Stephane Eranian , Andi Kleen , Perry Taylor , Samantha Alt , Caleb Biggers , Weilin Wang , Edward Baker , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Adrian Hunter , Florian Fischer , Rob Herring , Zhengjun Xing , John Garry , Kajol Jain , Sumanth Korikkar , Thomas Richter , Tiezhu Yang , Ravi Bangoria , Leo Yan , Yang Jihong , James Clark , Suzuki Poulouse , Kang Minchul , Athira Rajeev , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Ian Rogers Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" If we have a group of {cycles,faults} then we need the faults software event to appear to be on the same PMU as cycles so that we don't split the group in parse_events__sort_events_and_fix_groups. This case is relatively easy as cycles is the leader and will have a PMU name. In the reverse case, {faults,cycles} we still need faults to appear to have the PMU name of cycles but the old behavior is just to return "cpu". For hybrid this fails as cycles will be on "cpu_core" or "cpu_atom", causing faults to be split into a different group. Change the behavior for software events so that the whole group is searched for the named PMU. Signed-off-by: Ian Rogers --- tools/perf/util/evsel.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 1cd04b5998d2..63522322e118 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -829,23 +829,26 @@ bool evsel__name_is(struct evsel *evsel, const char *= name) =20 const char *evsel__group_pmu_name(const struct evsel *evsel) { - const struct evsel *leader; + struct evsel *leader, *pos; =20 /* If the pmu_name is set use it. pmu_name isn't set for CPU and software= events. */ if (evsel->pmu_name) return evsel->pmu_name; /* * Software events may be in a group with other uncore PMU events. Use - * the pmu_name of the group leader to avoid breaking the software event - * out of the group. + * the pmu_name of the first non-software event to avoid breaking the + * software event out of the group. * * Aux event leaders, like intel_pt, expect a group with events from * other PMUs, so substitute the AUX event's PMU in this case. */ leader =3D evsel__leader(evsel); - if ((evsel->core.attr.type =3D=3D PERF_TYPE_SOFTWARE || evsel__is_aux_eve= nt(leader)) && - leader->pmu_name) { - return leader->pmu_name; + if (evsel->core.attr.type =3D=3D PERF_TYPE_SOFTWARE || evsel__is_aux_even= t(leader)) { + /* Starting with the leader, find the first event with a named PMU. */ + for_each_group_evsel(pos, leader) { + if (pos->pmu_name) + return pos->pmu_name; + } } =20 return "cpu"; --=20 2.40.1.495.gc816e09b53d-goog