From nobody Mon Feb 9 05:52:42 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 CF450EB64DD for ; Tue, 11 Jul 2023 05:59:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231190AbjGKF7b (ORCPT ); Tue, 11 Jul 2023 01:59:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230439AbjGKF7Z (ORCPT ); Tue, 11 Jul 2023 01:59:25 -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 69C23E64 for ; Mon, 10 Jul 2023 22:59:20 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-57325434999so63683927b3.1 for ; Mon, 10 Jul 2023 22:59:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1689055159; x=1691647159; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=pCvcip3cNS9Uck7qRANxqTRMPqOA6kzu5yAG3bPx7q8=; b=kgGfCtGt6f/VllzJStsFabPTDGU2UGd7nA4n71pjFUbrOxW1q26EhZnnPIVbKPK2G2 oURkOkoNRUJocZ0NDLQBhPW1Y1bT34IzxH75QLtgPu/0vrzeHfWp7ZSeF+zHrCQ6Ts5Y bInSKahA5vx9v48KISRfLD+qdLuFlKTA02Ikcmm1S7D6ee1Hx+/IVIKfiKn5rWCZ+t/n vnb8Yma6UYMKvcVAxdZGBWyzevBFz2NGj+j88BRipaykA/sZEWk1xvW1Qyt6Cy84iTSO vOAq7c9xk9qn2/M+cTILPEIcLghk4oS0tFdZGjE0dT2d+RYib/4VwcIW61pd564PxKZc IEHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689055159; x=1691647159; 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=pCvcip3cNS9Uck7qRANxqTRMPqOA6kzu5yAG3bPx7q8=; b=IuFkIsw1AuLFzUNUDub93NMrLxJkrk+Rf+VVrVQYkdQ5MeOFLevyS7mFUlMZfcy1Bl ZPVgaL1MNv3cRqpzK6cJ+fpvjRGjaVfBRcx339auJ8Ky7rlouWolHxptxs83gXo8MGP9 XxR302F8Rkr8xnvpAU1jA8hWuDuaeeLfqgjXGftoIxLa2VPrQ4BvR9dR3EQGtA9efStY WRbwy+BaI9rgYmSOQ/DbzEoOf04QJhnhleXzxrHSLsHjcNTEF7l4JGbgv5kQWcpHO8b3 5DfJp1dJrtopgkFBXsG+ooBiEkG8v6bfxoO9U/9t3dFtXIi/GWOI9jesKvYohiMzrmi/ mRNA== X-Gm-Message-State: ABy/qLZrHujZZdLspFpClGMco3Rmotuud7RkLYWcJjS40lkaRxAWM8TO CYiB/YmeEx/8XnBYHKAfuMIn8VOUqXxJ X-Google-Smtp-Source: APBJJlF/hQwvZLvooEgTBAGj8HUCE7NLrFqxQRoLCBxX/VAawfd2grekYqVfsjiVzIubUZjSq3dVhrixaEkk X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:2efd:fc0f:9eaa:3bd5]) (user=irogers job=sendgmr) by 2002:a25:8882:0:b0:c4d:4b23:337 with SMTP id d2-20020a258882000000b00c4d4b230337mr86042ybl.11.1689055159701; Mon, 10 Jul 2023 22:59:19 -0700 (PDT) Date: Mon, 10 Jul 2023 22:58:57 -0700 In-Reply-To: <20230711055859.1242497-1-irogers@google.com> Message-Id: <20230711055859.1242497-2-irogers@google.com> Mime-Version: 1.0 References: <20230711055859.1242497-1-irogers@google.com> X-Mailer: git-send-email 2.41.0.390.g38632f3daf-goog Subject: [PATCH v1 1/3] perf pmus: Sort pmus by name then suffix 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 , 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" Sort PMUs by name. If two PMUs have the same name but differ by suffix, sort the suffixes numerically. For example, "breakpoint" comes before "cpu", "uncore_imc_free_running_0" comes before "uncore_imc_free_running_1". Signed-off-by: Ian Rogers --- tools/perf/util/pmus.c | 48 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c index c58ba9fb6a36..3581710667b0 100644 --- a/tools/perf/util/pmus.c +++ b/tools/perf/util/pmus.c @@ -1,8 +1,10 @@ // SPDX-License-Identifier: GPL-2.0 #include +#include #include #include #include +#include #include #include #include @@ -33,6 +35,31 @@ static LIST_HEAD(other_pmus); static bool read_sysfs_core_pmus; static bool read_sysfs_all_pmus; =20 +static int pmu_name_len_no_suffix(const char *str, unsigned long *num) +{ + int orig_len, len; + + orig_len =3D len =3D strlen(str); + + /* Non-uncore PMUs have their full length, for example, i915. */ + if (strncmp(str, "uncore_", 7)) + return len; + + /* + * Count trailing digits and '_', if '_{num}' suffix isn't present use + * the full length. + */ + while (len > 0 && isdigit(str[len - 1])) + len--; + + if (len > 0 && len !=3D orig_len && str[len - 1] =3D=3D '_') { + if (num) + *num =3D strtoul(&str[len], NULL, 10); + return len - 1; + } + return orig_len; +} + void perf_pmus__destroy(void) { struct perf_pmu *pmu, *tmp; @@ -122,6 +149,25 @@ static struct perf_pmu *perf_pmu__find2(int dirfd, con= st char *name) return perf_pmu__lookup(core_pmu ? &core_pmus : &other_pmus, dirfd, name); } =20 +static int pmus_cmp(void *priv __maybe_unused, + const struct list_head *lhs, const struct list_head *rhs) +{ + unsigned long lhs_num, rhs_num; + struct perf_pmu *lhs_pmu =3D container_of(lhs, struct perf_pmu, list); + struct perf_pmu *rhs_pmu =3D container_of(rhs, struct perf_pmu, list); + const char *lhs_pmu_name =3D lhs_pmu->name ?: ""; + const char *rhs_pmu_name =3D rhs_pmu->name ?: ""; + int lhs_pmu_name_len =3D pmu_name_len_no_suffix(lhs_pmu_name, &lhs_num); + int rhs_pmu_name_len =3D pmu_name_len_no_suffix(rhs_pmu_name, &rhs_num); + int ret =3D strncmp(lhs_pmu_name, rhs_pmu_name, + lhs_pmu_name_len < rhs_pmu_name_len ? lhs_pmu_name_len : rhs_pmu_name_l= en); + + if (lhs_pmu_name_len !=3D rhs_pmu_name_len || ret !=3D 0 || lhs_pmu_name_= len =3D=3D 0) + return ret; + + return lhs_num < rhs_num ? -1 : (lhs_num > rhs_num ? 1 : 0); +} + /* Add all pmus in sysfs to pmu list: */ static void pmu_read_sysfs(bool core_only) { @@ -156,6 +202,8 @@ static void pmu_read_sysfs(bool core_only) if (!perf_pmu__create_placeholder_core_pmu(&core_pmus)) pr_err("Failure to set up any core PMUs\n"); } + list_sort(NULL, &core_pmus, pmus_cmp); + list_sort(NULL, &other_pmus, pmus_cmp); if (!list_empty(&core_pmus)) { read_sysfs_core_pmus =3D true; if (!core_only) --=20 2.41.0.390.g38632f3daf-goog