From nobody Sun Feb 8 17:43:12 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 13C38C7EE23 for ; Fri, 26 May 2023 21:54:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243937AbjEZVyg (ORCPT ); Fri, 26 May 2023 17:54:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243809AbjEZVy2 (ORCPT ); Fri, 26 May 2023 17:54:28 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6DD3135 for ; Fri, 26 May 2023 14:54:21 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id 3f1490d57ef6-babb76a9831so2570183276.2 for ; Fri, 26 May 2023 14:54:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1685138061; x=1687730061; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=V1U2ziVcPpOm/qKHHr+WvX9njq8KvU37fpVV+c0iggs=; b=No29L90urRbGu/qvhOIfzOBjsT7tUDaJTfhsBWC7LE/Xm9DPIn0Q8VxJ72ZqDHv0nF 9u1cIT9WCYcRsEgulDGtMCbBQ1y1jhpRHbdH1Mcxmci8YskYXDQuEjfn5VMBDmLIsuYM Nuvp7EXZZwcJETnyRH8PP0XEvBsqAZh6igQrnINsRd7DcMh/vwuZvN7TYHJKv6An9aLI VnwBN/yhy3hRe+k1WvDL34jRZT/nl78bEODrHi5EZFHmMTw1sh9MfyK6I2UPKfvu7HdE 0J/P6XnTLuO/fZCSl1fseHYzQ7rzO+kedIYy+I8hxZ/9bvjlnXMcmTzPL8v3lvNnTI9s 4GSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685138061; x=1687730061; 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=V1U2ziVcPpOm/qKHHr+WvX9njq8KvU37fpVV+c0iggs=; b=UibpoJUPRKVVqA+teiKMrdBeInyDzrZVNbafCOPUTOFW2ianEoMp+rNBKbLdOKBx6t 4kW/chy8+XhuH74OPd+p/tdbv+0hMjp/th5aVIsR5EC30q/y/NchwlDCZWwxU82T2tgE OTaOev8Fa9p6pNbWFO5qDvFlWWBCnQsUZiZb/BYGSc19GDqhM6m/Q6fVDmfh7vYFQ2Dj UEi0XzfTuSX+zt4C3j40oPJjObyfJXcoSnEOXZHaSQJs1l/ZOHCdNH/6zOxV9seSUspf SYoX+yJOWn60taCH4djJjRM9r9YQ/mBvA1aCRLVJsxo0qlTc7OIbYzhJcNRUSBEufPYJ 3zJQ== X-Gm-Message-State: AC+VfDyZeztJVzpjh2ijzZjx+W5PTh68czF5fMsUsb1ofVoMzR2Nc4XO PEcdm1Qouovj/i44dlhZrI6QgaxuoW1l X-Google-Smtp-Source: ACHHUZ6Y64CaN/GUfKSzgxMO3uJ1KmJVI9+EkobZRekXnEKWJ7g3saJJIKpdBGiXtTuJN9eBLewNze2f4K18 X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:3b4e:312c:644:a642]) (user=irogers job=sendgmr) by 2002:a25:aca1:0:b0:bab:9391:470a with SMTP id x33-20020a25aca1000000b00bab9391470amr1218547ybi.0.1685138061035; Fri, 26 May 2023 14:54:21 -0700 (PDT) Date: Fri, 26 May 2023 14:53:38 -0700 In-Reply-To: <20230526215410.2435674-1-irogers@google.com> Message-Id: <20230526215410.2435674-4-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 03/35] perf cpumap: Add equal function 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" Equality is a useful property to compare after merging and intersecting maps. Signed-off-by: Ian Rogers Reviewed-by: Kan Liang --- tools/lib/perf/cpumap.c | 21 ++++++++++++++++ tools/lib/perf/include/perf/cpumap.h | 2 ++ tools/perf/tests/cpumap.c | 37 ++++++++++++++++++++++++++++ 3 files changed, 60 insertions(+) diff --git a/tools/lib/perf/cpumap.c b/tools/lib/perf/cpumap.c index d4f3a1a12522..48595a3ad69c 100644 --- a/tools/lib/perf/cpumap.c +++ b/tools/lib/perf/cpumap.c @@ -321,6 +321,27 @@ bool perf_cpu_map__has(const struct perf_cpu_map *cpus= , struct perf_cpu cpu) return perf_cpu_map__idx(cpus, cpu) !=3D -1; } =20 +bool perf_cpu_map__equal(const struct perf_cpu_map *lhs, const struct perf= _cpu_map *rhs) +{ + int nr; + + if (lhs =3D=3D rhs) + return true; + + if (!lhs || !rhs) + return false; + + nr =3D perf_cpu_map__nr(lhs); + if (nr !=3D perf_cpu_map__nr(rhs)) + return false; + + for (int idx =3D 0; idx < nr; idx++) { + if (RC_CHK_ACCESS(lhs)->map[idx].cpu !=3D RC_CHK_ACCESS(rhs)->map[idx].c= pu) + return false; + } + return true; +} + struct perf_cpu perf_cpu_map__max(const struct perf_cpu_map *map) { struct perf_cpu result =3D { diff --git a/tools/lib/perf/include/perf/cpumap.h b/tools/lib/perf/include/= perf/cpumap.h index 0466c4216fbb..d0ae9552f8e2 100644 --- a/tools/lib/perf/include/perf/cpumap.h +++ b/tools/lib/perf/include/perf/cpumap.h @@ -28,6 +28,8 @@ LIBPERF_API int perf_cpu_map__nr(const struct perf_cpu_ma= p *cpus); LIBPERF_API bool perf_cpu_map__empty(const struct perf_cpu_map *map); LIBPERF_API struct perf_cpu perf_cpu_map__max(const struct perf_cpu_map *m= ap); LIBPERF_API bool perf_cpu_map__has(const struct perf_cpu_map *map, struct = perf_cpu cpu); +LIBPERF_API bool perf_cpu_map__equal(const struct perf_cpu_map *lhs, + const struct perf_cpu_map *rhs); =20 #define perf_cpu_map__for_each_cpu(cpu, idx, cpus) \ for ((idx) =3D 0, (cpu) =3D perf_cpu_map__cpu(cpus, idx); \ diff --git a/tools/perf/tests/cpumap.c b/tools/perf/tests/cpumap.c index 83805690c209..7730fc2ab40b 100644 --- a/tools/perf/tests/cpumap.c +++ b/tools/perf/tests/cpumap.c @@ -211,11 +211,48 @@ static int test__cpu_map_intersect(struct test_suite = *test __maybe_unused, return ret; } =20 +static int test__cpu_map_equal(struct test_suite *test __maybe_unused, int= subtest __maybe_unused) +{ + struct perf_cpu_map *any =3D perf_cpu_map__dummy_new(); + struct perf_cpu_map *one =3D perf_cpu_map__new("1"); + struct perf_cpu_map *two =3D perf_cpu_map__new("2"); + struct perf_cpu_map *empty =3D perf_cpu_map__intersect(one, two); + struct perf_cpu_map *pair =3D perf_cpu_map__new("1-2"); + struct perf_cpu_map *tmp; + struct perf_cpu_map *maps[] =3D {empty, any, one, two, pair}; + + for (size_t i =3D 0; i < ARRAY_SIZE(maps); i++) { + /* Maps equal themself. */ + TEST_ASSERT_VAL("equal", perf_cpu_map__equal(maps[i], maps[i])); + for (size_t j =3D 0; j < ARRAY_SIZE(maps); j++) { + /* Maps dont't equal each other. */ + if (i =3D=3D j) + continue; + TEST_ASSERT_VAL("not equal", !perf_cpu_map__equal(maps[i], maps[j])); + } + } + + /* Maps equal made maps. */ + tmp =3D perf_cpu_map__merge(perf_cpu_map__get(one), two); + TEST_ASSERT_VAL("pair", perf_cpu_map__equal(pair, tmp)); + perf_cpu_map__put(tmp); + + tmp =3D perf_cpu_map__intersect(pair, one); + TEST_ASSERT_VAL("one", perf_cpu_map__equal(one, tmp)); + perf_cpu_map__put(tmp); + + for (size_t i =3D 0; i < ARRAY_SIZE(maps); i++) + perf_cpu_map__put(maps[i]); + + return TEST_OK; +} + static struct test_case tests__cpu_map[] =3D { TEST_CASE("Synthesize cpu map", cpu_map_synthesize), TEST_CASE("Print cpu map", cpu_map_print), TEST_CASE("Merge cpu map", cpu_map_merge), TEST_CASE("Intersect cpu map", cpu_map_intersect), + TEST_CASE("Equal cpu map", cpu_map_equal), { .name =3D NULL, } }; =20 --=20 2.41.0.rc0.172.g3f132b7071-goog