From nobody Wed Apr 1 09:44:33 2026 Received: from mail-dy1-f202.google.com (mail-dy1-f202.google.com [74.125.82.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9700C3A382B for ; Tue, 31 Mar 2026 18:54:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774983268; cv=none; b=rlJ8RJEVHeOJRXW+kmjWVVGgT6fJ5q3ucF3fT8USeCwrjdRt2bJWmUADsXlQm3N92XJJ1gdUTD4mCh7TUFMb7jQBP43ojhOwFdwCi8LgjQdFX8nH6wMJDQlKDynDS6r1yhkpoQXna1sssIU7d5JTodhMEYlDqpKKtW9pNdfD6vo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774983268; c=relaxed/simple; bh=3orYPD3QB4yX6PQ15sf5HywGOqRWxIKnyo2pIzYK8Kk=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=hhELVal4vfJuNo5NUEUGt1fdwpXIiqqcicONcYZ2hYJumEnBQxJpDnnPIRnnL5neDna+Fe3llwcnohWPAPs+ge9hzKBkYaIQDe2tcskfs4yocTOsVg6HN7BAVCch46yxu5mbfHK9JB2x+in96xzS/89j8QQHGjQp2SKmPl2WYKU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=jtsC+s3/; arc=none smtp.client-ip=74.125.82.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="jtsC+s3/" Received: by mail-dy1-f202.google.com with SMTP id 5a478bee46e88-2c0f6593ef5so7696967eec.1 for ; Tue, 31 Mar 2026 11:54:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1774983267; x=1775588067; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=uzMILqX/Y0yJuUZYZeWmrcmvp8X/JhTFsXpLylvsAF8=; b=jtsC+s3/QL8FHL+majkR60NcHz7N1cSRhzG7EFCVJd6Fdj0EFGI1IN2D4NgJX+g8Qi 4nY5Er44Mvi8OXnsjaXNplMQq0aLiPPc85ttKV2BeL1+u69wP1LiAATpCT7thh+OUkz/ m2rQeBfsVZ5gVkQfCjKDmvcwcfPZ7Tzf6R/SWJS9j1TFNMLvo+iVZ2plvXIscGKhnfgY IdHGea2LQHu/R8pLJwjmz4NXBHrSX/m5GEOj+sBg/sYkLrNEeV3hDWJV9Tlua/B+B9NT 8XGZmgpGmIMsVdY77s5XEath0KbbFWbDgwLByyH7Bkg12ZvhJll5CgO7weLpuGWhQR5x DEcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774983267; x=1775588067; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=uzMILqX/Y0yJuUZYZeWmrcmvp8X/JhTFsXpLylvsAF8=; b=Z7VWZG9e3RMMWR4qVcCs9xEPXfeBNNNhVobDmctBt3z89bCTItnqCFgKRaFrqzSZXR 9UEO6+/J3DXwDmbRRp2BTIPwEs83nq3dKWEnIWErCH5LDJE916gtVOSJEoOcSp5XCkAs wIhp7Xj/A3EjgEEIGv1UWEjPWtm3u/mQuKhiP9T29Xt/j2HATxflpZKD4GCIUAr98ouz rm5zfOR21Knwfam7Daj1L23U/rY4zgUoN0MKSU5zeIO8vL5mmdvy3D4p4zBjZg3VAUbk fvLEgZYAmu+CJ2xWKthB7Lq/1VD9OU8zD21RBJGaW+Gbf9+mckLty3Ck8fWYGysAl0uM BzeQ== X-Forwarded-Encrypted: i=1; AJvYcCVfnvrlZZbYR0sTgMMF3k6CLv03/iuCuyDrglIpD9KafAK9voFDbgPH7xA5kSBNZzFZbc22PKSLHK8mBwk=@vger.kernel.org X-Gm-Message-State: AOJu0YwQ2WVbxg7rDyXVfwHtIn7PyC/AJysz/vXYPZOjrVkBR8hYpHNN bri4zFqXCoKiw6E5j6f2IIpTZr+yWVMP12Nzkgr2RrEeiM9FUXKBw7kR86+rn/GDiVWehZO/5Io c9CSaoex+jA== X-Received: from dycng19.prod.google.com ([2002:a05:7300:ce13:b0:2c6:6824:b731]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7301:6085:b0:2c7:8e1c:9566 with SMTP id 5a478bee46e88-2c9326aa4a0mr223577eec.16.1774983266429; Tue, 31 Mar 2026 11:54:26 -0700 (PDT) Date: Tue, 31 Mar 2026 11:54:18 -0700 In-Reply-To: <20260331185419.4085479-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260331165207.4016392-1-irogers@google.com> <20260331185419.4085479-1-irogers@google.com> X-Mailer: git-send-email 2.53.0.1118.gaef5881109-goog Message-ID: <20260331185419.4085479-2-irogers@google.com> Subject: [PATCH v3 1/2] perf tests: Add test for uncore event sorting From: Ian Rogers To: namhyung@kernel.org Cc: irogers@google.com, 9erthalion6@gmail.com, acme@kernel.org, adrian.hunter@intel.com, alexander.shishkin@linux.intel.com, collin.funk1@gmail.com, german.gomez@arm.com, james.clark@linaro.org, jolsa@kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, zide.chen@intel.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add a test for uncore event sorting matching multiple PMUs. Uncore PMUs may have a common prefix, like the PMUs uncore_imc_free_running_0 and uncore_imc_free_running_1 have a prefix of uncore_imc_free_running. Parsing an event group like "{data_read,data_write}" for those PMUs should result with two groups "{uncore_imc_free_running_0/data_read/,uncore_imc_free_running_0/data_write= /}, {uncore_imc_free_running_1/data_read/,uncore_imc_free_running_1/data_write/= }" which means the evsels need resorting as when initially parsed the evsels are ordered with mixed PMUs: "{uncore_imc_free_running_0/data_read/,uncore_imc_free_running_1/data_read/, uncore_imc_free_running_0/data_write/,uncore_imc_free_running_1/data_write/= }". Signed-off-by: Ian Rogers Tested-by: Zide Chen --- tools/perf/tests/Build | 1 + tools/perf/tests/builtin-test.c | 1 + tools/perf/tests/tests.h | 1 + tools/perf/tests/uncore-event-sorting.c | 122 ++++++++++++++++++++++++ 4 files changed, 125 insertions(+) create mode 100644 tools/perf/tests/uncore-event-sorting.c diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index c2a67ce45941..66944a4f4968 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -3,6 +3,7 @@ perf-test-y +=3D builtin-test.o perf-test-y +=3D tests-scripts.o perf-test-y +=3D parse-events.o +perf-test-y +=3D uncore-event-sorting.o perf-test-y +=3D dso-data.o perf-test-y +=3D vmlinux-kallsyms.o perf-test-y +=3D openat-syscall.o diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-tes= t.c index 06507066213b..f2c135891477 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -71,6 +71,7 @@ static struct test_suite *generic_tests[] =3D { &suite__basic_mmap, &suite__mem, &suite__parse_events, + &suite__uncore_event_sorting, &suite__expr, &suite__PERF_RECORD, &suite__pmu, diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index f5f1238d1f7f..ee00518bf36f 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -177,6 +177,7 @@ DECLARE_SUITE(sigtrap); DECLARE_SUITE(event_groups); DECLARE_SUITE(symbols); DECLARE_SUITE(util); +DECLARE_SUITE(uncore_event_sorting); DECLARE_SUITE(subcmd_help); DECLARE_SUITE(kallsyms_split); =20 diff --git a/tools/perf/tests/uncore-event-sorting.c b/tools/perf/tests/unc= ore-event-sorting.c new file mode 100644 index 000000000000..7e61e46283d5 --- /dev/null +++ b/tools/perf/tests/uncore-event-sorting.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) +#include "tests.h" +#include "debug.h" +#include "parse-events.h" +#include "pmu.h" +#include "pmus.h" +#include "evlist.h" +#include + +struct match_state { + char *event1; + char *event2; +}; + +static int event_cb(void *state, struct pmu_event_info *info) +{ + struct match_state *m =3D state; + + if (!m->event1) { + m->event1 =3D strdup(info->name); + } else if (!m->event2) { + if (strcmp(m->event1, info->name)) { + m->event2 =3D strdup(info->name); + return 1; + } + } + return 0; +} + +static int test__uncore_event_sorting(struct test_suite *test __maybe_unus= ed, + int subtest __maybe_unused) +{ + struct evlist *evlist; + struct parse_events_error err; + struct evsel *evsel; + struct perf_pmu *pmu =3D NULL; + char *pmu_prefix =3D NULL; + struct match_state m =3D { NULL, NULL }; + char buf[1024]; + int ret; + + while ((pmu =3D perf_pmus__scan(pmu)) !=3D NULL) { + size_t len; + struct perf_pmu *sibling; + + if (pmu->is_core) + continue; + + len =3D pmu_name_len_no_suffix(pmu->name); + if (len =3D=3D strlen(pmu->name)) + continue; + + sibling =3D pmu; + while ((sibling =3D perf_pmus__scan(sibling)) !=3D NULL) { + if (sibling->is_core) + continue; + if (pmu_name_len_no_suffix(sibling->name) =3D=3D len && + !strncmp(pmu->name, sibling->name, len)) + break; + } + + if (!sibling) + continue; + + m.event1 =3D m.event2 =3D NULL; + perf_pmu__for_each_event(pmu, false, &m, event_cb); + + if (m.event1 && m.event2) { + pmu_prefix =3D strndup(pmu->name, len); + break; + } + free(m.event1); + } + + if (!pmu_prefix) { + pr_debug("No suitable uncore PMU found\n"); + return TEST_SKIP; + } + + evlist =3D evlist__new(); + if (!evlist) + return TEST_FAIL; + + snprintf(buf, sizeof(buf), "{%s/%s/,%s/%s/}", + pmu_prefix, m.event1, pmu_prefix, m.event2); + pr_debug("Parsing: %s\n", buf); + + parse_events_error__init(&err); + ret =3D parse_events(evlist, buf, &err); + if (ret) { + pr_debug("parse_events failed\n"); + ret =3D TEST_FAIL; + goto out_err; + } + + TEST_ASSERT_VAL("Number of events is > 0", evlist->core.nr_entries > 0); + TEST_ASSERT_EQUAL("Number of events is a multiple of 2", evlist->core.nr_= entries % 2, 0); + + evlist__for_each_entry(evlist, evsel) { + struct evsel *next; + + if (!evsel__is_group_leader(evsel)) + continue; + + next =3D evsel__next(evsel); + TEST_ASSERT_EQUAL("Group size is 2", evsel->core.nr_members, 2); + TEST_ASSERT_VAL("PMU match", evsel->pmu =3D=3D next->pmu); + TEST_ASSERT_VAL("First event name", strstr(evsel__name(evsel), m.event1)= !=3D NULL); + TEST_ASSERT_VAL("Second event name", strstr(evsel__name(next), m.event2)= !=3D NULL); + } + ret =3D TEST_OK; + +out_err: + evlist__delete(evlist); + parse_events_error__exit(&err); + free(pmu_prefix); + free(m.event1); + free(m.event2); + return ret; +} + +DEFINE_SUITE("Uncore event sorting", uncore_event_sorting); --=20 2.53.0.1118.gaef5881109-goog