From mboxrd@z Thu Jan 1 00:00:00 1970 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 66A2F37A488 for ; Mon, 18 May 2026 02:32:34 +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=1779071556; cv=none; b=iQb8A8S/52uAUN2So5T6BpBN28Md12/Ze15CDMua4vBbfoS922GCAnVCRoRZyWHuVCRoVKgEEZrOmS1KT1BrLMWFIbrR1gcjJf5T2bBzL4o+LrrNhulLYXV46ReMwFtsWuwSgyPS+95Zi2TKr+jowxCSkoiG/mdL1ACFGUYaLd4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779071556; c=relaxed/simple; bh=eZ4xQVVU1O5AZm2IG6c7jujiI6Gsuu2YQxBkMask9cE=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=tebhYKh5tMx5ZCfdYY6iiYoGW8DDsDNjErxflqhyFdA7z7fu5+ksyOEpA6ufAe229WgGBkRGVRsvQQS4Bw/If9hLRKDjqHq5NrmoPl/4xrBvkZVKLqpYZiK43o26u/1czdOpXc5IWwFuLe3VnM4MW7N0nfmqDGWBPz1lEHd8QDA= 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=fz4Xorux; 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="fz4Xorux" Received: by mail-dy1-f202.google.com with SMTP id 5a478bee46e88-2ee34588671so2006873eec.0 for ; Sun, 17 May 2026 19:32:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1779071553; x=1779676353; 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=K2PfCFgFm9W6LUyGogy0Zkx8RpqhHQD/EGHq4TR1zoI=; b=fz4Xorux7kX4Nhz/KfR+uUn2oUgX+CDQmNP3OfIX6b6lVJya8588PY5/a7IzGSc0mr IeJ7w9xCeeEKFG8mbRkZ37wcnJRvCPl8VN+f9bh/+Wblv16+A3jsQebmX7KCFVvRdXra UgweGdLUYbxHrxo0fJR8HnkGTz8MUU/mIgaGGiZzKal/yJdz7tNBGd1idtv59i4Q40RV IpgP3GVyalTGnmwTbW/FuLAQT+LYgYcyGtGpcF7EMdRfK6He3xIu7CiG0LifShdlie/g ei4fnUOLvwb9jOJF/pBn7VYUb+UdYr5CeRvhcthrqezUhHRT8XmM9H8dudfpcGSnX4a5 +4Gg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779071553; x=1779676353; 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=K2PfCFgFm9W6LUyGogy0Zkx8RpqhHQD/EGHq4TR1zoI=; b=obzCBTv4xHgfiVkT5W3DhjVexAj9k87bermjVSWmUNcJEC4Rlw49La7k7C7Bvwoia7 AWcjGoV2Smqna9lpyW14XuRMUOGzBVfqKrwCKOVueUzalNfkb2La/1dkhfS0iJnc27SJ T+SnfaQ9yxtGFM4+Qar7s584lfWLF07YGQx4EIJY5As/WiNsDdMMqoSmS3vq7EpzyKbD 70v0SqIRxBsgiY7ZE2FJSrEJ5IhtB27deUBlQ1mf4vpm1wgSWJ7u/o5Ei8QACPdDPX// 1jEurLlVpyCzoIDGyvQLhbfiANDDCCYQDtiBSu0wkGA5FjidB3sMJhGeREB/uEH349gH 1RSw== X-Forwarded-Encrypted: i=1; AFNElJ+zx8LZZZussExlzzZnq15LDb+FnjYQqmNKVlhIa6GXVgch5U8h7i5UuEbk7wNBHUaGH2RdHt89W2UG7Rg=@vger.kernel.org X-Gm-Message-State: AOJu0YzBjE9bEri+7DAZm8HVdtMpGY1cPz7jVVZSdYUm4Zw6grHn8oxp SLyqLqWmm5d609l+D8Qz8ubMuAS7fFJ+AoE8Mucn8TcZCdQMqx5S7btKYWSC9BsMzmmY7QN1b33 0Z81npUrrMg== X-Received: from dycol5.prod.google.com ([2002:a05:7301:db85:b0:2f3:d7f7:5ac6]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7301:7c0b:b0:2ef:2878:7ade with SMTP id 5a478bee46e88-303984dd06amr6305545eec.15.1779071553293; Sun, 17 May 2026 19:32:33 -0700 (PDT) Date: Sun, 17 May 2026 19:32:25 -0700 In-Reply-To: <20260518023225.2472122-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260518003704.2434308-1-irogers@google.com> <20260518023225.2472122-1-irogers@google.com> X-Mailer: git-send-email 2.54.0.563.g4f69b47b94-goog Message-ID: <20260518023225.2472122-3-irogers@google.com> Subject: [PATCH v6 2/2] perf arch x86 tests: Add test for topdown event sorting From: Ian Rogers To: irogers@google.com, acme@kernel.org, namhyung@kernel.org Cc: 9erthalion6@gmail.com, 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-Type: text/plain; charset="UTF-8" Add a test to capture the comment in tools/perf/arch/x86/util/evlist.c. Test that slots and topdown-retiring get appropriately sorted with respect to instructions when they're all specified together. When the PMU requires topdown event grouping (indicated by the pressence of the slots event) metric events should be after slots, which should be the group leader. Add a related test that when the slots event isn't given it is injected into the appropriate group. Signed-off-by: Ian Rogers Tested-by: Zide Chen --- tools/perf/arch/x86/tests/topdown.c | 159 +++++++++++++++++++++++++++- 1 file changed, 158 insertions(+), 1 deletion(-) diff --git a/tools/perf/arch/x86/tests/topdown.c b/tools/perf/arch/x86/tests/topdown.c index 3ee4e5e71be3..dbee32bf973e 100644 --- a/tools/perf/arch/x86/tests/topdown.c +++ b/tools/perf/arch/x86/tests/topdown.c @@ -75,4 +75,161 @@ static int test__x86_topdown(struct test_suite *test __maybe_unused, int subtest return ret; } -DEFINE_SUITE("x86 topdown", x86_topdown); +#define CHECK_COND(cond, text) \ +do { \ + if (!(cond)) { \ + pr_debug("FAILED %s:%d %s\n", __FILE__, __LINE__, text); \ + ret = TEST_FAIL; \ + goto out_err; \ + } \ +} while (0) + +#define CHECK_EQUAL(val, expected, text) \ +do { \ + if ((val) != (expected)) { \ + pr_debug("FAILED %s:%d %s (%d != %d)\n", \ + __FILE__, __LINE__, text, (val), (expected)); \ + ret = TEST_FAIL; \ + goto out_err; \ + } \ +} while (0) + +static int test_sort(const char *str, int expected_slots_group_size, + int expected_instructions_group_size) +{ + struct evlist *evlist = NULL; + struct parse_events_error err; + struct evsel *evsel; + int ret = TEST_FAIL; + bool slots_seen = false; + + parse_events_error__init(&err); + + evlist = evlist__new(); + if (!evlist) + goto out_err; + + if (parse_events(evlist, str, &err)) { + pr_debug("parse_events failed for %s\n", str); + goto out_err; + } + + evlist__for_each_entry(evlist, evsel) { + if (!evsel__is_group_leader(evsel)) + continue; + + if (strstr(evsel__name(evsel), "slots")) { + /* + * Slots as a leader means the PMU is for a perf metric + * group as the slots event isn't present when not. + */ + slots_seen = true; + CHECK_EQUAL(evsel->core.nr_members, expected_slots_group_size, + "slots group size"); + if (expected_slots_group_size == 3) { + struct evsel *next = evsel__next(evsel); + struct evsel *next2 = evsel__next(next); + + CHECK_COND(strstr(evsel__name(next), "instructions") != NULL, + "slots second event is instructions"); + CHECK_COND(strstr(evsel__name(next2), "topdown-retiring") != NULL, + "slots third event is topdown-retiring"); + } else if (expected_slots_group_size == 2) { + struct evsel *next = evsel__next(evsel); + + CHECK_COND(strstr(evsel__name(next), "topdown-retiring") != NULL, + "slots second event is topdown-retiring"); + } + } else if (strstr(evsel__name(evsel), "instructions")) { + CHECK_EQUAL(evsel->core.nr_members, expected_instructions_group_size, + "instructions group size"); + if (expected_instructions_group_size == 2) { + /* + * The instructions event leads a group with a + * topdown-retiring event, neither of which need + * reordering for perf metric event support. + */ + struct evsel *next = evsel__next(evsel); + + CHECK_COND(strstr(evsel__name(next), "topdown-retiring") != NULL, + "instructions second event is topdown-retiring"); + } + } else if (strstr(evsel__name(evsel), "topdown-retiring")) { + /* + * A perf metric event where the PMU doesn't require + * slots as a leader. + */ + CHECK_EQUAL(evsel->core.nr_members, 1, "topdown-retiring group size"); + } else if (strstr(evsel__name(evsel), "cycles")) { + CHECK_EQUAL(evsel->core.nr_members, 1, "cycles group size"); + } + } + CHECK_COND(slots_seen, "slots seen"); + ret = TEST_OK; +out_err: + evlist__delete(evlist); + parse_events_error__exit(&err); + return ret; +} + +static int test__x86_topdown_sorting(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + int ret; + + if (!topdown_sys_has_perf_metrics()) + return TEST_OK; + + ret = test_sort("{instructions,topdown-retiring,slots}", 3, 2); + TEST_ASSERT_EQUAL("all events in a group", ret, TEST_OK); + ret = test_sort("instructions,topdown-retiring,slots", 2, 1); + TEST_ASSERT_EQUAL("all events not in a group", ret, TEST_OK); + ret = test_sort("{instructions,slots},topdown-retiring", 2, 1); + TEST_ASSERT_EQUAL("slots event in a group but topdown metrics events outside the group", + ret, TEST_OK); + ret = test_sort("{instructions,slots},{topdown-retiring}", 2, 1); + TEST_ASSERT_EQUAL("slots event and topdown metrics events in two groups", + ret, TEST_OK); + ret = test_sort("{instructions,slots},cycles,topdown-retiring", 2, 1); + TEST_ASSERT_EQUAL("slots event and metrics event are not in a group and not adjacent", + ret, TEST_OK); + + return TEST_OK; +} + +static int test__x86_topdown_slots_injection(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + int ret; + + if (!topdown_sys_has_perf_metrics()) + return TEST_OK; + + ret = test_sort("{instructions,topdown-retiring}", 3, 2); + TEST_ASSERT_EQUAL("all events in a group", ret, TEST_OK); + ret = test_sort("instructions,topdown-retiring", 2, 1); + TEST_ASSERT_EQUAL("all events not in a group", ret, TEST_OK); + ret = test_sort("{instructions},topdown-retiring", 2, 1); + TEST_ASSERT_EQUAL("event in a group but topdown metrics events outside the group", + ret, TEST_OK); + ret = test_sort("{instructions},{topdown-retiring}", 2, 1); + TEST_ASSERT_EQUAL("event and topdown metrics events in two groups", + ret, TEST_OK); + ret = test_sort("{instructions},cycles,topdown-retiring", 2, 1); + TEST_ASSERT_EQUAL("event and metrics event are not in a group and not adjacent", + ret, TEST_OK); + + return TEST_OK; +} + +static struct test_case x86_topdown_tests[] = { + TEST_CASE("topdown events", x86_topdown), + TEST_CASE("topdown sorting", x86_topdown_sorting), + TEST_CASE("topdown slots injection", x86_topdown_slots_injection), + { .name = NULL, } +}; + +struct test_suite suite__x86_topdown = { + .desc = "x86 topdown", + .test_cases = x86_topdown_tests, +}; -- 2.54.0.563.g4f69b47b94-goog