From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dl1-f73.google.com (mail-dl1-f73.google.com [74.125.82.73]) (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 9C727346770 for ; Mon, 18 May 2026 06:29:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779085755; cv=none; b=ZyoA8pP+fU6+MMceYRjjVyiCDBJqJv5oaZz8pLcC9KKHOHdQKuCUBzW3HdCIqN/29+6mqs3VasLHJ2U3MGYc9RphMZ6C1GiD5uz0HbEpROxjJvcBxEDu736KYZr/NA1pZctQJyVIdFCHurx2J9HEbeb1D/COWh8YJZX+JvWTxiw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779085755; c=relaxed/simple; bh=5AEb8CpNcgxavaj0/Q2pbaNnCmXK3dZvd3aKtjUJhWQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=bzUigj40sk4ccOBbKhIbNs1CjJp6KRKQl/R8oe/F5wV7fgH+OUX4Si3NOjUANJ8mY3GVgiK/TEoNH/352XEJPK7SZGdoeOAWCWOXjB/gFX8gk5WnW8tcwdb0tigWteO6oACCAk4Cl0nU+H70wweITugFo2GHMkxnqS863DXYFmo= 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=JXFEaWTM; arc=none smtp.client-ip=74.125.82.73 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="JXFEaWTM" Received: by mail-dl1-f73.google.com with SMTP id a92af1059eb24-12dba1e866dso1294703c88.1 for ; Sun, 17 May 2026 23:29:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1779085750; x=1779690550; 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=h/Zd7KLf77p5kYlpKwaADZD2UKBsJqwfYby1zpdvu0s=; b=JXFEaWTMQ7ojMRucRCW11q2SlKvv6oi/AiAjPfTtohWhJCwp1eKB86149ZA/pcvJpP v5fIMDwiUP0Tav9NL1hqQwtNysnnsur813ZXLpbcSeZ4j5BJnijYdO1mPOn8bO6+8ddN ilPnofXSOljUxtb5Ib4aJqtljJ7gRQsXAkFBzWfozPDmH371dMM9DtB9isxPI+s06irr FG/YwxvP2afRhZYZS7ZPn6Vc+1kbJULOdDPZ3Z7RLITgcN7LmfaTpXib+eJ0u8D1HJN6 xZpQWx9TbhwGTsCVfjNOlF3UG7eN7ZmIlxAbXalQUcHBrUROg8//VNUqChGdI/NKowqP hW5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779085750; x=1779690550; 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=h/Zd7KLf77p5kYlpKwaADZD2UKBsJqwfYby1zpdvu0s=; b=TPRlCCagDGgjHpLsi6eZ8FYayTxWs9QfOhAOby8fZKWOIw4lxe1l9x8P2yEnL32erl G+09nECCvzTTJ6Y3e/9DT9lWlvnRfp8YjnK2PDj/KLaXl0gbym6LyK54o9AbYAf6H8qi 2iVgf1Rt/ZLenx5DmXyX9fA7SDVrlNdORUxW7CjDVKQlZFnspWgJ48O8c/b1p78pl73c ruUaXkgMDkxBtHoLGDs3f8TmIGQwpohT3nNewuiQey2DhfZAcO2rChhgXgGBTp7XlCc6 wynq4fVCl9KeS6q2KOZiCGjhb8vMDBHASrUnenQIBHdsotLlOgrxdk4DmujHycnHVPc4 Yh4Q== X-Forwarded-Encrypted: i=1; AFNElJ/s3ovZ/RSAe3Jv12d1MP639IWSo6pcWepoqQIyoDA8CkqIL0cygPMAOW97EvnHYtlHDhohT+McBIB8pG0=@vger.kernel.org X-Gm-Message-State: AOJu0Yyx+BdoO8A4qzAAH7+8pM7f121trc1MjulXnM0ZX2L//aQmktnY t6bGArUTsFBLk/iStYcochXX8bRpeXcFumsqLOmKIdcFocnwMJVXaEBd5rvEOC4ZN42FfQznJp2 8+BcNb/NQmw== X-Received: from dlbbu10.prod.google.com ([2002:a05:7022:220a:b0:12c:1ff3:9fa4]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:427:b0:135:2588:6314 with SMTP id a92af1059eb24-135258863a8mr4112384c88.8.1779085750028; Sun, 17 May 2026 23:29:10 -0700 (PDT) Date: Sun, 17 May 2026 23:29:03 -0700 In-Reply-To: <20260518062904.2591616-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260518043140.2522141-1-irogers@google.com> <20260518062904.2591616-1-irogers@google.com> X-Mailer: git-send-email 2.54.0.563.g4f69b47b94-goog Message-ID: <20260518062904.2591616-2-irogers@google.com> Subject: [PATCH v8 1/2] perf tests: Add test for uncore 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 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 | 176 ++++++++++++++++++++++++ 4 files changed, 179 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 += builtin-test.o perf-test-y += tests-scripts.o perf-test-y += parse-events.o +perf-test-y += uncore-event-sorting.o perf-test-y += dso-data.o perf-test-y += vmlinux-kallsyms.o perf-test-y += openat-syscall.o diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.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[] = { &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); diff --git a/tools/perf/tests/uncore-event-sorting.c b/tools/perf/tests/uncore-event-sorting.c new file mode 100644 index 000000000000..7d2fc304e21f --- /dev/null +++ b/tools/perf/tests/uncore-event-sorting.c @@ -0,0 +1,176 @@ +// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) +#include + +#include "debug.h" +#include "evlist.h" +#include "parse-events.h" +#include "pmu.h" +#include "pmus.h" +#include "tests.h" + +struct match_state { + char *event1; + char *event2; +}; + +static char *clean_event_name(struct pmu_event_info *info) +{ + const char *name = info->name; + const char *pmu_name = info->pmu->name; + size_t pmu_len = strlen(pmu_name); + char *res; + size_t len; + + if (!strncmp(name, pmu_name, pmu_len) && name[pmu_len] == '/') + name += pmu_len + 1; + + res = strdup(name); + if (!res) + return NULL; + + len = strlen(res); + if (len > 0 && res[len - 1] == '/') + res[len - 1] = '\0'; + + return res; +} + +static int event_cb(void *state, struct pmu_event_info *info) +{ + struct match_state *m = state; + char *clean_name; + + if (m->event1 && m->event2) + return 1; + + clean_name = clean_event_name(info); + if (!clean_name) + return 0; + + if (!m->event1) { + m->event1 = clean_name; + } else { + if (strcmp(m->event1, clean_name)) { + m->event2 = clean_name; + return 1; + } + free(clean_name); + } + return 0; +} + +#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__uncore_event_sorting(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + struct evlist *evlist = NULL; + struct parse_events_error err; + struct evsel *evsel; + struct perf_pmu *pmu = NULL; + char *pmu_prefix = NULL; + struct match_state m = { NULL, NULL }; + char buf[1024]; + int ret; + + parse_events_error__init(&err); + + while ((pmu = perf_pmus__scan(pmu)) != NULL) { + size_t len; + struct perf_pmu *sibling; + + if (pmu->is_core) + continue; + + len = pmu_name_len_no_suffix(pmu->name); + if (len == strlen(pmu->name)) + continue; + + sibling = pmu; + while ((sibling = perf_pmus__scan(sibling)) != NULL) { + if (sibling->is_core) + continue; + if (pmu_name_len_no_suffix(sibling->name) == len && + !strncmp(pmu->name, sibling->name, len)) + break; + } + + if (!sibling) + continue; + + m.event1 = m.event2 = NULL; + perf_pmu__for_each_event(pmu, false, &m, event_cb); + + if (m.event1 && m.event2) { + pmu_prefix = strndup(pmu->name, len); + break; + } + zfree(&m.event1); + } + + if (!pmu_prefix) { + pr_debug("No suitable uncore PMU found\n"); + ret = TEST_SKIP; + goto out_err; + } + + evlist = evlist__new(); + if (!evlist) { + ret = TEST_FAIL; + goto out_err; + } + + snprintf(buf, sizeof(buf), "{%s/%s/,%s/%s/}", pmu_prefix, m.event1, pmu_prefix, m.event2); + pr_debug("Parsing: %s\n", buf); + + ret = parse_events(evlist, buf, &err); + if (ret) { + pr_debug("parse_events failed\n"); + ret = TEST_FAIL; + goto out_err; + } + + CHECK_COND(evlist->core.nr_entries >= 4, "Number of events is >= 4"); + CHECK_EQUAL(evlist->core.nr_entries % 2, 0, "Number of events is a multiple of 2"); + + evlist__for_each_entry(evlist, evsel) { + struct evsel *next; + + if (!evsel__is_group_leader(evsel)) + continue; + + next = evsel__next(evsel); + CHECK_EQUAL(evsel->core.nr_members, 2, "Group size is 2"); + CHECK_COND(evsel->pmu == next->pmu, "PMU match"); + CHECK_COND(strstr(evsel__name(evsel), m.event1) != NULL, "First event name"); + CHECK_COND(strstr(evsel__name(next), m.event2) != NULL, "Second event name"); + } + ret = TEST_OK; + +out_err: + evlist__delete(evlist); + parse_events_error__exit(&err); + zfree(&pmu_prefix); + zfree(&m.event1); + zfree(&m.event2); + return ret; +} + +DEFINE_SUITE("Uncore event sorting", uncore_event_sorting); -- 2.54.0.563.g4f69b47b94-goog