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Fri, 26 May 2023 14:55:30 -0700 (PDT) Date: Fri, 26 May 2023 14:54:09 -0700 In-Reply-To: <20230526215410.2435674-1-irogers@google.com> Message-Id: <20230526215410.2435674-35-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 34/35] perf pmus: Remove perf_pmus__has_hybrid 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230526_225532_185538_48758A4D X-CRM114-Status: GOOD ( 24.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org perf_pmus__has_hybrid was used to detect when there was >1 core PMU, this can be achieved with perf_pmus__num_core_pmus that doesn't depend upon is_pmu_hybrid and PMU name comparisons. When modifying the function calls take the opportunity to improve comments, enable/simplify tests that were previously failing for hybrid but now pass and to simplify generic code. Signed-off-by: Ian Rogers Reviewed-by: Kan Liang --- tools/perf/arch/x86/tests/hybrid.c | 2 +- tools/perf/arch/x86/util/evlist.c | 2 +- tools/perf/arch/x86/util/perf_regs.c | 2 +- tools/perf/builtin-record.c | 4 ++-- tools/perf/tests/attr.c | 9 ++++++++- tools/perf/tests/parse-metric.c | 7 ++----- tools/perf/tests/switch-tracking.c | 12 +----------- tools/perf/tests/topology.c | 14 ++------------ tools/perf/util/cputopo.c | 10 ++-------- tools/perf/util/evsel.c | 2 +- tools/perf/util/header.c | 2 +- tools/perf/util/mem-events.c | 18 +++++------------- tools/perf/util/metricgroup.c | 2 +- tools/perf/util/pmus.c | 18 ------------------ tools/perf/util/pmus.h | 1 - tools/perf/util/stat-display.c | 2 +- 16 files changed, 29 insertions(+), 78 deletions(-) diff --git a/tools/perf/arch/x86/tests/hybrid.c b/tools/perf/arch/x86/tests/hybrid.c index e466735d68d5..eb152770f148 100644 --- a/tools/perf/arch/x86/tests/hybrid.c +++ b/tools/perf/arch/x86/tests/hybrid.c @@ -281,7 +281,7 @@ static int test_events(const struct evlist_test *events, int cnt) int test__hybrid(struct test_suite *test __maybe_unused, int subtest __maybe_unused) { - if (!perf_pmus__has_hybrid()) + if (perf_pmus__num_core_pmus() == 1) return TEST_SKIP; return test_events(test__hybrid_events, ARRAY_SIZE(test__hybrid_events)); diff --git a/tools/perf/arch/x86/util/evlist.c b/tools/perf/arch/x86/util/evlist.c index 8a6a0b98b976..cbd582182932 100644 --- a/tools/perf/arch/x86/util/evlist.c +++ b/tools/perf/arch/x86/util/evlist.c @@ -18,7 +18,7 @@ static int ___evlist__add_default_attrs(struct evlist *evlist, for (i = 0; i < nr_attrs; i++) event_attr_init(attrs + i); - if (!perf_pmus__has_hybrid()) + if (perf_pmus__num_core_pmus() == 1) return evlist__add_attrs(evlist, attrs, nr_attrs); for (i = 0; i < nr_attrs; i++) { diff --git a/tools/perf/arch/x86/util/perf_regs.c b/tools/perf/arch/x86/util/perf_regs.c index 116384f19baf..8ad4112ad10c 100644 --- a/tools/perf/arch/x86/util/perf_regs.c +++ b/tools/perf/arch/x86/util/perf_regs.c @@ -292,7 +292,7 @@ uint64_t arch__intr_reg_mask(void) */ attr.sample_period = 1; - if (perf_pmus__has_hybrid()) { + if (perf_pmus__num_core_pmus() > 1) { struct perf_pmu *pmu = NULL; __u64 type = PERF_TYPE_RAW; diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 4b9212f75493..aec18db7ff23 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1294,7 +1294,7 @@ static int record__open(struct record *rec) * of waiting or event synthesis. */ if (opts->target.initial_delay || target__has_cpu(&opts->target) || - perf_pmus__has_hybrid()) { + perf_pmus__num_core_pmus() > 1) { pos = evlist__get_tracking_event(evlist); if (!evsel__is_dummy_event(pos)) { /* Set up dummy event. */ @@ -2193,7 +2193,7 @@ static void record__uniquify_name(struct record *rec) char *new_name; int ret; - if (!perf_pmus__has_hybrid()) + if (perf_pmus__num_core_pmus() == 1) return; evlist__for_each_entry(evlist, pos) { diff --git a/tools/perf/tests/attr.c b/tools/perf/tests/attr.c index 674876e6c8e6..61186d0d1cfa 100644 --- a/tools/perf/tests/attr.c +++ b/tools/perf/tests/attr.c @@ -185,8 +185,15 @@ static int test__attr(struct test_suite *test __maybe_unused, int subtest __mayb char path_dir[PATH_MAX]; char *exec_path; - if (perf_pmus__has_hybrid()) + if (perf_pmus__num_core_pmus() > 1) { + /* + * TODO: Attribute tests hard code the PMU type. If there are >1 + * core PMU then each PMU will have a different type whic + * requires additional support. + */ + pr_debug("Skip test on hybrid systems"); return TEST_SKIP; + } /* First try development tree tests. */ if (!lstat("./tests", &st)) diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c index 1d6493a5a956..2c28fb50dc24 100644 --- a/tools/perf/tests/parse-metric.c +++ b/tools/perf/tests/parse-metric.c @@ -302,11 +302,8 @@ static int test__parse_metric(struct test_suite *test __maybe_unused, int subtes TEST_ASSERT_VAL("DCache_L2 failed", test_dcache_l2() == 0); TEST_ASSERT_VAL("recursion fail failed", test_recursion_fail() == 0); TEST_ASSERT_VAL("Memory bandwidth", test_memory_bandwidth() == 0); - - if (!perf_pmus__has_hybrid()) { - TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0); - TEST_ASSERT_VAL("test metric group", test_metric_group() == 0); - } + TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0); + TEST_ASSERT_VAL("test metric group", test_metric_group() == 0); return 0; } diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c index cff6ab87b2f6..e52b031bedc5 100644 --- a/tools/perf/tests/switch-tracking.c +++ b/tools/perf/tests/switch-tracking.c @@ -375,17 +375,7 @@ static int test__switch_tracking(struct test_suite *test __maybe_unused, int sub cpu_clocks_evsel = evlist__last(evlist); /* Second event */ - if (perf_pmus__has_hybrid()) { - cycles = "cpu_core/cycles/u"; - err = parse_event(evlist, cycles); - if (err) { - cycles = "cpu_atom/cycles/u"; - pr_debug("Trying %s\n", cycles); - err = parse_event(evlist, cycles); - } - } else { - err = parse_event(evlist, cycles); - } + err = parse_event(evlist, cycles); if (err) { pr_debug("Failed to parse event %s\n", cycles); goto out_err; diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c index 49e80d15420b..9dee63734e66 100644 --- a/tools/perf/tests/topology.c +++ b/tools/perf/tests/topology.c @@ -41,18 +41,8 @@ static int session_write_header(char *path) session = perf_session__new(&data, NULL); TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); - if (!perf_pmus__has_hybrid()) { - session->evlist = evlist__new_default(); - TEST_ASSERT_VAL("can't get evlist", session->evlist); - } else { - struct parse_events_error err; - - session->evlist = evlist__new(); - TEST_ASSERT_VAL("can't get evlist", session->evlist); - parse_events_error__init(&err); - parse_events(session->evlist, "cpu_core/cycles/", &err); - parse_events_error__exit(&err); - } + session->evlist = evlist__new_default(); + TEST_ASSERT_VAL("can't get evlist", session->evlist); perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); perf_header__set_feat(&session->header, HEADER_NRCPUS); diff --git a/tools/perf/util/cputopo.c b/tools/perf/util/cputopo.c index 729142ec9a9a..81cfc85f4668 100644 --- a/tools/perf/util/cputopo.c +++ b/tools/perf/util/cputopo.c @@ -472,15 +472,9 @@ struct hybrid_topology *hybrid_topology__new(void) { struct perf_pmu *pmu = NULL; struct hybrid_topology *tp = NULL; - u32 nr = 0, i = 0; + int nr = perf_pmus__num_core_pmus(), i = 0; - if (!perf_pmus__has_hybrid()) - return NULL; - - while ((pmu = perf_pmus__scan_core(pmu)) != NULL) - nr++; - - if (nr == 0) + if (nr <= 1) return NULL; tp = zalloc(sizeof(*tp) + sizeof(tp->nodes[0]) * nr); diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index b4237fc713d5..ec2ce39d66d8 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -3140,7 +3140,7 @@ void evsel__zero_per_pkg(struct evsel *evsel) */ bool evsel__is_hybrid(const struct evsel *evsel) { - if (!perf_pmus__has_hybrid()) + if (perf_pmus__num_core_pmus() == 1) return false; return evsel->core.is_pmu_core; diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index c701cc474d79..8682784cbec1 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -1589,7 +1589,7 @@ static int write_pmu_caps(struct feat_fd *ff, * Write hybrid pmu caps first to maintain compatibility with * older perf tool. */ - if (perf_pmus__has_hybrid()) { + if (perf_pmus__num_core_pmus() > 1) { pmu = NULL; while ((pmu = perf_pmus__scan_core(pmu))) { ret = __write_pmu_caps(ff, pmu, true); diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c index c5596230a308..be15aadb6b14 100644 --- a/tools/perf/util/mem-events.c +++ b/tools/perf/util/mem-events.c @@ -121,6 +121,7 @@ int perf_mem_events__init(void) for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) { struct perf_mem_event *e = perf_mem_events__ptr(j); char sysfs_name[100]; + struct perf_pmu *pmu = NULL; /* * If the event entry isn't valid, skip initialization @@ -129,18 +130,9 @@ int perf_mem_events__init(void) if (!e->tag) continue; - if (!perf_pmus__has_hybrid()) { - scnprintf(sysfs_name, sizeof(sysfs_name), - e->sysfs_name, "cpu"); - e->supported = perf_mem_event__supported(mnt, sysfs_name); - } else { - struct perf_pmu *pmu = NULL; - - while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { - scnprintf(sysfs_name, sizeof(sysfs_name), - e->sysfs_name, pmu->name); - e->supported |= perf_mem_event__supported(mnt, sysfs_name); - } + while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + scnprintf(sysfs_name, sizeof(sysfs_name), e->sysfs_name, pmu->name); + e->supported |= perf_mem_event__supported(mnt, sysfs_name); } if (e->supported) @@ -196,7 +188,7 @@ int perf_mem_events__record_args(const char **rec_argv, int *argv_nr, if (!e->record) continue; - if (!perf_pmus__has_hybrid()) { + if (perf_pmus__num_core_pmus() == 1) { if (!e->supported) { pr_err("failed: event '%s' not supported\n", perf_mem_events__name(j, NULL)); diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 092ed6386a39..70ef2e23a710 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -274,7 +274,7 @@ static int setup_metric_events(const char *pmu, struct hashmap *ids, const char *metric_id; struct evsel *ev; size_t ids_size, matched_events, i; - bool all_pmus = !strcmp(pmu, "all") || !perf_pmus__has_hybrid() || !is_pmu_hybrid(pmu); + bool all_pmus = !strcmp(pmu, "all") || perf_pmus__num_core_pmus() == 1 || !is_pmu_core(pmu); *out_metric_events = NULL; ids_size = hashmap__size(ids); diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c index bf927aed162e..53f11f6ce878 100644 --- a/tools/perf/util/pmus.c +++ b/tools/perf/util/pmus.c @@ -464,24 +464,6 @@ bool perf_pmus__have_event(const char *pname, const char *name) return pmu && perf_pmu__have_event(pmu, name); } -bool perf_pmus__has_hybrid(void) -{ - static bool hybrid_scanned, has_hybrid; - - if (!hybrid_scanned) { - struct perf_pmu *pmu = NULL; - - while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { - if (is_pmu_hybrid(pmu->name)) { - has_hybrid = true; - break; - } - } - hybrid_scanned = true; - } - return has_hybrid; -} - int perf_pmus__num_core_pmus(void) { static int count; diff --git a/tools/perf/util/pmus.h b/tools/perf/util/pmus.h index 27400a027d41..1e710720aec7 100644 --- a/tools/perf/util/pmus.h +++ b/tools/perf/util/pmus.h @@ -18,7 +18,6 @@ const struct perf_pmu *perf_pmus__pmu_for_pmu_filter(const char *str); int perf_pmus__num_mem_pmus(void); void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *print_state); bool perf_pmus__have_event(const char *pname, const char *name); -bool perf_pmus__has_hybrid(void); int perf_pmus__num_core_pmus(void); #endif /* __PMUS_H */ diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index 9355ddf7bca9..c1765c878e03 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -681,7 +681,7 @@ static bool evlist__has_hybrid(struct evlist *evlist) { struct evsel *evsel; - if (!perf_pmus__has_hybrid()) + if (perf_pmus__num_core_pmus() == 1) return false; evlist__for_each_entry(evlist, evsel) {