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AJvYcCWO5bbDZoqKaHHfF6zbKgt6H8ILhXxW4+A3SArfZzvJCUJrvftX3YLiH6nSSg50nlMmRggEG+GFQpahjHzo3agz@lists.infradead.org X-Gm-Message-State: AOJu0YxRSTlJHXhKuXhwWati85nlERalaNENVI9EYxaFoB4Wb8MUHH4f FFLSTizhQQ7AQRXIvpYZEbUJUWr6Zv6fir3a1zgSKLbCBkFt//XIhYfXOAY6epY= X-Google-Smtp-Source: AGHT+IG+DAUJo2pn2BJB0TGl+/A9x8WGEWnV2tuFf/gEyli81cL41CJgfK4r+z5lVCT/xKvYFOGJRQ== X-Received: by 2002:a05:6512:ace:b0:52c:76ac:329b with SMTP id 2adb3069b0e04-53877538b62mr6848029e87.35.1727362217510; Thu, 26 Sep 2024 07:50:17 -0700 (PDT) Received: from localhost.localdomain ([89.47.253.130]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a93c294833asm5589966b.98.2024.09.26.07.50.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Sep 2024 07:50:17 -0700 (PDT) From: James Clark To: irogers@google.com, linux-perf-users@vger.kernel.org, kan.liang@linux.intel.com, ak@linux.intel.com, namhyung@kernel.org Cc: James Clark , John Garry , Will Deacon , Mike Leach , Leo Yan , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Adrian Hunter , Weilin Wang , Athira Rajeev , Dominique Martinet , Yang Jihong , Yang Li , Howard Chu , Ze Gao , Jing Zhang , Sun Haiyong , Yicong Yang , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v9 5/7] perf evsel: Remove pmu_name Date: Thu, 26 Sep 2024 15:48:36 +0100 Message-Id: <20240926144851.245903-6-james.clark@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240926144851.245903-1-james.clark@linaro.org> References: <20240926144851.245903-1-james.clark@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240926_075019_622124_04A57371 X-CRM114-Status: GOOD ( 24.27 ) 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 From: Ian Rogers "evsel->pmu_name" is only ever assigned a strdup of "pmu->name", a strdup of "evsel->pmu_name" or NULL. As such, prefer to use "pmu->name" directly and even to directly compare PMUs than PMU names. For safety, add some additional NULL tests. Acked-by: Namhyung Kim Signed-off-by: Ian Rogers [ Fix arm-spe.c usage of pmu_name and empty PMU name ] Acked-by: Kan Liang Signed-off-by: James Clark --- tools/perf/arch/arm64/util/arm-spe.c | 4 ++-- tools/perf/arch/x86/util/evsel.c | 4 ++-- tools/perf/tests/parse-events.c | 2 +- tools/perf/util/evlist.c | 3 ++- tools/perf/util/evsel.c | 7 ------- tools/perf/util/evsel.h | 3 +-- tools/perf/util/metricgroup.c | 4 ++-- tools/perf/util/parse-events.c | 1 - tools/perf/util/stat-shadow.c | 10 +++++----- tools/perf/util/stat.c | 2 +- 10 files changed, 16 insertions(+), 24 deletions(-) diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c index 2be99fdf997d..59a85e6f3aa3 100644 --- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -188,9 +188,9 @@ static int arm_spe_recording_options(struct auxtrace_record *itr, evlist__for_each_entry(evlist, evsel) { if (evsel__is_aux_event(evsel)) { - if (!strstarts(evsel->pmu_name, ARM_SPE_PMU_NAME)) { + if (!strstarts(evsel->pmu->name, ARM_SPE_PMU_NAME)) { pr_err("Found unexpected auxtrace event: %s\n", - evsel->pmu_name); + evsel->pmu->name); return -EINVAL; } opts->full_auxtrace = true; diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c index ec2ac3bbb76f..cf7c116eeb8e 100644 --- a/tools/perf/arch/x86/util/evsel.c +++ b/tools/perf/arch/x86/util/evsel.c @@ -84,7 +84,7 @@ int arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size) return scnprintf(bf, size, "%s", event_name); return scnprintf(bf, size, "%s/%s/", - evsel->pmu_name ? evsel->pmu_name : "cpu", + evsel->pmu ? evsel->pmu->name : "cpu", event_name); } @@ -129,7 +129,7 @@ int arch_evsel__open_strerror(struct evsel *evsel, char *msg, size_t size) return 0; if (!evsel->core.attr.precise_ip && - !(evsel->pmu_name && !strncmp(evsel->pmu_name, "ibs", 3))) + !(evsel->pmu && !strncmp(evsel->pmu->name, "ibs", 3))) return 0; /* More verbose IBS errors. */ diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index 9e3086d02150..78e999f03d2d 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -730,7 +730,7 @@ static int test__checkevent_pmu_events(struct evlist *evlist) TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type || - strcmp(evsel->pmu_name, "cpu")); + strcmp(evsel->pmu->name, "cpu")); TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index bace277fa77d..4835d5aa5c48 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -2576,7 +2576,8 @@ void evlist__uniquify_name(struct evlist *evlist) else attributes = empty_attributes; - if (asprintf(&new_name, "%s/%s/%s", pos->pmu_name, pos->name, attributes + 1)) { + if (asprintf(&new_name, "%s/%s/%s", pos->pmu ? pos->pmu->name : "", + pos->name, attributes + 1)) { free(pos->name); pos->name = new_name; } else { diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 00178643b198..56f3c2183437 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -296,7 +296,6 @@ void evsel__init(struct evsel *evsel, evsel->metric_events = NULL; evsel->per_pkg_mask = NULL; evsel->collect_stat = false; - evsel->pmu_name = NULL; evsel->group_pmu_name = NULL; evsel->skippable = false; evsel->alternate_hw_config = PERF_COUNT_HW_MAX; @@ -394,11 +393,6 @@ struct evsel *evsel__clone(struct evsel *orig) if (evsel->group_name == NULL) goto out_err; } - if (orig->pmu_name) { - evsel->pmu_name = strdup(orig->pmu_name); - if (evsel->pmu_name == NULL) - goto out_err; - } if (orig->group_pmu_name) { evsel->group_pmu_name = strdup(orig->group_pmu_name); if (evsel->group_pmu_name == NULL) @@ -1497,7 +1491,6 @@ void evsel__exit(struct evsel *evsel) zfree(&evsel->group_name); zfree(&evsel->name); zfree(&evsel->filter); - zfree(&evsel->pmu_name); zfree(&evsel->group_pmu_name); zfree(&evsel->unit); zfree(&evsel->metric_id); diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index cf6f11fdfd06..3e751ea769ac 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -72,7 +72,6 @@ struct evsel { struct { char *name; char *group_name; - const char *pmu_name; const char *group_pmu_name; #ifdef HAVE_LIBTRACEEVENT struct tep_event *tp_format; @@ -184,7 +183,7 @@ struct evsel { unsigned long open_flags; int precise_ip_original; - /* for missing_features */ + /* The PMU the event is from. Used for missing_features, PMU name, etc. */ struct perf_pmu *pmu; /* For tool events */ diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 4dff3e925a47..9c6fa6b4f628 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -297,8 +297,8 @@ static int setup_metric_events(const char *pmu, struct hashmap *ids, struct expr_id_data *val_ptr; /* Don't match events for the wrong hybrid PMU. */ - if (!all_pmus && ev->pmu_name && evsel__is_hybrid(ev) && - strcmp(ev->pmu_name, pmu)) + if (!all_pmus && ev->pmu && evsel__is_hybrid(ev) && + strcmp(ev->pmu->name, pmu)) continue; /* * Check for duplicate events with the same name. For diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index fcc4dab618be..e96cf13dc396 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -263,7 +263,6 @@ __add_event(struct list_head *list, int *idx, evsel->core.is_pmu_core = pmu ? pmu->is_core : false; evsel->auto_merge_stats = auto_merge_stats; evsel->pmu = pmu; - evsel->pmu_name = pmu ? strdup(pmu->name) : NULL; evsel->alternate_hw_config = alternate_hw_config; if (name) diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index dd709a731574..3ce756b8ede5 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -573,7 +573,7 @@ static void perf_stat__print_metricgroup_header(struct perf_stat_config *config, { bool need_full_name = perf_pmus__num_core_pmus() > 1; static const char *last_name; - static const char *last_pmu; + static const struct perf_pmu *last_pmu; char full_name[64]; /* @@ -584,21 +584,21 @@ static void perf_stat__print_metricgroup_header(struct perf_stat_config *config, * different metric events. */ if (last_name && !strcmp(last_name, name)) { - if (!need_full_name || !strcmp(last_pmu, evsel->pmu_name)) { + if (!need_full_name || last_pmu != evsel->pmu) { out->print_metricgroup_header(config, ctxp, NULL); return; } } - if (need_full_name) - scnprintf(full_name, sizeof(full_name), "%s (%s)", name, evsel->pmu_name); + if (need_full_name && evsel->pmu) + scnprintf(full_name, sizeof(full_name), "%s (%s)", name, evsel->pmu->name); else scnprintf(full_name, sizeof(full_name), "%s", name); out->print_metricgroup_header(config, ctxp, full_name); last_name = name; - last_pmu = evsel->pmu_name; + last_pmu = evsel->pmu; } /** diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c index 0bd5467389e4..7c2ccdcc3fdb 100644 --- a/tools/perf/util/stat.c +++ b/tools/perf/util/stat.c @@ -553,7 +553,7 @@ static bool evsel__is_alias(struct evsel *evsel_a, struct evsel *evsel_b) if (evsel__is_clock(evsel_a) != evsel__is_clock(evsel_b)) return false; - return !!strcmp(evsel_a->pmu_name, evsel_b->pmu_name); + return evsel_a->pmu != evsel_b->pmu; } static void evsel__merge_aliases(struct evsel *evsel)