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AJvYcCVVt2M5AvAB4n5FLstLbmESg2ftQ741+PURxROchY89VAIQxY1HKZUyyBTocFh0P4SmEkET29Q7/P6yU2s=@vger.kernel.org X-Gm-Message-State: AOJu0Yw6Gv1Ikfu9mCnSl+6DPCZWM1iIsaIpQIs0QcVLgnj7/fVXBKes LlwkbeOn6/BaaDNAo9y52rUeGrgZeHK/orrcQc4FUbOxz2Fm1t0VLfJ5T5+dglA= X-Google-Smtp-Source: AGHT+IG0pGKyFxhUYIZxyizCprVXeOYwV9O/Cu8dGummQjlPHaKWHg/LIgIEa0ORW9lyqscxBKa+0Q== X-Received: by 2002:a05:600c:4f42:b0:427:d713:a5d3 with SMTP id 5b1f17b1804b1-42bb02eb478mr125076105e9.11.1725358840072; Tue, 03 Sep 2024 03:20:40 -0700 (PDT) Received: from localhost.localdomain ([89.47.253.130]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42bb6e274ccsm168739995e9.37.2024.09.03.03.20.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Sep 2024 03:20:39 -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 , Colin Ian King , Yang Jihong , Howard Chu , Ze Gao , Yunseong Kim , Sun Haiyong , Jing Zhang , Yicong Yang , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 1/7] perf evsel: Add alternate_hw_config and use in evsel__match Date: Tue, 3 Sep 2024 11:19:45 +0100 Message-Id: <20240903102005.78049-2-james.clark@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240903102005.78049-1-james.clark@linaro.org> References: <20240903102005.78049-1-james.clark@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Ian Rogers There are cases where we want to match events like instructions and cycles with legacy hardware values, in particular in stat-shadow's hard coded metrics. An evsel's name isn't a good point of reference as it gets altered, strstr would be too imprecise and re-parsing the event from its name is silly. Instead, hold the legacy hardware event name, determined during parsing, in the evsel for this matching case. Inline evsel__match2 that is only used in builtin-diff. Signed-off-by: Ian Rogers Signed-off-by: James Clark --- tools/perf/builtin-diff.c | 6 ++-- tools/perf/util/evsel.c | 21 +++++++++++++ tools/perf/util/evsel.h | 19 ++---------- tools/perf/util/parse-events.c | 57 +++++++++++++++++++++------------- tools/perf/util/parse-events.h | 8 ++++- tools/perf/util/parse-events.y | 2 +- tools/perf/util/pmu.c | 6 +++- tools/perf/util/pmu.h | 2 +- 8 files changed, 76 insertions(+), 45 deletions(-) diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 23326dd20333..82fb7773e03e 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -469,13 +469,13 @@ static int diff__process_sample_event(const struct pe= rf_tool *tool, =20 static struct perf_diff pdiff; =20 -static struct evsel *evsel_match(struct evsel *evsel, - struct evlist *evlist) +static struct evsel *evsel_match(struct evsel *evsel, struct evlist *evlis= t) { struct evsel *e; =20 evlist__for_each_entry(evlist, e) { - if (evsel__match2(evsel, e)) + if ((evsel->core.attr.type =3D=3D e->core.attr.type) && + (evsel->core.attr.config =3D=3D e->core.attr.config)) return e; } =20 diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 49cc71511c0c..2928c1f76dad 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -299,6 +299,7 @@ void evsel__init(struct evsel *evsel, evsel->pmu_name =3D NULL; evsel->group_pmu_name =3D NULL; evsel->skippable =3D false; + evsel->alternate_hw_config =3D PERF_COUNT_HW_MAX; } =20 struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx) @@ -445,6 +446,8 @@ struct evsel *evsel__clone(struct evsel *orig) if (evsel__copy_config_terms(evsel, orig) < 0) goto out_err; =20 + evsel->alternate_hw_config =3D orig->alternate_hw_config; + return evsel; =20 out_err: @@ -1845,6 +1848,24 @@ static int evsel__read_tool(struct evsel *evsel, int= cpu_map_idx, int thread) return 0; } =20 +bool __evsel__match(const struct evsel *evsel, u32 type, u64 config) +{ + + u32 e_type =3D evsel->core.attr.type; + u64 e_config =3D evsel->core.attr.config; + + if (e_type !=3D type) { + return type =3D=3D PERF_TYPE_HARDWARE && evsel->pmu && evsel->pmu->is_co= re && + evsel->alternate_hw_config =3D=3D config; + } + + if ((type =3D=3D PERF_TYPE_HARDWARE || type =3D=3D PERF_TYPE_HW_CACHE) && + perf_pmus__supports_extended_type()) + e_config &=3D PERF_HW_EVENT_MASK; + + return e_config =3D=3D config; +} + int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread) { if (evsel__is_tool(evsel)) diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 15acf293e12a..430441fdfbbc 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -102,6 +102,7 @@ struct evsel { int bpf_fd; struct bpf_object *bpf_obj; struct list_head config_terms; + u64 alternate_hw_config; }; =20 /* @@ -388,26 +389,10 @@ u64 format_field__intval(struct tep_format_field *fie= ld, struct perf_sample *sam struct tep_format_field *evsel__field(struct evsel *evsel, const char *nam= e); struct tep_format_field *evsel__common_field(struct evsel *evsel, const ch= ar *name); =20 -static inline bool __evsel__match(const struct evsel *evsel, u32 type, u64= config) -{ - if (evsel->core.attr.type !=3D type) - return false; - - if ((type =3D=3D PERF_TYPE_HARDWARE || type =3D=3D PERF_TYPE_HW_CACHE) && - perf_pmus__supports_extended_type()) - return (evsel->core.attr.config & PERF_HW_EVENT_MASK) =3D=3D config; - - return evsel->core.attr.config =3D=3D config; -} +bool __evsel__match(const struct evsel *evsel, u32 type, u64 config); =20 #define evsel__match(evsel, t, c) __evsel__match(evsel, PERF_TYPE_##t, PER= F_COUNT_##c) =20 -static inline bool evsel__match2(struct evsel *e1, struct evsel *e2) -{ - return (e1->core.attr.type =3D=3D e2->core.attr.type) && - (e1->core.attr.config =3D=3D e2->core.attr.config); -} - int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread); =20 int __evsel__read_on_cpu(struct evsel *evsel, int cpu_map_idx, int thread,= bool scale); diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index fab01ba54e34..d1355e492df3 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -227,7 +227,7 @@ __add_event(struct list_head *list, int *idx, bool init_attr, const char *name, const char *metric_id, struct perf_pmu *pmu, struct list_head *config_terms, bool auto_merge_stats, - const char *cpu_list) + const char *cpu_list, u64 alternate_hw_config) { struct evsel *evsel; struct perf_cpu_map *cpus =3D pmu ? perf_cpu_map__get(pmu->cpus) : @@ -263,6 +263,7 @@ __add_event(struct list_head *list, int *idx, evsel->auto_merge_stats =3D auto_merge_stats; evsel->pmu =3D pmu; evsel->pmu_name =3D pmu ? strdup(pmu->name) : NULL; + evsel->alternate_hw_config =3D alternate_hw_config; =20 if (name) evsel->name =3D strdup(name); @@ -285,16 +286,19 @@ struct evsel *parse_events__add_event(int idx, struct= perf_event_attr *attr, { return __add_event(/*list=3D*/NULL, &idx, attr, /*init_attr=3D*/false, na= me, metric_id, pmu, /*config_terms=3D*/NULL, - /*auto_merge_stats=3D*/false, /*cpu_list=3D*/NULL); + /*auto_merge_stats=3D*/false, /*cpu_list=3D*/NULL, + /*alternate_hw_config=3D*/PERF_COUNT_HW_MAX); } =20 static int add_event(struct list_head *list, int *idx, struct perf_event_attr *attr, const char *name, - const char *metric_id, struct list_head *config_terms) + const char *metric_id, struct list_head *config_terms, + u64 alternate_hw_config) { return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, /*pmu=3D*/NULL, config_terms, - /*auto_merge_stats=3D*/false, /*cpu_list=3D*/NULL) ? 0 : -ENOMEM; + /*auto_merge_stats=3D*/false, /*cpu_list=3D*/NULL, + alternate_hw_config) ? 0 : -ENOMEM; } =20 static int add_event_tool(struct list_head *list, int *idx, @@ -314,7 +318,9 @@ static int add_event_tool(struct list_head *list, int *= idx, evsel =3D __add_event(list, idx, &attr, /*init_attr=3D*/true, /*name=3D*/= NULL, /*metric_id=3D*/NULL, /*pmu=3D*/NULL, /*config_terms=3D*/NULL, /*auto_merge_stats=3D*/false, - cpu_list); + cpu_list, + /*alternate_hw_config=3D*/PERF_COUNT_HW_MAX); + if (!evsel) return -ENOMEM; evsel->tool_event =3D tool_event; @@ -448,7 +454,7 @@ bool parse_events__filter_pmu(const struct parse_events= _state *parse_state, static int parse_events_add_pmu(struct parse_events_state *parse_state, struct list_head *list, struct perf_pmu *pmu, const struct parse_events_terms *const_parsed_terms, - bool auto_merge_stats); + bool auto_merge_stats, u64 alternate_hw_config); =20 int parse_events_add_cache(struct list_head *list, int *idx, const char *n= ame, struct parse_events_state *parse_state, @@ -474,7 +480,8 @@ int parse_events_add_cache(struct list_head *list, int = *idx, const char *name, */ ret =3D parse_events_add_pmu(parse_state, list, pmu, parsed_terms, - perf_pmu__auto_merge_stats(pmu)); + perf_pmu__auto_merge_stats(pmu), + /*alternate_hw_config=3D*/PERF_COUNT_HW_MAX); if (ret) return ret; continue; @@ -505,7 +512,8 @@ int parse_events_add_cache(struct list_head *list, int = *idx, const char *name, =20 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name, metric_id, pmu, &config_terms, /*auto_merge_stats=3D*/false, - /*cpu_list=3D*/NULL) =3D=3D NULL) + /*cpu_list=3D*/NULL, + /*alternate_hw_config=3D*/PERF_COUNT_HW_MAX) =3D=3D NULL) return -ENOMEM; =20 free_config_terms(&config_terms); @@ -750,7 +758,7 @@ int parse_events_add_breakpoint(struct parse_events_sta= te *parse_state, name =3D get_config_name(head_config); =20 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=3D*/NU= LL, - &config_terms); + &config_terms, /*alternate_hw_config=3D*/PERF_COUNT_HW_MAX); } =20 static int check_type_val(struct parse_events_term *term, @@ -1050,6 +1058,7 @@ static int config_term_pmu(struct perf_event_attr *at= tr, if (perf_pmu__have_event(pmu, term->config)) { term->type_term =3D PARSE_EVENTS__TERM_TYPE_USER; term->no_value =3D true; + term->alternate_hw_config =3D true; } else { attr->type =3D PERF_TYPE_HARDWARE; attr->config =3D term->val.num; @@ -1362,8 +1371,9 @@ static int __parse_events_add_numeric(struct parse_ev= ents_state *parse_state, name =3D get_config_name(head_config); metric_id =3D get_config_metric_id(head_config); ret =3D __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, na= me, - metric_id, pmu, &config_terms, /*auto_merge_stats=3D*/false, - /*cpu_list=3D*/NULL) ? 0 : -ENOMEM; + metric_id, pmu, &config_terms, /*auto_merge_stats=3D*/false, + /*cpu_list=3D*/NULL, /*alternate_hw_config=3D*/PERF_COUNT_HW_MAX + ) =3D=3D NULL ? -ENOMEM : 0; free_config_terms(&config_terms); return ret; } @@ -1421,7 +1431,7 @@ static bool config_term_percore(struct list_head *con= fig_terms) static int parse_events_add_pmu(struct parse_events_state *parse_state, struct list_head *list, struct perf_pmu *pmu, const struct parse_events_terms *const_parsed_terms, - bool auto_merge_stats) + bool auto_merge_stats, u64 alternate_hw_config) { struct perf_event_attr attr; struct perf_pmu_info info; @@ -1458,7 +1468,7 @@ static int parse_events_add_pmu(struct parse_events_s= tate *parse_state, /*init_attr=3D*/true, /*name=3D*/NULL, /*metric_id=3D*/NULL, pmu, /*config_terms=3D*/NULL, auto_merge_stats, - /*cpu_list=3D*/NULL); + /*cpu_list=3D*/NULL, alternate_hw_config); return evsel ? 0 : -ENOMEM; } =20 @@ -1479,7 +1489,8 @@ static int parse_events_add_pmu(struct parse_events_s= tate *parse_state, =20 /* Look for event names in the terms and rewrite into format based terms.= */ if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, &parsed_terms, - &info, &alias_rewrote_terms, err)) { + &info, &alias_rewrote_terms, + &alternate_hw_config, err)) { parse_events_terms__exit(&parsed_terms); return -EINVAL; } @@ -1525,7 +1536,8 @@ static int parse_events_add_pmu(struct parse_events_s= tate *parse_state, evsel =3D __add_event(list, &parse_state->idx, &attr, /*init_attr=3D*/tru= e, get_config_name(&parsed_terms), get_config_metric_id(&parsed_terms), pmu, - &config_terms, auto_merge_stats, /*cpu_list=3D*/NULL); + &config_terms, auto_merge_stats, /*cpu_list=3D*/NULL, + alternate_hw_config); if (!evsel) { parse_events_terms__exit(&parsed_terms); return -ENOMEM; @@ -1551,7 +1563,7 @@ static int parse_events_add_pmu(struct parse_events_s= tate *parse_state, } =20 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, - const char *event_name, + const char *event_name, u64 hw_config, const struct parse_events_terms *const_parsed_terms, struct list_head **listp, void *loc_) { @@ -1604,7 +1616,7 @@ int parse_events_multi_pmu_add(struct parse_events_st= ate *parse_state, =20 auto_merge_stats =3D perf_pmu__auto_merge_stats(pmu); if (!parse_events_add_pmu(parse_state, list, pmu, - &parsed_terms, auto_merge_stats)) { + &parsed_terms, auto_merge_stats, hw_config)) { struct strbuf sb; =20 strbuf_init(&sb, /*hint=3D*/ 0); @@ -1617,7 +1629,7 @@ int parse_events_multi_pmu_add(struct parse_events_st= ate *parse_state, =20 if (parse_state->fake_pmu) { if (!parse_events_add_pmu(parse_state, list, parse_state->fake_pmu, &par= sed_terms, - /*auto_merge_stats=3D*/true)) { + /*auto_merge_stats=3D*/true, hw_config)) { struct strbuf sb; =20 strbuf_init(&sb, /*hint=3D*/ 0); @@ -1658,7 +1670,8 @@ int parse_events_multi_pmu_add_or_add_pmu(struct pars= e_events_state *parse_state /* Attempt to add to list assuming event_or_pmu is a PMU name. */ pmu =3D parse_state->fake_pmu ?: perf_pmus__find(event_or_pmu); if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_t= erms, - /*auto_merge_stats=3D*/false)) + /*auto_merge_stats=3D*/false, + /*alternate_hw_config=3D*/PERF_COUNT_HW_MAX)) return 0; =20 pmu =3D NULL; @@ -1670,7 +1683,8 @@ int parse_events_multi_pmu_add_or_add_pmu(struct pars= e_events_state *parse_state =20 if (!parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms, - auto_merge_stats)) { + auto_merge_stats, + /*alternate_hw_config=3D*/PERF_COUNT_HW_MAX)) { ok++; parse_state->wild_card_pmus =3D true; } @@ -1681,7 +1695,8 @@ int parse_events_multi_pmu_add_or_add_pmu(struct pars= e_events_state *parse_state =20 /* Failure to add, assume event_or_pmu is an event name. */ zfree(listp); - if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, const_parsed_t= erms, listp, loc)) + if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, PERF_COUNT_HW_= MAX, + const_parsed_terms, listp, loc)) return 0; =20 if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event= _or_pmu) < 0) diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index b735cd9e0acf..703cb6d9f970 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -127,6 +127,12 @@ struct parse_events_term { * value is assumed to be 1. An event name also has no value. */ bool no_value; + /** + * @alternate_hw_config: config is the event name but num is an + * alternate PERF_TYPE_HARDWARE config value which is often nice for the + * sake of quick matching. + */ + bool alternate_hw_config; }; =20 struct parse_events_error { @@ -238,7 +244,7 @@ struct evsel *parse_events__add_event(int idx, struct p= erf_event_attr *attr, struct perf_pmu *pmu); =20 int parse_events_multi_pmu_add(struct parse_events_state *parse_state, - const char *event_name, + const char *event_name, u64 hw_config, const struct parse_events_terms *const_parsed_terms, struct list_head **listp, void *loc); =20 diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index b3c51f06cbdc..dcf47fabdfdd 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -292,7 +292,7 @@ PE_NAME sep_dc struct list_head *list; int err; =20 - err =3D parse_events_multi_pmu_add(_parse_state, $1, NULL, &list, &@1); + err =3D parse_events_multi_pmu_add(_parse_state, $1, PERF_COUNT_HW_MAX, N= ULL, &list, &@1); if (err < 0) { struct parse_events_state *parse_state =3D _parse_state; struct parse_events_error *error =3D parse_state->error; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 0b38c51bd6eb..6f3ca69b71f1 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1602,7 +1602,7 @@ static int check_info_data(struct perf_pmu *pmu, */ int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms = *head_terms, struct perf_pmu_info *info, bool *rewrote_terms, - struct parse_events_error *err) + u64 *alternate_hw_config, struct parse_events_error *err) { struct parse_events_term *term, *h; struct perf_pmu_alias *alias; @@ -1630,6 +1630,7 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struc= t parse_events_terms *head_ NULL); return ret; } + *rewrote_terms =3D true; ret =3D check_info_data(pmu, alias, info, err, term->err_term); if (ret) @@ -1638,6 +1639,9 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struc= t parse_events_terms *head_ if (alias->per_pkg) info->per_pkg =3D true; =20 + if (term->alternate_hw_config) + *alternate_hw_config =3D term->val.num; + list_del_init(&term->list); parse_events_term__delete(term); } diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index b2d3fd291f02..b5f65b705a1e 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -213,7 +213,7 @@ __u64 perf_pmu__format_bits(struct perf_pmu *pmu, const= char *name); int perf_pmu__format_type(struct perf_pmu *pmu, const char *name); int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms = *head_terms, struct perf_pmu_info *info, bool *rewrote_terms, - struct parse_events_error *err); + u64 *alternate_hw_config, struct parse_events_error *err); int perf_pmu__find_event(struct perf_pmu *pmu, const char *event, void *st= ate, pmu_event_callback cb); =20 void perf_pmu_format__set_value(void *format, int config, unsigned long *b= its); --=20 2.34.1