From: Ian Rogers Date: Wed, 23 Aug 2023 08:08:11 +0000 (-0700) Subject: perf pmu: Pass PMU rather than aliases and format X-Git-Tag: v6.6.7~1921^2~53 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=838a8c5f40dd272f0b684cde6bf681c5a4d33c0d;p=platform%2Fkernel%2Flinux-starfive.git perf pmu: Pass PMU rather than aliases and format Pass the pmu so the aliases and format list can be better abstracted and later lazily loaded. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Gaosheng Cui Cc: Ingo Molnar Cc: James Clark Cc: Jing Zhang Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Rob Herring Link: https://lore.kernel.org/r/20230823080828.1460376-9-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c index 64383fc..05d6e6e 100644 --- a/tools/perf/tests/pmu-events.c +++ b/tools/perf/tests/pmu-events.c @@ -496,26 +496,13 @@ static int test__pmu_event_table(struct test_suite *test __maybe_unused, return 0; } -static struct perf_pmu_alias *find_alias(const char *test_event, struct list_head *aliases) -{ - struct perf_pmu_alias *alias; - - list_for_each_entry(alias, aliases, list) - if (!strcmp(test_event, alias->name)) - return alias; - - return NULL; -} - /* Verify aliases are as expected */ static int __test_core_pmu_event_aliases(char *pmu_name, int *count) { struct perf_pmu_test_event const **test_event_table; struct perf_pmu *pmu; - LIST_HEAD(aliases); int res = 0; const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu"); - struct perf_pmu_alias *a, *tmp; if (!table) return -1; @@ -526,14 +513,18 @@ static int __test_core_pmu_event_aliases(char *pmu_name, int *count) if (!pmu) return -1; - pmu->name = pmu_name; + INIT_LIST_HEAD(&pmu->format); + INIT_LIST_HEAD(&pmu->aliases); + INIT_LIST_HEAD(&pmu->caps); + INIT_LIST_HEAD(&pmu->list); + pmu->name = strdup(pmu_name); - pmu_add_cpu_aliases_table(&aliases, pmu, table); + pmu_add_cpu_aliases_table(pmu, table); for (; *test_event_table; test_event_table++) { struct perf_pmu_test_event const *test_event = *test_event_table; struct pmu_event const *event = &test_event->event; - struct perf_pmu_alias *alias = find_alias(event->name, &aliases); + struct perf_pmu_alias *alias = perf_pmu__find_alias(pmu, event->name); if (!alias) { pr_debug("testing aliases core PMU %s: no alias, alias_table->name=%s\n", @@ -551,12 +542,8 @@ static int __test_core_pmu_event_aliases(char *pmu_name, int *count) pr_debug2("testing aliases core PMU %s: matched event %s\n", pmu_name, alias->name); } + perf_pmu__delete(pmu); - list_for_each_entry_safe(a, tmp, &aliases, list) { - list_del(&a->list); - perf_pmu_free_alias(a); - } - free(pmu); return res; } @@ -568,17 +555,16 @@ static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu) const char *pmu_name = pmu->name; struct perf_pmu_alias *a, *tmp, *alias; const struct pmu_events_table *events_table; - LIST_HEAD(aliases); int res = 0; events_table = find_core_events_table("testarch", "testcpu"); if (!events_table) return -1; - pmu_add_cpu_aliases_table(&aliases, pmu, events_table); - pmu_add_sys_aliases(&aliases, pmu); + pmu_add_cpu_aliases_table(pmu, events_table); + pmu_add_sys_aliases(pmu); /* Count how many aliases we generated */ - list_for_each_entry(alias, &aliases, list) + list_for_each_entry(alias, &pmu->aliases, list) alias_count++; /* Count how many aliases we expect from the known table */ @@ -592,7 +578,7 @@ static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu) goto out; } - list_for_each_entry(alias, &aliases, list) { + list_for_each_entry(alias, &pmu->aliases, list) { bool matched = false; for (table = &test_pmu->aliases[0]; *table; table++) { @@ -625,7 +611,7 @@ static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu) } out: - list_for_each_entry_safe(a, tmp, &aliases, list) { + list_for_each_entry_safe(a, tmp, &pmu->aliases, list) { list_del(&a->list); perf_pmu_free_alias(a); } @@ -732,8 +718,13 @@ static int test__aliases(struct test_suite *test __maybe_unused, } for (i = 0; i < ARRAY_SIZE(test_pmus); i++) { - int res = __test_uncore_pmu_event_aliases(&test_pmus[i]); + int res; + + INIT_LIST_HEAD(&test_pmus[i].pmu.format); + INIT_LIST_HEAD(&test_pmus[i].pmu.aliases); + INIT_LIST_HEAD(&test_pmus[i].pmu.caps); + res = __test_uncore_pmu_event_aliases(&test_pmus[i]); if (res) return res; } diff --git a/tools/perf/tests/pmu.c b/tools/perf/tests/pmu.c index a4a43db..2c1c349 100644 --- a/tools/perf/tests/pmu.c +++ b/tools/perf/tests/pmu.c @@ -171,7 +171,7 @@ static int test__pmu(struct test_suite *test __maybe_unused, int subtest __maybe } pmu->name = strdup("perf-pmu-test"); - ret = perf_pmu__format_parse(fd, &pmu->format); + ret = perf_pmu__format_parse(pmu, fd); if (ret) goto out; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 1839c36..42f3249 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -58,7 +58,7 @@ struct perf_pmu_format { * Parse & process all the sysfs attributes located under * the directory specified in 'dir' parameter. */ -int perf_pmu__format_parse(int dirfd, struct list_head *head) +int perf_pmu__format_parse(struct perf_pmu *pmu, int dirfd) { struct dirent *evt_ent; DIR *format_dir; @@ -96,7 +96,7 @@ int perf_pmu__format_parse(int dirfd, struct list_head *head) } perf_pmu_set_in(file, scanner); - ret = perf_pmu_parse(head, name, scanner); + ret = perf_pmu_parse(&pmu->format, name, scanner); perf_pmu_lex_destroy(scanner); fclose(file); } @@ -110,7 +110,7 @@ int perf_pmu__format_parse(int dirfd, struct list_head *head) * located at: * /sys/bus/event_source/devices//format as sysfs group attributes. */ -static int pmu_format(int dirfd, const char *name, struct list_head *format) +static int pmu_format(struct perf_pmu *pmu, int dirfd, const char *name) { int fd; @@ -119,7 +119,7 @@ static int pmu_format(int dirfd, const char *name, struct list_head *format) return 0; /* it'll close the fd */ - if (perf_pmu__format_parse(fd, format)) + if (perf_pmu__format_parse(pmu, fd)) return -1; return 0; @@ -508,7 +508,7 @@ static int pmu_aliases_parse(int dirfd, struct list_head *head) * Reading the pmu event aliases definition, which should be located at: * /sys/bus/event_source/devices//events as sysfs group attributes. */ -static int pmu_aliases(int dirfd, const char *name, struct list_head *head) +static int pmu_aliases(struct perf_pmu *pmu, int dirfd, const char *name) { int fd; @@ -517,7 +517,7 @@ static int pmu_aliases(int dirfd, const char *name, struct list_head *head) return 0; /* it'll close the fd */ - if (pmu_aliases_parse(fd, head)) + if (pmu_aliases_parse(fd, &pmu->aliases)) return -1; return 0; @@ -770,11 +770,10 @@ static int pmu_add_cpu_aliases_map_callback(const struct pmu_event *pe, * From the pmu_events_table, find the events that correspond to the given * PMU and add them to the list 'head'. */ -void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu, - const struct pmu_events_table *table) +void pmu_add_cpu_aliases_table(struct perf_pmu *pmu, const struct pmu_events_table *table) { struct pmu_add_cpu_aliases_map_data data = { - .head = head, + .head = &pmu->aliases, .default_pmu_name = perf_pmus__default_pmu_name(), .pmu = pmu, }; @@ -783,7 +782,7 @@ void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu, free(data.default_pmu_name); } -static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu) +static void pmu_add_cpu_aliases(struct perf_pmu *pmu) { const struct pmu_events_table *table; @@ -791,7 +790,7 @@ static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu) if (!table) return; - pmu_add_cpu_aliases_table(head, pmu, table); + pmu_add_cpu_aliases_table(pmu, table); } struct pmu_sys_event_iter_data { @@ -821,10 +820,10 @@ static int pmu_add_sys_aliases_iter_fn(const struct pmu_event *pe, return 0; } -void pmu_add_sys_aliases(struct list_head *head, struct perf_pmu *pmu) +void pmu_add_sys_aliases(struct perf_pmu *pmu) { struct pmu_sys_event_iter_data idata = { - .head = head, + .head = &pmu->aliases, .pmu = pmu, }; @@ -863,30 +862,33 @@ static int pmu_max_precise(int dirfd, struct perf_pmu *pmu) struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char *lookup_name) { struct perf_pmu *pmu; - LIST_HEAD(format); - LIST_HEAD(aliases); __u32 type; char *name = pmu_find_real_name(lookup_name); char *alias_name; + pmu = zalloc(sizeof(*pmu)); + if (!pmu) + return NULL; + + INIT_LIST_HEAD(&pmu->format); + INIT_LIST_HEAD(&pmu->aliases); + INIT_LIST_HEAD(&pmu->caps); /* * The pmu data we store & need consists of the pmu * type value and format definitions. Load both right * now. */ - if (pmu_format(dirfd, name, &format)) + if (pmu_format(pmu, dirfd, name)) { + free(pmu); return NULL; - + } /* * Check the aliases first to avoid unnecessary work. */ - if (pmu_aliases(dirfd, name, &aliases)) - return NULL; - - pmu = zalloc(sizeof(*pmu)); - if (!pmu) + if (pmu_aliases(pmu, dirfd, name)) { + free(pmu); return NULL; - + } pmu->is_core = is_pmu_core(name); pmu->cpus = pmu_cpumask(dirfd, name, pmu->is_core); pmu->name = strdup(name); @@ -909,14 +911,8 @@ struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char if (pmu->is_uncore) pmu->id = pmu_id(name); pmu->max_precise = pmu_max_precise(dirfd, pmu); - pmu_add_cpu_aliases(&aliases, pmu); - pmu_add_sys_aliases(&aliases, pmu); - - INIT_LIST_HEAD(&pmu->format); - INIT_LIST_HEAD(&pmu->aliases); - INIT_LIST_HEAD(&pmu->caps); - list_splice(&format, &pmu->format); - list_splice(&aliases, &pmu->aliases); + pmu_add_cpu_aliases(pmu); + pmu_add_sys_aliases(pmu); list_add_tail(&pmu->list, pmus); pmu->default_config = perf_pmu__get_default_config(pmu); @@ -1397,6 +1393,17 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, return 0; } +struct perf_pmu_alias *perf_pmu__find_alias(struct perf_pmu *pmu, const char *event) +{ + struct perf_pmu_alias *alias; + + list_for_each_entry(alias, &pmu->aliases, list) + if (!strcmp(event, alias->name)) + return alias; + + return NULL; +} + int perf_pmu__new_format(struct list_head *list, char *name, int config, unsigned long *bits) { diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 1249fca..c426805 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -213,7 +213,7 @@ struct perf_pmu_alias { char *pmu_name; }; -void pmu_add_sys_aliases(struct list_head *head, struct perf_pmu *pmu); +void pmu_add_sys_aliases(struct perf_pmu *pmu); int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, struct list_head *head_terms, struct parse_events_error *error); @@ -225,12 +225,11 @@ __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 list_head *head_terms, struct perf_pmu_info *info); -struct list_head *perf_pmu__alias(struct perf_pmu *pmu, - struct list_head *head_terms); +struct perf_pmu_alias *perf_pmu__find_alias(struct perf_pmu *pmu, const char *event); int perf_pmu__new_format(struct list_head *list, char *name, int config, unsigned long *bits); -int perf_pmu__format_parse(int dirfd, struct list_head *head); +int perf_pmu__format_parse(struct perf_pmu *pmu, int dirfd); bool perf_pmu__has_format(const struct perf_pmu *pmu, const char *name); bool is_pmu_core(const char *name); @@ -255,7 +254,7 @@ bool perf_pmu__file_exists(struct perf_pmu *pmu, const char *name); int perf_pmu__test(void); struct perf_event_attr *perf_pmu__get_default_config(struct perf_pmu *pmu); -void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu, +void pmu_add_cpu_aliases_table(struct perf_pmu *pmu, const struct pmu_events_table *table); char *perf_pmu__getcpuid(struct perf_pmu *pmu);