diff options
Diffstat (limited to 'tools/perf/util/evsel.c')
| -rw-r--r-- | tools/perf/util/evsel.c | 335 |
1 files changed, 260 insertions, 75 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 1974395492d7..d264c143b592 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -48,6 +48,7 @@ #include "record.h" #include "debug.h" #include "trace-event.h" +#include "session.h" #include "stat.h" #include "string2.h" #include "memswap.h" @@ -56,8 +57,10 @@ #include "off_cpu.h" #include "pmu.h" #include "pmus.h" +#include "drm_pmu.h" #include "hwmon_pmu.h" #include "tool_pmu.h" +#include "tp_pmu.h" #include "rlimit.h" #include "../perf-sys.h" #include "util/parse-branch-options.h" @@ -487,7 +490,7 @@ struct evsel *evsel__clone(struct evsel *dest, struct evsel *orig) return NULL; evsel->core.cpus = perf_cpu_map__get(orig->core.cpus); - evsel->core.own_cpus = perf_cpu_map__get(orig->core.own_cpus); + evsel->core.pmu_cpus = perf_cpu_map__get(orig->core.pmu_cpus); evsel->core.threads = perf_thread_map__get(orig->core.threads); evsel->core.nr_members = orig->core.nr_members; evsel->core.system_wide = orig->core.system_wide; @@ -552,11 +555,11 @@ struct evsel *evsel__clone(struct evsel *dest, struct evsel *orig) evsel->exclude_GH = orig->exclude_GH; evsel->sample_read = orig->sample_read; - evsel->auto_merge_stats = orig->auto_merge_stats; evsel->collect_stat = orig->collect_stat; evsel->weak_group = orig->weak_group; evsel->use_config_name = orig->use_config_name; evsel->pmu = orig->pmu; + evsel->first_wildcard_match = orig->first_wildcard_match; if (evsel__copy_config_terms(evsel, orig) < 0) goto out_err; @@ -570,24 +573,6 @@ out_err: return NULL; } -static int trace_event__id(const char *sys, const char *name) -{ - char *tp_dir = get_events_file(sys); - char path[PATH_MAX]; - int id, err; - - if (!tp_dir) - return -1; - - scnprintf(path, PATH_MAX, "%s/%s/id", tp_dir, name); - put_events_file(tp_dir); - err = filename__read_int(path, &id); - if (err) - return err; - - return id; -} - /* * Returns pointer with encoded error via <linux/err.h> interface. */ @@ -621,7 +606,7 @@ struct evsel *evsel__newtp_idx(const char *sys, const char *name, int idx, bool event_attr_init(&attr); if (format) { - id = trace_event__id(sys, name); + id = tp_pmu__id(sys, name); if (id < 0) { err = id; goto out_free; @@ -1275,9 +1260,10 @@ static void evsel__set_default_freq_period(struct record_opts *opts, } } -static bool evsel__is_offcpu_event(struct evsel *evsel) +bool evsel__is_offcpu_event(struct evsel *evsel) { - return evsel__is_bpf_output(evsel) && evsel__name_is(evsel, OFFCPU_EVENT); + return evsel__is_bpf_output(evsel) && evsel__name_is(evsel, OFFCPU_EVENT) && + evsel->core.attr.sample_type & PERF_SAMPLE_RAW; } /* @@ -1425,7 +1411,7 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts, evsel__set_sample_bit(evsel, CPU); } - if (opts->sample_address) + if (opts->sample_data_src) evsel__set_sample_bit(evsel, DATA_SRC); if (opts->sample_phys_addr) @@ -1440,9 +1426,10 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts, attr->branch_sample_type = opts->branch_stack; } - if (opts->sample_weight) + if (opts->sample_weight || evsel->retire_lat) { arch_evsel__set_sample_weight(evsel); - + evsel->retire_lat = false; + } attr->task = track; attr->mmap = track; attr->mmap2 = track && !perf_missing_features.mmap2; @@ -1524,7 +1511,7 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts, attr->exclude_user = 1; } - if (evsel->core.own_cpus || evsel->unit) + if (evsel->core.pmu_cpus || evsel->unit) evsel->core.attr.read_format |= PERF_FORMAT_ID; /* @@ -1554,8 +1541,10 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts, if (evsel__is_dummy_event(evsel)) evsel__reset_sample_bit(evsel, BRANCH_STACK); - if (evsel__is_offcpu_event(evsel)) + if (evsel__is_offcpu_event(evsel)) { evsel->core.attr.sample_type &= OFFCPU_SAMPLE_TYPES; + attr->inherit = 0; + } arch__post_evsel_config(evsel, attr); } @@ -1652,10 +1641,21 @@ static void evsel__free_config_terms(struct evsel *evsel) free_config_terms(&evsel->config_terms); } +static void (*evsel__priv_destructor)(void *priv); + +void evsel__set_priv_destructor(void (*destructor)(void *priv)) +{ + assert(evsel__priv_destructor == NULL); + + evsel__priv_destructor = destructor; +} + void evsel__exit(struct evsel *evsel) { assert(list_empty(&evsel->core.node)); assert(evsel->evlist == NULL); + if (evsel__is_retire_lat(evsel)) + evsel__tpebs_close(evsel); bpf_counter__destroy(evsel); perf_bpf_filter__destroy(evsel); evsel__free_counts(evsel); @@ -1663,9 +1663,7 @@ void evsel__exit(struct evsel *evsel) perf_evsel__free_id(&evsel->core); evsel__free_config_terms(evsel); cgroup__put(evsel->cgrp); - perf_cpu_map__put(evsel->core.cpus); - perf_cpu_map__put(evsel->core.own_cpus); - perf_thread_map__put(evsel->core.threads); + perf_evsel__exit(&evsel->core); zfree(&evsel->group_name); zfree(&evsel->name); #ifdef HAVE_LIBTRACEEVENT @@ -1680,6 +1678,8 @@ void evsel__exit(struct evsel *evsel) hashmap__free(evsel->per_pkg_mask); evsel->per_pkg_mask = NULL; zfree(&evsel->metric_events); + if (evsel__priv_destructor) + evsel__priv_destructor(evsel->priv); perf_evsel__object.fini(evsel); if (evsel__tool_event(evsel) == TOOL_PMU__EVENT_SYSTEM_TIME || evsel__tool_event(evsel) == TOOL_PMU__EVENT_USER_TIME) @@ -1718,11 +1718,6 @@ static int evsel__read_one(struct evsel *evsel, int cpu_map_idx, int thread) return perf_evsel__read(&evsel->core, cpu_map_idx, thread, count); } -static int evsel__read_retire_lat(struct evsel *evsel, int cpu_map_idx, int thread) -{ - return tpebs_set_evsel(evsel, cpu_map_idx, thread); -} - static void evsel__set_count(struct evsel *counter, int cpu_map_idx, int thread, u64 val, u64 ena, u64 run, u64 lost) { @@ -1730,8 +1725,8 @@ static void evsel__set_count(struct evsel *counter, int cpu_map_idx, int thread, count = perf_counts(counter->counts, cpu_map_idx, thread); - if (counter->retire_lat) { - evsel__read_retire_lat(counter, cpu_map_idx, thread); + if (evsel__is_retire_lat(counter)) { + evsel__tpebs_read(counter, cpu_map_idx, thread); perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, true); return; } @@ -1888,8 +1883,11 @@ int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread) if (evsel__is_hwmon(evsel)) return evsel__hwmon_pmu_read(evsel, cpu_map_idx, thread); + if (evsel__is_drm(evsel)) + return evsel__drm_pmu_read(evsel, cpu_map_idx, thread); + if (evsel__is_retire_lat(evsel)) - return evsel__read_retire_lat(evsel, cpu_map_idx, thread); + return evsel__tpebs_read(evsel, cpu_map_idx, thread); if (evsel->core.attr.read_format & PERF_FORMAT_GROUP) return evsel__read_group(evsel, cpu_map_idx, thread); @@ -2566,25 +2564,6 @@ check: return false; } -static bool evsel__handle_error_quirks(struct evsel *evsel, int error) -{ - /* - * AMD core PMU tries to forward events with precise_ip to IBS PMU - * implicitly. But IBS PMU has more restrictions so it can fail with - * supported event attributes. Let's forward it back to the core PMU - * by clearing precise_ip only if it's from precise_max (:P). - */ - if ((error == -EINVAL || error == -ENOENT) && x86__is_amd_cpu() && - evsel->core.attr.precise_ip && evsel->precise_max) { - evsel->core.attr.precise_ip = 0; - pr_debug2_peo("removing precise_ip on AMD\n"); - display_attr(&evsel->core.attr); - return true; - } - - return false; -} - static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, struct perf_thread_map *threads, int start_cpu_map_idx, int end_cpu_map_idx) @@ -2595,7 +2574,7 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, struct perf_cpu cpu; if (evsel__is_retire_lat(evsel)) - return tpebs_start(evsel->evlist); + return evsel__tpebs_open(evsel); err = __evsel__prepare_open(evsel, cpus, threads); if (err) @@ -2628,6 +2607,11 @@ fallback_missing_features: start_cpu_map_idx, end_cpu_map_idx); } + if (evsel__is_drm(evsel)) { + return evsel__drm_pmu_open(evsel, threads, + start_cpu_map_idx, + end_cpu_map_idx); + } for (idx = start_cpu_map_idx; idx < end_cpu_map_idx; idx++) { cpu = perf_cpu_map__cpu(cpus, idx); @@ -2730,9 +2714,6 @@ try_fallback: if (evsel__precise_ip_fallback(evsel)) goto retry_open; - if (evsel__handle_error_quirks(evsel, err)) - goto retry_open; - out_close: if (err) threads->err_thread = thread; @@ -2759,22 +2740,37 @@ int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus, void evsel__close(struct evsel *evsel) { if (evsel__is_retire_lat(evsel)) - tpebs_delete(); + evsel__tpebs_close(evsel); perf_evsel__close(&evsel->core); perf_evsel__free_id(&evsel->core); } -int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu_map_idx) +int evsel__open_per_cpu_and_thread(struct evsel *evsel, + struct perf_cpu_map *cpus, int cpu_map_idx, + struct perf_thread_map *threads) { if (cpu_map_idx == -1) - return evsel__open_cpu(evsel, cpus, NULL, 0, perf_cpu_map__nr(cpus)); + return evsel__open_cpu(evsel, cpus, threads, 0, perf_cpu_map__nr(cpus)); + + return evsel__open_cpu(evsel, cpus, threads, cpu_map_idx, cpu_map_idx + 1); +} - return evsel__open_cpu(evsel, cpus, NULL, cpu_map_idx, cpu_map_idx + 1); +int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu_map_idx) +{ + struct perf_thread_map *threads = thread_map__new_by_tid(-1); + int ret = evsel__open_per_cpu_and_thread(evsel, cpus, cpu_map_idx, threads); + + perf_thread_map__put(threads); + return ret; } int evsel__open_per_thread(struct evsel *evsel, struct perf_thread_map *threads) { - return evsel__open(evsel, NULL, threads); + struct perf_cpu_map *cpus = perf_cpu_map__new_any_cpu(); + int ret = evsel__open_per_cpu_and_thread(evsel, cpus, -1, threads); + + perf_cpu_map__put(cpus); + return ret; } static int perf_evsel__parse_id_sample(const struct evsel *evsel, @@ -2867,11 +2863,18 @@ perf_event__check_size(union perf_event *event, unsigned int sample_size) return 0; } -void __weak arch_perf_parse_sample_weight(struct perf_sample *data, - const __u64 *array, - u64 type __maybe_unused) +static void perf_parse_sample_weight(struct perf_sample *data, const __u64 *array, u64 type) { - data->weight = *array; + union perf_sample_weight weight; + + weight.full = *array; + if (type & PERF_SAMPLE_WEIGHT_STRUCT) { + data->weight = weight.var1_dw; + data->ins_lat = weight.var2_w; + data->weight3 = weight.var3_w; + } else { + data->weight = weight.full; + } } u64 evsel__bitfield_swap_branch_flags(u64 value) @@ -2945,6 +2948,35 @@ static inline bool evsel__has_branch_counters(const struct evsel *evsel) return false; } +static int __set_offcpu_sample(struct perf_sample *data) +{ + u64 *array = data->raw_data; + u32 max_size = data->raw_size, *p32; + const void *endp = (void *)array + max_size; + + if (array == NULL) + return -EFAULT; + + OVERFLOW_CHECK_u64(array); + p32 = (void *)array++; + data->pid = p32[0]; + data->tid = p32[1]; + + OVERFLOW_CHECK_u64(array); + data->period = *array++; + + OVERFLOW_CHECK_u64(array); + data->callchain = (struct ip_callchain *)array++; + OVERFLOW_CHECK(array, data->callchain->nr * sizeof(u64), max_size); + data->ip = data->callchain->ips[1]; + array += data->callchain->nr; + + OVERFLOW_CHECK_u64(array); + data->cgroup = *array; + + return 0; +} + int evsel__parse_sample(struct evsel *evsel, union perf_event *event, struct perf_sample *data) { @@ -3228,7 +3260,7 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event, if (type & PERF_SAMPLE_WEIGHT_TYPE) { OVERFLOW_CHECK_u64(array); - arch_perf_parse_sample_weight(data, array, type); + perf_parse_sample_weight(data, array, type); array++; } @@ -3299,6 +3331,9 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event, array = (void *)array + sz; } + if (evsel__is_offcpu_event(evsel)) + return __set_offcpu_sample(data); + return 0; } @@ -3774,6 +3809,10 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target, return scnprintf(msg, size, "%s", "No hardware sampling interrupt available.\n"); #endif + if (!target__has_cpu(target)) + return scnprintf(msg, size, + "Unsupported event (%s) in per-thread mode, enable system wide with '-a'.", + evsel__name(evsel)); break; case EBUSY: if (find_process("oprofiled")) @@ -3824,11 +3863,16 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target, err, str_error_r(err, sbuf, sizeof(sbuf)), evsel__name(evsel)); } +struct perf_session *evsel__session(struct evsel *evsel) +{ + return evsel && evsel->evlist ? evsel->evlist->session : NULL; +} + struct perf_env *evsel__env(struct evsel *evsel) { - if (evsel && evsel->evlist && evsel->evlist->env) - return evsel->evlist->env; - return &perf_env; + struct perf_session *session = evsel__session(evsel); + + return session ? perf_session__env(session) : NULL; } static int store_evsel_ids(struct evsel *evsel, struct evlist *evlist) @@ -3939,3 +3983,144 @@ void evsel__remove_from_group(struct evsel *evsel, struct evsel *leader) leader->core.nr_members--; } } + +bool evsel__set_needs_uniquify(struct evsel *counter, const struct perf_stat_config *config) +{ + struct evsel *evsel; + + if (counter->needs_uniquify) { + /* Already set. */ + return true; + } + + if (counter->use_config_name || counter->is_libpfm_event) { + /* Original name will be used. */ + return false; + } + + if (!config->hybrid_merge && evsel__is_hybrid(counter)) { + /* Unique hybrid counters necessary. */ + counter->needs_uniquify = true; + return true; + } + + if (counter->core.attr.type < PERF_TYPE_MAX && counter->core.attr.type != PERF_TYPE_RAW) { + /* Legacy event, don't uniquify. */ + return false; + } + + if (counter->pmu && counter->pmu->is_core && + counter->alternate_hw_config != PERF_COUNT_HW_MAX) { + /* A sysfs or json event replacing a legacy event, don't uniquify. */ + return false; + } + + if (config->aggr_mode == AGGR_NONE) { + /* Always unique with no aggregation. */ + counter->needs_uniquify = true; + return true; + } + + if (counter->first_wildcard_match != NULL) { + /* + * If stats are merged then only the first_wildcard_match is + * displayed, there is no need to uniquify this evsel as the + * name won't be shown. + */ + return false; + } + + /* + * Do other non-merged events in the evlist have the same name? If so + * uniquify is necessary. + */ + evlist__for_each_entry(counter->evlist, evsel) { + if (evsel == counter || evsel->first_wildcard_match || evsel->pmu == counter->pmu) + continue; + + if (evsel__name_is(counter, evsel__name(evsel))) { + counter->needs_uniquify = true; + return true; + } + } + return false; +} + +void evsel__uniquify_counter(struct evsel *counter) +{ + const char *name, *pmu_name; + char *new_name, *config; + int ret; + + /* No uniquification necessary. */ + if (!counter->needs_uniquify) + return; + + /* The evsel was already uniquified. */ + if (counter->uniquified_name) + return; + + /* Avoid checking to uniquify twice. */ + counter->uniquified_name = true; + + name = evsel__name(counter); + pmu_name = counter->pmu->name; + /* Already prefixed by the PMU name. */ + if (!strncmp(name, pmu_name, strlen(pmu_name))) + return; + + config = strchr(name, '/'); + if (config) { + int len = config - name; + + if (config[1] == '/') { + /* case: event// */ + ret = asprintf(&new_name, "%s/%.*s/%s", pmu_name, len, name, config + 2); + } else { + /* case: event/.../ */ + ret = asprintf(&new_name, "%s/%.*s,%s", pmu_name, len, name, config + 1); + } + } else { + config = strchr(name, ':'); + if (config) { + /* case: event:.. */ + int len = config - name; + + ret = asprintf(&new_name, "%s/%.*s/%s", pmu_name, len, name, config + 1); + } else { + /* case: event */ + ret = asprintf(&new_name, "%s/%s/", pmu_name, name); + } + } + if (ret > 0) { + free(counter->name); + counter->name = new_name; + } else { + /* ENOMEM from asprintf. */ + counter->uniquified_name = false; + } +} + +void evsel__warn_user_requested_cpus(struct evsel *evsel, struct perf_cpu_map *user_requested_cpus) +{ + struct perf_cpu_map *intersect, *online = NULL; + const struct perf_pmu *pmu = evsel__find_pmu(evsel); + + if (pmu && pmu->is_core) { + intersect = perf_cpu_map__intersect(pmu->cpus, user_requested_cpus); + } else { + online = cpu_map__online(); + intersect = perf_cpu_map__intersect(online, user_requested_cpus); + } + if (!perf_cpu_map__equal(intersect, user_requested_cpus)) { + char buf1[128]; + char buf2[128]; + + cpu_map__snprint(user_requested_cpus, buf1, sizeof(buf1)); + cpu_map__snprint(online ?: pmu->cpus, buf2, sizeof(buf2)); + pr_warning("WARNING: A requested CPU in '%s' is not supported by PMU '%s' (CPUs %s) for event '%s'\n", + buf1, pmu ? pmu->name : "cpu", buf2, evsel__name(evsel)); + } + perf_cpu_map__put(intersect); + perf_cpu_map__put(online); +} |