| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * builtin-stat.c |
| * |
| * Builtin stat command: Give a precise performance counters summary |
| * overview about any workload, CPU or specific PID. |
| * |
| * Sample output: |
| |
| $ perf stat ./hackbench 10 |
| |
| Time: 0.118 |
| |
| Performance counter stats for './hackbench 10': |
| |
| 1708.761321 task-clock # 11.037 CPUs utilized |
| 41,190 context-switches # 0.024 M/sec |
| 6,735 CPU-migrations # 0.004 M/sec |
| 17,318 page-faults # 0.010 M/sec |
| 5,205,202,243 cycles # 3.046 GHz |
| 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle |
| 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle |
| 2,603,501,247 instructions # 0.50 insns per cycle |
| # 1.48 stalled cycles per insn |
| 484,357,498 branches # 283.455 M/sec |
| 6,388,934 branch-misses # 1.32% of all branches |
| |
| 0.154822978 seconds time elapsed |
| |
| * |
| * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com> |
| * |
| * Improvements and fixes by: |
| * |
| * Arjan van de Ven <arjan@linux.intel.com> |
| * Yanmin Zhang <yanmin.zhang@intel.com> |
| * Wu Fengguang <fengguang.wu@intel.com> |
| * Mike Galbraith <efault@gmx.de> |
| * Paul Mackerras <paulus@samba.org> |
| * Jaswinder Singh Rajput <jaswinder@kernel.org> |
| */ |
| |
| #include "builtin.h" |
| #include "perf.h" |
| #include "util/cgroup.h" |
| #include <subcmd/parse-options.h> |
| #include "util/parse-events.h" |
| #include "util/pmu.h" |
| #include "util/event.h" |
| #include "util/evlist.h" |
| #include "util/evlist-hybrid.h" |
| #include "util/evsel.h" |
| #include "util/debug.h" |
| #include "util/color.h" |
| #include "util/stat.h" |
| #include "util/header.h" |
| #include "util/cpumap.h" |
| #include "util/thread_map.h" |
| #include "util/counts.h" |
| #include "util/topdown.h" |
| #include "util/session.h" |
| #include "util/tool.h" |
| #include "util/string2.h" |
| #include "util/metricgroup.h" |
| #include "util/synthetic-events.h" |
| #include "util/target.h" |
| #include "util/time-utils.h" |
| #include "util/top.h" |
| #include "util/affinity.h" |
| #include "util/pfm.h" |
| #include "util/bpf_counter.h" |
| #include "util/iostat.h" |
| #include "util/pmu-hybrid.h" |
| #include "asm/bug.h" |
| |
| #include <linux/time64.h> |
| #include <linux/zalloc.h> |
| #include <api/fs/fs.h> |
| #include <errno.h> |
| #include <signal.h> |
| #include <stdlib.h> |
| #include <sys/prctl.h> |
| #include <inttypes.h> |
| #include <locale.h> |
| #include <math.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| #include <sys/time.h> |
| #include <sys/resource.h> |
| #include <linux/err.h> |
| |
| #include <linux/ctype.h> |
| #include <perf/evlist.h> |
| |
| #define DEFAULT_SEPARATOR " " |
| #define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi" |
| |
| static void print_counters(struct timespec *ts, int argc, const char **argv); |
| |
| /* Default events used for perf stat -T */ |
| static const char *transaction_attrs = { |
| "task-clock," |
| "{" |
| "instructions," |
| "cycles," |
| "cpu/cycles-t/," |
| "cpu/tx-start/," |
| "cpu/el-start/," |
| "cpu/cycles-ct/" |
| "}" |
| }; |
| |
| /* More limited version when the CPU does not have all events. */ |
| static const char * transaction_limited_attrs = { |
| "task-clock," |
| "{" |
| "instructions," |
| "cycles," |
| "cpu/cycles-t/," |
| "cpu/tx-start/" |
| "}" |
| }; |
| |
| static const char * topdown_attrs[] = { |
| "topdown-total-slots", |
| "topdown-slots-retired", |
| "topdown-recovery-bubbles", |
| "topdown-fetch-bubbles", |
| "topdown-slots-issued", |
| NULL, |
| }; |
| |
| static const char *topdown_metric_attrs[] = { |
| "slots", |
| "topdown-retiring", |
| "topdown-bad-spec", |
| "topdown-fe-bound", |
| "topdown-be-bound", |
| NULL, |
| }; |
| |
| static const char *topdown_metric_L2_attrs[] = { |
| "slots", |
| "topdown-retiring", |
| "topdown-bad-spec", |
| "topdown-fe-bound", |
| "topdown-be-bound", |
| "topdown-heavy-ops", |
| "topdown-br-mispredict", |
| "topdown-fetch-lat", |
| "topdown-mem-bound", |
| NULL, |
| }; |
| |
| #define TOPDOWN_MAX_LEVEL 2 |
| |
| static const char *smi_cost_attrs = { |
| "{" |
| "msr/aperf/," |
| "msr/smi/," |
| "cycles" |
| "}" |
| }; |
| |
| static struct evlist *evsel_list; |
| static bool all_counters_use_bpf = true; |
| |
| static struct target target = { |
| .uid = UINT_MAX, |
| }; |
| |
| #define METRIC_ONLY_LEN 20 |
| |
| static volatile pid_t child_pid = -1; |
| static int detailed_run = 0; |
| static bool transaction_run; |
| static bool topdown_run = false; |
| static bool smi_cost = false; |
| static bool smi_reset = false; |
| static int big_num_opt = -1; |
| static bool group = false; |
| static const char *pre_cmd = NULL; |
| static const char *post_cmd = NULL; |
| static bool sync_run = false; |
| static bool forever = false; |
| static bool force_metric_only = false; |
| static struct timespec ref_time; |
| static bool append_file; |
| static bool interval_count; |
| static const char *output_name; |
| static int output_fd; |
| |
| struct perf_stat { |
| bool record; |
| struct perf_data data; |
| struct perf_session *session; |
| u64 bytes_written; |
| struct perf_tool tool; |
| bool maps_allocated; |
| struct perf_cpu_map *cpus; |
| struct perf_thread_map *threads; |
| enum aggr_mode aggr_mode; |
| }; |
| |
| static struct perf_stat perf_stat; |
| #define STAT_RECORD perf_stat.record |
| |
| static volatile int done = 0; |
| |
| static struct perf_stat_config stat_config = { |
| .aggr_mode = AGGR_GLOBAL, |
| .scale = true, |
| .unit_width = 4, /* strlen("unit") */ |
| .run_count = 1, |
| .metric_only_len = METRIC_ONLY_LEN, |
| .walltime_nsecs_stats = &walltime_nsecs_stats, |
| .big_num = true, |
| .ctl_fd = -1, |
| .ctl_fd_ack = -1, |
| .iostat_run = false, |
| }; |
| |
| static bool cpus_map_matched(struct evsel *a, struct evsel *b) |
| { |
| if (!a->core.cpus && !b->core.cpus) |
| return true; |
| |
| if (!a->core.cpus || !b->core.cpus) |
| return false; |
| |
| if (a->core.cpus->nr != b->core.cpus->nr) |
| return false; |
| |
| for (int i = 0; i < a->core.cpus->nr; i++) { |
| if (a->core.cpus->map[i] != b->core.cpus->map[i]) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static void evlist__check_cpu_maps(struct evlist *evlist) |
| { |
| struct evsel *evsel, *pos, *leader; |
| char buf[1024]; |
| |
| if (evlist__has_hybrid(evlist)) |
| evlist__warn_hybrid_group(evlist); |
| |
| evlist__for_each_entry(evlist, evsel) { |
| leader = evsel__leader(evsel); |
| |
| /* Check that leader matches cpus with each member. */ |
| if (leader == evsel) |
| continue; |
| if (cpus_map_matched(leader, evsel)) |
| continue; |
| |
| /* If there's mismatch disable the group and warn user. */ |
| WARN_ONCE(1, "WARNING: grouped events cpus do not match, disabling group:\n"); |
| evsel__group_desc(leader, buf, sizeof(buf)); |
| pr_warning(" %s\n", buf); |
| |
| if (verbose) { |
| cpu_map__snprint(leader->core.cpus, buf, sizeof(buf)); |
| pr_warning(" %s: %s\n", leader->name, buf); |
| cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf)); |
| pr_warning(" %s: %s\n", evsel->name, buf); |
| } |
| |
| for_each_group_evsel(pos, leader) { |
| evsel__set_leader(pos, pos); |
| pos->core.nr_members = 0; |
| } |
| evsel->core.leader->nr_members = 0; |
| } |
| } |
| |
| static inline void diff_timespec(struct timespec *r, struct timespec *a, |
| struct timespec *b) |
| { |
| r->tv_sec = a->tv_sec - b->tv_sec; |
| if (a->tv_nsec < b->tv_nsec) { |
| r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec; |
| r->tv_sec--; |
| } else { |
| r->tv_nsec = a->tv_nsec - b->tv_nsec ; |
| } |
| } |
| |
| static void perf_stat__reset_stats(void) |
| { |
| int i; |
| |
| evlist__reset_stats(evsel_list); |
| perf_stat__reset_shadow_stats(); |
| |
| for (i = 0; i < stat_config.stats_num; i++) |
| perf_stat__reset_shadow_per_stat(&stat_config.stats[i]); |
| } |
| |
| static int process_synthesized_event(struct perf_tool *tool __maybe_unused, |
| union perf_event *event, |
| struct perf_sample *sample __maybe_unused, |
| struct machine *machine __maybe_unused) |
| { |
| if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) { |
| pr_err("failed to write perf data, error: %m\n"); |
| return -1; |
| } |
| |
| perf_stat.bytes_written += event->header.size; |
| return 0; |
| } |
| |
| static int write_stat_round_event(u64 tm, u64 type) |
| { |
| return perf_event__synthesize_stat_round(NULL, tm, type, |
| process_synthesized_event, |
| NULL); |
| } |
| |
| #define WRITE_STAT_ROUND_EVENT(time, interval) \ |
| write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval) |
| |
| #define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y) |
| |
| static int evsel__write_stat_event(struct evsel *counter, u32 cpu, u32 thread, |
| struct perf_counts_values *count) |
| { |
| struct perf_sample_id *sid = SID(counter, cpu, thread); |
| |
| return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, |
| process_synthesized_event, NULL); |
| } |
| |
| static int read_single_counter(struct evsel *counter, int cpu, |
| int thread, struct timespec *rs) |
| { |
| if (counter->tool_event == PERF_TOOL_DURATION_TIME) { |
| u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL; |
| struct perf_counts_values *count = |
| perf_counts(counter->counts, cpu, thread); |
| count->ena = count->run = val; |
| count->val = val; |
| return 0; |
| } |
| return evsel__read_counter(counter, cpu, thread); |
| } |
| |
| /* |
| * Read out the results of a single counter: |
| * do not aggregate counts across CPUs in system-wide mode |
| */ |
| static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu) |
| { |
| int nthreads = perf_thread_map__nr(evsel_list->core.threads); |
| int thread; |
| |
| if (!counter->supported) |
| return -ENOENT; |
| |
| if (counter->core.system_wide) |
| nthreads = 1; |
| |
| for (thread = 0; thread < nthreads; thread++) { |
| struct perf_counts_values *count; |
| |
| count = perf_counts(counter->counts, cpu, thread); |
| |
| /* |
| * The leader's group read loads data into its group members |
| * (via evsel__read_counter()) and sets their count->loaded. |
| */ |
| if (!perf_counts__is_loaded(counter->counts, cpu, thread) && |
| read_single_counter(counter, cpu, thread, rs)) { |
| counter->counts->scaled = -1; |
| perf_counts(counter->counts, cpu, thread)->ena = 0; |
| perf_counts(counter->counts, cpu, thread)->run = 0; |
| return -1; |
| } |
| |
| perf_counts__set_loaded(counter->counts, cpu, thread, false); |
| |
| if (STAT_RECORD) { |
| if (evsel__write_stat_event(counter, cpu, thread, count)) { |
| pr_err("failed to write stat event\n"); |
| return -1; |
| } |
| } |
| |
| if (verbose > 1) { |
| fprintf(stat_config.output, |
| "%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
| evsel__name(counter), |
| cpu, |
| count->val, count->ena, count->run); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int read_affinity_counters(struct timespec *rs) |
| { |
| struct evsel *counter; |
| struct affinity affinity; |
| int i, ncpus, cpu; |
| |
| if (all_counters_use_bpf) |
| return 0; |
| |
| if (affinity__setup(&affinity) < 0) |
| return -1; |
| |
| ncpus = perf_cpu_map__nr(evsel_list->core.all_cpus); |
| if (!target__has_cpu(&target) || target__has_per_thread(&target)) |
| ncpus = 1; |
| evlist__for_each_cpu(evsel_list, i, cpu) { |
| if (i >= ncpus) |
| break; |
| affinity__set(&affinity, cpu); |
| |
| evlist__for_each_entry(evsel_list, counter) { |
| if (evsel__cpu_iter_skip(counter, cpu)) |
| continue; |
| if (evsel__is_bpf(counter)) |
| continue; |
| if (!counter->err) { |
| counter->err = read_counter_cpu(counter, rs, |
| counter->cpu_iter - 1); |
| } |
| } |
| } |
| affinity__cleanup(&affinity); |
| return 0; |
| } |
| |
| static int read_bpf_map_counters(void) |
| { |
| struct evsel *counter; |
| int err; |
| |
| evlist__for_each_entry(evsel_list, counter) { |
| if (!evsel__is_bpf(counter)) |
| continue; |
| |
| err = bpf_counter__read(counter); |
| if (err) |
| return err; |
| } |
| return 0; |
| } |
| |
| static void read_counters(struct timespec *rs) |
| { |
| struct evsel *counter; |
| |
| if (!stat_config.stop_read_counter) { |
| if (read_bpf_map_counters() || |
| read_affinity_counters(rs)) |
| return; |
| } |
| |
| evlist__for_each_entry(evsel_list, counter) { |
| if (counter->err) |
| pr_debug("failed to read counter %s\n", counter->name); |
| if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter)) |
| pr_warning("failed to process counter %s\n", counter->name); |
| counter->err = 0; |
| } |
| } |
| |
| static int runtime_stat_new(struct perf_stat_config *config, int nthreads) |
| { |
| int i; |
| |
| config->stats = calloc(nthreads, sizeof(struct runtime_stat)); |
| if (!config->stats) |
| return -1; |
| |
| config->stats_num = nthreads; |
| |
| for (i = 0; i < nthreads; i++) |
| runtime_stat__init(&config->stats[i]); |
| |
| return 0; |
| } |
| |
| static void runtime_stat_delete(struct perf_stat_config *config) |
| { |
| int i; |
| |
| if (!config->stats) |
| return; |
| |
| for (i = 0; i < config->stats_num; i++) |
| runtime_stat__exit(&config->stats[i]); |
| |
| zfree(&config->stats); |
| } |
| |
| static void runtime_stat_reset(struct perf_stat_config *config) |
| { |
| int i; |
| |
| if (!config->stats) |
| return; |
| |
| for (i = 0; i < config->stats_num; i++) |
| perf_stat__reset_shadow_per_stat(&config->stats[i]); |
| } |
| |
| static void process_interval(void) |
| { |
| struct timespec ts, rs; |
| |
| clock_gettime(CLOCK_MONOTONIC, &ts); |
| diff_timespec(&rs, &ts, &ref_time); |
| |
| perf_stat__reset_shadow_per_stat(&rt_stat); |
| runtime_stat_reset(&stat_config); |
| read_counters(&rs); |
| |
| if (STAT_RECORD) { |
| if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL)) |
| pr_err("failed to write stat round event\n"); |
| } |
| |
| init_stats(&walltime_nsecs_stats); |
| update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL); |
| print_counters(&rs, 0, NULL); |
| } |
| |
| static bool handle_interval(unsigned int interval, int *times) |
| { |
| if (interval) { |
| process_interval(); |
| if (interval_count && !(--(*times))) |
| return true; |
| } |
| return false; |
| } |
| |
| static int enable_counters(void) |
| { |
| struct evsel *evsel; |
| int err; |
| |
| evlist__for_each_entry(evsel_list, evsel) { |
| if (!evsel__is_bpf(evsel)) |
| continue; |
| |
| err = bpf_counter__enable(evsel); |
| if (err) |
| return err; |
| } |
| |
| if (stat_config.initial_delay < 0) { |
| pr_info(EVLIST_DISABLED_MSG); |
| return 0; |
| } |
| |
| if (stat_config.initial_delay > 0) { |
| pr_info(EVLIST_DISABLED_MSG); |
| usleep(stat_config.initial_delay * USEC_PER_MSEC); |
| } |
| |
| /* |
| * We need to enable counters only if: |
| * - we don't have tracee (attaching to task or cpu) |
| * - we have initial delay configured |
| */ |
| if (!target__none(&target) || stat_config.initial_delay) { |
| if (!all_counters_use_bpf) |
| evlist__enable(evsel_list); |
| if (stat_config.initial_delay > 0) |
| pr_info(EVLIST_ENABLED_MSG); |
| } |
| return 0; |
| } |
| |
| static void disable_counters(void) |
| { |
| struct evsel *counter; |
| |
| /* |
| * If we don't have tracee (attaching to task or cpu), counters may |
| * still be running. To get accurate group ratios, we must stop groups |
| * from counting before reading their constituent counters. |
| */ |
| if (!target__none(&target)) { |
| evlist__for_each_entry(evsel_list, counter) |
| bpf_counter__disable(counter); |
| if (!all_counters_use_bpf) |
| evlist__disable(evsel_list); |
| } |
| } |
| |
| static volatile int workload_exec_errno; |
| |
| /* |
| * evlist__prepare_workload will send a SIGUSR1 |
| * if the fork fails, since we asked by setting its |
| * want_signal to true. |
| */ |
| static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, |
| void *ucontext __maybe_unused) |
| { |
| workload_exec_errno = info->si_value.sival_int; |
| } |
| |
| static bool evsel__should_store_id(struct evsel *counter) |
| { |
| return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID; |
| } |
| |
| static bool is_target_alive(struct target *_target, |
| struct perf_thread_map *threads) |
| { |
| struct stat st; |
| int i; |
| |
| if (!target__has_task(_target)) |
| return true; |
| |
| for (i = 0; i < threads->nr; i++) { |
| char path[PATH_MAX]; |
| |
| scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(), |
| threads->map[i].pid); |
| |
| if (!stat(path, &st)) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static void process_evlist(struct evlist *evlist, unsigned int interval) |
| { |
| enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; |
| |
| if (evlist__ctlfd_process(evlist, &cmd) > 0) { |
| switch (cmd) { |
| case EVLIST_CTL_CMD_ENABLE: |
| if (interval) |
| process_interval(); |
| break; |
| case EVLIST_CTL_CMD_DISABLE: |
| if (interval) |
| process_interval(); |
| break; |
| case EVLIST_CTL_CMD_SNAPSHOT: |
| case EVLIST_CTL_CMD_ACK: |
| case EVLIST_CTL_CMD_UNSUPPORTED: |
| case EVLIST_CTL_CMD_EVLIST: |
| case EVLIST_CTL_CMD_STOP: |
| case EVLIST_CTL_CMD_PING: |
| default: |
| break; |
| } |
| } |
| } |
| |
| static void compute_tts(struct timespec *time_start, struct timespec *time_stop, |
| int *time_to_sleep) |
| { |
| int tts = *time_to_sleep; |
| struct timespec time_diff; |
| |
| diff_timespec(&time_diff, time_stop, time_start); |
| |
| tts -= time_diff.tv_sec * MSEC_PER_SEC + |
| time_diff.tv_nsec / NSEC_PER_MSEC; |
| |
| if (tts < 0) |
| tts = 0; |
| |
| *time_to_sleep = tts; |
| } |
| |
| static int dispatch_events(bool forks, int timeout, int interval, int *times) |
| { |
| int child_exited = 0, status = 0; |
| int time_to_sleep, sleep_time; |
| struct timespec time_start, time_stop; |
| |
| if (interval) |
| sleep_time = interval; |
| else if (timeout) |
| sleep_time = timeout; |
| else |
| sleep_time = 1000; |
| |
| time_to_sleep = sleep_time; |
| |
| while (!done) { |
| if (forks) |
| child_exited = waitpid(child_pid, &status, WNOHANG); |
| else |
| child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0; |
| |
| if (child_exited) |
| break; |
| |
| clock_gettime(CLOCK_MONOTONIC, &time_start); |
| if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */ |
| if (timeout || handle_interval(interval, times)) |
| break; |
| time_to_sleep = sleep_time; |
| } else { /* fd revent */ |
| process_evlist(evsel_list, interval); |
| clock_gettime(CLOCK_MONOTONIC, &time_stop); |
| compute_tts(&time_start, &time_stop, &time_to_sleep); |
| } |
| } |
| |
| return status; |
| } |
| |
| enum counter_recovery { |
| COUNTER_SKIP, |
| COUNTER_RETRY, |
| COUNTER_FATAL, |
| }; |
| |
| static enum counter_recovery stat_handle_error(struct evsel *counter) |
| { |
| char msg[BUFSIZ]; |
| /* |
| * PPC returns ENXIO for HW counters until 2.6.37 |
| * (behavior changed with commit b0a873e). |
| */ |
| if (errno == EINVAL || errno == ENOSYS || |
| errno == ENOENT || errno == EOPNOTSUPP || |
| errno == ENXIO) { |
| if (verbose > 0) |
| ui__warning("%s event is not supported by the kernel.\n", |
| evsel__name(counter)); |
| counter->supported = false; |
| /* |
| * errored is a sticky flag that means one of the counter's |
| * cpu event had a problem and needs to be reexamined. |
| */ |
| counter->errored = true; |
| |
| if ((evsel__leader(counter) != counter) || |
| !(counter->core.leader->nr_members > 1)) |
| return COUNTER_SKIP; |
| } else if (evsel__fallback(counter, errno, msg, sizeof(msg))) { |
| if (verbose > 0) |
| ui__warning("%s\n", msg); |
| return COUNTER_RETRY; |
| } else if (target__has_per_thread(&target) && |
| evsel_list->core.threads && |
| evsel_list->core.threads->err_thread != -1) { |
| /* |
| * For global --per-thread case, skip current |
| * error thread. |
| */ |
| if (!thread_map__remove(evsel_list->core.threads, |
| evsel_list->core.threads->err_thread)) { |
| evsel_list->core.threads->err_thread = -1; |
| return COUNTER_RETRY; |
| } |
| } |
| |
| evsel__open_strerror(counter, &target, errno, msg, sizeof(msg)); |
| ui__error("%s\n", msg); |
| |
| if (child_pid != -1) |
| kill(child_pid, SIGTERM); |
| return COUNTER_FATAL; |
| } |
| |
| static int __run_perf_stat(int argc, const char **argv, int run_idx) |
| { |
| int interval = stat_config.interval; |
| int times = stat_config.times; |
| int timeout = stat_config.timeout; |
| char msg[BUFSIZ]; |
| unsigned long long t0, t1; |
| struct evsel *counter; |
| size_t l; |
| int status = 0; |
| const bool forks = (argc > 0); |
| bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false; |
| struct affinity affinity; |
| int i, cpu, err; |
| bool second_pass = false; |
| |
| if (forks) { |
| if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) { |
| perror("failed to prepare workload"); |
| return -1; |
| } |
| child_pid = evsel_list->workload.pid; |
| } |
| |
| if (group) |
| evlist__set_leader(evsel_list); |
| |
| if (affinity__setup(&affinity) < 0) |
| return -1; |
| |
| evlist__for_each_entry(evsel_list, counter) { |
| if (bpf_counter__load(counter, &target)) |
| return -1; |
| if (!evsel__is_bpf(counter)) |
| all_counters_use_bpf = false; |
| } |
| |
| evlist__for_each_cpu (evsel_list, i, cpu) { |
| /* |
| * bperf calls evsel__open_per_cpu() in bperf__load(), so |
| * no need to call it again here. |
| */ |
| if (target.use_bpf) |
| break; |
| affinity__set(&affinity, cpu); |
| |
| evlist__for_each_entry(evsel_list, counter) { |
| if (evsel__cpu_iter_skip(counter, cpu)) |
| continue; |
| if (counter->reset_group || counter->errored) |
| continue; |
| if (evsel__is_bpf(counter)) |
| continue; |
| try_again: |
| if (create_perf_stat_counter(counter, &stat_config, &target, |
| counter->cpu_iter - 1) < 0) { |
| |
| /* |
| * Weak group failed. We cannot just undo this here |
| * because earlier CPUs might be in group mode, and the kernel |
| * doesn't support mixing group and non group reads. Defer |
| * it to later. |
| * Don't close here because we're in the wrong affinity. |
| */ |
| if ((errno == EINVAL || errno == EBADF) && |
| evsel__leader(counter) != counter && |
| counter->weak_group) { |
| evlist__reset_weak_group(evsel_list, counter, false); |
| assert(counter->reset_group); |
| second_pass = true; |
| continue; |
| } |
| |
| switch (stat_handle_error(counter)) { |
| case COUNTER_FATAL: |
| return -1; |
| case COUNTER_RETRY: |
| goto try_again; |
| case COUNTER_SKIP: |
| continue; |
| default: |
| break; |
| } |
| |
| } |
| counter->supported = true; |
| } |
| } |
| |
| if (second_pass) { |
| /* |
| * Now redo all the weak group after closing them, |
| * and also close errored counters. |
| */ |
| |
| evlist__for_each_cpu(evsel_list, i, cpu) { |
| affinity__set(&affinity, cpu); |
| /* First close errored or weak retry */ |
| evlist__for_each_entry(evsel_list, counter) { |
| if (!counter->reset_group && !counter->errored) |
| continue; |
| if (evsel__cpu_iter_skip_no_inc(counter, cpu)) |
| continue; |
| perf_evsel__close_cpu(&counter->core, counter->cpu_iter); |
| } |
| /* Now reopen weak */ |
| evlist__for_each_entry(evsel_list, counter) { |
| if (!counter->reset_group && !counter->errored) |
| continue; |
| if (evsel__cpu_iter_skip(counter, cpu)) |
| continue; |
| if (!counter->reset_group) |
| continue; |
| try_again_reset: |
| pr_debug2("reopening weak %s\n", evsel__name(counter)); |
| if (create_perf_stat_counter(counter, &stat_config, &target, |
| counter->cpu_iter - 1) < 0) { |
| |
| switch (stat_handle_error(counter)) { |
| case COUNTER_FATAL: |
| return -1; |
| case COUNTER_RETRY: |
| goto try_again_reset; |
| case COUNTER_SKIP: |
| continue; |
| default: |
| break; |
| } |
| } |
| counter->supported = true; |
| } |
| } |
| } |
| affinity__cleanup(&affinity); |
| |
| evlist__for_each_entry(evsel_list, counter) { |
| if (!counter->supported) { |
| perf_evsel__free_fd(&counter->core); |
| continue; |
| } |
| |
| l = strlen(counter->unit); |
| if (l > stat_config.unit_width) |
| stat_config.unit_width = l; |
| |
| if (evsel__should_store_id(counter) && |
| evsel__store_ids(counter, evsel_list)) |
| return -1; |
| } |
| |
| if (evlist__apply_filters(evsel_list, &counter)) { |
| pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", |
| counter->filter, evsel__name(counter), errno, |
| str_error_r(errno, msg, sizeof(msg))); |
| return -1; |
| } |
| |
| if (STAT_RECORD) { |
| int fd = perf_data__fd(&perf_stat.data); |
| |
| if (is_pipe) { |
| err = perf_header__write_pipe(perf_data__fd(&perf_stat.data)); |
| } else { |
| err = perf_session__write_header(perf_stat.session, evsel_list, |
| fd, false); |
| } |
| |
| if (err < 0) |
| return err; |
| |
| err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list, |
| process_synthesized_event, is_pipe); |
| if (err < 0) |
| return err; |
| } |
| |
| /* |
| * Enable counters and exec the command: |
| */ |
| if (forks) { |
| evlist__start_workload(evsel_list); |
| err = enable_counters(); |
| if (err) |
| return -1; |
| |
| t0 = rdclock(); |
| clock_gettime(CLOCK_MONOTONIC, &ref_time); |
| |
| if (interval || timeout || evlist__ctlfd_initialized(evsel_list)) |
| status = dispatch_events(forks, timeout, interval, ×); |
| if (child_pid != -1) { |
| if (timeout) |
| kill(child_pid, SIGTERM); |
| wait4(child_pid, &status, 0, &stat_config.ru_data); |
| } |
| |
| if (workload_exec_errno) { |
| const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); |
| pr_err("Workload failed: %s\n", emsg); |
| return -1; |
| } |
| |
| if (WIFSIGNALED(status)) |
| psignal(WTERMSIG(status), argv[0]); |
| } else { |
| err = enable_counters(); |
| if (err) |
| return -1; |
| |
| t0 = rdclock(); |
| clock_gettime(CLOCK_MONOTONIC, &ref_time); |
| |
| status = dispatch_events(forks, timeout, interval, ×); |
| } |
| |
| disable_counters(); |
| |
| t1 = rdclock(); |
| |
| if (stat_config.walltime_run_table) |
| stat_config.walltime_run[run_idx] = t1 - t0; |
| |
| if (interval && stat_config.summary) { |
| stat_config.interval = 0; |
| stat_config.stop_read_counter = true; |
| init_stats(&walltime_nsecs_stats); |
| update_stats(&walltime_nsecs_stats, t1 - t0); |
| |
| if (stat_config.aggr_mode == AGGR_GLOBAL) |
| evlist__save_aggr_prev_raw_counts(evsel_list); |
| |
| evlist__copy_prev_raw_counts(evsel_list); |
| evlist__reset_prev_raw_counts(evsel_list); |
| runtime_stat_reset(&stat_config); |
| perf_stat__reset_shadow_per_stat(&rt_stat); |
| } else |
| update_stats(&walltime_nsecs_stats, t1 - t0); |
| |
| /* |
| * Closing a group leader splits the group, and as we only disable |
| * group leaders, results in remaining events becoming enabled. To |
| * avoid arbitrary skew, we must read all counters before closing any |
| * group leaders. |
| */ |
| read_counters(&(struct timespec) { .tv_nsec = t1-t0 }); |
| |
| /* |
| * We need to keep evsel_list alive, because it's processed |
| * later the evsel_list will be closed after. |
| */ |
| if (!STAT_RECORD) |
| evlist__close(evsel_list); |
| |
| return WEXITSTATUS(status); |
| } |
| |
| static int run_perf_stat(int argc, const char **argv, int run_idx) |
| { |
| int ret; |
| |
| if (pre_cmd) { |
| ret = system(pre_cmd); |
| if (ret) |
| return ret; |
| } |
| |
| if (sync_run) |
| sync(); |
| |
| ret = __run_perf_stat(argc, argv, run_idx); |
| if (ret) |
| return ret; |
| |
| if (post_cmd) { |
| ret = system(post_cmd); |
| if (ret) |
| return ret; |
| } |
| |
| return ret; |
| } |
| |
| static void print_counters(struct timespec *ts, int argc, const char **argv) |
| { |
| /* Do not print anything if we record to the pipe. */ |
| if (STAT_RECORD && perf_stat.data.is_pipe) |
| return; |
| if (stat_config.quiet) |
| return; |
| |
| evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv); |
| } |
| |
| static volatile int signr = -1; |
| |
| static void skip_signal(int signo) |
| { |
| if ((child_pid == -1) || stat_config.interval) |
| done = 1; |
| |
| signr = signo; |
| /* |
| * render child_pid harmless |
| * won't send SIGTERM to a random |
| * process in case of race condition |
| * and fast PID recycling |
| */ |
| child_pid = -1; |
| } |
| |
| static void sig_atexit(void) |
| { |
| sigset_t set, oset; |
| |
| /* |
| * avoid race condition with SIGCHLD handler |
| * in skip_signal() which is modifying child_pid |
| * goal is to avoid send SIGTERM to a random |
| * process |
| */ |
| sigemptyset(&set); |
| sigaddset(&set, SIGCHLD); |
| sigprocmask(SIG_BLOCK, &set, &oset); |
| |
| if (child_pid != -1) |
| kill(child_pid, SIGTERM); |
| |
| sigprocmask(SIG_SETMASK, &oset, NULL); |
| |
| if (signr == -1) |
| return; |
| |
| signal(signr, SIG_DFL); |
| kill(getpid(), signr); |
| } |
| |
| void perf_stat__set_big_num(int set) |
| { |
| stat_config.big_num = (set != 0); |
| } |
| |
| void perf_stat__set_no_csv_summary(int set) |
| { |
| stat_config.no_csv_summary = (set != 0); |
| } |
| |
| static int stat__set_big_num(const struct option *opt __maybe_unused, |
| const char *s __maybe_unused, int unset) |
| { |
| big_num_opt = unset ? 0 : 1; |
| perf_stat__set_big_num(!unset); |
| return 0; |
| } |
| |
| static int enable_metric_only(const struct option *opt __maybe_unused, |
| const char *s __maybe_unused, int unset) |
| { |
| force_metric_only = true; |
| stat_config.metric_only = !unset; |
| return 0; |
| } |
| |
| static int parse_metric_groups(const struct option *opt, |
| const char *str, |
| int unset __maybe_unused) |
| { |
| return metricgroup__parse_groups(opt, str, |
| stat_config.metric_no_group, |
| stat_config.metric_no_merge, |
| &stat_config.metric_events); |
| } |
| |
| static int parse_control_option(const struct option *opt, |
| const char *str, |
| int unset __maybe_unused) |
| { |
| struct perf_stat_config *config = opt->value; |
| |
| return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close); |
| } |
| |
| static int parse_stat_cgroups(const struct option *opt, |
| const char *str, int unset) |
| { |
| if (stat_config.cgroup_list) { |
| pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); |
| return -1; |
| } |
| |
| return parse_cgroups(opt, str, unset); |
| } |
| |
| static struct option stat_options[] = { |
| OPT_BOOLEAN('T', "transaction", &transaction_run, |
| "hardware transaction statistics"), |
| OPT_CALLBACK('e', "event", &evsel_list, "event", |
| "event selector. use 'perf list' to list available events", |
| parse_events_option), |
| OPT_CALLBACK(0, "filter", &evsel_list, "filter", |
| "event filter", parse_filter), |
| OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit, |
| "child tasks do not inherit counters"), |
| OPT_STRING('p', "pid", &target.pid, "pid", |
| "stat events on existing process id"), |
| OPT_STRING('t', "tid", &target.tid, "tid", |
| "stat events on existing thread id"), |
| #ifdef HAVE_BPF_SKEL |
| OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id", |
| "stat events on existing bpf program id"), |
| OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf, |
| "use bpf program to count events"), |
| OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path", |
| "path to perf_event_attr map"), |
| #endif |
| OPT_BOOLEAN('a', "all-cpus", &target.system_wide, |
| "system-wide collection from all CPUs"), |
| OPT_BOOLEAN('g', "group", &group, |
| "put the counters into a counter group"), |
| OPT_BOOLEAN(0, "scale", &stat_config.scale, |
| "Use --no-scale to disable counter scaling for multiplexing"), |
| OPT_INCR('v', "verbose", &verbose, |
| "be more verbose (show counter open errors, etc)"), |
| OPT_INTEGER('r', "repeat", &stat_config.run_count, |
| "repeat command and print average + stddev (max: 100, forever: 0)"), |
| OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table, |
| "display details about each run (only with -r option)"), |
| OPT_BOOLEAN('n', "null", &stat_config.null_run, |
| "null run - dont start any counters"), |
| OPT_INCR('d', "detailed", &detailed_run, |
| "detailed run - start a lot of events"), |
| OPT_BOOLEAN('S', "sync", &sync_run, |
| "call sync() before starting a run"), |
| OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
| "print large numbers with thousands\' separators", |
| stat__set_big_num), |
| OPT_STRING('C', "cpu", &target.cpu_list, "cpu", |
| "list of cpus to monitor in system-wide"), |
| OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode, |
| "disable CPU count aggregation", AGGR_NONE), |
| OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"), |
| OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator", |
| "print counts with custom separator"), |
| OPT_CALLBACK('G', "cgroup", &evsel_list, "name", |
| "monitor event in cgroup name only", parse_stat_cgroups), |
| OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name", |
| "expand events for each cgroup"), |
| OPT_STRING('o', "output", &output_name, "file", "output file name"), |
| OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), |
| OPT_INTEGER(0, "log-fd", &output_fd, |
| "log output to fd, instead of stderr"), |
| OPT_STRING(0, "pre", &pre_cmd, "command", |
| "command to run prior to the measured command"), |
| OPT_STRING(0, "post", &post_cmd, "command", |
| "command to run after to the measured command"), |
| OPT_UINTEGER('I', "interval-print", &stat_config.interval, |
| "print counts at regular interval in ms " |
| "(overhead is possible for values <= 100ms)"), |
| OPT_INTEGER(0, "interval-count", &stat_config.times, |
| "print counts for fixed number of times"), |
| OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, |
| "clear screen in between new interval"), |
| OPT_UINTEGER(0, "timeout", &stat_config.timeout, |
| "stop workload and print counts after a timeout period in ms (>= 10ms)"), |
| OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, |
| "aggregate counts per processor socket", AGGR_SOCKET), |
| OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode, |
| "aggregate counts per processor die", AGGR_DIE), |
| OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, |
| "aggregate counts per physical processor core", AGGR_CORE), |
| OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, |
| "aggregate counts per thread", AGGR_THREAD), |
| OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode, |
| "aggregate counts per numa node", AGGR_NODE), |
| OPT_INTEGER('D', "delay", &stat_config.initial_delay, |
| "ms to wait before starting measurement after program start (-1: start with events disabled)"), |
| OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, |
| "Only print computed metrics. No raw values", enable_metric_only), |
| OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group, |
| "don't group metric events, impacts multiplexing"), |
| OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge, |
| "don't try to share events between metrics in a group"), |
| OPT_BOOLEAN(0, "topdown", &topdown_run, |
| "measure top-down statistics"), |
| OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, |
| "Set the metrics level for the top-down statistics (0: max level)"), |
| OPT_BOOLEAN(0, "smi-cost", &smi_cost, |
| "measure SMI cost"), |
| OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", |
| "monitor specified metrics or metric groups (separated by ,)", |
| parse_metric_groups), |
| OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel, |
| "Configure all used events to run in kernel space.", |
| PARSE_OPT_EXCLUSIVE), |
| OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user, |
| "Configure all used events to run in user space.", |
| PARSE_OPT_EXCLUSIVE), |
| OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread, |
| "Use with 'percore' event qualifier to show the event " |
| "counts of one hardware thread by sum up total hardware " |
| "threads of same physical core"), |
| OPT_BOOLEAN(0, "summary", &stat_config.summary, |
| "print summary for interval mode"), |
| OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary, |
| "don't print 'summary' for CSV summary output"), |
| OPT_BOOLEAN(0, "quiet", &stat_config.quiet, |
| "don't print output (useful with record)"), |
| #ifdef HAVE_LIBPFM |
| OPT_CALLBACK(0, "pfm-events", &evsel_list, "event", |
| "libpfm4 event selector. use 'perf list' to list available events", |
| parse_libpfm_events_option), |
| #endif |
| OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", |
| "Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n" |
| "\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" |
| "\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", |
| parse_control_option), |
| OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default", |
| "measure I/O performance metrics provided by arch/platform", |
| iostat_parse), |
| OPT_END() |
| }; |
| |
| static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, |
| struct perf_cpu_map *map, int cpu) |
| { |
| return cpu_map__get_socket(map, cpu, NULL); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused, |
| struct perf_cpu_map *map, int cpu) |
| { |
| return cpu_map__get_die(map, cpu, NULL); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused, |
| struct perf_cpu_map *map, int cpu) |
| { |
| return cpu_map__get_core(map, cpu, NULL); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused, |
| struct perf_cpu_map *map, int cpu) |
| { |
| return cpu_map__get_node(map, cpu, NULL); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config, |
| aggr_get_id_t get_id, struct perf_cpu_map *map, int idx) |
| { |
| int cpu; |
| struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id(); |
| |
| if (idx >= map->nr) |
| return id; |
| |
| cpu = map->map[idx]; |
| |
| if (cpu_map__aggr_cpu_id_is_empty(config->cpus_aggr_map->map[cpu])) |
| config->cpus_aggr_map->map[cpu] = get_id(config, map, idx); |
| |
| id = config->cpus_aggr_map->map[cpu]; |
| return id; |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config, |
| struct perf_cpu_map *map, int idx) |
| { |
| return perf_stat__get_aggr(config, perf_stat__get_socket, map, idx); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config, |
| struct perf_cpu_map *map, int idx) |
| { |
| return perf_stat__get_aggr(config, perf_stat__get_die, map, idx); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config, |
| struct perf_cpu_map *map, int idx) |
| { |
| return perf_stat__get_aggr(config, perf_stat__get_core, map, idx); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config, |
| struct perf_cpu_map *map, int idx) |
| { |
| return perf_stat__get_aggr(config, perf_stat__get_node, map, idx); |
| } |
| |
| static bool term_percore_set(void) |
| { |
| struct evsel *counter; |
| |
| evlist__for_each_entry(evsel_list, counter) { |
| if (counter->percore) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static int perf_stat_init_aggr_mode(void) |
| { |
| int nr; |
| |
| switch (stat_config.aggr_mode) { |
| case AGGR_SOCKET: |
| if (cpu_map__build_socket_map(evsel_list->core.cpus, &stat_config.aggr_map)) { |
| perror("cannot build socket map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_socket_cached; |
| break; |
| case AGGR_DIE: |
| if (cpu_map__build_die_map(evsel_list->core.cpus, &stat_config.aggr_map)) { |
| perror("cannot build die map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_die_cached; |
| break; |
| case AGGR_CORE: |
| if (cpu_map__build_core_map(evsel_list->core.cpus, &stat_config.aggr_map)) { |
| perror("cannot build core map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_core_cached; |
| break; |
| case AGGR_NODE: |
| if (cpu_map__build_node_map(evsel_list->core.cpus, &stat_config.aggr_map)) { |
| perror("cannot build core map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_node_cached; |
| break; |
| case AGGR_NONE: |
| if (term_percore_set()) { |
| if (cpu_map__build_core_map(evsel_list->core.cpus, |
| &stat_config.aggr_map)) { |
| perror("cannot build core map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_core_cached; |
| } |
| break; |
| case AGGR_GLOBAL: |
| case AGGR_THREAD: |
| case AGGR_UNSET: |
| default: |
| break; |
| } |
| |
| /* |
| * The evsel_list->cpus is the base we operate on, |
| * taking the highest cpu number to be the size of |
| * the aggregation translate cpumap. |
| */ |
| nr = perf_cpu_map__max(evsel_list->core.cpus); |
| stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1); |
| return stat_config.cpus_aggr_map ? 0 : -ENOMEM; |
| } |
| |
| static void cpu_aggr_map__delete(struct cpu_aggr_map *map) |
| { |
| if (map) { |
| WARN_ONCE(refcount_read(&map->refcnt) != 0, |
| "cpu_aggr_map refcnt unbalanced\n"); |
| free(map); |
| } |
| } |
| |
| static void cpu_aggr_map__put(struct cpu_aggr_map *map) |
| { |
| if (map && refcount_dec_and_test(&map->refcnt)) |
| cpu_aggr_map__delete(map); |
| } |
| |
| static void perf_stat__exit_aggr_mode(void) |
| { |
| cpu_aggr_map__put(stat_config.aggr_map); |
| cpu_aggr_map__put(stat_config.cpus_aggr_map); |
| stat_config.aggr_map = NULL; |
| stat_config.cpus_aggr_map = NULL; |
| } |
| |
| static inline int perf_env__get_cpu(struct perf_env *env, struct perf_cpu_map *map, int idx) |
| { |
| int cpu; |
| |
| if (idx > map->nr) |
| return -1; |
| |
| cpu = map->map[idx]; |
| |
| if (cpu >= env->nr_cpus_avail) |
| return -1; |
| |
| return cpu; |
| } |
| |
| static struct aggr_cpu_id perf_env__get_socket(struct perf_cpu_map *map, int idx, void *data) |
| { |
| struct perf_env *env = data; |
| int cpu = perf_env__get_cpu(env, map, idx); |
| struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id(); |
| |
| if (cpu != -1) |
| id.socket = env->cpu[cpu].socket_id; |
| |
| return id; |
| } |
| |
| static struct aggr_cpu_id perf_env__get_die(struct perf_cpu_map *map, int idx, void *data) |
| { |
| struct perf_env *env = data; |
| struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id(); |
| int cpu = perf_env__get_cpu(env, map, idx); |
| |
| if (cpu != -1) { |
| /* |
| * die_id is relative to socket, so start |
| * with the socket ID and then add die to |
| * make a unique ID. |
| */ |
| id.socket = env->cpu[cpu].socket_id; |
| id.die = env->cpu[cpu].die_id; |
| } |
| |
| return id; |
| } |
| |
| static struct aggr_cpu_id perf_env__get_core(struct perf_cpu_map *map, int idx, void *data) |
| { |
| struct perf_env *env = data; |
| struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id(); |
| int cpu = perf_env__get_cpu(env, map, idx); |
| |
| if (cpu != -1) { |
| /* |
| * core_id is relative to socket and die, |
| * we need a global id. So we set |
| * socket, die id and core id |
| */ |
| id.socket = env->cpu[cpu].socket_id; |
| id.die = env->cpu[cpu].die_id; |
| id.core = env->cpu[cpu].core_id; |
| } |
| |
| return id; |
| } |
| |
| static struct aggr_cpu_id perf_env__get_node(struct perf_cpu_map *map, int idx, void *data) |
| { |
| int cpu = perf_env__get_cpu(data, map, idx); |
| struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id(); |
| |
| id.node = perf_env__numa_node(data, cpu); |
| return id; |
| } |
| |
| static int perf_env__build_socket_map(struct perf_env *env, struct perf_cpu_map *cpus, |
| struct cpu_aggr_map **sockp) |
| { |
| return cpu_map__build_map(cpus, sockp, perf_env__get_socket, env); |
| } |
| |
| static int perf_env__build_die_map(struct perf_env *env, struct perf_cpu_map *cpus, |
| struct cpu_aggr_map **diep) |
| { |
| return cpu_map__build_map(cpus, diep, perf_env__get_die, env); |
| } |
| |
| static int perf_env__build_core_map(struct perf_env *env, struct perf_cpu_map *cpus, |
| struct cpu_aggr_map **corep) |
| { |
| return cpu_map__build_map(cpus, corep, perf_env__get_core, env); |
| } |
| |
| static int perf_env__build_node_map(struct perf_env *env, struct perf_cpu_map *cpus, |
| struct cpu_aggr_map **nodep) |
| { |
| return cpu_map__build_map(cpus, nodep, perf_env__get_node, env); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, |
| struct perf_cpu_map *map, int idx) |
| { |
| return perf_env__get_socket(map, idx, &perf_stat.session->header.env); |
| } |
| static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, |
| struct perf_cpu_map *map, int idx) |
| { |
| return perf_env__get_die(map, idx, &perf_stat.session->header.env); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, |
| struct perf_cpu_map *map, int idx) |
| { |
| return perf_env__get_core(map, idx, &perf_stat.session->header.env); |
| } |
| |
| static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused, |
| struct perf_cpu_map *map, int idx) |
| { |
| return perf_env__get_node(map, idx, &perf_stat.session->header.env); |
| } |
| |
| static int perf_stat_init_aggr_mode_file(struct perf_stat *st) |
| { |
| struct perf_env *env = &st->session->header.env; |
| |
| switch (stat_config.aggr_mode) { |
| case AGGR_SOCKET: |
| if (perf_env__build_socket_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) { |
| perror("cannot build socket map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_socket_file; |
| break; |
| case AGGR_DIE: |
| if (perf_env__build_die_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) { |
| perror("cannot build die map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_die_file; |
| break; |
| case AGGR_CORE: |
| if (perf_env__build_core_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) { |
| perror("cannot build core map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_core_file; |
| break; |
| case AGGR_NODE: |
| if (perf_env__build_node_map(env, evsel_list->core.cpus, &stat_config.aggr_map)) { |
| perror("cannot build core map"); |
| return -1; |
| } |
| stat_config.aggr_get_id = perf_stat__get_node_file; |
| break; |
| case AGGR_NONE: |
| case AGGR_GLOBAL: |
| case AGGR_THREAD: |
| case AGGR_UNSET: |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Add default attributes, if there were no attributes specified or |
| * if -d/--detailed, -d -d or -d -d -d is used: |
| */ |
| static int add_default_attributes(void) |
| { |
| int err; |
| struct perf_event_attr default_attrs0[] = { |
| |
| { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, |
| { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, |
| { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, |
| { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, |
| |
| { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, |
| }; |
| struct perf_event_attr frontend_attrs[] = { |
| { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, |
| }; |
| struct perf_event_attr backend_attrs[] = { |
| { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, |
| }; |
| struct perf_event_attr default_attrs1[] = { |
| { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, |
| { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, |
| { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, |
| |
| }; |
| struct perf_event_attr default_sw_attrs[] = { |
| { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, |
| { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, |
| { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, |
| { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, |
| }; |
| |
| /* |
| * Detailed stats (-d), covering the L1 and last level data caches: |
| */ |
| struct perf_event_attr detailed_attrs[] = { |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_L1D << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_L1D << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_LL << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_LL << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
| }; |
| |
| /* |
| * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: |
| */ |
| struct perf_event_attr very_detailed_attrs[] = { |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_L1I << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_L1I << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_DTLB << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_DTLB << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_ITLB << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_ITLB << 0 | |
| (PERF_COUNT_HW_CACHE_OP_READ << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
| |
| }; |
| |
| /* |
| * Very, very detailed stats (-d -d -d), adding prefetch events: |
| */ |
| struct perf_event_attr very_very_detailed_attrs[] = { |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_L1D << 0 | |
| (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
| |
| { .type = PERF_TYPE_HW_CACHE, |
| .config = |
| PERF_COUNT_HW_CACHE_L1D << 0 | |
| (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | |
| (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
| }; |
| struct parse_events_error errinfo; |
| |
| /* Set attrs if no event is selected and !null_run: */ |
| if (stat_config.null_run) |
| return 0; |
| |
| bzero(&errinfo, sizeof(errinfo)); |
| if (transaction_run) { |
| /* Handle -T as -M transaction. Once platform specific metrics |
| * support has been added to the json files, all architectures |
| * will use this approach. To determine transaction support |
| * on an architecture test for such a metric name. |
| */ |
| if (metricgroup__has_metric("transaction")) { |
| struct option opt = { .value = &evsel_list }; |
| |
| return metricgroup__parse_groups(&opt, "transaction", |
| stat_config.metric_no_group, |
| stat_config.metric_no_merge, |
| &stat_config.metric_events); |
| } |
| |
| if (pmu_have_event("cpu", "cycles-ct") && |
| pmu_have_event("cpu", "el-start")) |
| err = parse_events(evsel_list, transaction_attrs, |
| &errinfo); |
| else |
| err = parse_events(evsel_list, |
| transaction_limited_attrs, |
| &errinfo); |
| if (err) { |
| fprintf(stderr, "Cannot set up transaction events\n"); |
| parse_events_print_error(&errinfo, transaction_attrs); |
| return -1; |
| } |
| return 0; |
| } |
| |
| if (smi_cost) { |
| int smi; |
| |
| if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { |
| fprintf(stderr, "freeze_on_smi is not supported.\n"); |
| return -1; |
| } |
| |
| if (!smi) { |
| if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { |
| fprintf(stderr, "Failed to set freeze_on_smi.\n"); |
| return -1; |
| } |
| smi_reset = true; |
| } |
| |
| if (pmu_have_event("msr", "aperf") && |
| pmu_have_event("msr", "smi")) { |
| if (!force_metric_only) |
| stat_config.metric_only = true; |
| err = parse_events(evsel_list, smi_cost_attrs, &errinfo); |
| } else { |
| fprintf(stderr, "To measure SMI cost, it needs " |
| "msr/aperf/, msr/smi/ and cpu/cycles/ support\n"); |
| parse_events_print_error(&errinfo, smi_cost_attrs); |
| return -1; |
| } |
| if (err) { |
| parse_events_print_error(&errinfo, smi_cost_attrs); |
| fprintf(stderr, "Cannot set up SMI cost events\n"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| if (topdown_run) { |
| const char **metric_attrs = topdown_metric_attrs; |
| unsigned int max_level = 1; |
| char *str = NULL; |
| bool warn = false; |
| |
| if (!force_metric_only) |
| stat_config.metric_only = true; |
| |
| if (pmu_have_event("cpu", topdown_metric_L2_attrs[5])) { |
| metric_attrs = topdown_metric_L2_attrs; |
| max_level = 2; |
| } |
| |
| if (stat_config.topdown_level > max_level) { |
| pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); |
| return -1; |
| } else if (!stat_config.topdown_level) |
| stat_config.topdown_level = max_level; |
| |
| if (topdown_filter_events(metric_attrs, &str, 1) < 0) { |
| pr_err("Out of memory\n"); |
| return -1; |
| } |
| if (metric_attrs[0] && str) { |
| if (!stat_config.interval && !stat_config.metric_only) { |
| fprintf(stat_config.output, |
| "Topdown accuracy may decrease when measuring long periods.\n" |
| "Please print the result regularly, e.g. -I1000\n"); |
| } |
| goto setup_metrics; |
| } |
| |
| zfree(&str); |
| |
| if (stat_config.aggr_mode != AGGR_GLOBAL && |
| stat_config.aggr_mode != AGGR_CORE) { |
| pr_err("top down event configuration requires --per-core mode\n"); |
| return -1; |
| } |
| stat_config.aggr_mode = AGGR_CORE; |
| if (nr_cgroups || !target__has_cpu(&target)) { |
| pr_err("top down event configuration requires system-wide mode (-a)\n"); |
| return -1; |
| } |
| |
| if (topdown_filter_events(topdown_attrs, &str, |
| arch_topdown_check_group(&warn)) < 0) { |
| pr_err("Out of memory\n"); |
| return -1; |
| } |
| if (topdown_attrs[0] && str) { |
| if (warn) |
| arch_topdown_group_warn(); |
| setup_metrics: |
| err = parse_events(evsel_list, str, &errinfo); |
| if (err) { |
| fprintf(stderr, |
| "Cannot set up top down events %s: %d\n", |
| str, err); |
| parse_events_print_error(&errinfo, str); |
| free(str); |
| return -1; |
| } |
| } else { |
| fprintf(stderr, "System does not support topdown\n"); |
| return -1; |
| } |
| free(str); |
| } |
| |
| if (!evsel_list->core.nr_entries) { |
| if (perf_pmu__has_hybrid()) { |
| const char *hybrid_str = "cycles,instructions,branches,branch-misses"; |
| |
| if (target__has_cpu(&target)) |
| default_sw_attrs[0].config = PERF_COUNT_SW_CPU_CLOCK; |
| |
| if (evlist__add_default_attrs(evsel_list, |
| default_sw_attrs) < 0) { |
| return -1; |
| } |
| |
| err = parse_events(evsel_list, hybrid_str, &errinfo); |
| if (err) { |
| fprintf(stderr, |
| "Cannot set up hybrid events %s: %d\n", |
| hybrid_str, err); |
| parse_events_print_error(&errinfo, hybrid_str); |
| return -1; |
| } |
| return err; |
| } |
| |
| if (target__has_cpu(&target)) |
| default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; |
| |
| if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0) |
| return -1; |
| if (pmu_have_event("cpu", "stalled-cycles-frontend")) { |
| if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0) |
| return -1; |
| } |
| if (pmu_have_event("cpu", "stalled-cycles-backend")) { |
| if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0) |
| return -1; |
| } |
| if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0) |
| return -1; |
| |
| stat_config.topdown_level = TOPDOWN_MAX_LEVEL; |
| if (arch_evlist__add_default_attrs(evsel_list) < 0) |
| return -1; |
| } |
| |
| /* Detailed events get appended to the event list: */ |
| |
| if (detailed_run < 1) |
| return 0; |
| |
| /* Append detailed run extra attributes: */ |
| if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) |
| return -1; |
| |
| if (detailed_run < 2) |
| return 0; |
| |
| /* Append very detailed run extra attributes: */ |
| if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) |
| return -1; |
| |
| if (detailed_run < 3) |
| return 0; |
| |
| /* Append very, very detailed run extra attributes: */ |
| return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); |
| } |
| |
| static const char * const stat_record_usage[] = { |
| "perf stat record [<options>]", |
| NULL, |
| }; |
| |
| static void init_features(struct perf_session *session) |
| { |
| int feat; |
| |
| for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) |
| perf_header__set_feat(&session->header, feat); |
| |
| perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); |
| perf_header__clear_feat(&session->header, HEADER_BUILD_ID); |
| perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
| perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); |
| perf_header__clear_feat(&session->header, HEADER_AUXTRACE); |
| } |
| |
| static int __cmd_record(int argc, const char **argv) |
| { |
| struct perf_session *session; |
| struct perf_data *data = &perf_stat.data; |
| |
| argc = parse_options(argc, argv, stat_options, stat_record_usage, |
| PARSE_OPT_STOP_AT_NON_OPTION); |
| |
| if (output_name) |
| data->path = output_name; |
| |
| if (stat_config.run_count != 1 || forever) { |
| pr_err("Cannot use -r option with perf stat record.\n"); |
| return -1; |
| } |
| |
| session = perf_session__new(data, false, NULL); |
| if (IS_ERR(session)) { |
| pr_err("Perf session creation failed\n"); |
| return PTR_ERR(session); |
| } |
| |
| init_features(session); |
| |
| session->evlist = evsel_list; |
| perf_stat.session = session; |
| perf_stat.record = true; |
| return argc; |
| } |
| |
| static int process_stat_round_event(struct perf_session *session, |
| union perf_event *event) |
| { |
| struct perf_record_stat_round *stat_round = &event->stat_round; |
| struct evsel *counter; |
| struct timespec tsh, *ts = NULL; |
| const char **argv = session->header.env.cmdline_argv; |
| int argc = session->header.env.nr_cmdline; |
| |
| evlist__for_each_entry(evsel_list, counter) |
| perf_stat_process_counter(&stat_config, counter); |
| |
| if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) |
| update_stats(&walltime_nsecs_stats, stat_round->time); |
| |
| if (stat_config.interval && stat_round->time) { |
| tsh.tv_sec = stat_round->time / NSEC_PER_SEC; |
| tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; |
| ts = &tsh; |
| } |
| |
| print_counters(ts, argc, argv); |
| return 0; |
| } |
| |
| static |
| int process_stat_config_event(struct perf_session *session, |
| union perf_event *event) |
| { |
| struct perf_tool *tool = session->tool; |
| struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
| |
| perf_event__read_stat_config(&stat_config, &event->stat_config); |
| |
| if (perf_cpu_map__empty(st->cpus)) { |
| if (st->aggr_mode != AGGR_UNSET) |
| pr_warning("warning: processing task data, aggregation mode not set\n"); |
| return 0; |
| } |
| |
| if (st->aggr_mode != AGGR_UNSET) |
| stat_config.aggr_mode = st->aggr_mode; |
| |
| if (perf_stat.data.is_pipe) |
| perf_stat_init_aggr_mode(); |
| else |
| perf_stat_init_aggr_mode_file(st); |
| |
| return 0; |
| } |
| |
| static int set_maps(struct perf_stat *st) |
| { |
| if (!st->cpus || !st->threads) |
| return 0; |
| |
| if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) |
| return -EINVAL; |
| |
| perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); |
| |
| if (evlist__alloc_stats(evsel_list, true)) |
| return -ENOMEM; |
| |
| st->maps_allocated = true; |
| return 0; |
| } |
| |
| static |
| int process_thread_map_event(struct perf_session *session, |
| union perf_event *event) |
| { |
| struct perf_tool *tool = session->tool; |
| struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
| |
| if (st->threads) { |
| pr_warning("Extra thread map event, ignoring.\n"); |
| return 0; |
| } |
| |
| st->threads = thread_map__new_event(&event->thread_map); |
| if (!st->threads) |
| return -ENOMEM; |
| |
| return set_maps(st); |
| } |
| |
| static |
| int process_cpu_map_event(struct perf_session *session, |
| union perf_event *event) |
| { |
| struct perf_tool *tool = session->tool; |
| struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
| struct perf_cpu_map *cpus; |
| |
| if (st->cpus) { |
| pr_warning("Extra cpu map event, ignoring.\n"); |
| return 0; |
| } |
| |
| cpus = cpu_map__new_data(&event->cpu_map.data); |
| if (!cpus) |
| return -ENOMEM; |
| |
| st->cpus = cpus; |
| return set_maps(st); |
| } |
| |
| static const char * const stat_report_usage[] = { |
| "perf stat report [<options>]", |
| NULL, |
| }; |
| |
| static struct perf_stat perf_stat = { |
| .tool = { |
| .attr = perf_event__process_attr, |
| .event_update = perf_event__process_event_update, |
| .thread_map = process_thread_map_event, |
| .cpu_map = process_cpu_map_event, |
| .stat_config = process_stat_config_event, |
| .stat = perf_event__process_stat_event, |
| .stat_round = process_stat_round_event, |
| }, |
| .aggr_mode = AGGR_UNSET, |
| }; |
| |
| static int __cmd_report(int argc, const char **argv) |
| { |
| struct perf_session *session; |
| const struct option options[] = { |
| OPT_STRING('i', "input", &input_name, "file", "input file name"), |
| OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, |
| "aggregate counts per processor socket", AGGR_SOCKET), |
| OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, |
| "aggregate counts per processor die", AGGR_DIE), |
| OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, |
| "aggregate counts per physical processor core", AGGR_CORE), |
| OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode, |
| "aggregate counts per numa node", AGGR_NODE), |
| OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, |
| "disable CPU count aggregation", AGGR_NONE), |
| OPT_END() |
| }; |
| struct stat st; |
| int ret; |
| |
| argc = parse_options(argc, argv, options, stat_report_usage, 0); |
| |
| if (!input_name || !strlen(input_name)) { |
| if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) |
| input_name = "-"; |
| else |
| input_name = "perf.data"; |
| } |
| |
| perf_stat.data.path = input_name; |
| perf_stat.data.mode = PERF_DATA_MODE_READ; |
| |
| session = perf_session__new(&perf_stat.data, false, &perf_stat.tool); |
| if (IS_ERR(session)) |
| return PTR_ERR(session); |
| |
| perf_stat.session = session; |
| stat_config.output = stderr; |
| evsel_list = session->evlist; |
| |
| ret = perf_session__process_events(session); |
| if (ret) |
| return ret; |
| |
| perf_session__delete(session); |
| return 0; |
| } |
| |
| static void setup_system_wide(int forks) |
| { |
| /* |
| * Make system wide (-a) the default target if |
| * no target was specified and one of following |
| * conditions is met: |
| * |
| * - there's no workload specified |
| * - there is workload specified but all requested |
| * events are system wide events |
| */ |
| if (!target__none(&target)) |
| return; |
| |
| if (!forks) |
| target.system_wide = true; |
| else { |
| struct evsel *counter; |
| |
| evlist__for_each_entry(evsel_list, counter) { |
| if (!counter->core.system_wide && |
| strcmp(counter->name, "duration_time")) { |
| return; |
| } |
| } |
| |
| if (evsel_list->core.nr_entries) |
| target.system_wide = true; |
| } |
| } |
| |
| int cmd_stat(int argc, const char **argv) |
| { |
| const char * const stat_usage[] = { |
| "perf stat [<options>] [<command>]", |
| NULL |
| }; |
| int status = -EINVAL, run_idx, err; |
| const char *mode; |
| FILE *output = stderr; |
| unsigned int interval, timeout; |
| const char * const stat_subcommands[] = { "record", "report" }; |
| char errbuf[BUFSIZ]; |
| |
| setlocale(LC_ALL, ""); |
| |
| evsel_list = evlist__new(); |
| if (evsel_list == NULL) |
| return -ENOMEM; |
| |
| parse_events__shrink_config_terms(); |
| |
| /* String-parsing callback-based options would segfault when negated */ |
| set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); |
| set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); |
| set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); |
| |
| argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, |
| (const char **) stat_usage, |
| PARSE_OPT_STOP_AT_NON_OPTION); |
| perf_stat__collect_metric_expr(evsel_list); |
| perf_stat__init_shadow_stats(); |
| |
| if (stat_config.csv_sep) { |
| stat_config.csv_output = true; |
| if (!strcmp(stat_config.csv_sep, "\\t")) |
| stat_config.csv_sep = "\t"; |
| } else |
| stat_config.csv_sep = DEFAULT_SEPARATOR; |
| |
| if (argc && !strncmp(argv[0], "rec", 3)) { |
| argc = __cmd_record(argc, argv); |
| if (argc < 0) |
| return -1; |
| } else if (argc && !strncmp(argv[0], "rep", 3)) |
| return __cmd_report(argc, argv); |
| |
| interval = stat_config.interval; |
| timeout = stat_config.timeout; |
| |
| /* |
| * For record command the -o is already taken care of. |
| */ |
| if (!STAT_RECORD && output_name && strcmp(output_name, "-")) |
| output = NULL; |
| |
| if (output_name && output_fd) { |
| fprintf(stderr, "cannot use both --output and --log-fd\n"); |
| parse_options_usage(stat_usage, stat_options, "o", 1); |
| parse_options_usage(NULL, stat_options, "log-fd", 0); |
| goto out; |
| } |
| |
| if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { |
| fprintf(stderr, "--metric-only is not supported with --per-thread\n"); |
| goto out; |
| } |
| |
| if (stat_config.metric_only && stat_config.run_count > 1) { |
| fprintf(stderr, "--metric-only is not supported with -r\n"); |
| goto out; |
| } |
| |
| if (stat_config.walltime_run_table && stat_config.run_count <= 1) { |
| fprintf(stderr, "--table is only supported with -r\n"); |
| parse_options_usage(stat_usage, stat_options, "r", 1); |
| parse_options_usage(NULL, stat_options, "table", 0); |
| goto out; |
| } |
| |
| if (output_fd < 0) { |
| fprintf(stderr, "argument to --log-fd must be a > 0\n"); |
| parse_options_usage(stat_usage, stat_options, "log-fd", 0); |
| goto out; |
| } |
| |
| if (!output && !stat_config.quiet) { |
| struct timespec tm; |
| mode = append_file ? "a" : "w"; |
| |
| output = fopen(output_name, mode); |
| if (!output) { |
| perror("failed to create output file"); |
| return -1; |
| } |
| clock_gettime(CLOCK_REALTIME, &tm); |
| fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); |
| } else if (output_fd > 0) { |
| mode = append_file ? "a" : "w"; |
| output = fdopen(output_fd, mode); |
| if (!output) { |
| perror("Failed opening logfd"); |
| return -errno; |
| } |
| } |
| |
| stat_config.output = output; |
| |
| /* |
| * let the spreadsheet do the pretty-printing |
| */ |
| if (stat_config.csv_output) { |
| /* User explicitly passed -B? */ |
| if (big_num_opt == 1) { |
| fprintf(stderr, "-B option not supported with -x\n"); |
| parse_options_usage(stat_usage, stat_options, "B", 1); |
| parse_options_usage(NULL, stat_options, "x", 1); |
| goto out; |
| } else /* Nope, so disable big number formatting */ |
| stat_config.big_num = false; |
| } else if (big_num_opt == 0) /* User passed --no-big-num */ |
| stat_config.big_num = false; |
| |
| err = target__validate(&target); |
| if (err) { |
| target__strerror(&target, err, errbuf, BUFSIZ); |
| pr_warning("%s\n", errbuf); |
| } |
| |
| setup_system_wide(argc); |
| |
| /* |
| * Display user/system times only for single |
| * run and when there's specified tracee. |
| */ |
| if ((stat_config.run_count == 1) && target__none(&target)) |
| stat_config.ru_display = true; |
| |
| if (stat_config.run_count < 0) { |
| pr_err("Run count must be a positive number\n"); |
| parse_options_usage(stat_usage, stat_options, "r", 1); |
| goto out; |
| } else if (stat_config.run_count == 0) { |
| forever = true; |
| stat_config.run_count = 1; |
| } |
| |
| if (stat_config.walltime_run_table) { |
| stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); |
| if (!stat_config.walltime_run) { |
| pr_err("failed to setup -r option"); |
| goto out; |
| } |
| } |
| |
| if ((stat_config.aggr_mode == AGGR_THREAD) && |
| !target__has_task(&target)) { |
| if (!target.system_wide || target.cpu_list) { |
| fprintf(stderr, "The --per-thread option is only " |
| "available when monitoring via -p -t -a " |
| "options or only --per-thread.\n"); |
| parse_options_usage(NULL, stat_options, "p", 1); |
| parse_options_usage(NULL, stat_options, "t", 1); |
| goto out; |
| } |
| } |
| |
| /* |
| * no_aggr, cgroup are for system-wide only |
| * --per-thread is aggregated per thread, we dont mix it with cpu mode |
| */ |
| if (((stat_config.aggr_mode != AGGR_GLOBAL && |
| stat_config.aggr_mode != AGGR_THREAD) || nr_cgroups) && |
| !target__has_cpu(&target)) { |
| fprintf(stderr, "both cgroup and no-aggregation " |
| "modes only available in system-wide mode\n"); |
| |
| parse_options_usage(stat_usage, stat_options, "G", 1); |
| parse_options_usage(NULL, stat_options, "A", 1); |
| parse_options_usage(NULL, stat_options, "a", 1); |
| goto out; |
| } |
| |
| if (stat_config.iostat_run) { |
| status = iostat_prepare(evsel_list, &stat_config); |
| if (status) |
| goto out; |
| if (iostat_mode == IOSTAT_LIST) { |
| iostat_list(evsel_list, &stat_config); |
| goto out; |
| } else if (verbose) |
| iostat_list(evsel_list, &stat_config); |
| } |
| |
| if (add_default_attributes()) |
| goto out; |
| |
| if (stat_config.cgroup_list) { |
| if (nr_cgroups > 0) { |
| pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); |
| parse_options_usage(stat_usage, stat_options, "G", 1); |
| parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); |
| goto out; |
| } |
| |
| if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, |
| &stat_config.metric_events, true) < 0) { |
| parse_options_usage(stat_usage, stat_options, |
| "for-each-cgroup", 0); |
| goto out; |
| } |
| } |
| |
| if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) |
| target.per_thread = true; |
| |
| if (evlist__create_maps(evsel_list, &target) < 0) { |
| if (target__has_task(&target)) { |
| pr_err("Problems finding threads of monitor\n"); |
| parse_options_usage(stat_usage, stat_options, "p", 1); |
| parse_options_usage(NULL, stat_options, "t", 1); |
| } else if (target__has_cpu(&target)) { |
| perror("failed to parse CPUs map"); |
| parse_options_usage(stat_usage, stat_options, "C", 1); |
| parse_options_usage(NULL, stat_options, "a", 1); |
| } |
| goto out; |
| } |
| |
| evlist__check_cpu_maps(evsel_list); |
| |
| /* |
| * Initialize thread_map with comm names, |
| * so we could print it out on output. |
| */ |
| if (stat_config.aggr_mode == AGGR_THREAD) { |
| thread_map__read_comms(evsel_list->core.threads); |
| if (target.system_wide) { |
| if (runtime_stat_new(&stat_config, |
| perf_thread_map__nr(evsel_list->core.threads))) { |
| goto out; |
| } |
| } |
| } |
| |
| if (stat_config.aggr_mode == AGGR_NODE) |
| cpu__setup_cpunode_map(); |
| |
| if (stat_config.times && interval) |
| interval_count = true; |
| else if (stat_config.times && !interval) { |
| pr_err("interval-count option should be used together with " |
| "interval-print.\n"); |
| parse_options_usage(stat_usage, stat_options, "interval-count", 0); |
| parse_options_usage(stat_usage, stat_options, "I", 1); |
| goto out; |
| } |
| |
| if (timeout && timeout < 100) { |
| if (timeout < 10) { |
| pr_err("timeout must be >= 10ms.\n"); |
| parse_options_usage(stat_usage, stat_options, "timeout", 0); |
| goto out; |
| } else |
| pr_warning("timeout < 100ms. " |
| "The overhead percentage could be high in some cases. " |
| "Please proceed with caution.\n"); |
| } |
| if (timeout && interval) { |
| pr_err("timeout option is not supported with interval-print.\n"); |
| parse_options_usage(stat_usage, stat_options, "timeout", 0); |
| parse_options_usage(stat_usage, stat_options, "I", 1); |
| goto out; |
| } |
| |
| if (evlist__alloc_stats(evsel_list, interval)) |
| goto out; |
| |
| if (perf_stat_init_aggr_mode()) |
| goto out; |
| |
| /* |
| * Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless |
| * while avoiding that older tools show confusing messages. |
| * |
| * However for pipe sessions we need to keep it zero, |
| * because script's perf_evsel__check_attr is triggered |
| * by attr->sample_type != 0, and we can't run it on |
| * stat sessions. |
| */ |
| stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); |
| |
| /* |
| * We dont want to block the signals - that would cause |
| * child tasks to inherit that and Ctrl-C would not work. |
| * What we want is for Ctrl-C to work in the exec()-ed |
| * task, but being ignored by perf stat itself: |
| */ |
| atexit(sig_atexit); |
| if (!forever) |
| signal(SIGINT, skip_signal); |
| signal(SIGCHLD, skip_signal); |
| signal(SIGALRM, skip_signal); |
| signal(SIGABRT, skip_signal); |
| |
| if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack)) |
| goto out; |
| |
| status = 0; |
| for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { |
| if (stat_config.run_count != 1 && verbose > 0) |
| fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
| run_idx + 1); |
| |
| if (run_idx != 0) |
| evlist__reset_prev_raw_counts(evsel_list); |
| |
| status = run_perf_stat(argc, argv, run_idx); |
| if (forever && status != -1 && !interval) { |
| print_counters(NULL, argc, argv); |
| perf_stat__reset_stats(); |
| } |
| } |
| |
| if (!forever && status != -1 && (!interval || stat_config.summary)) |
| print_counters(NULL, argc, argv); |
| |
| evlist__finalize_ctlfd(evsel_list); |
| |
| if (STAT_RECORD) { |
| /* |
| * We synthesize the kernel mmap record just so that older tools |
| * don't emit warnings about not being able to resolve symbols |
| * due to /proc/sys/kernel/kptr_restrict settings and instead provide |
| * a saner message about no samples being in the perf.data file. |
| * |
| * This also serves to suppress a warning about f_header.data.size == 0 |
| * in header.c at the moment 'perf stat record' gets introduced, which |
| * is not really needed once we start adding the stat specific PERF_RECORD_ |
| * records, but the need to suppress the kptr_restrict messages in older |
| * tools remain -acme |
| */ |
| int fd = perf_data__fd(&perf_stat.data); |
| |
| err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, |
| process_synthesized_event, |
| &perf_stat.session->machines.host); |
| if (err) { |
| pr_warning("Couldn't synthesize the kernel mmap record, harmless, " |
| "older tools may produce warnings about this file\n."); |
| } |
| |
| if (!interval) { |
| if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) |
| pr_err("failed to write stat round event\n"); |
| } |
| |
| if (!perf_stat.data.is_pipe) { |
| perf_stat.session->header.data_size += perf_stat.bytes_written; |
| perf_session__write_header(perf_stat.session, evsel_list, fd, true); |
| } |
| |
| evlist__close(evsel_list); |
| perf_session__delete(perf_stat.session); |
| } |
| |
| perf_stat__exit_aggr_mode(); |
| evlist__free_stats(evsel_list); |
| out: |
| if (stat_config.iostat_run) |
| iostat_release(evsel_list); |
| |
| zfree(&stat_config.walltime_run); |
| |
| if (smi_cost && smi_reset) |
| sysfs__write_int(FREEZE_ON_SMI_PATH, 0); |
| |
| evlist__delete(evsel_list); |
| |
| metricgroup__rblist_exit(&stat_config.metric_events); |
| runtime_stat_delete(&stat_config); |
| evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close); |
| |
| return status; |
| } |