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-rw-r--r--tools/perf/builtin-stat.c2411
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diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
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+// 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/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 "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 *smi_cost_attrs = {
+ "{"
+ "msr/aperf/,"
+ "msr/smi/,"
+ "cycles"
+ "}"
+};
+
+static struct evlist *evsel_list;
+
+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
+};
+
+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];
+
+ evlist__for_each_entry(evlist, evsel) {
+ leader = evsel->leader;
+
+ /* 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) {
+ pos->leader = pos;
+ pos->core.nr_members = 0;
+ }
+ evsel->leader->core.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;
+
+ perf_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 (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 (!counter->err) {
+ counter->err = read_counter_cpu(counter, rs,
+ counter->cpu_iter - 1);
+ }
+ }
+ }
+ affinity__cleanup(&affinity);
+ return 0;
+}
+
+static void read_counters(struct timespec *rs)
+{
+ struct evsel *counter;
+
+ if (!stat_config.stop_read_counter && (read_affinity_counters(rs) < 0))
+ 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 void enable_counters(void)
+{
+ if (stat_config.initial_delay < 0) {
+ pr_info(EVLIST_DISABLED_MSG);
+ return;
+ }
+
+ 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) {
+ evlist__enable(evsel_list);
+ if (stat_config.initial_delay > 0)
+ pr_info(EVLIST_ENABLED_MSG);
+ }
+}
+
+static void disable_counters(void)
+{
+ /*
+ * 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__disable(evsel_list);
+}
+
+static volatile int workload_exec_errno;
+
+/*
+ * perf_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:
+ pr_info(EVLIST_ENABLED_MSG);
+ if (interval)
+ process_interval();
+ break;
+ case EVLIST_CTL_CMD_DISABLE:
+ if (interval)
+ process_interval();
+ pr_info(EVLIST_DISABLED_MSG);
+ break;
+ case EVLIST_CTL_CMD_SNAPSHOT:
+ case EVLIST_CTL_CMD_ACK:
+ case EVLIST_CTL_CMD_UNSUPPORTED:
+ 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 ((counter->leader != counter) ||
+ !(counter->leader->core.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;
+ bool second_pass = false;
+
+ if (forks) {
+ if (perf_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)
+ perf_evlist__set_leader(evsel_list);
+
+ if (affinity__setup(&affinity) < 0)
+ return -1;
+
+ evlist__for_each_cpu (evsel_list, i, cpu) {
+ 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;
+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) &&
+ counter->leader != counter &&
+ counter->weak_group) {
+ perf_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 (perf_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 err, 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:
+ */
+ t0 = rdclock();
+ clock_gettime(CLOCK_MONOTONIC, &ref_time);
+
+ if (forks) {
+ perf_evlist__start_workload(evsel_list);
+ enable_counters();
+
+ if (interval || timeout || evlist__ctlfd_initialized(evsel_list))
+ status = dispatch_events(forks, timeout, interval, &times);
+ 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 {
+ enable_counters();
+ status = dispatch_events(forks, timeout, interval, &times);
+ }
+
+ 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)
+ perf_evlist__save_aggr_prev_raw_counts(evsel_list);
+
+ perf_evlist__copy_prev_raw_counts(evsel_list);
+ perf_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;
+
+ perf_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);
+}
+
+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"),
+ 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 topdown level 1 statistics"),
+ 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"),
+#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_END()
+};
+
+static int 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 int 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 int 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 int 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 int perf_stat__get_aggr(struct perf_stat_config *config,
+ aggr_get_id_t get_id, struct perf_cpu_map *map, int idx)
+{
+ int cpu;
+
+ if (idx >= map->nr)
+ return -1;
+
+ cpu = map->map[idx];
+
+ if (config->cpus_aggr_map->map[cpu] == -1)
+ config->cpus_aggr_map->map[cpu] = get_id(config, map, idx);
+
+ return config->cpus_aggr_map->map[cpu];
+}
+
+static int 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 int 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 int 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 int 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 = perf_cpu_map__empty_new(nr + 1);
+ return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
+}
+
+static void perf_stat__exit_aggr_mode(void)
+{
+ perf_cpu_map__put(stat_config.aggr_map);
+ perf_cpu_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 int 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);
+
+ return cpu == -1 ? -1 : env->cpu[cpu].socket_id;
+}
+
+static int perf_env__get_die(struct perf_cpu_map *map, int idx, void *data)
+{
+ struct perf_env *env = data;
+ int die_id = -1, cpu = perf_env__get_cpu(env, map, idx);
+
+ if (cpu != -1) {
+ /*
+ * Encode socket in bit range 15:8
+ * die_id is relative to socket,
+ * we need a global id. So we combine
+ * socket + die id
+ */
+ if (WARN_ONCE(env->cpu[cpu].socket_id >> 8, "The socket id number is too big.\n"))
+ return -1;
+
+ if (WARN_ONCE(env->cpu[cpu].die_id >> 8, "The die id number is too big.\n"))
+ return -1;
+
+ die_id = (env->cpu[cpu].socket_id << 8) | (env->cpu[cpu].die_id & 0xff);
+ }
+
+ return die_id;
+}
+
+static int perf_env__get_core(struct perf_cpu_map *map, int idx, void *data)
+{
+ struct perf_env *env = data;
+ int core = -1, cpu = perf_env__get_cpu(env, map, idx);
+
+ if (cpu != -1) {
+ /*
+ * Encode socket in bit range 31:24
+ * encode die id in bit range 23:16
+ * core_id is relative to socket and die,
+ * we need a global id. So we combine
+ * socket + die id + core id
+ */
+ if (WARN_ONCE(env->cpu[cpu].socket_id >> 8, "The socket id number is too big.\n"))
+ return -1;
+
+ if (WARN_ONCE(env->cpu[cpu].die_id >> 8, "The die id number is too big.\n"))
+ return -1;
+
+ if (WARN_ONCE(env->cpu[cpu].core_id >> 16, "The core id number is too big.\n"))
+ return -1;
+
+ core = (env->cpu[cpu].socket_id << 24) |
+ (env->cpu[cpu].die_id << 16) |
+ (env->cpu[cpu].core_id & 0xffff);
+ }
+
+ return core;
+}
+
+static int perf_env__get_node(struct perf_cpu_map *map, int idx, void *data)
+{
+ int cpu = perf_env__get_cpu(data, map, idx);
+
+ return perf_env__numa_node(data, cpu);
+}
+
+static int perf_env__build_socket_map(struct perf_env *env, struct perf_cpu_map *cpus,
+ struct perf_cpu_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 perf_cpu_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 perf_cpu_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 perf_cpu_map **nodep)
+{
+ return cpu_map__build_map(cpus, nodep, perf_env__get_node, env);
+}
+
+static int 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 int 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 int 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 int 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 },
+
+};
+
+/*
+ * 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 archictures
+ * 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) {
+ char *str = NULL;
+ bool warn = false;
+
+ if (!force_metric_only)
+ stat_config.metric_only = true;
+
+ if (topdown_filter_events(topdown_metric_attrs, &str, 1) < 0) {
+ pr_err("Out of memory\n");
+ return -1;
+ }
+ if (topdown_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 (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;
+ }
+
+ /* 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 (perf_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;
+ const char *mode;
+ FILE *output = stderr;
+ unsigned int interval, timeout;
+ const char * const stat_subcommands[] = { "record", "report" };
+
+ 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) {
+ 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;
+
+ 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 (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)
+ goto out;
+ }
+
+ target__validate(&target);
+
+ if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
+ target.per_thread = true;
+
+ if (perf_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 (perf_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)
+ perf_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 instear 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);
+ int 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();
+ perf_evlist__free_stats(evsel_list);
+out:
+ 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;
+}