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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /tools/perf/builtin-stat.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/builtin-stat.c')
-rw-r--r--tools/perf/builtin-stat.c2901
1 files changed, 2901 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
new file mode 100644
index 0000000000..78c1049221
--- /dev/null
+++ b/tools/perf/builtin-stat.c
@@ -0,0 +1,2901 @@
+// 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 "util/cgroup.h"
+#include <subcmd/parse-options.h>
+#include "util/parse-events.h"
+#include "util/pmus.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 "util/bpf_counter.h"
+#include "util/iostat.h"
+#include "util/util.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>
+#include <internal/threadmap.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);
+
+static struct evlist *evsel_list;
+static struct parse_events_option_args parse_events_option_args = {
+ .evlistp = &evsel_list,
+};
+
+static bool all_counters_use_bpf = true;
+
+static struct target target = {
+ .uid = UINT_MAX,
+};
+
+#define METRIC_ONLY_LEN 20
+
+static volatile sig_atomic_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 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;
+static char *metrics;
+
+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;
+ u32 aggr_level;
+};
+
+static struct perf_stat perf_stat;
+#define STAT_RECORD perf_stat.record
+
+static volatile sig_atomic_t done = 0;
+
+static struct perf_stat_config stat_config = {
+ .aggr_mode = AGGR_GLOBAL,
+ .aggr_level = MAX_CACHE_LVL + 1,
+ .scale = true,
+ .unit_width = 4, /* strlen("unit") */
+ .run_count = 1,
+ .metric_only_len = METRIC_ONLY_LEN,
+ .walltime_nsecs_stats = &walltime_nsecs_stats,
+ .ru_stats = &ru_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 (perf_cpu_map__nr(a->core.cpus) != perf_cpu_map__nr(b->core.cpus))
+ return false;
+
+ for (int i = 0; i < perf_cpu_map__nr(a->core.cpus); i++) {
+ if (perf_cpu_map__cpu(a->core.cpus, i).cpu !=
+ perf_cpu_map__cpu(b->core.cpus, i).cpu)
+ return false;
+ }
+
+ return true;
+}
+
+static void evlist__check_cpu_maps(struct evlist *evlist)
+{
+ struct evsel *evsel, *warned_leader = NULL;
+
+ evlist__for_each_entry(evlist, evsel) {
+ struct 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. */
+ if (warned_leader != leader) {
+ char buf[200];
+
+ pr_warning("WARNING: grouped events cpus do not match.\n"
+ "Events with CPUs not matching the leader will "
+ "be removed from the group.\n");
+ evsel__group_desc(leader, buf, sizeof(buf));
+ pr_warning(" %s\n", buf);
+ warned_leader = leader;
+ }
+ if (verbose > 0) {
+ char buf[200];
+
+ 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);
+ }
+
+ evsel__remove_from_group(evsel, leader);
+ }
+}
+
+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)
+{
+ evlist__reset_stats(evsel_list);
+ perf_stat__reset_shadow_stats();
+}
+
+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, int cpu_map_idx, u32 thread,
+ struct perf_counts_values *count)
+{
+ struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread);
+ struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx);
+
+ 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_map_idx,
+ int thread, struct timespec *rs)
+{
+ switch(counter->tool_event) {
+ case PERF_TOOL_DURATION_TIME: {
+ u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL;
+ struct perf_counts_values *count =
+ perf_counts(counter->counts, cpu_map_idx, thread);
+ count->ena = count->run = val;
+ count->val = val;
+ return 0;
+ }
+ case PERF_TOOL_USER_TIME:
+ case PERF_TOOL_SYSTEM_TIME: {
+ u64 val;
+ struct perf_counts_values *count =
+ perf_counts(counter->counts, cpu_map_idx, thread);
+ if (counter->tool_event == PERF_TOOL_USER_TIME)
+ val = ru_stats.ru_utime_usec_stat.mean;
+ else
+ val = ru_stats.ru_stime_usec_stat.mean;
+ count->ena = count->run = val;
+ count->val = val;
+ return 0;
+ }
+ default:
+ case PERF_TOOL_NONE:
+ return evsel__read_counter(counter, cpu_map_idx, thread);
+ case PERF_TOOL_MAX:
+ /* This should never be reached */
+ return 0;
+ }
+}
+
+/*
+ * 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_map_idx)
+{
+ int nthreads = perf_thread_map__nr(evsel_list->core.threads);
+ int thread;
+
+ if (!counter->supported)
+ return -ENOENT;
+
+ for (thread = 0; thread < nthreads; thread++) {
+ struct perf_counts_values *count;
+
+ count = perf_counts(counter->counts, cpu_map_idx, 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_map_idx, thread) &&
+ read_single_counter(counter, cpu_map_idx, thread, rs)) {
+ counter->counts->scaled = -1;
+ perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0;
+ perf_counts(counter->counts, cpu_map_idx, thread)->run = 0;
+ return -1;
+ }
+
+ perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false);
+
+ if (STAT_RECORD) {
+ if (evsel__write_stat_event(counter, cpu_map_idx, 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),
+ perf_cpu_map__cpu(evsel__cpus(counter),
+ cpu_map_idx).cpu,
+ count->val, count->ena, count->run);
+ }
+ }
+
+ return 0;
+}
+
+static int read_affinity_counters(struct timespec *rs)
+{
+ struct evlist_cpu_iterator evlist_cpu_itr;
+ struct affinity saved_affinity, *affinity;
+
+ if (all_counters_use_bpf)
+ return 0;
+
+ if (!target__has_cpu(&target) || target__has_per_thread(&target))
+ affinity = NULL;
+ else if (affinity__setup(&saved_affinity) < 0)
+ return -1;
+ else
+ affinity = &saved_affinity;
+
+ evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
+ struct evsel *counter = evlist_cpu_itr.evsel;
+
+ if (evsel__is_bpf(counter))
+ continue;
+
+ if (!counter->err) {
+ counter->err = read_counter_cpu(counter, rs,
+ evlist_cpu_itr.cpu_map_idx);
+ }
+ }
+ if (affinity)
+ affinity__cleanup(&saved_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 int read_counters(struct timespec *rs)
+{
+ if (!stat_config.stop_read_counter) {
+ if (read_bpf_map_counters() ||
+ read_affinity_counters(rs))
+ return -1;
+ }
+ return 0;
+}
+
+static void process_counters(void)
+{
+ struct evsel *counter;
+
+ 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;
+ }
+
+ perf_stat_merge_counters(&stat_config, evsel_list);
+ perf_stat_process_percore(&stat_config, evsel_list);
+}
+
+static void process_interval(void)
+{
+ struct timespec ts, rs;
+
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ diff_timespec(&rs, &ts, &ref_time);
+
+ evlist__reset_aggr_stats(evsel_list);
+
+ if (read_counters(&rs) == 0)
+ process_counters();
+
+ 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 (!target__enable_on_exec(&target)) {
+ if (!all_counters_use_bpf)
+ evlist__enable(evsel_list);
+ }
+ 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 sig_atomic_t 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:
+ fallthrough;
+ 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;
+ }
+ } else if (counter->skippable) {
+ if (verbose > 0)
+ ui__warning("skipping event %s that kernel failed to open .\n",
+ evsel__name(counter));
+ counter->supported = false;
+ counter->errored = true;
+ return COUNTER_SKIP;
+ }
+
+ 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 evlist_cpu_iterator evlist_cpu_itr;
+ struct affinity saved_affinity, *affinity = NULL;
+ int 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 (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) {
+ if (affinity__setup(&saved_affinity) < 0)
+ return -1;
+ affinity = &saved_affinity;
+ }
+
+ evlist__for_each_entry(evsel_list, counter) {
+ counter->reset_group = false;
+ if (bpf_counter__load(counter, &target))
+ return -1;
+ if (!(evsel__is_bperf(counter)))
+ all_counters_use_bpf = false;
+ }
+
+ evlist__reset_aggr_stats(evsel_list);
+
+ evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
+ counter = evlist_cpu_itr.evsel;
+
+ /*
+ * bperf calls evsel__open_per_cpu() in bperf__load(), so
+ * no need to call it again here.
+ */
+ if (target.use_bpf)
+ break;
+
+ if (counter->reset_group || counter->errored)
+ continue;
+ if (evsel__is_bperf(counter))
+ continue;
+try_again:
+ if (create_perf_stat_counter(counter, &stat_config, &target,
+ evlist_cpu_itr.cpu_map_idx) < 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.
+ */
+
+ /* First close errored or weak retry */
+ evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
+ counter = evlist_cpu_itr.evsel;
+
+ if (!counter->reset_group && !counter->errored)
+ continue;
+
+ perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx);
+ }
+ /* Now reopen weak */
+ evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) {
+ counter = evlist_cpu_itr.evsel;
+
+ 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,
+ evlist_cpu_itr.cpu_map_idx) < 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;
+ }
+
+ if (target.initial_delay) {
+ pr_info(EVLIST_DISABLED_MSG);
+ } else {
+ err = enable_counters();
+ if (err)
+ return -1;
+ }
+
+ /* Exec the command, if any */
+ if (forks)
+ evlist__start_workload(evsel_list);
+
+ if (target.initial_delay > 0) {
+ usleep(target.initial_delay * USEC_PER_MSEC);
+ err = enable_counters();
+ if (err)
+ return -1;
+
+ pr_info(EVLIST_ENABLED_MSG);
+ }
+
+ t0 = rdclock();
+ clock_gettime(CLOCK_MONOTONIC, &ref_time);
+
+ if (forks) {
+ 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 {
+ 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);
+
+ evlist__copy_prev_raw_counts(evsel_list);
+ evlist__reset_prev_raw_counts(evsel_list);
+ evlist__reset_aggr_stats(evsel_list);
+ } else {
+ update_stats(&walltime_nsecs_stats, t1 - t0);
+ update_rusage_stats(&ru_stats, &stat_config.ru_data);
+ }
+
+ /*
+ * 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.
+ */
+ if (read_counters(&(struct timespec) { .tv_nsec = t1-t0 }) == 0)
+ process_counters();
+
+ /*
+ * 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 (quiet)
+ return;
+
+ evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv);
+}
+
+static volatile sig_atomic_t 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 append_metric_groups(const struct option *opt __maybe_unused,
+ const char *str,
+ int unset __maybe_unused)
+{
+ if (metrics) {
+ char *tmp;
+
+ if (asprintf(&tmp, "%s,%s", metrics, str) < 0)
+ return -ENOMEM;
+ free(metrics);
+ metrics = tmp;
+ } else {
+ metrics = strdup(str);
+ if (!metrics)
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+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 int parse_cputype(const struct option *opt,
+ const char *str,
+ int unset __maybe_unused)
+{
+ const struct perf_pmu *pmu;
+ struct evlist *evlist = *(struct evlist **)opt->value;
+
+ if (!list_empty(&evlist->core.entries)) {
+ fprintf(stderr, "Must define cputype before events/metrics\n");
+ return -1;
+ }
+
+ pmu = perf_pmus__pmu_for_pmu_filter(str);
+ if (!pmu) {
+ fprintf(stderr, "--cputype %s is not supported!\n", str);
+ return -1;
+ }
+ parse_events_option_args.pmu_filter = pmu->name;
+
+ return 0;
+}
+
+static int parse_cache_level(const struct option *opt,
+ const char *str,
+ int unset __maybe_unused)
+{
+ int level;
+ u32 *aggr_mode = (u32 *)opt->value;
+ u32 *aggr_level = (u32 *)opt->data;
+
+ /*
+ * If no string is specified, aggregate based on the topology of
+ * Last Level Cache (LLC). Since the LLC level can change from
+ * architecture to architecture, set level greater than
+ * MAX_CACHE_LVL which will be interpreted as LLC.
+ */
+ if (str == NULL) {
+ level = MAX_CACHE_LVL + 1;
+ goto out;
+ }
+
+ /*
+ * The format to specify cache level is LX or lX where X is the
+ * cache level.
+ */
+ if (strlen(str) != 2 || (str[0] != 'l' && str[0] != 'L')) {
+ pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
+ MAX_CACHE_LVL,
+ MAX_CACHE_LVL);
+ return -EINVAL;
+ }
+
+ level = atoi(&str[1]);
+ if (level < 1) {
+ pr_err("Cache level must be of form L[1-%d], or l[1-%d]\n",
+ MAX_CACHE_LVL,
+ MAX_CACHE_LVL);
+ return -EINVAL;
+ }
+
+ if (level > MAX_CACHE_LVL) {
+ pr_err("perf only supports max cache level of %d.\n"
+ "Consider increasing MAX_CACHE_LVL\n", MAX_CACHE_LVL);
+ return -EINVAL;
+ }
+out:
+ *aggr_mode = AGGR_CACHE;
+ *aggr_level = level;
+ return 0;
+}
+
+static struct option stat_options[] = {
+ OPT_BOOLEAN('T', "transaction", &transaction_run,
+ "hardware transaction statistics"),
+ OPT_CALLBACK('e', "event", &parse_events_option_args, "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(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_BOOLEAN(0, "hybrid-merge", &stat_config.hybrid_merge,
+ "Merge identical named hybrid events"),
+ OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator",
+ "print counts with custom separator"),
+ OPT_BOOLEAN('j', "json-output", &stat_config.json_output,
+ "print counts in JSON format"),
+ 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_CALLBACK_OPTARG(0, "per-cache", &stat_config.aggr_mode, &stat_config.aggr_level,
+ "cache level", "aggregate count at this cache level (Default: LLC)",
+ parse_cache_level),
+ 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", &target.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, "metric-no-threshold", &stat_config.metric_no_threshold,
+ "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 ,)",
+ append_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", &quiet,
+ "don't print any output, messages or warnings (useful with record)"),
+ OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
+ "Only enable events on applying cpu with this type "
+ "for hybrid platform (e.g. core or atom)",
+ parse_cputype),
+#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()
+};
+
+/**
+ * Calculate the cache instance ID from the map in
+ * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
+ * Cache instance ID is the first CPU reported in the shared_cpu_list file.
+ */
+static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map)
+{
+ int id;
+ struct perf_cpu_map *cpu_map = perf_cpu_map__new(map);
+
+ /*
+ * If the map contains no CPU, consider the current CPU to
+ * be the first online CPU in the cache domain else use the
+ * first online CPU of the cache domain as the ID.
+ */
+ if (perf_cpu_map__empty(cpu_map))
+ id = cpu.cpu;
+ else
+ id = perf_cpu_map__cpu(cpu_map, 0).cpu;
+
+ /* Free the perf_cpu_map used to find the cache ID */
+ perf_cpu_map__put(cpu_map);
+
+ return id;
+}
+
+/**
+ * cpu__get_cache_id - Returns 0 if successful in populating the
+ * cache level and cache id. Cache level is read from
+ * /sys/devices/system/cpu/cpuX/cache/indexY/level where as cache instance ID
+ * is the first CPU reported by
+ * /sys/devices/system/cpu/cpuX/cache/indexY/shared_cpu_list
+ */
+static int cpu__get_cache_details(struct perf_cpu cpu, struct perf_cache *cache)
+{
+ int ret = 0;
+ u32 cache_level = stat_config.aggr_level;
+ struct cpu_cache_level caches[MAX_CACHE_LVL];
+ u32 i = 0, caches_cnt = 0;
+
+ cache->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
+ cache->cache = -1;
+
+ ret = build_caches_for_cpu(cpu.cpu, caches, &caches_cnt);
+ if (ret) {
+ /*
+ * If caches_cnt is not 0, cpu_cache_level data
+ * was allocated when building the topology.
+ * Free the allocated data before returning.
+ */
+ if (caches_cnt)
+ goto free_caches;
+
+ return ret;
+ }
+
+ if (!caches_cnt)
+ return -1;
+
+ /*
+ * Save the data for the highest level if no
+ * level was specified by the user.
+ */
+ if (cache_level > MAX_CACHE_LVL) {
+ int max_level_index = 0;
+
+ for (i = 1; i < caches_cnt; ++i) {
+ if (caches[i].level > caches[max_level_index].level)
+ max_level_index = i;
+ }
+
+ cache->cache_lvl = caches[max_level_index].level;
+ cache->cache = cpu__get_cache_id_from_map(cpu, caches[max_level_index].map);
+
+ /* Reset i to 0 to free entire caches[] */
+ i = 0;
+ goto free_caches;
+ }
+
+ for (i = 0; i < caches_cnt; ++i) {
+ if (caches[i].level == cache_level) {
+ cache->cache_lvl = cache_level;
+ cache->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
+ }
+
+ cpu_cache_level__free(&caches[i]);
+ }
+
+free_caches:
+ /*
+ * Free all the allocated cpu_cache_level data.
+ */
+ while (i < caches_cnt)
+ cpu_cache_level__free(&caches[i++]);
+
+ return ret;
+}
+
+/**
+ * aggr_cpu_id__cache - Create an aggr_cpu_id with cache instache ID, cache
+ * level, die and socket populated with the cache instache ID, cache level,
+ * die and socket for cpu. The function signature is compatible with
+ * aggr_cpu_id_get_t.
+ */
+static struct aggr_cpu_id aggr_cpu_id__cache(struct perf_cpu cpu, void *data)
+{
+ int ret;
+ struct aggr_cpu_id id;
+ struct perf_cache cache;
+
+ id = aggr_cpu_id__die(cpu, data);
+ if (aggr_cpu_id__is_empty(&id))
+ return id;
+
+ ret = cpu__get_cache_details(cpu, &cache);
+ if (ret)
+ return id;
+
+ id.cache_lvl = cache.cache_lvl;
+ id.cache = cache.cache;
+ return id;
+}
+
+static const char *const aggr_mode__string[] = {
+ [AGGR_CORE] = "core",
+ [AGGR_CACHE] = "cache",
+ [AGGR_DIE] = "die",
+ [AGGR_GLOBAL] = "global",
+ [AGGR_NODE] = "node",
+ [AGGR_NONE] = "none",
+ [AGGR_SOCKET] = "socket",
+ [AGGR_THREAD] = "thread",
+ [AGGR_UNSET] = "unset",
+};
+
+static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return aggr_cpu_id__socket(cpu, /*data=*/NULL);
+}
+
+static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return aggr_cpu_id__die(cpu, /*data=*/NULL);
+}
+
+static struct aggr_cpu_id perf_stat__get_cache_id(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return aggr_cpu_id__cache(cpu, /*data=*/NULL);
+}
+
+static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return aggr_cpu_id__core(cpu, /*data=*/NULL);
+}
+
+static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return aggr_cpu_id__node(cpu, /*data=*/NULL);
+}
+
+static struct aggr_cpu_id perf_stat__get_global(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return aggr_cpu_id__global(cpu, /*data=*/NULL);
+}
+
+static struct aggr_cpu_id perf_stat__get_cpu(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return aggr_cpu_id__cpu(cpu, /*data=*/NULL);
+}
+
+static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
+ aggr_get_id_t get_id, struct perf_cpu cpu)
+{
+ struct aggr_cpu_id id;
+
+ /* per-process mode - should use global aggr mode */
+ if (cpu.cpu == -1)
+ return get_id(config, cpu);
+
+ if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu]))
+ config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu);
+
+ id = config->cpus_aggr_map->map[cpu.cpu];
+ return id;
+}
+
+static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
+ struct perf_cpu cpu)
+{
+ return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);
+}
+
+static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
+ struct perf_cpu cpu)
+{
+ return perf_stat__get_aggr(config, perf_stat__get_die, cpu);
+}
+
+static struct aggr_cpu_id perf_stat__get_cache_id_cached(struct perf_stat_config *config,
+ struct perf_cpu cpu)
+{
+ return perf_stat__get_aggr(config, perf_stat__get_cache_id, cpu);
+}
+
+static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
+ struct perf_cpu cpu)
+{
+ return perf_stat__get_aggr(config, perf_stat__get_core, cpu);
+}
+
+static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
+ struct perf_cpu cpu)
+{
+ return perf_stat__get_aggr(config, perf_stat__get_node, cpu);
+}
+
+static struct aggr_cpu_id perf_stat__get_global_cached(struct perf_stat_config *config,
+ struct perf_cpu cpu)
+{
+ return perf_stat__get_aggr(config, perf_stat__get_global, cpu);
+}
+
+static struct aggr_cpu_id perf_stat__get_cpu_cached(struct perf_stat_config *config,
+ struct perf_cpu cpu)
+{
+ return perf_stat__get_aggr(config, perf_stat__get_cpu, cpu);
+}
+
+static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode)
+{
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ return aggr_cpu_id__socket;
+ case AGGR_DIE:
+ return aggr_cpu_id__die;
+ case AGGR_CACHE:
+ return aggr_cpu_id__cache;
+ case AGGR_CORE:
+ return aggr_cpu_id__core;
+ case AGGR_NODE:
+ return aggr_cpu_id__node;
+ case AGGR_NONE:
+ return aggr_cpu_id__cpu;
+ case AGGR_GLOBAL:
+ return aggr_cpu_id__global;
+ case AGGR_THREAD:
+ case AGGR_UNSET:
+ case AGGR_MAX:
+ default:
+ return NULL;
+ }
+}
+
+static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode)
+{
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ return perf_stat__get_socket_cached;
+ case AGGR_DIE:
+ return perf_stat__get_die_cached;
+ case AGGR_CACHE:
+ return perf_stat__get_cache_id_cached;
+ case AGGR_CORE:
+ return perf_stat__get_core_cached;
+ case AGGR_NODE:
+ return perf_stat__get_node_cached;
+ case AGGR_NONE:
+ return perf_stat__get_cpu_cached;
+ case AGGR_GLOBAL:
+ return perf_stat__get_global_cached;
+ case AGGR_THREAD:
+ case AGGR_UNSET:
+ case AGGR_MAX:
+ default:
+ return NULL;
+ }
+}
+
+static int perf_stat_init_aggr_mode(void)
+{
+ int nr;
+ aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode);
+
+ if (get_id) {
+ bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
+ stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
+ get_id, /*data=*/NULL, needs_sort);
+ if (!stat_config.aggr_map) {
+ pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
+ return -1;
+ }
+ stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode);
+ }
+
+ if (stat_config.aggr_mode == AGGR_THREAD) {
+ nr = perf_thread_map__nr(evsel_list->core.threads);
+ stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
+ if (stat_config.aggr_map == NULL)
+ return -ENOMEM;
+
+ for (int s = 0; s < nr; s++) {
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ id.thread_idx = s;
+ stat_config.aggr_map->map[s] = id;
+ }
+ return 0;
+ }
+
+ /*
+ * The evsel_list->cpus is the base we operate on,
+ * taking the highest cpu number to be the size of
+ * the aggregation translate cpumap.
+ */
+ if (!perf_cpu_map__empty(evsel_list->core.user_requested_cpus))
+ nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
+ else
+ nr = 0;
+ 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 struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data)
+{
+ struct perf_env *env = data;
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ if (cpu.cpu != -1)
+ id.socket = env->cpu[cpu.cpu].socket_id;
+
+ return id;
+}
+
+static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data)
+{
+ struct perf_env *env = data;
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ if (cpu.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.cpu].socket_id;
+ id.die = env->cpu[cpu.cpu].die_id;
+ }
+
+ return id;
+}
+
+static void perf_env__get_cache_id_for_cpu(struct perf_cpu cpu, struct perf_env *env,
+ u32 cache_level, struct aggr_cpu_id *id)
+{
+ int i;
+ int caches_cnt = env->caches_cnt;
+ struct cpu_cache_level *caches = env->caches;
+
+ id->cache_lvl = (cache_level > MAX_CACHE_LVL) ? 0 : cache_level;
+ id->cache = -1;
+
+ if (!caches_cnt)
+ return;
+
+ for (i = caches_cnt - 1; i > -1; --i) {
+ struct perf_cpu_map *cpu_map;
+ int map_contains_cpu;
+
+ /*
+ * If user has not specified a level, find the fist level with
+ * the cpu in the map. Since building the map is expensive, do
+ * this only if levels match.
+ */
+ if (cache_level <= MAX_CACHE_LVL && caches[i].level != cache_level)
+ continue;
+
+ cpu_map = perf_cpu_map__new(caches[i].map);
+ map_contains_cpu = perf_cpu_map__idx(cpu_map, cpu);
+ perf_cpu_map__put(cpu_map);
+
+ if (map_contains_cpu != -1) {
+ id->cache_lvl = caches[i].level;
+ id->cache = cpu__get_cache_id_from_map(cpu, caches[i].map);
+ return;
+ }
+ }
+}
+
+static struct aggr_cpu_id perf_env__get_cache_aggr_by_cpu(struct perf_cpu cpu,
+ void *data)
+{
+ struct perf_env *env = data;
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ if (cpu.cpu != -1) {
+ u32 cache_level = (perf_stat.aggr_level) ?: stat_config.aggr_level;
+
+ id.socket = env->cpu[cpu.cpu].socket_id;
+ id.die = env->cpu[cpu.cpu].die_id;
+ perf_env__get_cache_id_for_cpu(cpu, env, cache_level, &id);
+ }
+
+ return id;
+}
+
+static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data)
+{
+ struct perf_env *env = data;
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ if (cpu.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.cpu].socket_id;
+ id.die = env->cpu[cpu.cpu].die_id;
+ id.core = env->cpu[cpu.cpu].core_id;
+ }
+
+ return id;
+}
+
+static struct aggr_cpu_id perf_env__get_cpu_aggr_by_cpu(struct perf_cpu cpu, void *data)
+{
+ struct perf_env *env = data;
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ if (cpu.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.cpu].socket_id;
+ id.die = env->cpu[cpu.cpu].die_id;
+ id.core = env->cpu[cpu.cpu].core_id;
+ id.cpu = cpu;
+ }
+
+ return id;
+}
+
+static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data)
+{
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ id.node = perf_env__numa_node(data, cpu);
+ return id;
+}
+
+static struct aggr_cpu_id perf_env__get_global_aggr_by_cpu(struct perf_cpu cpu __maybe_unused,
+ void *data __maybe_unused)
+{
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ /* it always aggregates to the cpu 0 */
+ id.cpu = (struct perf_cpu){ .cpu = 0 };
+ return id;
+}
+
+static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return perf_env__get_socket_aggr_by_cpu(cpu, &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 cpu)
+{
+ return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);
+}
+
+static struct aggr_cpu_id perf_stat__get_cache_file(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return perf_env__get_cache_aggr_by_cpu(cpu, &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 cpu)
+{
+ return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);
+}
+
+static struct aggr_cpu_id perf_stat__get_cpu_file(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return perf_env__get_cpu_aggr_by_cpu(cpu, &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 cpu)
+{
+ return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);
+}
+
+static struct aggr_cpu_id perf_stat__get_global_file(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu cpu)
+{
+ return perf_env__get_global_aggr_by_cpu(cpu, &perf_stat.session->header.env);
+}
+
+static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode)
+{
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ return perf_env__get_socket_aggr_by_cpu;
+ case AGGR_DIE:
+ return perf_env__get_die_aggr_by_cpu;
+ case AGGR_CACHE:
+ return perf_env__get_cache_aggr_by_cpu;
+ case AGGR_CORE:
+ return perf_env__get_core_aggr_by_cpu;
+ case AGGR_NODE:
+ return perf_env__get_node_aggr_by_cpu;
+ case AGGR_GLOBAL:
+ return perf_env__get_global_aggr_by_cpu;
+ case AGGR_NONE:
+ return perf_env__get_cpu_aggr_by_cpu;
+ case AGGR_THREAD:
+ case AGGR_UNSET:
+ case AGGR_MAX:
+ default:
+ return NULL;
+ }
+}
+
+static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode)
+{
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ return perf_stat__get_socket_file;
+ case AGGR_DIE:
+ return perf_stat__get_die_file;
+ case AGGR_CACHE:
+ return perf_stat__get_cache_file;
+ case AGGR_CORE:
+ return perf_stat__get_core_file;
+ case AGGR_NODE:
+ return perf_stat__get_node_file;
+ case AGGR_GLOBAL:
+ return perf_stat__get_global_file;
+ case AGGR_NONE:
+ return perf_stat__get_cpu_file;
+ case AGGR_THREAD:
+ case AGGR_UNSET:
+ case AGGR_MAX:
+ default:
+ return NULL;
+ }
+}
+
+static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
+{
+ struct perf_env *env = &st->session->header.env;
+ aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode);
+ bool needs_sort = stat_config.aggr_mode != AGGR_NONE;
+
+ if (stat_config.aggr_mode == AGGR_THREAD) {
+ int nr = perf_thread_map__nr(evsel_list->core.threads);
+
+ stat_config.aggr_map = cpu_aggr_map__empty_new(nr);
+ if (stat_config.aggr_map == NULL)
+ return -ENOMEM;
+
+ for (int s = 0; s < nr; s++) {
+ struct aggr_cpu_id id = aggr_cpu_id__empty();
+
+ id.thread_idx = s;
+ stat_config.aggr_map->map[s] = id;
+ }
+ return 0;
+ }
+
+ if (!get_id)
+ return 0;
+
+ stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus,
+ get_id, env, needs_sort);
+ if (!stat_config.aggr_map) {
+ pr_err("cannot build %s map\n", aggr_mode__string[stat_config.aggr_mode]);
+ return -1;
+ }
+ stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode);
+ 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)
+{
+ 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 perf_event_attr default_null_attrs[] = {};
+ const char *pmu = parse_events_option_args.pmu_filter ?: "all";
+
+ /* Set attrs if no event is selected and !null_run: */
+ if (stat_config.null_run)
+ return 0;
+
+ 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(pmu, "transaction")) {
+ pr_err("Missing transaction metrics\n");
+ return -1;
+ }
+ return metricgroup__parse_groups(evsel_list, pmu, "transaction",
+ stat_config.metric_no_group,
+ stat_config.metric_no_merge,
+ stat_config.metric_no_threshold,
+ stat_config.user_requested_cpu_list,
+ stat_config.system_wide,
+ &stat_config.metric_events);
+ }
+
+ if (smi_cost) {
+ int smi;
+
+ if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
+ pr_err("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 (!metricgroup__has_metric(pmu, "smi")) {
+ pr_err("Missing smi metrics\n");
+ return -1;
+ }
+
+ if (!force_metric_only)
+ stat_config.metric_only = true;
+
+ return metricgroup__parse_groups(evsel_list, pmu, "smi",
+ stat_config.metric_no_group,
+ stat_config.metric_no_merge,
+ stat_config.metric_no_threshold,
+ stat_config.user_requested_cpu_list,
+ stat_config.system_wide,
+ &stat_config.metric_events);
+ }
+
+ if (topdown_run) {
+ unsigned int max_level = metricgroups__topdown_max_level();
+ char str[] = "TopdownL1";
+
+ if (!force_metric_only)
+ stat_config.metric_only = true;
+
+ if (!max_level) {
+ pr_err("Topdown requested but the topdown metric groups aren't present.\n"
+ "(See perf list the metric groups have names like TopdownL1)\n");
+ return -1;
+ }
+ 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 = 1;
+
+ 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");
+ }
+ str[8] = stat_config.topdown_level + '0';
+ if (metricgroup__parse_groups(evsel_list,
+ pmu, str,
+ /*metric_no_group=*/false,
+ /*metric_no_merge=*/false,
+ /*metric_no_threshold=*/true,
+ stat_config.user_requested_cpu_list,
+ stat_config.system_wide,
+ &stat_config.metric_events) < 0)
+ return -1;
+ }
+
+ if (!stat_config.topdown_level)
+ stat_config.topdown_level = 1;
+
+ if (!evsel_list->core.nr_entries) {
+ /* No events so add defaults. */
+ 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 (perf_pmus__have_event("cpu", "stalled-cycles-frontend")) {
+ if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0)
+ return -1;
+ }
+ if (perf_pmus__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;
+ /*
+ * Add TopdownL1 metrics if they exist. To minimize
+ * multiplexing, don't request threshold computation.
+ */
+ if (metricgroup__has_metric(pmu, "Default")) {
+ struct evlist *metric_evlist = evlist__new();
+ struct evsel *metric_evsel;
+
+ if (!metric_evlist)
+ return -1;
+
+ if (metricgroup__parse_groups(metric_evlist, pmu, "Default",
+ /*metric_no_group=*/false,
+ /*metric_no_merge=*/false,
+ /*metric_no_threshold=*/true,
+ stat_config.user_requested_cpu_list,
+ stat_config.system_wide,
+ &stat_config.metric_events) < 0)
+ return -1;
+
+ evlist__for_each_entry(metric_evlist, metric_evsel) {
+ metric_evsel->skippable = true;
+ metric_evsel->default_metricgroup = true;
+ }
+ evlist__splice_list_tail(evsel_list, &metric_evlist->core.entries);
+ evlist__delete(metric_evlist);
+ }
+
+ /* Platform specific attrs */
+ if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 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, 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 timespec tsh, *ts = NULL;
+ const char **argv = session->header.env.cmdline_argv;
+ int argc = session->header.env.nr_cmdline;
+
+ process_counters();
+
+ 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");
+ } else 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);
+
+ if (stat_config.aggr_map) {
+ int nr_aggr = stat_config.aggr_map->nr;
+
+ if (evlist__alloc_aggr_stats(session->evlist, nr_aggr) < 0) {
+ pr_err("cannot allocate aggr counts\n");
+ return -1;
+ }
+ }
+ 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(&stat_config, evsel_list, /*alloc_raw=*/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,
+ .aggr_level = 0,
+};
+
+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_CALLBACK_OPTARG(0, "per-cache", &perf_stat.aggr_mode, &perf_stat.aggr_level,
+ "cache level",
+ "aggregate count at this cache level (Default: LLC)",
+ parse_cache_level),
+ 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, &perf_stat.tool);
+ if (IS_ERR(session))
+ return PTR_ERR(session);
+
+ perf_stat.session = session;
+ stat_config.output = stderr;
+ evlist__delete(evsel_list);
+ 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.requires_cpu &&
+ !evsel__name_is(counter, "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);
+
+ 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 && strlen(argv[0]) > 2 && strstarts("record", argv[0])) {
+ argc = __cmd_record(argc, argv);
+ if (argc < 0)
+ return -1;
+ } else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0]))
+ 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 && !quiet) {
+ struct timespec tm;
+ mode = append_file ? "a" : "w";
+
+ output = fopen(output_name, mode);
+ if (!output) {
+ perror("failed to create output file");
+ return -1;
+ }
+ if (!stat_config.json_output) {
+ 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;
+ }
+ }
+
+ if (stat_config.interval_clear && !isatty(fileno(output))) {
+ fprintf(stderr, "--interval-clear does not work with output\n");
+ parse_options_usage(stat_usage, stat_options, "o", 1);
+ parse_options_usage(NULL, stat_options, "log-fd", 0);
+ parse_options_usage(NULL, stat_options, "interval-clear", 0);
+ return -1;
+ }
+
+ 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 || stat_config.cgroup_list)) &&
+ !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);
+ parse_options_usage(NULL, stat_options, "for-each-cgroup", 0);
+ 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 > 0)
+ iostat_list(evsel_list, &stat_config);
+ if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target))
+ target.system_wide = true;
+ }
+
+ if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide))
+ target.per_thread = true;
+
+ stat_config.system_wide = target.system_wide;
+ if (target.cpu_list) {
+ stat_config.user_requested_cpu_list = strdup(target.cpu_list);
+ if (!stat_config.user_requested_cpu_list) {
+ status = -ENOMEM;
+ goto out;
+ }
+ }
+
+ /*
+ * Metric parsing needs to be delayed as metrics may optimize events
+ * knowing the target is system-wide.
+ */
+ if (metrics) {
+ const char *pmu = parse_events_option_args.pmu_filter ?: "all";
+ int ret = metricgroup__parse_groups(evsel_list, pmu, metrics,
+ stat_config.metric_no_group,
+ stat_config.metric_no_merge,
+ stat_config.metric_no_threshold,
+ stat_config.user_requested_cpu_list,
+ stat_config.system_wide,
+ &stat_config.metric_events);
+
+ zfree(&metrics);
+ if (ret) {
+ status = ret;
+ 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) {
+ parse_options_usage(stat_usage, stat_options,
+ "for-each-cgroup", 0);
+ goto out;
+ }
+ }
+
+ evlist__warn_user_requested_cpus(evsel_list, target.cpu_list);
+
+ 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 (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_stat_init_aggr_mode())
+ goto out;
+
+ if (evlist__alloc_stats(&stat_config, evsel_list, interval))
+ 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;
+
+ /* Enable ignoring missing threads when -p option is defined. */
+ evlist__first(evsel_list)->ignore_missing_thread = target.pid;
+ 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)) {
+ if (stat_config.run_count > 1)
+ evlist__copy_res_stats(&stat_config, evsel_list);
+ 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);
+ zfree(&stat_config.user_requested_cpu_list);
+
+ if (smi_cost && smi_reset)
+ sysfs__write_int(FREEZE_ON_SMI_PATH, 0);
+
+ evlist__delete(evsel_list);
+
+ metricgroup__rblist_exit(&stat_config.metric_events);
+ evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close);
+
+ return status;
+}