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-rw-r--r--tools/perf/builtin-stat.c328
1 files changed, 265 insertions, 63 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index c247faca7127..99848761f573 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -65,6 +65,11 @@
#define CNTR_NOT_SUPPORTED "<not supported>"
#define CNTR_NOT_COUNTED "<not counted>"
+static void print_stat(int argc, const char **argv);
+static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
+static void print_counter(struct perf_evsel *counter, char *prefix);
+static void print_aggr_socket(char *prefix);
+
static struct perf_evlist *evsel_list;
static struct perf_target target = {
@@ -75,6 +80,7 @@ static int run_count = 1;
static bool no_inherit = false;
static bool scale = true;
static bool no_aggr = false;
+static bool aggr_socket = false;
static pid_t child_pid = -1;
static bool null_run = false;
static int detailed_run = 0;
@@ -87,6 +93,9 @@ static FILE *output = NULL;
static const char *pre_cmd = NULL;
static const char *post_cmd = NULL;
static bool sync_run = false;
+static unsigned int interval = 0;
+static struct timespec ref_time;
+static struct cpu_map *sock_map;
static volatile int done = 0;
@@ -94,6 +103,28 @@ struct perf_stat {
struct stats res_stats[3];
};
+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 + 1000000000L - b->tv_nsec;
+ r->tv_sec--;
+ } else {
+ r->tv_nsec = a->tv_nsec - b->tv_nsec ;
+ }
+}
+
+static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
+{
+ return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
+}
+
+static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
+{
+ return perf_evsel__cpus(evsel)->nr;
+}
+
static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
{
evsel->priv = zalloc(sizeof(struct perf_stat));
@@ -106,14 +137,27 @@ static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
evsel->priv = NULL;
}
-static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
+static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
{
- return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus;
+ void *addr;
+ size_t sz;
+
+ sz = sizeof(*evsel->counts) +
+ (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
+
+ addr = zalloc(sz);
+ if (!addr)
+ return -ENOMEM;
+
+ evsel->prev_raw_counts = addr;
+
+ return 0;
}
-static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
+static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
{
- return perf_evsel__cpus(evsel)->nr;
+ free(evsel->prev_raw_counts);
+ evsel->prev_raw_counts = NULL;
}
static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
@@ -132,8 +176,6 @@ static struct stats walltime_nsecs_stats;
static int create_perf_stat_counter(struct perf_evsel *evsel)
{
struct perf_event_attr *attr = &evsel->attr;
- bool exclude_guest_missing = false;
- int ret;
if (scale)
attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
@@ -141,38 +183,16 @@ static int create_perf_stat_counter(struct perf_evsel *evsel)
attr->inherit = !no_inherit;
-retry:
- if (exclude_guest_missing)
- evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
-
- if (perf_target__has_cpu(&target)) {
- ret = perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
- if (ret)
- goto check_ret;
- return 0;
- }
+ if (perf_target__has_cpu(&target))
+ return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
if (!perf_target__has_task(&target) &&
- !perf_evsel__is_group_member(evsel)) {
+ perf_evsel__is_group_leader(evsel)) {
attr->disabled = 1;
attr->enable_on_exec = 1;
}
- ret = perf_evsel__open_per_thread(evsel, evsel_list->threads);
- if (!ret)
- return 0;
- /* fall through */
-check_ret:
- if (ret && errno == EINVAL) {
- if (!exclude_guest_missing &&
- (evsel->attr.exclude_guest || evsel->attr.exclude_host)) {
- pr_debug("Old kernel, cannot exclude "
- "guest or host samples.\n");
- exclude_guest_missing = true;
- goto retry;
- }
- }
- return ret;
+ return perf_evsel__open_per_thread(evsel, evsel_list->threads);
}
/*
@@ -269,15 +289,79 @@ static int read_counter(struct perf_evsel *counter)
return 0;
}
+static void print_interval(void)
+{
+ static int num_print_interval;
+ struct perf_evsel *counter;
+ struct perf_stat *ps;
+ struct timespec ts, rs;
+ char prefix[64];
+
+ if (no_aggr) {
+ list_for_each_entry(counter, &evsel_list->entries, node) {
+ ps = counter->priv;
+ memset(ps->res_stats, 0, sizeof(ps->res_stats));
+ read_counter(counter);
+ }
+ } else {
+ list_for_each_entry(counter, &evsel_list->entries, node) {
+ ps = counter->priv;
+ memset(ps->res_stats, 0, sizeof(ps->res_stats));
+ read_counter_aggr(counter);
+ }
+ }
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ diff_timespec(&rs, &ts, &ref_time);
+ sprintf(prefix, "%6lu.%09lu%s", rs.tv_sec, rs.tv_nsec, csv_sep);
+
+ if (num_print_interval == 0 && !csv_output) {
+ if (aggr_socket)
+ fprintf(output, "# time socket cpus counts events\n");
+ else if (no_aggr)
+ fprintf(output, "# time CPU counts events\n");
+ else
+ fprintf(output, "# time counts events\n");
+ }
+
+ if (++num_print_interval == 25)
+ num_print_interval = 0;
+
+ if (aggr_socket)
+ print_aggr_socket(prefix);
+ else if (no_aggr) {
+ list_for_each_entry(counter, &evsel_list->entries, node)
+ print_counter(counter, prefix);
+ } else {
+ list_for_each_entry(counter, &evsel_list->entries, node)
+ print_counter_aggr(counter, prefix);
+ }
+}
+
static int __run_perf_stat(int argc __maybe_unused, const char **argv)
{
+ char msg[512];
unsigned long long t0, t1;
struct perf_evsel *counter;
+ struct timespec ts;
int status = 0;
int child_ready_pipe[2], go_pipe[2];
const bool forks = (argc > 0);
char buf;
+ if (interval) {
+ ts.tv_sec = interval / 1000;
+ ts.tv_nsec = (interval % 1000) * 1000000;
+ } else {
+ ts.tv_sec = 1;
+ ts.tv_nsec = 0;
+ }
+
+ if (aggr_socket
+ && cpu_map__build_socket_map(evsel_list->cpus, &sock_map)) {
+ perror("cannot build socket map");
+ return -1;
+ }
+
if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
perror("failed to create pipes");
return -1;
@@ -348,20 +432,13 @@ static int __run_perf_stat(int argc __maybe_unused, const char **argv)
continue;
}
- if (errno == EPERM || errno == EACCES) {
- error("You may not have permission to collect %sstats.\n"
- "\t Consider tweaking"
- " /proc/sys/kernel/perf_event_paranoid or running as root.",
- target.system_wide ? "system-wide " : "");
- } else {
- error("open_counter returned with %d (%s). "
- "/bin/dmesg may provide additional information.\n",
- errno, strerror(errno));
- }
+ perf_evsel__open_strerror(counter, &target,
+ errno, msg, sizeof(msg));
+ ui__error("%s\n", msg);
+
if (child_pid != -1)
kill(child_pid, SIGTERM);
- pr_err("Not all events could be opened.\n");
return -1;
}
counter->supported = true;
@@ -377,14 +454,25 @@ static int __run_perf_stat(int argc __maybe_unused, const char **argv)
* Enable counters and exec the command:
*/
t0 = rdclock();
+ clock_gettime(CLOCK_MONOTONIC, &ref_time);
if (forks) {
close(go_pipe[1]);
+ if (interval) {
+ while (!waitpid(child_pid, &status, WNOHANG)) {
+ nanosleep(&ts, NULL);
+ print_interval();
+ }
+ }
wait(&status);
if (WIFSIGNALED(status))
psignal(WTERMSIG(status), argv[0]);
} else {
- while(!done) sleep(1);
+ while (!done) {
+ nanosleep(&ts, NULL);
+ if (interval)
+ print_interval();
+ }
}
t1 = rdclock();
@@ -454,13 +542,21 @@ static void print_noise(struct perf_evsel *evsel, double avg)
print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
}
-static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
+static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
{
double msecs = avg / 1e6;
char cpustr[16] = { '\0', };
const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s";
- if (no_aggr)
+ if (aggr_socket)
+ sprintf(cpustr, "S%*d%s%*d%s",
+ csv_output ? 0 : -5,
+ cpu,
+ csv_sep,
+ csv_output ? 0 : 4,
+ nr,
+ csv_sep);
+ else if (no_aggr)
sprintf(cpustr, "CPU%*d%s",
csv_output ? 0 : -4,
perf_evsel__cpus(evsel)->map[cpu], csv_sep);
@@ -470,7 +566,7 @@ static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
if (evsel->cgrp)
fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
- if (csv_output)
+ if (csv_output || interval)
return;
if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
@@ -659,7 +755,7 @@ static void print_ll_cache_misses(int cpu,
fprintf(output, " of all LL-cache hits ");
}
-static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
+static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
{
double total, ratio = 0.0;
char cpustr[16] = { '\0', };
@@ -672,7 +768,15 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
else
fmt = "%s%18.0f%s%-25s";
- if (no_aggr)
+ if (aggr_socket)
+ sprintf(cpustr, "S%*d%s%*d%s",
+ csv_output ? 0 : -5,
+ cpu,
+ csv_sep,
+ csv_output ? 0 : 4,
+ nr,
+ csv_sep);
+ else if (no_aggr)
sprintf(cpustr, "CPU%*d%s",
csv_output ? 0 : -4,
perf_evsel__cpus(evsel)->map[cpu], csv_sep);
@@ -684,12 +788,11 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
if (evsel->cgrp)
fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
- if (csv_output)
+ if (csv_output || interval)
return;
if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
total = avg_stats(&runtime_cycles_stats[cpu]);
-
if (total)
ratio = avg / total;
@@ -779,16 +882,83 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
}
}
+static void print_aggr_socket(char *prefix)
+{
+ struct perf_evsel *counter;
+ u64 ena, run, val;
+ int cpu, s, s2, sock, nr;
+
+ if (!sock_map)
+ return;
+
+ for (s = 0; s < sock_map->nr; s++) {
+ sock = cpu_map__socket(sock_map, s);
+ list_for_each_entry(counter, &evsel_list->entries, node) {
+ val = ena = run = 0;
+ nr = 0;
+ for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
+ s2 = cpu_map__get_socket(evsel_list->cpus, cpu);
+ if (s2 != sock)
+ continue;
+ val += counter->counts->cpu[cpu].val;
+ ena += counter->counts->cpu[cpu].ena;
+ run += counter->counts->cpu[cpu].run;
+ nr++;
+ }
+ if (prefix)
+ fprintf(output, "%s", prefix);
+
+ if (run == 0 || ena == 0) {
+ fprintf(output, "S%*d%s%*d%s%*s%s%*s",
+ csv_output ? 0 : -5,
+ s,
+ csv_sep,
+ csv_output ? 0 : 4,
+ nr,
+ csv_sep,
+ csv_output ? 0 : 18,
+ counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
+ csv_sep,
+ csv_output ? 0 : -24,
+ perf_evsel__name(counter));
+ if (counter->cgrp)
+ fprintf(output, "%s%s",
+ csv_sep, counter->cgrp->name);
+
+ fputc('\n', output);
+ continue;
+ }
+
+ if (nsec_counter(counter))
+ nsec_printout(sock, nr, counter, val);
+ else
+ abs_printout(sock, nr, counter, val);
+
+ if (!csv_output) {
+ print_noise(counter, 1.0);
+
+ if (run != ena)
+ fprintf(output, " (%.2f%%)",
+ 100.0 * run / ena);
+ }
+ fputc('\n', output);
+ }
+ }
+}
+
/*
* Print out the results of a single counter:
* aggregated counts in system-wide mode
*/
-static void print_counter_aggr(struct perf_evsel *counter)
+static void print_counter_aggr(struct perf_evsel *counter, char *prefix)
{
struct perf_stat *ps = counter->priv;
double avg = avg_stats(&ps->res_stats[0]);
int scaled = counter->counts->scaled;
+ if (prefix)
+ fprintf(output, "%s", prefix);
+
if (scaled == -1) {
fprintf(output, "%*s%s%*s",
csv_output ? 0 : 18,
@@ -805,9 +975,9 @@ static void print_counter_aggr(struct perf_evsel *counter)
}
if (nsec_counter(counter))
- nsec_printout(-1, counter, avg);
+ nsec_printout(-1, 0, counter, avg);
else
- abs_printout(-1, counter, avg);
+ abs_printout(-1, 0, counter, avg);
print_noise(counter, avg);
@@ -831,7 +1001,7 @@ static void print_counter_aggr(struct perf_evsel *counter)
* Print out the results of a single counter:
* does not use aggregated count in system-wide
*/
-static void print_counter(struct perf_evsel *counter)
+static void print_counter(struct perf_evsel *counter, char *prefix)
{
u64 ena, run, val;
int cpu;
@@ -840,6 +1010,10 @@ static void print_counter(struct perf_evsel *counter)
val = counter->counts->cpu[cpu].val;
ena = counter->counts->cpu[cpu].ena;
run = counter->counts->cpu[cpu].run;
+
+ if (prefix)
+ fprintf(output, "%s", prefix);
+
if (run == 0 || ena == 0) {
fprintf(output, "CPU%*d%s%*s%s%*s",
csv_output ? 0 : -4,
@@ -859,9 +1033,9 @@ static void print_counter(struct perf_evsel *counter)
}
if (nsec_counter(counter))
- nsec_printout(cpu, counter, val);
+ nsec_printout(cpu, 0, counter, val);
else
- abs_printout(cpu, counter, val);
+ abs_printout(cpu, 0, counter, val);
if (!csv_output) {
print_noise(counter, 1.0);
@@ -899,12 +1073,14 @@ static void print_stat(int argc, const char **argv)
fprintf(output, ":\n\n");
}
- if (no_aggr) {
+ if (aggr_socket)
+ print_aggr_socket(NULL);
+ else if (no_aggr) {
list_for_each_entry(counter, &evsel_list->entries, node)
- print_counter(counter);
+ print_counter(counter, NULL);
} else {
list_for_each_entry(counter, &evsel_list->entries, node)
- print_counter_aggr(counter);
+ print_counter_aggr(counter, NULL);
}
if (!csv_output) {
@@ -925,7 +1101,7 @@ static volatile int signr = -1;
static void skip_signal(int signo)
{
- if(child_pid == -1)
+ if ((child_pid == -1) || interval)
done = 1;
signr = signo;
@@ -1145,6 +1321,9 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
"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", &interval,
+ "print counts at regular interval in ms (>= 100)"),
+ OPT_BOOLEAN(0, "aggr-socket", &aggr_socket, "aggregate counts per processor socket"),
OPT_END()
};
const char * const stat_usage[] = {
@@ -1231,6 +1410,14 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
usage_with_options(stat_usage, options);
}
+ if (aggr_socket) {
+ if (!perf_target__has_cpu(&target)) {
+ fprintf(stderr, "--aggr-socket only available in system-wide mode (-a)\n");
+ usage_with_options(stat_usage, options);
+ }
+ no_aggr = true;
+ }
+
if (add_default_attributes())
goto out;
@@ -1245,12 +1432,23 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
usage_with_options(stat_usage, options);
return -1;
}
+ if (interval && interval < 100) {
+ pr_err("print interval must be >= 100ms\n");
+ usage_with_options(stat_usage, options);
+ return -1;
+ }
list_for_each_entry(pos, &evsel_list->entries, node) {
if (perf_evsel__alloc_stat_priv(pos) < 0 ||
perf_evsel__alloc_counts(pos, perf_evsel__nr_cpus(pos)) < 0)
goto out_free_fd;
}
+ if (interval) {
+ list_for_each_entry(pos, &evsel_list->entries, node) {
+ if (perf_evsel__alloc_prev_raw_counts(pos) < 0)
+ goto out_free_fd;
+ }
+ }
/*
* We dont want to block the signals - that would cause
@@ -1260,6 +1458,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
*/
atexit(sig_atexit);
signal(SIGINT, skip_signal);
+ signal(SIGCHLD, skip_signal);
signal(SIGALRM, skip_signal);
signal(SIGABRT, skip_signal);
@@ -1272,11 +1471,14 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
status = run_perf_stat(argc, argv);
}
- if (status != -1)
+ if (status != -1 && !interval)
print_stat(argc, argv);
out_free_fd:
- list_for_each_entry(pos, &evsel_list->entries, node)
+ list_for_each_entry(pos, &evsel_list->entries, node) {
perf_evsel__free_stat_priv(pos);
+ perf_evsel__free_counts(pos);
+ perf_evsel__free_prev_raw_counts(pos);
+ }
perf_evlist__delete_maps(evsel_list);
out:
perf_evlist__delete(evsel_list);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 17:15:38 +0000