#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.h"
#include "util/thread_map.h"
+#include <stdlib.h>
#include <sys/prctl.h>
-#include <math.h>
#include <locale.h>
#define DEFAULT_SEPARATOR " "
#define CNTR_NOT_SUPPORTED "<not supported>"
#define CNTR_NOT_COUNTED "<not counted>"
-static struct perf_event_attr default_attrs[] = {
-
- { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
- { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
- { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
- { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
-
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
- { .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:
- */
-static 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:
- */
-static 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:
- */
-static 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) },
-};
-
-
+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(char *prefix);
static struct perf_evlist *evsel_list;
.uid = UINT_MAX,
};
-static int run_idx = 0;
+enum aggr_mode {
+ AGGR_NONE,
+ AGGR_GLOBAL,
+ AGGR_SOCKET,
+};
+
static int run_count = 1;
static bool no_inherit = false;
static bool scale = true;
-static bool no_aggr = false;
+static enum aggr_mode aggr_mode = AGGR_GLOBAL;
static pid_t child_pid = -1;
static bool null_run = false;
static int detailed_run = 0;
-static bool sync_run = false;
static bool big_num = true;
static int big_num_opt = -1;
static const char *csv_sep = NULL;
static bool csv_output = false;
static bool group = false;
-static const char *output_name = NULL;
static FILE *output = NULL;
-static int output_fd;
+static const char *pre_cmd = NULL;
+static const char *post_cmd = NULL;
+static bool sync_run = false;
+static unsigned int interval = 0;
+static bool forever = false;
+static struct timespec ref_time;
+static struct cpu_map *aggr_map;
+static int (*aggr_get_id)(struct cpu_map *m, int cpu);
static volatile int done = 0;
-struct stats
-{
- double n, mean, M2;
-};
-
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 void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
+{
+ memset(evsel->priv, 0, sizeof(struct perf_stat));
+}
+
static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
{
evsel->priv = zalloc(sizeof(struct perf_stat));
evsel->priv = NULL;
}
-static void update_stats(struct stats *stats, u64 val)
+static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel)
{
- double delta;
+ void *addr;
+ size_t sz;
+
+ sz = sizeof(*evsel->counts) +
+ (perf_evsel__nr_cpus(evsel) * sizeof(struct perf_counts_values));
- stats->n++;
- delta = val - stats->mean;
- stats->mean += delta / stats->n;
- stats->M2 += delta*(val - stats->mean);
+ addr = zalloc(sz);
+ if (!addr)
+ return -ENOMEM;
+
+ evsel->prev_raw_counts = addr;
+
+ return 0;
}
-static double avg_stats(struct stats *stats)
+static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
{
- return stats->mean;
+ free(evsel->prev_raw_counts);
+ evsel->prev_raw_counts = NULL;
}
-/*
- * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
- *
- * (\Sum n_i^2) - ((\Sum n_i)^2)/n
- * s^2 = -------------------------------
- * n - 1
- *
- * http://en.wikipedia.org/wiki/Stddev
- *
- * The std dev of the mean is related to the std dev by:
- *
- * s
- * s_mean = -------
- * sqrt(n)
- *
- */
-static double stddev_stats(struct stats *stats)
+static void perf_evlist__free_stats(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel;
+
+ list_for_each_entry(evsel, &evlist->entries, node) {
+ perf_evsel__free_stat_priv(evsel);
+ perf_evsel__free_counts(evsel);
+ perf_evsel__free_prev_raw_counts(evsel);
+ }
+}
+
+static int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
{
- double variance, variance_mean;
+ struct perf_evsel *evsel;
- if (!stats->n)
- return 0.0;
+ list_for_each_entry(evsel, &evlist->entries, node) {
+ if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
+ perf_evsel__alloc_counts(evsel, perf_evsel__nr_cpus(evsel)) < 0 ||
+ (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel) < 0))
+ goto out_free;
+ }
- variance = stats->M2 / (stats->n - 1);
- variance_mean = variance / stats->n;
+ return 0;
- return sqrt(variance_mean);
+out_free:
+ perf_evlist__free_stats(evlist);
+ return -1;
}
static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
static struct stats walltime_nsecs_stats;
-static int create_perf_stat_counter(struct perf_evsel *evsel,
- struct perf_evsel *first)
+static void perf_stat__reset_stats(struct perf_evlist *evlist)
{
- struct perf_event_attr *attr = &evsel->attr;
- struct xyarray *group_fd = NULL;
- bool exclude_guest_missing = false;
- int ret;
+ struct perf_evsel *evsel;
+
+ list_for_each_entry(evsel, &evlist->entries, node) {
+ perf_evsel__reset_stat_priv(evsel);
+ perf_evsel__reset_counts(evsel, perf_evsel__nr_cpus(evsel));
+ }
+
+ memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats));
+ memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats));
+ memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats));
+ memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats));
+ memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats));
+ memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats));
+ memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats));
+ memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats));
+ memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
+ memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
+ memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
+ memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
+}
- if (group && evsel != first)
- group_fd = first->fd;
+static int create_perf_stat_counter(struct perf_evsel *evsel)
+{
+ struct perf_event_attr *attr = &evsel->attr;
if (scale)
attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
attr->inherit = !no_inherit;
-retry:
- if (exclude_guest_missing)
- evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
+ if (perf_target__has_cpu(&target))
+ return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
- if (perf_target__has_cpu(&target)) {
- ret = perf_evsel__open_per_cpu(evsel, evsel_list->cpus,
- group, group_fd);
- if (ret)
- goto check_ret;
- return 0;
- }
-
- if (!perf_target__has_task(&target) && (!group || evsel == first)) {
+ if (!perf_target__has_task(&target) &&
+ perf_evsel__is_group_leader(evsel)) {
attr->disabled = 1;
attr->enable_on_exec = 1;
}
- ret = perf_evsel__open_per_thread(evsel, evsel_list->threads,
- group, group_fd);
- 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);
}
/*
u64 *count = counter->counts->aggr.values;
int i;
- if (__perf_evsel__read(counter, evsel_list->cpus->nr,
- evsel_list->threads->nr, scale) < 0)
+ if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
+ thread_map__nr(evsel_list->threads), scale) < 0)
return -1;
for (i = 0; i < 3; i++)
if (verbose) {
fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
- event_name(counter), count[0], count[1], count[2]);
+ perf_evsel__name(counter), count[0], count[1], count[2]);
}
/*
u64 *count;
int cpu;
- for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
+ for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
return -1;
return 0;
}
-static int run_perf_stat(int argc __used, const char **argv)
+static void print_interval(void)
{
- unsigned long long t0, t1;
- struct perf_evsel *counter, *first;
- int status = 0;
- int child_ready_pipe[2], go_pipe[2];
- const bool forks = (argc > 0);
- char buf;
+ static int num_print_interval;
+ struct perf_evsel *counter;
+ struct perf_stat *ps;
+ struct timespec ts, rs;
+ char prefix[64];
- if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
- perror("failed to create pipes");
- exit(1);
+ if (aggr_mode == AGGR_GLOBAL) {
+ 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);
+ }
+ } else {
+ list_for_each_entry(counter, &evsel_list->entries, node) {
+ ps = counter->priv;
+ memset(ps->res_stats, 0, sizeof(ps->res_stats));
+ read_counter(counter);
+ }
}
- if (forks) {
- if ((child_pid = fork()) < 0)
- perror("failed to fork");
+ 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) {
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ fprintf(output, "# time socket cpus counts events\n");
+ break;
+ case AGGR_NONE:
+ fprintf(output, "# time CPU counts events\n");
+ break;
+ case AGGR_GLOBAL:
+ default:
+ fprintf(output, "# time counts events\n");
+ }
+ }
- if (!child_pid) {
- close(child_ready_pipe[0]);
- close(go_pipe[1]);
- fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
+ if (++num_print_interval == 25)
+ num_print_interval = 0;
- /*
- * Do a dummy execvp to get the PLT entry resolved,
- * so we avoid the resolver overhead on the real
- * execvp call.
- */
- execvp("", (char **)argv);
-
- /*
- * Tell the parent we're ready to go
- */
- close(child_ready_pipe[1]);
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ print_aggr(prefix);
+ break;
+ case AGGR_NONE:
+ list_for_each_entry(counter, &evsel_list->entries, node)
+ print_counter(counter, prefix);
+ break;
+ case AGGR_GLOBAL:
+ default:
+ list_for_each_entry(counter, &evsel_list->entries, node)
+ print_counter_aggr(counter, prefix);
+ }
+}
- /*
- * Wait until the parent tells us to go.
- */
- if (read(go_pipe[0], &buf, 1) == -1)
- perror("unable to read pipe");
+static int __run_perf_stat(int argc, const char **argv)
+{
+ char msg[512];
+ unsigned long long t0, t1;
+ struct perf_evsel *counter;
+ struct timespec ts;
+ int status = 0;
+ const bool forks = (argc > 0);
- execvp(argv[0], (char **)argv);
+ if (interval) {
+ ts.tv_sec = interval / 1000;
+ ts.tv_nsec = (interval % 1000) * 1000000;
+ } else {
+ ts.tv_sec = 1;
+ ts.tv_nsec = 0;
+ }
- perror(argv[0]);
- exit(-1);
+ if (forks) {
+ if (perf_evlist__prepare_workload(evsel_list, &target, argv,
+ false, false) < 0) {
+ perror("failed to prepare workload");
+ return -1;
}
-
- if (perf_target__none(&target))
- evsel_list->threads->map[0] = child_pid;
-
- /*
- * Wait for the child to be ready to exec.
- */
- close(child_ready_pipe[1]);
- close(go_pipe[0]);
- if (read(child_ready_pipe[0], &buf, 1) == -1)
- perror("unable to read pipe");
- close(child_ready_pipe[0]);
}
- first = list_entry(evsel_list->entries.next, struct perf_evsel, node);
+ if (group)
+ perf_evlist__set_leader(evsel_list);
list_for_each_entry(counter, &evsel_list->entries, node) {
- if (create_perf_stat_counter(counter, first) < 0) {
+ if (create_perf_stat_counter(counter) < 0) {
/*
* PPC returns ENXIO for HW counters until 2.6.37
* (behavior changed with commit b0a873e).
errno == ENXIO) {
if (verbose)
ui__warning("%s event is not supported by the kernel.\n",
- event_name(counter));
+ perf_evsel__name(counter));
counter->supported = false;
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);
- die("Not all events could be opened.\n");
+
return -1;
}
counter->supported = true;
}
- if (perf_evlist__set_filters(evsel_list)) {
+ if (perf_evlist__apply_filters(evsel_list)) {
error("failed to set filter with %d (%s)\n", errno,
strerror(errno));
return -1;
* Enable counters and exec the command:
*/
t0 = rdclock();
+ clock_gettime(CLOCK_MONOTONIC, &ref_time);
if (forks) {
- close(go_pipe[1]);
+ perf_evlist__start_workload(evsel_list);
+
+ 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();
update_stats(&walltime_nsecs_stats, t1 - t0);
- if (no_aggr) {
+ if (aggr_mode == AGGR_GLOBAL) {
list_for_each_entry(counter, &evsel_list->entries, node) {
- read_counter(counter);
- perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
+ read_counter_aggr(counter);
+ perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter),
+ thread_map__nr(evsel_list->threads));
}
} else {
list_for_each_entry(counter, &evsel_list->entries, node) {
- read_counter_aggr(counter);
- perf_evsel__close_fd(counter, evsel_list->cpus->nr,
- evsel_list->threads->nr);
+ read_counter(counter);
+ perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1);
}
}
return WEXITSTATUS(status);
}
-static void print_noise_pct(double total, double avg)
+static int run_perf_stat(int argc __maybe_unused, const char **argv)
{
- double pct = 0.0;
+ int ret;
+
+ if (pre_cmd) {
+ ret = system(pre_cmd);
+ if (ret)
+ return ret;
+ }
+
+ if (sync_run)
+ sync();
+
+ ret = __run_perf_stat(argc, argv);
+ if (ret)
+ return ret;
+
+ if (post_cmd) {
+ ret = system(post_cmd);
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
- if (avg)
- pct = 100.0*total/avg;
+static void print_noise_pct(double total, double avg)
+{
+ double pct = rel_stddev_stats(total, avg);
if (csv_output)
fprintf(output, "%s%.2f%%", csv_sep, pct);
print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
}
-static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
+static void aggr_printout(struct perf_evsel *evsel, int cpu, int nr)
+{
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ fprintf(output, "S%*d%s%*d%s",
+ csv_output ? 0 : -5,
+ cpu,
+ csv_sep,
+ csv_output ? 0 : 4,
+ nr,
+ csv_sep);
+ break;
+ case AGGR_NONE:
+ fprintf(output, "CPU%*d%s",
+ csv_output ? 0 : -4,
+ perf_evsel__cpus(evsel)->map[cpu], csv_sep);
+ break;
+ case AGGR_GLOBAL:
+ default:
+ break;
+ }
+}
+
+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";
+ const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
- if (no_aggr)
- sprintf(cpustr, "CPU%*d%s",
- csv_output ? 0 : -4,
- evsel_list->cpus->map[cpu], csv_sep);
+ aggr_printout(evsel, cpu, nr);
- fprintf(output, fmt, cpustr, msecs, csv_sep, event_name(evsel));
+ fprintf(output, fmt, msecs, csv_sep, perf_evsel__name(evsel));
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))
return color;
}
-static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg)
+static void print_stalled_cycles_frontend(int cpu,
+ struct perf_evsel *evsel
+ __maybe_unused, double avg)
{
double total, ratio = 0.0;
const char *color;
fprintf(output, " frontend cycles idle ");
}
-static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg)
+static void print_stalled_cycles_backend(int cpu,
+ struct perf_evsel *evsel
+ __maybe_unused, double avg)
{
double total, ratio = 0.0;
const char *color;
fprintf(output, " backend cycles idle ");
}
-static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg)
+static void print_branch_misses(int cpu,
+ struct perf_evsel *evsel __maybe_unused,
+ double avg)
{
double total, ratio = 0.0;
const char *color;
fprintf(output, " of all branches ");
}
-static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
+static void print_l1_dcache_misses(int cpu,
+ struct perf_evsel *evsel __maybe_unused,
+ double avg)
{
double total, ratio = 0.0;
const char *color;
fprintf(output, " of all L1-dcache hits ");
}
-static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
+static void print_l1_icache_misses(int cpu,
+ struct perf_evsel *evsel __maybe_unused,
+ double avg)
{
double total, ratio = 0.0;
const char *color;
fprintf(output, " of all L1-icache hits ");
}
-static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
+static void print_dtlb_cache_misses(int cpu,
+ struct perf_evsel *evsel __maybe_unused,
+ double avg)
{
double total, ratio = 0.0;
const char *color;
fprintf(output, " of all dTLB cache hits ");
}
-static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
+static void print_itlb_cache_misses(int cpu,
+ struct perf_evsel *evsel __maybe_unused,
+ double avg)
{
double total, ratio = 0.0;
const char *color;
fprintf(output, " of all iTLB cache hits ");
}
-static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
+static void print_ll_cache_misses(int cpu,
+ struct perf_evsel *evsel __maybe_unused,
+ double avg)
{
double total, ratio = 0.0;
const char *color;
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', };
const char *fmt;
if (csv_output)
- fmt = "%s%.0f%s%s";
+ fmt = "%.0f%s%s";
else if (big_num)
- fmt = "%s%'18.0f%s%-25s";
+ fmt = "%'18.0f%s%-25s";
else
- fmt = "%s%18.0f%s%-25s";
+ fmt = "%18.0f%s%-25s";
- if (no_aggr)
- sprintf(cpustr, "CPU%*d%s",
- csv_output ? 0 : -4,
- evsel_list->cpus->map[cpu], csv_sep);
- else
+ aggr_printout(evsel, cpu, nr);
+
+ if (aggr_mode == AGGR_GLOBAL)
cpu = 0;
- fprintf(output, fmt, cpustr, avg, csv_sep, event_name(evsel));
+ fprintf(output, fmt, avg, csv_sep, perf_evsel__name(evsel));
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;
}
}
+static void print_aggr(char *prefix)
+{
+ struct perf_evsel *counter;
+ int cpu, s, s2, id, nr;
+ u64 ena, run, val;
+
+ if (!(aggr_map || aggr_get_id))
+ return;
+
+ for (s = 0; s < aggr_map->nr; s++) {
+ id = aggr_map->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 = aggr_get_id(evsel_list->cpus, cpu);
+ if (s2 != id)
+ 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) {
+ aggr_printout(counter, cpu, nr);
+
+ fprintf(output, "%*s%s%*s",
+ 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(id, nr, counter, val);
+ else
+ abs_printout(id, 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,
counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
csv_sep,
csv_output ? 0 : -24,
- event_name(counter));
+ perf_evsel__name(counter));
if (counter->cgrp)
fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
}
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);
* 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;
- for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
+ for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
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,
- evsel_list->cpus->map[cpu], csv_sep,
+ perf_evsel__cpus(counter)->map[cpu], csv_sep,
csv_output ? 0 : 18,
counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
csv_sep,
csv_output ? 0 : -24,
- event_name(counter));
+ perf_evsel__name(counter));
if (counter->cgrp)
fprintf(output, "%s%s",
}
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);
fprintf(output, ":\n\n");
}
- if (no_aggr) {
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ print_aggr(NULL);
+ break;
+ case AGGR_GLOBAL:
list_for_each_entry(counter, &evsel_list->entries, node)
- print_counter(counter);
- } else {
+ print_counter_aggr(counter, NULL);
+ break;
+ case AGGR_NONE:
list_for_each_entry(counter, &evsel_list->entries, node)
- print_counter_aggr(counter);
+ print_counter(counter, NULL);
+ break;
+ default:
+ break;
}
if (!csv_output) {
static void skip_signal(int signo)
{
- if(child_pid == -1)
+ if ((child_pid == -1) || interval)
done = 1;
signr = signo;
kill(getpid(), signr);
}
-static const char * const stat_usage[] = {
- "perf stat [<options>] [<command>]",
- NULL
-};
-
-static int stat__set_big_num(const struct option *opt __used,
- const char *s __used, int unset)
+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;
return 0;
}
-static bool append_file;
+static int perf_stat_init_aggr_mode(void)
+{
+ switch (aggr_mode) {
+ case AGGR_SOCKET:
+ if (cpu_map__build_socket_map(evsel_list->cpus, &aggr_map)) {
+ perror("cannot build socket map");
+ return -1;
+ }
+ aggr_get_id = cpu_map__get_socket;
+ break;
+ case AGGR_NONE:
+ case AGGR_GLOBAL:
+ default:
+ break;
+ }
+ return 0;
+}
-static const struct option options[] = {
- OPT_CALLBACK('e', "event", &evsel_list, "event",
- "event selector. use 'perf list' to list available events",
- parse_events_option),
- OPT_CALLBACK(0, "filter", &evsel_list, "filter",
- "event filter", parse_filter),
- OPT_BOOLEAN('i', "no-inherit", &no_inherit,
- "child tasks do not inherit counters"),
- OPT_STRING('p', "pid", &target.pid, "pid",
- "stat events on existing process id"),
- OPT_STRING('t', "tid", &target.tid, "tid",
- "stat events on existing thread id"),
- OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
- "system-wide collection from all CPUs"),
- OPT_BOOLEAN('g', "group", &group,
- "put the counters into a counter group"),
- OPT_BOOLEAN('c', "scale", &scale,
- "scale/normalize counters"),
- OPT_INCR('v', "verbose", &verbose,
- "be more verbose (show counter open errors, etc)"),
- OPT_INTEGER('r', "repeat", &run_count,
- "repeat command and print average + stddev (max: 100)"),
- OPT_BOOLEAN('n', "null", &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_BOOLEAN('A', "no-aggr", &no_aggr,
- "disable CPU count aggregation"),
- OPT_STRING('x', "field-separator", &csv_sep, "separator",
- "print counts with custom separator"),
- OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
- "monitor event in cgroup name only",
- parse_cgroups),
- 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_END()
-};
/*
* Add default attributes, if there were no attributes specified or
*/
static int add_default_attributes(void)
{
+ struct perf_event_attr default_attrs[] = {
+
+ { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
+ { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
+ { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
+ { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
+
+ { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
+ { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
+ { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
+ { .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) },
+};
+
/* Set attrs if no event is selected and !null_run: */
if (null_run)
return 0;
if (!evsel_list->nr_entries) {
- if (perf_evlist__add_attrs_array(evsel_list, default_attrs) < 0)
+ if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
return -1;
}
return 0;
/* Append detailed run extra attributes: */
- if (perf_evlist__add_attrs_array(evsel_list, detailed_attrs) < 0)
+ if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
return -1;
if (detailed_run < 2)
return 0;
/* Append very detailed run extra attributes: */
- if (perf_evlist__add_attrs_array(evsel_list, very_detailed_attrs) < 0)
+ if (perf_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 perf_evlist__add_attrs_array(evsel_list, very_very_detailed_attrs);
+ return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
}
-int cmd_stat(int argc, const char **argv, const char *prefix __used)
+int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
{
- struct perf_evsel *pos;
- int status = -ENOMEM;
+ bool append_file = false;
+ int output_fd = 0;
+ const char *output_name = NULL;
+ const struct option options[] = {
+ OPT_CALLBACK('e', "event", &evsel_list, "event",
+ "event selector. use 'perf list' to list available events",
+ parse_events_option),
+ OPT_CALLBACK(0, "filter", &evsel_list, "filter",
+ "event filter", parse_filter),
+ OPT_BOOLEAN('i', "no-inherit", &no_inherit,
+ "child tasks do not inherit counters"),
+ OPT_STRING('p', "pid", &target.pid, "pid",
+ "stat events on existing process id"),
+ OPT_STRING('t', "tid", &target.tid, "tid",
+ "stat events on existing thread id"),
+ OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
+ "system-wide collection from all CPUs"),
+ OPT_BOOLEAN('g', "group", &group,
+ "put the counters into a counter group"),
+ OPT_BOOLEAN('c', "scale", &scale, "scale/normalize counters"),
+ OPT_INCR('v', "verbose", &verbose,
+ "be more verbose (show counter open errors, etc)"),
+ OPT_INTEGER('r', "repeat", &run_count,
+ "repeat command and print average + stddev (max: 100, forever: 0)"),
+ OPT_BOOLEAN('n', "null", &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", &aggr_mode,
+ "disable CPU count aggregation", AGGR_NONE),
+ OPT_STRING('x', "field-separator", &csv_sep, "separator",
+ "print counts with custom separator"),
+ OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
+ "monitor event in cgroup name only", parse_cgroups),
+ 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", &interval,
+ "print counts at regular interval in ms (>= 100)"),
+ OPT_SET_UINT(0, "aggr-socket", &aggr_mode,
+ "aggregate counts per processor socket", AGGR_SOCKET),
+ OPT_END()
+ };
+ const char * const stat_usage[] = {
+ "perf stat [<options>] [<command>]",
+ NULL
+ };
+ int status = -ENOMEM, run_idx;
const char *mode;
setlocale(LC_ALL, "");
- evsel_list = perf_evlist__new(NULL, NULL);
+ evsel_list = perf_evlist__new();
if (evsel_list == NULL)
return -ENOMEM;
fprintf(stderr, "cannot use both --output and --log-fd\n");
usage_with_options(stat_usage, options);
}
+
+ if (output_fd < 0) {
+ fprintf(stderr, "argument to --log-fd must be a > 0\n");
+ usage_with_options(stat_usage, options);
+ }
+
if (!output) {
struct timespec tm;
mode = append_file ? "a" : "w";
output = fopen(output_name, mode);
if (!output) {
perror("failed to create output file");
- exit(-1);
+ return -1;
}
clock_gettime(CLOCK_REALTIME, &tm);
fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
- } else if (output_fd != 2) {
+ } else if (output_fd > 0) {
mode = append_file ? "a" : "w";
output = fdopen(output_fd, mode);
if (!output) {
if (!argc && !perf_target__has_task(&target))
usage_with_options(stat_usage, options);
- if (run_count <= 0)
+ if (run_count < 0) {
usage_with_options(stat_usage, options);
+ } else if (run_count == 0) {
+ forever = true;
+ run_count = 1;
+ }
/* no_aggr, cgroup are for system-wide only */
- if ((no_aggr || nr_cgroups) && !perf_target__has_cpu(&target)) {
+ if ((aggr_mode != AGGR_GLOBAL || nr_cgroups)
+ && !perf_target__has_cpu(&target)) {
fprintf(stderr, "both cgroup and no-aggregation "
"modes only available in system-wide mode\n");
usage_with_options(stat_usage, options);
+ return -1;
}
if (add_default_attributes())
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, evsel_list->cpus->nr) < 0)
- goto out_free_fd;
+ if (interval && interval < 100) {
+ pr_err("print interval must be >= 100ms\n");
+ usage_with_options(stat_usage, options);
+ return -1;
}
+ if (perf_evlist__alloc_stats(evsel_list, interval))
+ goto out_free_maps;
+
+ if (perf_stat_init_aggr_mode())
+ goto out;
+
/*
* We dont want to block the signals - that would cause
* child tasks to inherit that and Ctrl-C would not work.
* task, but being ignored by perf stat itself:
*/
atexit(sig_atexit);
- signal(SIGINT, skip_signal);
+ if (!forever)
+ signal(SIGINT, skip_signal);
+ signal(SIGCHLD, skip_signal);
signal(SIGALRM, skip_signal);
signal(SIGABRT, skip_signal);
status = 0;
- for (run_idx = 0; run_idx < run_count; run_idx++) {
+ for (run_idx = 0; forever || run_idx < run_count; run_idx++) {
if (run_count != 1 && verbose)
fprintf(output, "[ perf stat: executing run #%d ... ]\n",
run_idx + 1);
- if (sync_run)
- sync();
-
status = run_perf_stat(argc, argv);
+ if (forever && status != -1) {
+ print_stat(argc, argv);
+ perf_stat__reset_stats(evsel_list);
+ }
}
- if (status != -1)
+ if (!forever && status != -1 && !interval)
print_stat(argc, argv);
-out_free_fd:
- list_for_each_entry(pos, &evsel_list->entries, node)
- perf_evsel__free_stat_priv(pos);
+
+ perf_evlist__free_stats(evsel_list);
+out_free_maps:
perf_evlist__delete_maps(evsel_list);
out:
perf_evlist__delete(evsel_list);