#include "util/parse-options.h"
#include "util/parse-events.h"
#include "util/event.h"
+#include "util/evsel.h"
#include "util/debug.h"
#include "util/header.h"
#include "util/cpumap.h"
#include <math.h>
#include <locale.h>
+#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
+
#define DEFAULT_SEPARATOR " "
static struct perf_event_attr default_attrs[] = {
static const char *csv_sep = NULL;
static bool csv_output = false;
-
-static int *fd[MAX_NR_CPUS][MAX_COUNTERS];
-
-static int event_scaled[MAX_COUNTERS];
-
-static struct {
+struct cpu_counts {
u64 val;
u64 ena;
u64 run;
-} cpu_counts[MAX_NR_CPUS][MAX_COUNTERS];
+};
static volatile int done = 0;
double n, mean, M2;
};
+struct perf_stat {
+ struct stats res_stats[3];
+ int scaled;
+ struct cpu_counts cpu_counts[];
+};
+
+static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel, int ncpus)
+{
+ size_t priv_size = (sizeof(struct perf_stat) +
+ (ncpus * sizeof(struct cpu_counts)));
+ evsel->priv = zalloc(priv_size);
+ return evsel->priv == NULL ? -ENOMEM : 0;
+}
+
+static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
+{
+ free(evsel->priv);
+ evsel->priv = NULL;
+}
+
static void update_stats(struct stats *stats, u64 val)
{
double delta;
return sqrt(variance_mean);
}
-struct stats event_res_stats[MAX_COUNTERS][3];
struct stats runtime_nsecs_stats[MAX_NR_CPUS];
struct stats runtime_cycles_stats[MAX_NR_CPUS];
struct stats runtime_branches_stats[MAX_NR_CPUS];
struct stats walltime_nsecs_stats;
-#define MATCH_EVENT(t, c, counter) \
- (attrs[counter].type == PERF_TYPE_##t && \
- attrs[counter].config == PERF_COUNT_##c)
+#define MATCH_EVENT(t, c, evsel) \
+ (evsel->attr.type == PERF_TYPE_##t && \
+ evsel->attr.config == PERF_COUNT_##c)
#define ERR_PERF_OPEN \
"counter %d, sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information."
-static int create_perf_stat_counter(int counter, bool *perm_err)
+static int create_perf_stat_counter(struct perf_evsel *evsel, bool *perm_err)
{
- struct perf_event_attr *attr = attrs + counter;
+ struct perf_event_attr *attr = &evsel->attr;
int thread;
int ncreated = 0;
int cpu;
for (cpu = 0; cpu < nr_cpus; cpu++) {
- fd[cpu][counter][0] = sys_perf_event_open(attr,
+ FD(evsel, cpu, 0) = sys_perf_event_open(attr,
-1, cpumap[cpu], -1, 0);
- if (fd[cpu][counter][0] < 0) {
+ if (FD(evsel, cpu, 0) < 0) {
if (errno == EPERM || errno == EACCES)
*perm_err = true;
- error(ERR_PERF_OPEN, counter,
- fd[cpu][counter][0], strerror(errno));
+ error(ERR_PERF_OPEN, evsel->idx,
+ FD(evsel, cpu, 0), strerror(errno));
} else {
++ncreated;
}
attr->enable_on_exec = 1;
}
for (thread = 0; thread < thread_num; thread++) {
- fd[0][counter][thread] = sys_perf_event_open(attr,
+ FD(evsel, 0, thread) = sys_perf_event_open(attr,
all_tids[thread], -1, -1, 0);
- if (fd[0][counter][thread] < 0) {
+ if (FD(evsel, 0, thread) < 0) {
if (errno == EPERM || errno == EACCES)
*perm_err = true;
- error(ERR_PERF_OPEN, counter,
- fd[0][counter][thread],
+ error(ERR_PERF_OPEN, evsel->idx,
+ FD(evsel, 0, thread),
strerror(errno));
} else {
++ncreated;
/*
* Does the counter have nsecs as a unit?
*/
-static inline int nsec_counter(int counter)
+static inline int nsec_counter(struct perf_evsel *counter)
{
if (MATCH_EVENT(SOFTWARE, SW_CPU_CLOCK, counter) ||
MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter))
* Read out the results of a single counter:
* aggregate counts across CPUs in system-wide mode
*/
-static void read_counter_aggr(int counter)
+static void read_counter_aggr(struct perf_evsel *counter)
{
+ struct perf_stat *ps = counter->priv;
u64 count[3], single_count[3];
int cpu;
size_t res, nv;
nv = scale ? 3 : 1;
for (cpu = 0; cpu < nr_cpus; cpu++) {
for (thread = 0; thread < thread_num; thread++) {
- if (fd[cpu][counter][thread] < 0)
+ if (FD(counter, cpu, thread) < 0)
continue;
- res = read(fd[cpu][counter][thread],
+ res = read(FD(counter, cpu, thread),
single_count, nv * sizeof(u64));
assert(res == nv * sizeof(u64));
- close(fd[cpu][counter][thread]);
- fd[cpu][counter][thread] = -1;
+ close(FD(counter, cpu, thread));
+ FD(counter, cpu, thread) = -1;
count[0] += single_count[0];
if (scale) {
scaled = 0;
if (scale) {
if (count[2] == 0) {
- event_scaled[counter] = -1;
+ ps->scaled = -1;
count[0] = 0;
return;
}
if (count[2] < count[1]) {
- event_scaled[counter] = 1;
+ ps->scaled = 1;
count[0] = (unsigned long long)
((double)count[0] * count[1] / count[2] + 0.5);
}
}
for (i = 0; i < 3; i++)
- update_stats(&event_res_stats[counter][i], count[i]);
+ update_stats(&ps->res_stats[i], count[i]);
if (verbose) {
fprintf(stderr, "%s: %Ld %Ld %Ld\n", event_name(counter),
* Read out the results of a single counter:
* do not aggregate counts across CPUs in system-wide mode
*/
-static void read_counter(int counter)
+static void read_counter(struct perf_evsel *counter)
{
+ struct cpu_counts *cpu_counts = counter->priv;
u64 count[3];
int cpu;
size_t res, nv;
for (cpu = 0; cpu < nr_cpus; cpu++) {
- if (fd[cpu][counter][0] < 0)
+ if (FD(counter, cpu, 0) < 0)
continue;
- res = read(fd[cpu][counter][0], count, nv * sizeof(u64));
+ res = read(FD(counter, cpu, 0), count, nv * sizeof(u64));
assert(res == nv * sizeof(u64));
- close(fd[cpu][counter][0]);
- fd[cpu][counter][0] = -1;
+ close(FD(counter, cpu, 0));
+ FD(counter, cpu, 0) = -1;
if (scale) {
if (count[2] == 0) {
((double)count[0] * count[1] / count[2] + 0.5);
}
}
- cpu_counts[cpu][counter].val = count[0]; /* scaled count */
- cpu_counts[cpu][counter].ena = count[1];
- cpu_counts[cpu][counter].run = count[2];
+ cpu_counts[cpu].val = count[0]; /* scaled count */
+ cpu_counts[cpu].ena = count[1];
+ cpu_counts[cpu].run = count[2];
if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter))
update_stats(&runtime_nsecs_stats[cpu], count[0]);
static int run_perf_stat(int argc __used, const char **argv)
{
unsigned long long t0, t1;
+ struct perf_evsel *counter;
int status = 0;
- int counter, ncreated = 0;
+ int ncreated = 0;
int child_ready_pipe[2], go_pipe[2];
bool perm_err = false;
const bool forks = (argc > 0);
close(child_ready_pipe[0]);
}
- for (counter = 0; counter < nr_counters; counter++)
+ list_for_each_entry(counter, &evsel_list, node)
ncreated += create_perf_stat_counter(counter, &perm_err);
if (ncreated < nr_counters) {
update_stats(&walltime_nsecs_stats, t1 - t0);
if (no_aggr) {
- for (counter = 0; counter < nr_counters; counter++)
+ list_for_each_entry(counter, &evsel_list, node)
read_counter(counter);
} else {
- for (counter = 0; counter < nr_counters; counter++)
+ list_for_each_entry(counter, &evsel_list, node)
read_counter_aggr(counter);
}
return WEXITSTATUS(status);
}
-static void print_noise(int counter, double avg)
+static void print_noise(struct perf_evsel *evsel, double avg)
{
+ struct perf_stat *ps;
+
if (run_count == 1)
return;
+ ps = evsel->priv;
fprintf(stderr, " ( +- %7.3f%% )",
- 100 * stddev_stats(&event_res_stats[counter][0]) / avg);
+ 100 * stddev_stats(&ps->res_stats[0]) / avg);
}
-static void nsec_printout(int cpu, int counter, double avg)
+static void nsec_printout(int cpu, struct perf_evsel *counter, double avg)
{
double msecs = avg / 1e6;
char cpustr[16] = { '\0', };
}
}
-static void abs_printout(int cpu, int counter, double avg)
+static void abs_printout(int cpu, struct perf_evsel *counter, double avg)
{
double total, ratio = 0.0;
char cpustr[16] = { '\0', };
* Print out the results of a single counter:
* aggregated counts in system-wide mode
*/
-static void print_counter_aggr(int counter)
+static void print_counter_aggr(struct perf_evsel *counter)
{
- double avg = avg_stats(&event_res_stats[counter][0]);
- int scaled = event_scaled[counter];
+ struct perf_stat *ps = counter->priv;
+ double avg = avg_stats(&ps->res_stats[0]);
+ int scaled = ps->scaled;
if (scaled == -1) {
fprintf(stderr, "%*s%s%-24s\n",
if (scaled) {
double avg_enabled, avg_running;
- avg_enabled = avg_stats(&event_res_stats[counter][1]);
- avg_running = avg_stats(&event_res_stats[counter][2]);
+ avg_enabled = avg_stats(&ps->res_stats[1]);
+ avg_running = avg_stats(&ps->res_stats[2]);
fprintf(stderr, " (scaled from %.2f%%)",
100 * avg_running / avg_enabled);
* Print out the results of a single counter:
* does not use aggregated count in system-wide
*/
-static void print_counter(int counter)
+static void print_counter(struct perf_evsel *counter)
{
+ struct perf_stat *ps = counter->priv;
u64 ena, run, val;
int cpu;
for (cpu = 0; cpu < nr_cpus; cpu++) {
- val = cpu_counts[cpu][counter].val;
- ena = cpu_counts[cpu][counter].ena;
- run = cpu_counts[cpu][counter].run;
+ val = ps->cpu_counts[cpu].val;
+ ena = ps->cpu_counts[cpu].ena;
+ run = ps->cpu_counts[cpu].run;
if (run == 0 || ena == 0) {
fprintf(stderr, "CPU%*d%s%*s%s%-24s",
csv_output ? 0 : -4,
static void print_stat(int argc, const char **argv)
{
- int i, counter;
+ struct perf_evsel *counter;
+ int i;
fflush(stdout);
}
if (no_aggr) {
- for (counter = 0; counter < nr_counters; counter++)
+ list_for_each_entry(counter, &evsel_list, node)
print_counter(counter);
} else {
- for (counter = 0; counter < nr_counters; counter++)
+ list_for_each_entry(counter, &evsel_list, node)
print_counter_aggr(counter);
}
int cmd_stat(int argc, const char **argv, const char *prefix __used)
{
- int status;
- int i,j;
+ struct perf_evsel *pos;
+ int status = -ENOMEM;
setlocale(LC_ALL, "");
/* Set attrs and nr_counters if no event is selected and !null_run */
if (!null_run && !nr_counters) {
- memcpy(attrs, default_attrs, sizeof(default_attrs));
+ size_t c;
+
nr_counters = ARRAY_SIZE(default_attrs);
+
+ for (c = 0; c < ARRAY_SIZE(default_attrs); ++c) {
+ pos = perf_evsel__new(default_attrs[c].type,
+ default_attrs[c].config,
+ nr_counters);
+ if (pos == NULL)
+ goto out;
+ list_add(&pos->node, &evsel_list);
+ }
}
if (system_wide)
thread_num = 1;
}
- for (i = 0; i < MAX_NR_CPUS; i++) {
- for (j = 0; j < MAX_COUNTERS; j++) {
- fd[i][j] = malloc(sizeof(int)*thread_num);
- if (!fd[i][j])
- return -ENOMEM;
- }
+ list_for_each_entry(pos, &evsel_list, node) {
+ if (perf_evsel__alloc_stat_priv(pos, nr_cpus) < 0 ||
+ perf_evsel__alloc_fd(pos, nr_cpus, thread_num) < 0)
+ goto out_free_fd;
}
/*
if (status != -1)
print_stat(argc, argv);
-
+out_free_fd:
+ list_for_each_entry(pos, &evsel_list, node) {
+ perf_evsel__free_fd(pos);
+ perf_evsel__free_stat_priv(pos);
+ }
+out:
return status;
}
projects / mirror_ubuntu-zesty-kernel.git / blobdiff