#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"
};
static bool system_wide = false;
-static int nr_cpus = 0;
+static struct cpu_map *cpus;
static int run_idx = 0;
static int run_count = 1;
static bool no_aggr = false;
static pid_t target_pid = -1;
static pid_t target_tid = -1;
-static pid_t *all_tids = NULL;
-static int thread_num = 0;
+static struct thread_map *threads;
static pid_t child_pid = -1;
static bool null_run = false;
static bool big_num = true;
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 {
- u64 val;
- u64 ena;
- u64 run;
-} cpu_counts[MAX_NR_CPUS][MAX_COUNTERS];
-
static volatile int done = 0;
struct stats
double n, mean, M2;
};
+struct perf_stat {
+ struct stats res_stats[3];
+};
+
+static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
+{
+ evsel->priv = zalloc(sizeof(struct perf_stat));
+ 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 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)
{
- struct perf_event_attr *attr = attrs + counter;
- int thread;
- int ncreated = 0;
+ struct perf_event_attr *attr = &evsel->attr;
if (scale)
attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
PERF_FORMAT_TOTAL_TIME_RUNNING;
- if (system_wide) {
- int cpu;
-
- for (cpu = 0; cpu < nr_cpus; cpu++) {
- fd[cpu][counter][0] = sys_perf_event_open(attr,
- -1, cpumap[cpu], -1, 0);
- if (fd[cpu][counter][0] < 0) {
- if (errno == EPERM || errno == EACCES)
- *perm_err = true;
- error(ERR_PERF_OPEN, counter,
- fd[cpu][counter][0], strerror(errno));
- } else {
- ++ncreated;
- }
- }
- } else {
- attr->inherit = !no_inherit;
- if (target_pid == -1 && target_tid == -1) {
- attr->disabled = 1;
- attr->enable_on_exec = 1;
- }
- for (thread = 0; thread < thread_num; thread++) {
- fd[0][counter][thread] = sys_perf_event_open(attr,
- all_tids[thread], -1, -1, 0);
- if (fd[0][counter][thread] < 0) {
- if (errno == EPERM || errno == EACCES)
- *perm_err = true;
- error(ERR_PERF_OPEN, counter,
- fd[0][counter][thread],
- strerror(errno));
- } else {
- ++ncreated;
- }
- }
+ if (system_wide)
+ return perf_evsel__open_per_cpu(evsel, cpus);
+
+ attr->inherit = !no_inherit;
+ if (target_pid == -1 && target_tid == -1) {
+ attr->disabled = 1;
+ attr->enable_on_exec = 1;
}
- return ncreated;
+ return perf_evsel__open_per_thread(evsel, threads);
}
/*
* Does the counter have nsecs as a unit?
*/
-static inline int nsec_counter(int counter)
+static inline int nsec_counter(struct perf_evsel *evsel)
{
- if (MATCH_EVENT(SOFTWARE, SW_CPU_CLOCK, counter) ||
- MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter))
+ if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
+ perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
return 1;
return 0;
* Read out the results of a single counter:
* aggregate counts across CPUs in system-wide mode
*/
-static void read_counter_aggr(int counter)
+static int read_counter_aggr(struct perf_evsel *counter)
{
- u64 count[3], single_count[3];
- int cpu;
- size_t res, nv;
- int scaled;
- int i, thread;
+ struct perf_stat *ps = counter->priv;
+ u64 *count = counter->counts->aggr.values;
+ int i;
- count[0] = count[1] = count[2] = 0;
-
- nv = scale ? 3 : 1;
- for (cpu = 0; cpu < nr_cpus; cpu++) {
- for (thread = 0; thread < thread_num; thread++) {
- if (fd[cpu][counter][thread] < 0)
- continue;
-
- res = read(fd[cpu][counter][thread],
- single_count, nv * sizeof(u64));
- assert(res == nv * sizeof(u64));
-
- close(fd[cpu][counter][thread]);
- fd[cpu][counter][thread] = -1;
-
- count[0] += single_count[0];
- if (scale) {
- count[1] += single_count[1];
- count[2] += single_count[2];
- }
- }
- }
-
- scaled = 0;
- if (scale) {
- if (count[2] == 0) {
- event_scaled[counter] = -1;
- count[0] = 0;
- return;
- }
-
- if (count[2] < count[1]) {
- event_scaled[counter] = 1;
- count[0] = (unsigned long long)
- ((double)count[0] * count[1] / count[2] + 0.5);
- }
- }
+ if (__perf_evsel__read(counter, cpus->nr, threads->nr, scale) < 0)
+ return -1;
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),
/*
* Save the full runtime - to allow normalization during printout:
*/
- if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter))
+ if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
update_stats(&runtime_nsecs_stats[0], count[0]);
- if (MATCH_EVENT(HARDWARE, HW_CPU_CYCLES, counter))
+ if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
update_stats(&runtime_cycles_stats[0], count[0]);
- if (MATCH_EVENT(HARDWARE, HW_BRANCH_INSTRUCTIONS, counter))
+ if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
update_stats(&runtime_branches_stats[0], count[0]);
+
+ return 0;
}
/*
* 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 int read_counter(struct perf_evsel *counter)
{
- u64 count[3];
+ u64 *count;
int cpu;
- size_t res, nv;
-
- count[0] = count[1] = count[2] = 0;
-
- nv = scale ? 3 : 1;
-
- for (cpu = 0; cpu < nr_cpus; cpu++) {
-
- if (fd[cpu][counter][0] < 0)
- continue;
-
- res = read(fd[cpu][counter][0], count, nv * sizeof(u64));
-
- assert(res == nv * sizeof(u64));
- close(fd[cpu][counter][0]);
- fd[cpu][counter][0] = -1;
+ for (cpu = 0; cpu < cpus->nr; cpu++) {
+ if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
+ return -1;
- if (scale) {
- if (count[2] == 0) {
- count[0] = 0;
- } else if (count[2] < count[1]) {
- count[0] = (unsigned long long)
- ((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];
+ count = counter->counts->cpu[cpu].values;
- if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter))
+ if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
update_stats(&runtime_nsecs_stats[cpu], count[0]);
- if (MATCH_EVENT(HARDWARE, HW_CPU_CYCLES, counter))
+ if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
update_stats(&runtime_cycles_stats[cpu], count[0]);
- if (MATCH_EVENT(HARDWARE, HW_BRANCH_INSTRUCTIONS, counter))
+ if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
update_stats(&runtime_branches_stats[cpu], count[0]);
}
+
+ return 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 child_ready_pipe[2], go_pipe[2];
- bool perm_err = false;
const bool forks = (argc > 0);
char buf;
- if (!system_wide)
- nr_cpus = 1;
-
if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
perror("failed to create pipes");
exit(1);
}
if (target_tid == -1 && target_pid == -1 && !system_wide)
- all_tids[0] = child_pid;
+ threads->map[0] = child_pid;
/*
* Wait for the child to be ready to exec.
close(child_ready_pipe[0]);
}
- for (counter = 0; counter < nr_counters; counter++)
- ncreated += create_perf_stat_counter(counter, &perm_err);
-
- if (ncreated < nr_counters) {
- if (perm_err)
- error("You may not have permission to collect %sstats.\n"
- "\t Consider tweaking"
- " /proc/sys/kernel/perf_event_paranoid or running as root.",
- system_wide ? "system-wide " : "");
- die("Not all events could be opened.\n");
- if (child_pid != -1)
- kill(child_pid, SIGTERM);
- return -1;
+ list_for_each_entry(counter, &evsel_list, node) {
+ if (create_perf_stat_counter(counter) < 0) {
+ 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.",
+ system_wide ? "system-wide " : "");
+ } else if (errno == ENOENT) {
+ error("%s event is not supported. ", event_name(counter));
+ } else {
+ error("open_counter returned with %d (%s). "
+ "/bin/dmesg may provide additional information.\n",
+ errno, strerror(errno));
+ }
+ if (child_pid != -1)
+ kill(child_pid, SIGTERM);
+ die("Not all events could be opened.\n");
+ return -1;
+ }
}
/*
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);
+ perf_evsel__close_fd(counter, cpus->nr, 1);
+ }
} else {
- for (counter = 0; counter < nr_counters; counter++)
+ list_for_each_entry(counter, &evsel_list, node) {
read_counter_aggr(counter);
+ perf_evsel__close_fd(counter, cpus->nr, threads->nr);
+ }
}
+
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 *evsel, double avg)
{
double msecs = avg / 1e6;
char cpustr[16] = { '\0', };
if (no_aggr)
sprintf(cpustr, "CPU%*d%s",
csv_output ? 0 : -4,
- cpumap[cpu], csv_sep);
+ cpus->map[cpu], csv_sep);
- fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(counter));
+ fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(evsel));
if (csv_output)
return;
- if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) {
+ if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
fprintf(stderr, " # %10.3f CPUs ",
avg / avg_stats(&walltime_nsecs_stats));
- }
}
-static void abs_printout(int cpu, int counter, double avg)
+static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
{
double total, ratio = 0.0;
char cpustr[16] = { '\0', };
if (no_aggr)
sprintf(cpustr, "CPU%*d%s",
csv_output ? 0 : -4,
- cpumap[cpu], csv_sep);
+ cpus->map[cpu], csv_sep);
else
cpu = 0;
- fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(counter));
+ fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(evsel));
if (csv_output)
return;
- if (MATCH_EVENT(HARDWARE, HW_INSTRUCTIONS, counter)) {
+ if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
total = avg_stats(&runtime_cycles_stats[cpu]);
if (total)
ratio = avg / total;
fprintf(stderr, " # %10.3f IPC ", ratio);
- } else if (MATCH_EVENT(HARDWARE, HW_BRANCH_MISSES, counter) &&
+ } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
runtime_branches_stats[cpu].n != 0) {
total = avg_stats(&runtime_branches_stats[cpu]);
* 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 = counter->counts->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)
{
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;
+ for (cpu = 0; cpu < cpus->nr; cpu++) {
+ val = counter->counts->cpu[cpu].val;
+ ena = counter->counts->cpu[cpu].ena;
+ run = counter->counts->cpu[cpu].run;
if (run == 0 || ena == 0) {
fprintf(stderr, "CPU%*d%s%*s%s%-24s",
csv_output ? 0 : -4,
- cpumap[cpu], csv_sep,
+ cpus->map[cpu], csv_sep,
csv_output ? 0 : 18,
"<not counted>", csv_sep,
event_name(counter));
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],
+ nr_counters);
+ if (pos == NULL)
+ goto out;
+ list_add(&pos->node, &evsel_list);
+ }
}
- if (system_wide)
- nr_cpus = read_cpu_map(cpu_list);
- else
- nr_cpus = 1;
+ if (target_pid != -1)
+ target_tid = target_pid;
- if (nr_cpus < 1)
+ threads = thread_map__new(target_pid, target_tid);
+ if (threads == NULL) {
+ pr_err("Problems finding threads of monitor\n");
usage_with_options(stat_usage, options);
+ }
- if (target_pid != -1) {
- target_tid = target_pid;
- thread_num = find_all_tid(target_pid, &all_tids);
- if (thread_num <= 0) {
- fprintf(stderr, "Can't find all threads of pid %d\n",
- target_pid);
- usage_with_options(stat_usage, options);
- }
- } else {
- all_tids=malloc(sizeof(pid_t));
- if (!all_tids)
- return -ENOMEM;
+ if (system_wide)
+ cpus = cpu_map__new(cpu_list);
+ else
+ cpus = cpu_map__dummy_new();
- all_tids[0] = target_tid;
- thread_num = 1;
+ if (cpus == NULL) {
+ perror("failed to parse CPUs map");
+ usage_with_options(stat_usage, options);
+ return -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) < 0 ||
+ perf_evsel__alloc_counts(pos, cpus->nr) < 0 ||
+ perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 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_stat_priv(pos);
+ perf_evsel_list__delete();
+out:
+ thread_map__delete(threads);
+ threads = NULL;
return status;
}
projects / karo-tx-linux.git / blobdiff