431 lines
9.7 KiB
C
431 lines
9.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#define _GNU_SOURCE // needed for sched.h to get sched_[gs]etaffinity and CPU_(ZERO,SET)
|
|
#include <sched.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <linux/perf_event.h>
|
|
#include <linux/limits.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/prctl.h>
|
|
#include <perf/cpumap.h>
|
|
#include <perf/threadmap.h>
|
|
#include <perf/evlist.h>
|
|
#include <perf/evsel.h>
|
|
#include <perf/mmap.h>
|
|
#include <perf/event.h>
|
|
#include <internal/tests.h>
|
|
#include <api/fs/fs.h>
|
|
#include "tests.h"
|
|
#include <internal/evsel.h>
|
|
|
|
static int libperf_print(enum libperf_print_level level,
|
|
const char *fmt, va_list ap)
|
|
{
|
|
return vfprintf(stderr, fmt, ap);
|
|
}
|
|
|
|
static int test_stat_cpu(void)
|
|
{
|
|
struct perf_cpu_map *cpus;
|
|
struct perf_evlist *evlist;
|
|
struct perf_evsel *evsel, *leader;
|
|
struct perf_event_attr attr1 = {
|
|
.type = PERF_TYPE_SOFTWARE,
|
|
.config = PERF_COUNT_SW_CPU_CLOCK,
|
|
};
|
|
struct perf_event_attr attr2 = {
|
|
.type = PERF_TYPE_SOFTWARE,
|
|
.config = PERF_COUNT_SW_TASK_CLOCK,
|
|
};
|
|
int err, cpu, tmp;
|
|
|
|
cpus = perf_cpu_map__new(NULL);
|
|
__T("failed to create cpus", cpus);
|
|
|
|
evlist = perf_evlist__new();
|
|
__T("failed to create evlist", evlist);
|
|
|
|
evsel = leader = perf_evsel__new(&attr1);
|
|
__T("failed to create evsel1", evsel);
|
|
|
|
perf_evlist__add(evlist, evsel);
|
|
|
|
evsel = perf_evsel__new(&attr2);
|
|
__T("failed to create evsel2", evsel);
|
|
|
|
perf_evlist__add(evlist, evsel);
|
|
|
|
perf_evlist__set_leader(evlist);
|
|
__T("failed to set leader", leader->leader == leader);
|
|
__T("failed to set leader", evsel->leader == leader);
|
|
|
|
perf_evlist__set_maps(evlist, cpus, NULL);
|
|
|
|
err = perf_evlist__open(evlist);
|
|
__T("failed to open evsel", err == 0);
|
|
|
|
perf_evlist__for_each_evsel(evlist, evsel) {
|
|
cpus = perf_evsel__cpus(evsel);
|
|
|
|
perf_cpu_map__for_each_cpu(cpu, tmp, cpus) {
|
|
struct perf_counts_values counts = { .val = 0 };
|
|
|
|
perf_evsel__read(evsel, cpu, 0, &counts);
|
|
__T("failed to read value for evsel", counts.val != 0);
|
|
}
|
|
}
|
|
|
|
perf_evlist__close(evlist);
|
|
perf_evlist__delete(evlist);
|
|
|
|
perf_cpu_map__put(cpus);
|
|
return 0;
|
|
}
|
|
|
|
static int test_stat_thread(void)
|
|
{
|
|
struct perf_counts_values counts = { .val = 0 };
|
|
struct perf_thread_map *threads;
|
|
struct perf_evlist *evlist;
|
|
struct perf_evsel *evsel, *leader;
|
|
struct perf_event_attr attr1 = {
|
|
.type = PERF_TYPE_SOFTWARE,
|
|
.config = PERF_COUNT_SW_CPU_CLOCK,
|
|
};
|
|
struct perf_event_attr attr2 = {
|
|
.type = PERF_TYPE_SOFTWARE,
|
|
.config = PERF_COUNT_SW_TASK_CLOCK,
|
|
};
|
|
int err;
|
|
|
|
threads = perf_thread_map__new_dummy();
|
|
__T("failed to create threads", threads);
|
|
|
|
perf_thread_map__set_pid(threads, 0, 0);
|
|
|
|
evlist = perf_evlist__new();
|
|
__T("failed to create evlist", evlist);
|
|
|
|
evsel = leader = perf_evsel__new(&attr1);
|
|
__T("failed to create evsel1", evsel);
|
|
|
|
perf_evlist__add(evlist, evsel);
|
|
|
|
evsel = perf_evsel__new(&attr2);
|
|
__T("failed to create evsel2", evsel);
|
|
|
|
perf_evlist__add(evlist, evsel);
|
|
|
|
perf_evlist__set_leader(evlist);
|
|
__T("failed to set leader", leader->leader == leader);
|
|
__T("failed to set leader", evsel->leader == leader);
|
|
|
|
perf_evlist__set_maps(evlist, NULL, threads);
|
|
|
|
err = perf_evlist__open(evlist);
|
|
__T("failed to open evsel", err == 0);
|
|
|
|
perf_evlist__for_each_evsel(evlist, evsel) {
|
|
perf_evsel__read(evsel, 0, 0, &counts);
|
|
__T("failed to read value for evsel", counts.val != 0);
|
|
}
|
|
|
|
perf_evlist__close(evlist);
|
|
perf_evlist__delete(evlist);
|
|
|
|
perf_thread_map__put(threads);
|
|
return 0;
|
|
}
|
|
|
|
static int test_stat_thread_enable(void)
|
|
{
|
|
struct perf_counts_values counts = { .val = 0 };
|
|
struct perf_thread_map *threads;
|
|
struct perf_evlist *evlist;
|
|
struct perf_evsel *evsel, *leader;
|
|
struct perf_event_attr attr1 = {
|
|
.type = PERF_TYPE_SOFTWARE,
|
|
.config = PERF_COUNT_SW_CPU_CLOCK,
|
|
.disabled = 1,
|
|
};
|
|
struct perf_event_attr attr2 = {
|
|
.type = PERF_TYPE_SOFTWARE,
|
|
.config = PERF_COUNT_SW_TASK_CLOCK,
|
|
.disabled = 1,
|
|
};
|
|
int err;
|
|
|
|
threads = perf_thread_map__new_dummy();
|
|
__T("failed to create threads", threads);
|
|
|
|
perf_thread_map__set_pid(threads, 0, 0);
|
|
|
|
evlist = perf_evlist__new();
|
|
__T("failed to create evlist", evlist);
|
|
|
|
evsel = leader = perf_evsel__new(&attr1);
|
|
__T("failed to create evsel1", evsel);
|
|
|
|
perf_evlist__add(evlist, evsel);
|
|
|
|
evsel = perf_evsel__new(&attr2);
|
|
__T("failed to create evsel2", evsel);
|
|
|
|
perf_evlist__add(evlist, evsel);
|
|
|
|
perf_evlist__set_leader(evlist);
|
|
__T("failed to set leader", leader->leader == leader);
|
|
__T("failed to set leader", evsel->leader == leader);
|
|
|
|
perf_evlist__set_maps(evlist, NULL, threads);
|
|
|
|
err = perf_evlist__open(evlist);
|
|
__T("failed to open evsel", err == 0);
|
|
|
|
perf_evlist__for_each_evsel(evlist, evsel) {
|
|
perf_evsel__read(evsel, 0, 0, &counts);
|
|
__T("failed to read value for evsel", counts.val == 0);
|
|
}
|
|
|
|
perf_evlist__enable(evlist);
|
|
|
|
perf_evlist__for_each_evsel(evlist, evsel) {
|
|
perf_evsel__read(evsel, 0, 0, &counts);
|
|
__T("failed to read value for evsel", counts.val != 0);
|
|
}
|
|
|
|
perf_evlist__disable(evlist);
|
|
|
|
perf_evlist__close(evlist);
|
|
perf_evlist__delete(evlist);
|
|
|
|
perf_thread_map__put(threads);
|
|
return 0;
|
|
}
|
|
|
|
static int test_mmap_thread(void)
|
|
{
|
|
struct perf_evlist *evlist;
|
|
struct perf_evsel *evsel;
|
|
struct perf_mmap *map;
|
|
struct perf_cpu_map *cpus;
|
|
struct perf_thread_map *threads;
|
|
struct perf_event_attr attr = {
|
|
.type = PERF_TYPE_TRACEPOINT,
|
|
.sample_period = 1,
|
|
.wakeup_watermark = 1,
|
|
.disabled = 1,
|
|
};
|
|
char path[PATH_MAX];
|
|
int id, err, pid, go_pipe[2];
|
|
union perf_event *event;
|
|
int count = 0;
|
|
|
|
snprintf(path, PATH_MAX, "%s/kernel/debug/tracing/events/syscalls/sys_enter_prctl/id",
|
|
sysfs__mountpoint());
|
|
|
|
if (filename__read_int(path, &id)) {
|
|
tests_failed++;
|
|
fprintf(stderr, "error: failed to get tracepoint id: %s\n", path);
|
|
return -1;
|
|
}
|
|
|
|
attr.config = id;
|
|
|
|
err = pipe(go_pipe);
|
|
__T("failed to create pipe", err == 0);
|
|
|
|
fflush(NULL);
|
|
|
|
pid = fork();
|
|
if (!pid) {
|
|
int i;
|
|
char bf;
|
|
|
|
read(go_pipe[0], &bf, 1);
|
|
|
|
/* Generate 100 prctl calls. */
|
|
for (i = 0; i < 100; i++)
|
|
prctl(0, 0, 0, 0, 0);
|
|
|
|
exit(0);
|
|
}
|
|
|
|
threads = perf_thread_map__new_dummy();
|
|
__T("failed to create threads", threads);
|
|
|
|
cpus = perf_cpu_map__dummy_new();
|
|
__T("failed to create cpus", cpus);
|
|
|
|
perf_thread_map__set_pid(threads, 0, pid);
|
|
|
|
evlist = perf_evlist__new();
|
|
__T("failed to create evlist", evlist);
|
|
|
|
evsel = perf_evsel__new(&attr);
|
|
__T("failed to create evsel1", evsel);
|
|
__T("failed to set leader", evsel->leader == evsel);
|
|
|
|
perf_evlist__add(evlist, evsel);
|
|
|
|
perf_evlist__set_maps(evlist, cpus, threads);
|
|
|
|
err = perf_evlist__open(evlist);
|
|
__T("failed to open evlist", err == 0);
|
|
|
|
err = perf_evlist__mmap(evlist, 4);
|
|
__T("failed to mmap evlist", err == 0);
|
|
|
|
perf_evlist__enable(evlist);
|
|
|
|
/* kick the child and wait for it to finish */
|
|
write(go_pipe[1], "A", 1);
|
|
waitpid(pid, NULL, 0);
|
|
|
|
/*
|
|
* There's no need to call perf_evlist__disable,
|
|
* monitored process is dead now.
|
|
*/
|
|
|
|
perf_evlist__for_each_mmap(evlist, map, false) {
|
|
if (perf_mmap__read_init(map) < 0)
|
|
continue;
|
|
|
|
while ((event = perf_mmap__read_event(map)) != NULL) {
|
|
count++;
|
|
perf_mmap__consume(map);
|
|
}
|
|
|
|
perf_mmap__read_done(map);
|
|
}
|
|
|
|
/* calls perf_evlist__munmap/perf_evlist__close */
|
|
perf_evlist__delete(evlist);
|
|
|
|
perf_thread_map__put(threads);
|
|
perf_cpu_map__put(cpus);
|
|
|
|
/*
|
|
* The generated prctl calls should match the
|
|
* number of events in the buffer.
|
|
*/
|
|
__T("failed count", count == 100);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int test_mmap_cpus(void)
|
|
{
|
|
struct perf_evlist *evlist;
|
|
struct perf_evsel *evsel;
|
|
struct perf_mmap *map;
|
|
struct perf_cpu_map *cpus;
|
|
struct perf_event_attr attr = {
|
|
.type = PERF_TYPE_TRACEPOINT,
|
|
.sample_period = 1,
|
|
.wakeup_watermark = 1,
|
|
.disabled = 1,
|
|
};
|
|
cpu_set_t saved_mask;
|
|
char path[PATH_MAX];
|
|
int id, err, cpu, tmp;
|
|
union perf_event *event;
|
|
int count = 0;
|
|
|
|
snprintf(path, PATH_MAX, "%s/kernel/debug/tracing/events/syscalls/sys_enter_prctl/id",
|
|
sysfs__mountpoint());
|
|
|
|
if (filename__read_int(path, &id)) {
|
|
fprintf(stderr, "error: failed to get tracepoint id: %s\n", path);
|
|
return -1;
|
|
}
|
|
|
|
attr.config = id;
|
|
|
|
cpus = perf_cpu_map__new(NULL);
|
|
__T("failed to create cpus", cpus);
|
|
|
|
evlist = perf_evlist__new();
|
|
__T("failed to create evlist", evlist);
|
|
|
|
evsel = perf_evsel__new(&attr);
|
|
__T("failed to create evsel1", evsel);
|
|
__T("failed to set leader", evsel->leader == evsel);
|
|
|
|
perf_evlist__add(evlist, evsel);
|
|
|
|
perf_evlist__set_maps(evlist, cpus, NULL);
|
|
|
|
err = perf_evlist__open(evlist);
|
|
__T("failed to open evlist", err == 0);
|
|
|
|
err = perf_evlist__mmap(evlist, 4);
|
|
__T("failed to mmap evlist", err == 0);
|
|
|
|
perf_evlist__enable(evlist);
|
|
|
|
err = sched_getaffinity(0, sizeof(saved_mask), &saved_mask);
|
|
__T("sched_getaffinity failed", err == 0);
|
|
|
|
perf_cpu_map__for_each_cpu(cpu, tmp, cpus) {
|
|
cpu_set_t mask;
|
|
|
|
CPU_ZERO(&mask);
|
|
CPU_SET(cpu, &mask);
|
|
|
|
err = sched_setaffinity(0, sizeof(mask), &mask);
|
|
__T("sched_setaffinity failed", err == 0);
|
|
|
|
prctl(0, 0, 0, 0, 0);
|
|
}
|
|
|
|
err = sched_setaffinity(0, sizeof(saved_mask), &saved_mask);
|
|
__T("sched_setaffinity failed", err == 0);
|
|
|
|
perf_evlist__disable(evlist);
|
|
|
|
perf_evlist__for_each_mmap(evlist, map, false) {
|
|
if (perf_mmap__read_init(map) < 0)
|
|
continue;
|
|
|
|
while ((event = perf_mmap__read_event(map)) != NULL) {
|
|
count++;
|
|
perf_mmap__consume(map);
|
|
}
|
|
|
|
perf_mmap__read_done(map);
|
|
}
|
|
|
|
/* calls perf_evlist__munmap/perf_evlist__close */
|
|
perf_evlist__delete(evlist);
|
|
|
|
/*
|
|
* The generated prctl events should match the
|
|
* number of cpus or be bigger (we are system-wide).
|
|
*/
|
|
__T("failed count", count >= perf_cpu_map__nr(cpus));
|
|
|
|
perf_cpu_map__put(cpus);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int test_evlist(int argc, char **argv)
|
|
{
|
|
__T_START;
|
|
|
|
libperf_init(libperf_print);
|
|
|
|
test_stat_cpu();
|
|
test_stat_thread();
|
|
test_stat_thread_enable();
|
|
test_mmap_thread();
|
|
test_mmap_cpus();
|
|
|
|
__T_END;
|
|
return tests_failed == 0 ? 0 : -1;
|
|
}
|