56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
#include "thread_map.h"
|
|
#include "evsel.h"
|
|
#include "debug.h"
|
|
#include "tests.h"
|
|
|
|
int test__open_syscall_event(void)
|
|
{
|
|
int err = -1, fd;
|
|
struct perf_evsel *evsel;
|
|
unsigned int nr_open_calls = 111, i;
|
|
struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX);
|
|
|
|
if (threads == NULL) {
|
|
pr_debug("thread_map__new\n");
|
|
return -1;
|
|
}
|
|
|
|
evsel = perf_evsel__newtp("syscalls", "sys_enter_open");
|
|
if (evsel == NULL) {
|
|
pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
|
|
goto out_thread_map_delete;
|
|
}
|
|
|
|
if (perf_evsel__open_per_thread(evsel, threads) < 0) {
|
|
pr_debug("failed to open counter: %s, "
|
|
"tweak /proc/sys/kernel/perf_event_paranoid?\n",
|
|
strerror(errno));
|
|
goto out_evsel_delete;
|
|
}
|
|
|
|
for (i = 0; i < nr_open_calls; ++i) {
|
|
fd = open("/etc/passwd", O_RDONLY);
|
|
close(fd);
|
|
}
|
|
|
|
if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) {
|
|
pr_debug("perf_evsel__read_on_cpu\n");
|
|
goto out_close_fd;
|
|
}
|
|
|
|
if (evsel->counts->cpu[0].val != nr_open_calls) {
|
|
pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n",
|
|
nr_open_calls, evsel->counts->cpu[0].val);
|
|
goto out_close_fd;
|
|
}
|
|
|
|
err = 0;
|
|
out_close_fd:
|
|
perf_evsel__close_fd(evsel, 1, threads->nr);
|
|
out_evsel_delete:
|
|
perf_evsel__delete(evsel);
|
|
out_thread_map_delete:
|
|
thread_map__delete(threads);
|
|
return err;
|
|
}
|