fbb2df231e
Since the test being tested is now openat rather than open, rename the files to make it explicit. The patch is separeted from the first to make it simpler to deal with any potential conflicts in the Makefile Signed-off-by: Riku Voipio <riku.voipio@linaro.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1429192375-13706-3-git-send-email-riku.voipio@linaro.org [ Fixed it up wrt Build files ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
#include "thread_map.h"
|
|
#include "evsel.h"
|
|
#include "debug.h"
|
|
#include "tests.h"
|
|
|
|
int test__openat_syscall_event(void)
|
|
{
|
|
int err = -1, fd;
|
|
struct perf_evsel *evsel;
|
|
unsigned int nr_openat_calls = 111, i;
|
|
struct thread_map *threads = thread_map__new(-1, getpid(), UINT_MAX);
|
|
char sbuf[STRERR_BUFSIZE];
|
|
|
|
if (threads == NULL) {
|
|
pr_debug("thread_map__new\n");
|
|
return -1;
|
|
}
|
|
|
|
evsel = perf_evsel__newtp("syscalls", "sys_enter_openat");
|
|
if (evsel == NULL) {
|
|
if (tracefs_configured())
|
|
pr_debug("is tracefs mounted on /sys/kernel/tracing?\n");
|
|
else if (debugfs_configured())
|
|
pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
|
|
else
|
|
pr_debug("Neither tracefs or debugfs is enabled in this kernel\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_r(errno, sbuf, sizeof(sbuf)));
|
|
goto out_evsel_delete;
|
|
}
|
|
|
|
for (i = 0; i < nr_openat_calls; ++i) {
|
|
fd = openat(0, "/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_openat_calls) {
|
|
pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n",
|
|
nr_openat_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;
|
|
}
|