perf tests: Move test__open_syscall_event into separate object
Separating test__open_syscall_event test from the builtin-test into
open-syscall object.
Adding util object under tests directory to gather help functions common
to more tests.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1352508412-16914-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/tests/open-syscall.c b/tools/perf/tests/open-syscall.c
new file mode 100644
index 0000000..98be8b5
--- /dev/null
+++ b/tools/perf/tests/open-syscall.c
@@ -0,0 +1,66 @@
+#include "thread_map.h"
+#include "evsel.h"
+#include "debug.h"
+#include "tests.h"
+
+int test__open_syscall_event(void)
+{
+ int err = -1, fd;
+ struct thread_map *threads;
+ struct perf_evsel *evsel;
+ struct perf_event_attr attr;
+ unsigned int nr_open_calls = 111, i;
+ int id = trace_event__id("sys_enter_open");
+
+ if (id < 0) {
+ pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
+ return -1;
+ }
+
+ threads = thread_map__new(-1, getpid(), UINT_MAX);
+ if (threads == NULL) {
+ pr_debug("thread_map__new\n");
+ return -1;
+ }
+
+ memset(&attr, 0, sizeof(attr));
+ attr.type = PERF_TYPE_TRACEPOINT;
+ attr.config = id;
+ evsel = perf_evsel__new(&attr, 0);
+ if (evsel == NULL) {
+ pr_debug("perf_evsel__new\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;
+}