perf tests attr: Add test_attr__ready function
We create many test events before the real ones just to test specific
features. But there's no way for attr tests to separate those test
events from those it needs to check.
Adding 'ready' call from the events open interface to trigger/start
events collection for attr test.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Richter <tmricht@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20170703145030.12903-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index df567e4..6dd069a 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -58,6 +58,8 @@ static int perf_evsel__no_extra_init(struct perf_evsel *evsel __maybe_unused)
return 0;
}
+void __weak test_attr__ready(void) { }
+
static void perf_evsel__no_extra_fini(struct perf_evsel *evsel __maybe_unused)
{
}
@@ -1572,6 +1574,8 @@ int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
pr_debug2("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx",
pid, cpus->map[cpu], group_fd, flags);
+ test_attr__ready();
+
fd = sys_perf_event_open(&evsel->attr, pid, cpus->map[cpu],
group_fd, flags);