perf test: Keep test result clean if '-v' not set
According to [1], 'perf test' should avoid output too much information
if '-v' is not set, only 'Ok', 'FAIL' or 'Skip' need to be printed.
This patch removes several messages sent directly to stderr to make
the output clean.
Before this patch:
# perf test dummy
23: Test using a dummy software event to keep tracking : (not supported) Ok
After this patch:
# perf test dummy
23: Test using a dummy software event to keep tracking : Skip
[1] http://lkml.kernel.org/r/20151020134155.GE4400@redhat.com
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1446547486-229499-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c
index 4d4b983..a2e2269 100644
--- a/tools/perf/tests/keep-tracking.c
+++ b/tools/perf/tests/keep-tracking.c
@@ -90,8 +90,8 @@
evsel->attr.enable_on_exec = 0;
if (perf_evlist__open(evlist) < 0) {
- fprintf(stderr, " (not supported)");
- err = 0;
+ pr_debug("Unable to open dummy and cycles event\n");
+ err = TEST_SKIP;
goto out_err;
}