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>

1 files changed, 4 insertions, 4 deletions

diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index 49b1959dda41..a767a6400c5c 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -613,16 +613,16 @@ int test__code_reading(void)
         case TEST_CODE_READING_OK:
                 return 0;
         case TEST_CODE_READING_NO_VMLINUX:
-                fprintf(stderr, " (no vmlinux)");
+                pr_debug("no vmlinux\n");
                 return 0;
         case TEST_CODE_READING_NO_KCORE:
-                fprintf(stderr, " (no kcore)");
+                pr_debug("no kcore\n");
                 return 0;
         case TEST_CODE_READING_NO_ACCESS:
-                fprintf(stderr, " (no access)");
+                pr_debug("no access\n");
                 return 0;
         case TEST_CODE_READING_NO_KERNEL_OBJ:
-                fprintf(stderr, " (no kernel obj)");
+                pr_debug("no kernel obj\n");
                 return 0;
         default:
                 return -1;