[PATCH 4.9 019/111] perf test: Fix subtest number when showing results

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Richter <tmri...@linux.ibm.com>

[ Upstream commit 9ef0112442bdddef5fb55adf20b3a5464b33de75 ]

Perf test 40 for example has several subtests numbered 1-4 when
displaying the start of the subtest. When the subtest results
are displayed the subtests are numbered 0-3.

Use this command to generate trace output:

  [root@s35lp76 perf]# ./perf test -Fv 40 2>/tmp/bpf1

Fix this by adjusting the subtest number when show the
subtest result.

Output before:

  [root@s35lp76 perf]# egrep '(^40\.[0-4]| subtest [0-4]:)' /tmp/bpf1
  40.1: Basic BPF filtering                                 :
  BPF filter subtest 0: Ok
  40.2: BPF pinning                                         :
  BPF filter subtest 1: Ok
  40.3: BPF prologue generation                             :
  BPF filter subtest 2: Ok
  40.4: BPF relocation checker                              :
  BPF filter subtest 3: Ok
  [root@s35lp76 perf]#

Output after:

  root@s35lp76 ~]# egrep '(^40\.[0-4]| subtest [0-4]:)' /tmp/bpf1
  40.1: Basic BPF filtering                                 :
  BPF filter subtest 1: Ok
  40.2: BPF pinning                                         :
  BPF filter subtest 2: Ok
  40.3: BPF prologue generation                             :
  BPF filter subtest 3: Ok
  40.4: BPF relocation checker                              :
  BPF filter subtest 4: Ok
  [root@s35lp76 ~]#

Signed-off-by: Thomas Richter <tmri...@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueck...@linux.ibm.com>
Cc: Heiko Carstens <heiko.carst...@de.ibm.com>
Cc: Martin Schwidefsky <schwidef...@de.ibm.com>
Link: http://lkml.kernel.org/r/20180724134858.100644-1-tmri...@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 tools/perf/tests/builtin-test.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -413,7 +413,7 @@ static int __cmd_test(int argc, const ch
                        for (subi = 0; subi < subn; subi++) {
                                pr_info("%2d.%1d: %-*s:", i, subi + 1, subw,
                                        t->subtest.get_desc(subi));
-                               err = test_and_print(t, skip, subi);
+                               err = test_and_print(t, skip, subi + 1);
                                if (err != TEST_OK && t->subtest.skip_if_fail)
                                        skip = true;
                        }