Commit 2fc0fb03 authored by Sandipan Das's avatar Sandipan Das Committed by Greg Kroah-Hartman

perf tests: Fix indexing when invoking subtests

[ Upstream commit aa90f9f9554616d5738f7bedb4a8f0e5e14d1bc6 ]

Recently, the subtest numbering was changed to start from 1.  While it
is fine for displaying results, this should not be the case when the
subtests are actually invoked.

Typically, the subtests are stored in zero-indexed arrays and invoked
based on the index passed to the main test function.  Since the index
now starts from 1, the second subtest in the array (index 1) gets
invoked instead of the first (index 0).  This applies to all of the
following subtests but for the last one, the subtest always fails
because it does not meet the boundary condition of the subtest index
being lesser than the number of subtests.

This can be observed on powerpc64 and x86_64 systems running Fedora 28
as shown below.

Before:

  # perf test "builtin clang support"
  55: builtin clang support                                 :
  55.1: builtin clang compile C source to IR                : Ok
  55.2: builtin clang compile C source to ELF object        : FAILED!

  # perf test "LLVM search and compile"
  38: LLVM search and compile                               :
  38.1: Basic BPF llvm compile                              : Ok
  38.2: kbuild searching                                    : Ok
  38.3: Compile source for BPF prologue generation          : Ok
  38.4: Compile source for BPF relocation                   : FAILED!

  # perf test "BPF filter"
  40: BPF filter                                            :
  40.1: Basic BPF filtering                                 : Ok
  40.2: BPF pinning                                         : Ok
  40.3: BPF prologue generation                             : Ok
  40.4: BPF relocation checker                              : FAILED!

After:

  # perf test "builtin clang support"
  55: builtin clang support                                 :
  55.1: builtin clang compile C source to IR                : Ok
  55.2: builtin clang compile C source to ELF object        : Ok

  # perf test "LLVM search and compile"
  38: LLVM search and compile                               :
  38.1: Basic BPF llvm compile                              : Ok
  38.2: kbuild searching                                    : Ok
  38.3: Compile source for BPF prologue generation          : Ok
  38.4: Compile source for BPF relocation                   : Ok

  # perf test "BPF filter"
  40: BPF filter                                            :
  40.1: Basic BPF filtering                                 : Ok
  40.2: BPF pinning                                         : Ok
  40.3: BPF prologue generation                             : Ok
  40.4: BPF relocation checker                              : Ok
Signed-off-by: default avatarSandipan Das <sandipan@linux.ibm.com>
Reported-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Fixes: 9ef0112442bd ("perf test: Fix subtest number when showing results")
Link: http://lkml.kernel.org/r/20180726171733.33208-1-sandipan@linux.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 52f30553
......@@ -335,7 +335,7 @@ static int test_and_print(struct test *t, bool force_skip, int subtest)
if (!t->subtest.get_nr)
pr_debug("%s:", t->desc);
else
pr_debug("%s subtest %d:", t->desc, subtest);
pr_debug("%s subtest %d:", t->desc, subtest + 1);
switch (err) {
case TEST_OK:
......@@ -413,7 +413,7 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
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 + 1);
err = test_and_print(t, skip, subi);
if (err != TEST_OK && t->subtest.skip_if_fail)
skip = true;
}
......
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