ktest: Add INGORE_ERRORS to ignore warnings in boot up

When testing a kernel that has warnings, ktest.pl will fail the test
when it sees the warning. If you need to test the the kernel and want
to ignore the errors that are produced, the option IGNORE_ERRORS has
been added. When IGNORE_ERRORS is set to something other than 0, it will
ignore call traces due to WARN_ON().

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2 files changed, 11 insertions, 1 deletions

diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index f81c8b3a39a8..62a134dc421a 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -104,6 +104,7 @@ my $start_minconfig;
 my $start_minconfig_defined;
 my $output_minconfig;
 my $ignore_config;
+my $ignore_errors;
 my $addconfig;
 my $in_bisect = 0;
 my $bisect_bad_commit = "";
@@ -218,6 +219,7 @@ my %option_map = (
     "BISECT_SLEEP_TIME"         => \$bisect_sleep_time,
     "PATCHCHECK_SLEEP_TIME"     => \$patchcheck_sleep_time,
     "IGNORE_WARNINGS"           => \$ignore_warnings,
+    "IGNORE_ERRORS"             => \$ignore_errors,
     "BISECT_MANUAL"             => \$bisect_manual,
     "BISECT_SKIP"               => \$bisect_skip,
     "CONFIG_BISECT_GOOD"        => \$config_bisect_good,
@@ -1529,7 +1531,7 @@ sub monitor {
         }
 
         if ($full_line =~ /call trace:/i) {
-            if (!$bug && !$skip_call_trace) {
+            if (!$ignore_errors && !$bug && !$skip_call_trace) {
                 $bug = 1;
                 $failure_start = time;
             }
diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf
index d7148f7c7c04..e7119024b879 100644
--- a/tools/testing/ktest/sample.conf
+++ b/tools/testing/ktest/sample.conf
@@ -741,6 +741,14 @@
 # (default 0)
 #IGNORE_UNUSED = 1
 
+# When testing a kernel that happens to have WARNINGs, and call
+# traces, ktest.pl will detect these and fail a boot or test run
+# due to warnings. By setting this option, ktest will ignore
+# call traces, and will not fail a test if the kernel produces
+# an oops. Use this option with care.
+# (default 0)
+#IGNORE_ERRORS = 1
+
 #### Per test run options ####
 # The following options are only allowed in TEST_START sections.
 # They are ignored in the DEFAULTS sections.