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Subject[PATCH 5/9] ktest: Add BISECT_SKIP
From: Steven Rostedt <srostedt@redhat.com>

If a during a git bisect, ktest fails on something other than
what it is testing (if BISECT_TYPE is test but it fails on build),
if BISECT_SKIP is set, then it will do a "git bisect skip" instead
of just failing the bisect and letting the user find a good commit
to test.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
tools/testing/ktest/ktest.pl | 36 ++++++++++++++++++++++++++++--------
tools/testing/ktest/sample.conf | 9 +++++++++
2 files changed, 37 insertions(+), 8 deletions(-)

diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index e55bd52..0f62916 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -38,6 +38,7 @@ $default{"BUILD_OPTIONS"} = "";
$default{"BISECT_SLEEP_TIME"} = 60; # sleep time between bisects
$default{"CLEAR_LOG"} = 0;
$default{"BISECT_MANUAL"} = 0;
+$default{"BISECT_SKIP"} = 1;
$default{"SUCCESS_LINE"} = "login:";
$default{"BOOTED_TIMEOUT"} = 1;
$default{"DIE_ON_FAILURE"} = 1;
@@ -83,6 +84,7 @@ my $in_bisect = 0;
my $bisect_bad = "";
my $reverse_bisect;
my $bisect_manual;
+my $bisect_skip;
my $in_patchcheck = 0;
my $run_test;
my $redirect;
@@ -1169,7 +1171,15 @@ sub run_git_bisect {
return 1;
}

-# returns 1 on success, 0 on failure
+sub bisect_reboot {
+ doprint "Reboot and sleep $bisect_sleep_time seconds\n";
+ reboot;
+ start_monitor;
+ wait_for_monitor $bisect_sleep_time;
+ end_monitor;
+}
+
+# returns 1 on success, 0 on failure, -1 on skip
sub run_bisect_test {
my ($type, $buildtype) = @_;

@@ -1183,6 +1193,10 @@ sub run_bisect_test {
build $buildtype or $failed = 1;

if ($type ne "build") {
+ if ($failed && $bisect_skip) {
+ $in_bisect = 0;
+ return -1;
+ }
dodie "Failed on build" if $failed;

# Now boot the box
@@ -1194,6 +1208,12 @@ sub run_bisect_test {
monitor or $failed = 1;

if ($type ne "boot") {
+ if ($failed && $bisect_skip) {
+ end_monitor;
+ bisect_reboot;
+ $in_bisect = 0;
+ return -1;
+ }
dodie "Failed on boot" if $failed;

do_run_test or $failed = 1;
@@ -1206,11 +1226,7 @@ sub run_bisect_test {

# reboot the box to a good kernel
if ($type ne "build") {
- doprint "Reboot and sleep $bisect_sleep_time seconds\n";
- reboot;
- start_monitor;
- wait_for_monitor $bisect_sleep_time;
- end_monitor;
+ bisect_reboot;
}
} else {
$result = 1;
@@ -1240,10 +1256,13 @@ sub run_bisect {
$ret = !$ret;
}

- if ($ret) {
+ if ($ret > 0) {
return "good";
- } else {
+ } elsif ($ret == 0) {
return "bad";
+ } elsif ($bisect_skip) {
+ doprint "HIT A BAD COMMIT ... SKIPPING\n";
+ return "skip";
}
}

@@ -1954,6 +1973,7 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
$sleep_time = set_test_option("SLEEP_TIME", $i);
$bisect_sleep_time = set_test_option("BISECT_SLEEP_TIME", $i);
$bisect_manual = set_test_option("BISECT_MANUAL", $i);
+ $bisect_skip = set_test_option("BISECT_SKIP", $i);
$store_failures = set_test_option("STORE_FAILURES", $i);
$timeout = set_test_option("TIMEOUT", $i);
$booted_timeout = set_test_option("BOOTED_TIMEOUT", $i);
diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf
index af82ac2..4c46b7e 100644
--- a/tools/testing/ktest/sample.conf
+++ b/tools/testing/ktest/sample.conf
@@ -519,6 +519,15 @@
# git bisect good, git bisect bad, and running the git bisect replay
# if the BISECT_REPLAY is set.
#
+# BISECT_SKIP = 1 (optional, default 0)
+#
+# If BISECT_TYPE is set to test but the build fails, ktest will
+# simply fail the test and end their. You could use BISECT_REPLAY
+# and BISECT_START to resume after you found a new starting point,
+# or you could set BISECT_SKIP to 1. If BISECT_SKIP is set to 1,
+# when something other than the BISECT_TYPE fails, ktest.pl will
+# run "git bisect skip" and try again.
+#
# BISECT_REVERSE = 1 (optional, default 0)
#
# In those strange instances where it was broken forever
--
1.7.2.3



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