From 961d9caceea2d5350a15c17b7d3ffc24c08c9b09 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Sat, 18 Jan 2014 19:52:13 -0500 Subject: ktest: Add BISECT_TRIES to bisect test For those cases that it takes several tries to hit a bug, it would be useful for ktest.pl to try a test multiple times before it considers the test as a pass. To accomplish this, BISECT_TRIES ktest config option has been added. It is default to one, as most of the time a bisect only needs to try a test once. But the user can now up this to make ktest run a given test multiple times. The first failure that is detected will set a bisect bad. It only repeats on success. Note, as with all race bugs, there's no guarantee that if it succeeds, it is really a good bisect. But it helps in case the bug is somewhat reliable. You can set BISECT_TRIES to zero, and all tests will be considered good, unless you also set BISECT_MANUAL. Suggested-by: "Paul E. McKenney" Signed-off-by: Steven Rostedt --- tools/testing/ktest/sample.conf | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'tools/testing/ktest/sample.conf') diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf index 2eb4bd2f6ab4..172eec4517fb 100644 --- a/tools/testing/ktest/sample.conf +++ b/tools/testing/ktest/sample.conf @@ -1028,6 +1028,20 @@ # BISECT_BAD with BISECT_CHECK = good or # BISECT_CHECK = bad, respectively. # +# BISECT_TRIES = 5 (optional, default 1) +# +# For those cases that it takes several tries to hit a bug, +# the BISECT_TRIES is useful. It is the number of times the +# test is ran before it says the kernel is good. The first failure +# will stop trying and mark the current SHA1 as bad. +# +# Note, as with all race bugs, there's no guarantee that if +# it succeeds, it is really a good bisect. But it helps in case +# the bug is some what reliable. +# +# You can set BISECT_TRIES to zero, and all tests will be considered +# good, unless you also set BISECT_MANUAL. +# # BISECT_RET_GOOD = 0 (optional, default undefined) # # In case the specificed test returns something other than just -- cgit v1.2.3