diff options
| author |   Peter Zijlstra <peterz@infradead.org> | 2020-12-09 16:42:57 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-01-14 11:20:16 +0100 |
| commit | 5831c0f71d6664c6aa7b58ba969bf645c89ecb85 (patch) | |
| tree | a25426268897de4408268efcf09a20942a4d17a3 | |
| parent | lockdep/selftest: Add wait context selftests (diff) | |
| download | linux-dev-5831c0f71d6664c6aa7b58ba969bf645c89ecb85.tar.xz linux-dev-5831c0f71d6664c6aa7b58ba969bf645c89ecb85.zip | |
locking/selftests: More granular debug_locks_verbose
Showing all tests all the time is tiresome.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 11 | ||||
| -rw-r--r-- | lib/locking-selftest.c | 5 |
2 files changed, 9 insertions, 7 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index c722ec19cd00..611a5c3034e7 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -802,13 +802,14 @@ insecure, please do not use on production kernels. debug_locks_verbose= - [KNL] verbose self-tests - Format=<0|1> + [KNL] verbose locking self-tests + Format: <int> Print debugging info while doing the locking API self-tests. - We default to 0 (no extra messages), setting it to - 1 will print _a lot_ more information - normally - only useful to kernel developers. + Bitmask for the various LOCKTYPE_ tests. Defaults to 0 + (no extra messages), setting it to -1 (all bits set) + will print _a_lot_ more information - normally only + useful to lockdep developers. debug_objects [KNL] Enable object debugging diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c index 23376eeccf7c..3306f43b0007 100644 --- a/lib/locking-selftest.c +++ b/lib/locking-selftest.c @@ -1390,6 +1390,8 @@ static void dotest(void (*testcase_fn)(void), int expected, int lockclass_mask) WARN_ON(irqs_disabled()); + debug_locks_silent = !(debug_locks_verbose & lockclass_mask); + testcase_fn(); /* * Filter out expected failures: @@ -1410,7 +1412,7 @@ static void dotest(void (*testcase_fn)(void), int expected, int lockclass_mask) } testcase_total++; - if (debug_locks_verbose) + if (debug_locks_verbose & lockclass_mask) pr_cont(" lockclass mask: %x, debug_locks: %d, expected: %d\n", lockclass_mask, debug_locks, expected); /* @@ -2674,7 +2676,6 @@ void locking_selftest(void) printk(" --------------------------------------------------------------------------\n"); init_shared_classes(); - debug_locks_silent = !debug_locks_verbose; lockdep_set_selftest_task(current); DO_TESTCASE_6R("A-A deadlock", AA); |