Commit 5831c0f7 authored by Peter Zijlstra's avatar Peter Zijlstra
Browse files

locking/selftests: More granular debug_locks_verbose 



Showing all tests all the time is tiresome.

Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
parent 9271a40d

Documentation/admin-guide/kernel-parameters.txt

+6 −5
Original line number Diff line number Diff line
@@ -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

lib/locking-selftest.c

+3 −2
Original line number Diff line number Diff line
@@ -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);