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Commit a4c410f0 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Linus Torvalds
Browse files

[PATCH] lockdep: print current locks on in_atomic warnings 



Add debug_show_held_locks(current) to __might_sleep() and schedule(); this
makes finding the offending lock leak easier.

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 8bb02691

kernel/sched.c

+2 −0
Original line number Diff line number Diff line
@@ -3333,6 +3333,7 @@ asmlinkage void __sched schedule(void) 
		printk(KERN_ERR "BUG: scheduling while atomic: "

			"%s/0x%08x/%d\n",

			current->comm, preempt_count(), current->pid);

		debug_show_held_locks(current);

		dump_stack();

	}

	profile_hit(SCHED_PROFILING, __builtin_return_address(0));
@@ -6872,6 +6873,7 @@ void __might_sleep(char *file, int line) 
				" context at %s:%d\n", file, line);

		printk("in_atomic():%d, irqs_disabled():%d\n",

			in_atomic(), irqs_disabled());

		debug_show_held_locks(current);

		dump_stack();

	}

#endif