tree 24481f2fe7206ef69800a33df6ac3e1716085326
parent 7531e2f34d1d551b096143f19111139f0dd84c8b
author Peter Zijlstra <a.p.zijlstra@chello.nl> 1218439824 +0200
committer Ingo Molnar <mingo@elte.hu> 1218439824 +0200

lockdep: spin_lock_nest_lock()

Expose the new lock protection lock.

This can be used to annotate places where we take multiple locks of the
same class and avoid deadlocks by always taking another (top-level) lock
first.

NOTE: we're still bound to the MAX_LOCK_DEPTH (48) limit.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>