linux-wandboard

kmemleak: Allow rescheduling during an object scanning

If the object size is bigger than a predefined value (4K in this case),
release the object lock during scanning and call cond_resched().
Re-acquire the lock after rescheduling and test whether the object is
still valid.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>