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authorSebastian Andrzej Siewior <[email protected]>2021-09-03 10:40:01 +0200
committerPeter Zijlstra <[email protected]>2021-09-17 15:08:44 +0200
commit2507003a1d10917c9158077bf6030719d02c941e (patch)
tree0e67fa9faffc4191d9d328dc41a161ccaf0d1221 /tools/perf/scripts/python/net_dropmonitor.py
parent12235da8c80a1f9909008e4ca6036d5772b81192 (diff)
lockdep: Let lock_is_held_type() detect recursive read as read
lock_is_held_type(, 1) detects acquired read locks. It only recognized locks acquired with lock_acquire_shared(). Read locks acquired with lock_acquire_shared_recursive() are not recognized because a `2' is stored as the read value. Rework the check to additionally recognise lock's read value one and two as a read held lock. Fixes: e918188611f07 ("locking: More accurate annotations for read_lock()") Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Acked-by: Boqun Feng <[email protected]> Acked-by: Waiman Long <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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