Potential lock starvation scenario as explained in patch 2. Time due to rwsem reader optimistic spinning led me to reexamine theĬode to see the pro and cons of doing it. Patch 5: fix !CONFIG_RWSEM_SPIN_ON_OWNER compilation errors.Ī recent report of SAP certification failure caused by increased system Patch 4: correctly handle HANDOFF clearing. Patch 3: rename osq_is_empty() to rwsem_no_spinners() as suggested. Update some commit logs to incorporate review comments. To: Peter Zijlstra, Ingo Molnar, Will DeaconĬc: linux-kernel, Davidlohr Bueso, Phil Auld, Waiman Long ![]() ` (5 more replies) 0 siblings, 6 replies 21+ messages in thread 4:14 ` locking/rwsem: Pass the current atomic count to rwsem_down_read_slowpath() Waiman Long ![]() Locking/rwsem: Rework reader optimistic spinning LKML Archive on help / color / mirror / Atom feed * locking/rwsem: Rework reader optimistic spinning 4:14 Waiman Long
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