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[PATCH 0/2] locking/spinlock_debug: Change it to a mostly fair lock

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The current debug spinlock implementation is a TATAS unfair lock. This
can occasionally lead to system lockup with a debug kernel because
of the unfairness of the lock rather than inherent locking problem.

This patch set changes the debug spinlock implementation to a
mostly fair spinlock based on the MCS lock similar to what is done
in qspinlock.

Waiman Long (2):
  locking/spinlock_debug: Reduce lockup suspected message clutter
  locking/spinlock_debug: Reduce lock cacheline contention

 include/linux/spinlock_types.h  |  8 +++--
 kernel/locking/spinlock_debug.c | 73 ++++++++++++++++++++++++++++++-----------
 2 files changed, 58 insertions(+), 23 deletions(-)

-- 
1.8.3.1

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[PATCH 0/2] locking/spinlock_debug: Change it to a mostly fair lock Waiman Long <longman@redhat.com> - 2017-02-01 19:30 +0100
  [PATCH 1/2] locking/spinlock_debug: Reduce lockup suspected message clutter Waiman Long <longman@redhat.com> - 2017-02-01 19:30 +0100

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