Messages in this thread |  | | Date | Wed, 03 Oct 2018 15:02:57 +0200 | From | Peter Zijlstra <> | Subject | [PATCH v2 0/4] locking/qspinlock, x86: Improve determinism for x86 |
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Back when Will did his qspinlock determinism patches, we were left with one cmpxchg loop on x86 due to the use of atomic_fetch_or(). Will proposed a nifty trick:
http://lkml.kernel.org/r/20180409145409.GA9661@arm.com
While that didn't quite work, this series implements that basic idea.
Changes since v1:
- Adjusted comments in #2, wildea01 - 'Simplified' GEN_*_RMWcc, peterz - Rewrote _the_ patch to use BTS, wildea01
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