Re: [RFC] Cancellable MCS spinlock rework

From: Peter Zijlstra
Date: Thu Jul 03 2014 - 03:31:35 EST


On Wed, Jul 02, 2014 at 10:30:03AM -0700, Jason Low wrote:
> Would potentially reducing the size of the rw semaphore structure by 32
> bits (for all architectures using optimistic spinning) be a nice
> benefit?

Possibly, although I had a look at the mutex structure and we didn't
have a hole to place it in, unlike what you found with the rwsem.

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