Re: [PATCH v5 00/18] locking/rwsem: Rwsem rearchitecture part 2

Waiman Long
2019-04-18T23:56:07Z

On 04/18/2019 07:46 PM, Waiman Long wrote:
> v5:
> - Drop v4 patch 1 as it is merged into tip's locking/core branch.
> - Integrate the 2 followup patches into the series. The first
> follow-up patch is broken into 2 pieces. The first piece comes in
> before the "Enable readers spinning on writer" and the 2nd piece
> is merged into the "Enable time-based spinning on reader-owned
> rwsem" patch. The 2nd followup patch is added after that.
> - Add a new patch to make all wake_up_q() calls after dropping
> wait_lock as suggested by PeterZ.
> - Incorporate numerouos suggestions by PeterZ and Davidlohr.

This patchset is still being reviewed by Peter . The purpose of this
series is mainly to sync up the version that Peter has and the ones that
I am working on incorporating his feedback. Further changes may still be
needed.

I run an overall performance test on this new patchset and present the
data in this cover letter. However, I haven't run performance tests for
individual patches. So the performance data listed in some of the
patches may be stale.

Cheers,
Longman