Re: [PATCH 0/4] rwsem: Implement writer lock-stealing

From: Alex Shi
Date: Wed Feb 20 2013 - 03:50:16 EST

> Alex, could you go through my patch and see if there is anything you
> find objectionable ? (if not about the details, at least about the
> general approach of enabling writer lock stealing on the fast path)

I did a quick review on the patchset and tested the patches 1~3, and 1~3
plus 4th, my patch plus 4th.

The patch looks much complicated, and also goes writing slow path to
steal locking. My patch looks quite straight and simple.

This 1~3 patch has very very similar performance effect with mine.

The highlight patch is the 4th, seems it can provide about ~2% aim7
performance gain(base on both of mine or patches 1~3) on my 4S NHM EX

Thanks Alex
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