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Date: Fri, 19 Aug 2016 14:24:23 -0700
From: Josh Triplett <josh@joshtriplett.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
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Subject: Re: [RFC PATCH v8 1/9] Restartable sequences system call
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On Fri, Aug 19, 2016 at 01:56:11PM -0700, Andi Kleen wrote:
> > Nobody gets a cpu number just to get a cpu number - it's not a useful
> > thing to benchmark. What does getcpu() so much that we care?
> 
> malloc is the primary target I believe. Saves lots of memory to keep
> caches per CPU rather than per thread.

Also improves locality; that does seem like a good idea.  Has anyone
written and tested the corresponding changes to a malloc implementation?

- Josh Triplett