Re: [RFC PATCH 1/2] rseq: extend struct rseq with numa node id
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From: Peter Zijlstra <peterz@infradead.org>
Date: 2022-02-01 11:09:02
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On Mon, Jan 31, 2022 at 10:19:09PM +0100, Florian Weimer wrote:
It can be used to implement getcpu purely in userspace, too. I had plan to hack this together with a node ID cache in TLS, which should offer pretty much the same functionality (except for weird CPU topology changes which alter the node ID of a previously used CPU).
PowerPC does that quite a lot..