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Date: Fri, 19 Aug 2016 13:56:11 -0700
From: Andi Kleen <andi@firstfloor.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
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Subject: Re: [RFC PATCH v8 1/9] Restartable sequences system call
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> 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.

-Andi