Re: [PATCH 1/2] arm64:vdso: Rewrite gettimeofday into C.

From	Catalin Marinas <catalin.marinas@arm.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/2] arm64:vdso: Rewrite gettimeofday into C.
Date	2017-04-24 17:30 +0200
Message-ID	<tzO67-eo-45@gated-at.bofh.it> (permalink)
References	<tzAmt-7Jg-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Sun, Apr 23, 2017 at 04:47:00PM -0700, Andrew Pinski wrote:
> This allows the compiler to optimize the divide by 1000.
> And remove the other divide.
> 
> On ThunderX, gettimeofday improves by 32%.  On ThunderX 2,
> gettimeofday improves by 18%.

Is this with or without the second patch (removing the ISB)?

-- 
Catalin

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[PATCH 1/2] arm64:vdso: Rewrite gettimeofday into C. Andrew Pinski <apinski@cavium.com> - 2017-04-24 02:50 +0200
  Re: [PATCH 1/2] arm64:vdso: Rewrite gettimeofday into C. Catalin Marinas <catalin.marinas@arm.com> - 2017-04-24 17:30 +0200

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