linux-kernel - Re: [PATCH v4 0/5] sparc64: Optimize fls and _

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Date:   Wed, 15 Nov 2017 14:27:02 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     vijay.ac.kumar@...cle.com
Cc:     linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
        babu.moger@...cle.com, rob.gardner@...cle.com, sam@...nborg.org,
        anthony.yznaga@...cle.com
Subject: Re: [PATCH v4 0/5] sparc64: Optimize fls and __fls

From: Vijay Kumar <vijay.ac.kumar@...cle.com>
Date: Wed, 11 Oct 2017 12:50:01 -0600

> SPARC provides lzcnt instruction (with VIS3) which can be used to
> optimize fls, __fls and fls64 functions. For the systems that supports
> lzcnt instruction, we now do boot time patching to use sparc
> optimized fls, __fls and fls64 functions.
> 
> v3->v4:
>  -  Fixed a typo.
> v2->v3:
>  -  Using ENTRY(), ENDPROC() for assembler functions.
>  -  Removed BITS_PER_LONG from __fls.
>  -  Using generic fls64().
>  -  Replaced lzcnt instruction with .word directive.
> v1->v2:
>  - Fixed delay slot issue.

Series applied, thank you.