From: David Miller <davem@davemloft.net>
To: vijay.ac.kumar@oracle.com
Cc: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org,
babu.moger@oracle.com, rob.gardner@oracle.com, sam@ravnborg.org,
anthony.yznaga@oracle.com
Subject: Re: [PATCH v4 0/5] sparc64: Optimize fls and __fls
Date: Wed, 15 Nov 2017 14:27:02 +0900 (KST) [thread overview]
Message-ID: <20171115.142702.1110571070818989446.davem@davemloft.net> (raw)
In-Reply-To: <1507747806-10251-1-git-send-email-vijay.ac.kumar@oracle.com>
From: Vijay Kumar <vijay.ac.kumar@oracle.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.
prev parent reply other threads:[~2017-11-15 5:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-11 18:50 Vijay Kumar
2017-10-11 18:50 ` [PATCH v4 1/5] sparc64: Define SPARC default fls function Vijay Kumar
2017-10-11 18:50 ` [PATCH v4 2/5] sparc64: Define SPARC default __fls function Vijay Kumar
2017-10-11 18:50 ` [PATCH v4 3/5] sparc64: SPARC optimized fls function Vijay Kumar
2017-10-11 18:50 ` [PATCH v4 4/5] sparc64: SPARC optimized __fls function Vijay Kumar
2017-10-11 18:50 ` [PATCH v4 5/5] sparc64: Use sparc optimized fls and __fls for T4 and above Vijay Kumar
2017-10-12 20:29 ` [PATCH v4 0/5] sparc64: Optimize fls and __fls Babu Moger
2017-11-15 5:27 ` David Miller [this message]
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