linux-kernel - Re: [PATCH] __div64_32: implement division by multiplication for 32-bit arches

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Message-ID: <alpine.LFD.2.20.1510301113530.630@knanqh.ubzr>
Date:	Fri, 30 Oct 2015 11:17:17 -0400 (EDT)
From:	Nicolas Pitre <nicolas.pitre@...aro.org>
To:	Måns Rullgård <mans@...sr.com>
cc:	Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
	linux-kernel@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>,
	Ingo Molnar <mingo@...e.hu>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: Re: [PATCH] __div64_32: implement division by multiplication for
 32-bit arches

On Fri, 30 Oct 2015, Måns Rullgård wrote:

> Nicolas Pitre <nicolas.pitre@...aro.org> writes:
> 
> > OK... I was intrigued, so I adapted my ARM code to the generic case, 
> > including the overflow avoidance optimizations.  Please have look and 
> > tell me how this works for you.
> >
> > If this patch is accepted upstream, then it could be possible to 
> > abstract only the actual multiplication part with some architecture 
> > specific assembly.
> 
> Good idea.

Could you please provide a reviewed-by or acked-by tag?


Nicolas