linux-kernel - Re: [PATCH 2/5] bitops: compile time optimization for hweight

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Message-ID: <1265372099.22001.512.camel@laptop>
Date:	Fri, 05 Feb 2010 13:14:59 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Borislav Petkov <bp@...64.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jamie Lokier <jamie@...reable.org>,
	Roland Dreier <rdreier@...co.com>,
	Al Viro <viro@...IV.linux.org.uk>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>, Brian Gerst <brgerst@...il.com>
Subject: Re: [PATCH 2/5] bitops: compile time optimization for
 hweight_long(CONSTANT)

On Fri, 2010-02-05 at 13:11 +0100, Borislav Petkov wrote:
> On Thu, Feb 04, 2010 at 05:04:17PM +0100, Peter Zijlstra wrote:
> > No, just don't touch hweight_long(), simply provide
> > __arch_hweight{8,16,32,64} and all will be well.
> 
> Ok, another day, another version :)
> 
> It is, of course, completely untested but it builds and the asm looks
> ok. I think I've addressed all concerns so far.

please work against a tree that has:

  http://lkml.org/lkml/2010/2/4/119

in.

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