Subject: Re: [PATCH 2/5] bitops: compile time optimization for
 hweight_long(CONSTANT)
From: Peter Zijlstra <peterz@infradead.org>
To: Borislav Petkov <bp@amd64.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
       Andrew Morton <akpm@linux-foundation.org>,
       Wu Fengguang <fengguang.wu@intel.com>,
       LKML <linux-kernel@vger.kernel.org>, Jamie Lokier <jamie@shareable.org>,
       Roland Dreier <rdreier@cisco.com>, Al Viro <viro@ZenIV.linux.org.uk>,
       "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
       Ingo Molnar <mingo@elte.hu>, Brian Gerst <brgerst@gmail.com>
In-Reply-To: <20100205121139.GA9044@aftab>
References: <20100203070825.e36b3932.akpm@linux-foundation.org>
	 <1265210157.24455.646.camel@laptop>
	 <20100203074251.e2caa3f3.akpm@linux-foundation.org>
	 <20100203181425.GB1367@aftab> <1265222875.24455.1020.camel@laptop>
	 <4B69D362.10608@zytor.com> <20100204151050.GC32711@aftab>
	 <1265296432.22001.18.camel@laptop> <20100204155419.GD32711@aftab>
	 <1265299457.22001.72.camel@laptop>  <20100205121139.GA9044@aftab>
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Date: Fri, 05 Feb 2010 13:14:59 +0100
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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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