From owner-freebsd-hackers@FreeBSD.ORG  Thu Jun 11 14:43:55 2015
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Date: Thu, 11 Jun 2015 22:43:47 +0800
From: Erich Dollansky <erichsfreebsdlist@alogt.com>
To: Ian Lepore <ian@freebsd.org>
Cc: Hans Petter Selasky <hps@selasky.org>, "freebsd-hackers@freebsd.org"
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Subject: Re: allow ffs & co. a binary search
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Hi,

On Thu, 11 Jun 2015 06:57:51 -0600
Ian Lepore <ian@freebsd.org> wrote:

> On Thu, 2015-06-11 at 15:21 +0800, Erich Dollansky wrote:
> > On Sun, 07 Jun 2015 08:53:18 +0200
> > Hans Petter Selasky <hps@selasky.org> wrote:
> > 
> Is there any reason that this whole change, userland and kernel, isn't
> just:
> 
> #define ffs(n) __builtin_ffs(n)

I did not see this. Where is it?

Of course, if this is already done, it does not have to be done again.

Erich