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From: John Baldwin <jhb@FreeBSD.org>
To: David Xu <davidxu@FreeBSD.org>
Date: Thu, 6 Jan 2005 13:30:05 -0500
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cc: Perforce Change Reviews <perforce@FreeBSD.org>
Subject: Re: PERFORCE change 68252 for review
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On Wednesday 05 January 2005 07:02 pm, David Xu wrote:
> John Baldwin wrote:
> >On Tuesday 04 January 2005 08:14 am, David Xu wrote:
> >>http://perforce.freebsd.org/chv.cgi?CH=68252
> >>
> >>Change 68252 by davidxu@davidxu_tiger on 2005/01/04 13:14:06
> >>
> >>	insert "pause" instructor for  i386.
> >>	style fix.
> >
> >You can use 'cpu_spinwait()' for this to be MI.
>
> I know there is header file cpu.h, but it is too kernel oriented,
> not every arch provides the function to userland, e.g,
> alpha defined it in #ifdef _KERNEL section, userland can not
> use it, why isn't it in cpufunc.h ?

That should be fixed then.  I think cpu_spinwait() should be ok for userland 
use, so I think it can be moved to cpufunc.h.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org