Date: Thu, 06 Jan 2005 08:02:09 +0800 From: David Xu <davidxu@freebsd.org> To: John Baldwin <jhb@freebsd.org> Cc: Perforce Change Reviews <perforce@freebsd.org> Subject: Re: PERFORCE change 68252 for review Message-ID: <41DC8001.9080403@freebsd.org> In-Reply-To: <200501051747.18388.jhb@FreeBSD.org> References: <200501041314.j04DEVE3017245@repoman.freebsd.org> <200501051747.18388.jhb@FreeBSD.org>
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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 ? David
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