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From: "Jayachandran C." <jchandra@freebsd.org>
To: Adrian Chadd <adrian@freebsd.org>
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Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
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Subject: Re: svn commit: r225892 - head/sys/mips/mips
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Hi Adrian,

On Sat, Oct 1, 2011 at 11:26 AM, Adrian Chadd <adrian@freebsd.org> wrote:
> Author: adrian
> Date: Sat Oct =A01 05:56:25 2011
> New Revision: 225892
> URL: http://svn.freebsd.org/changeset/base/225892
>
> Log:
> =A0Disable using wait in cpu_idle() until a better solution to timer and
> =A0interrupt handling can be implemented.

Taking out the whole thing looks like an overkill here - this is
especially bad on XLR where busy wait on a hardware thread will take
away cycles from the other hardware threads.

The better workaround would be to revert to the version before
r216862, which does not have the critical_enter/cpu_idleclock.

JC.