From owner-freebsd-hackers@FreeBSD.ORG  Wed Oct  3 02:46:57 2007
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Date: Tue, 2 Oct 2007 22:46:55 -0400 (EDT)
From: Daniel Eischen <deischen@freebsd.org>
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To: Alfred Perlstein <alfred@freebsd.org>
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Cc: hackers@freebsd.org
Subject: Re: Critical Sections for userland.
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On Tue, 2 Oct 2007, Alfred Perlstein wrote:

> Hi guys, we need critical sections for userland here.
>
> This is basically to avoid a process being switched out while holding
> a user level spinlock.

Setting the scheduling class to real-time and using SCHED_FIFO
and adjusting the thread priority around the lock doesn't work?

-- 
DE