linux-kernel - Re: [PATCH] kthread: run kthreadd with max priority SCHED

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Message-Id: <1198319970.5509.10.camel@homer.simson.net>
Date:	Sat, 22 Dec 2007 11:39:30 +0100
From:	Mike Galbraith <efault@....de>
To:	Jon Masters <jcm@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Schmidt <mschmidt@...hat.com>,
	linux-kernel@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Satoru Takeuchi <takeuchi_satoru@...fujitsu.com>
Subject: Re: [PATCH] kthread: run kthreadd with max priority SCHED_FIFO


On Sat, 2007-12-22 at 04:52 -0500, Jon Masters wrote:

> So, user tasks running with SCHED_FIFO should be able to lock a system?
> I guess I see both sides of this argument - yes, it's userspace at
> fault, but in other cases when userspace is at fault, we take action
> (OOM, segfault, others). Isn't this situation just another case where
> the kernel needs to avoid the evils of userland going awry?

FYI, Ingo queued the below.

http://lkml.org/lkml/2007/10/31/344

	-Mike




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