linux-kernel - Re: [bug] very high non-preempt latency in context_struct_compute

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Message-ID: <Line.LNX.4.64.0706041853210.14560@d.namei>
Date:	Mon, 4 Jun 2007 18:54:33 -0400 (EDT)
From:	James Morris <jmorris@...ei.org>
To:	Paul Moore <paul.moore@...com>
cc:	Stephen Smalley <sds@...ho.nsa.gov>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	James Carter <jwcart2@...ho.nsa.gov>,
	Eric Paris <eparis@...isplace.org>,
	Karl MacMillan <kmacmillan@...talrootkit.com>,
	"Christopher J. PeBenito" <cpebenito@...sys.com>,
	Joshua Brindle <method@...icmethod.com>,
	KaiGai Kohei <kaigai@...gai.gr.jp>
Subject: Re: [bug] very high non-preempt latency in context_struct_compute_av()

On Mon, 4 Jun 2007, Paul Moore wrote:

> Okay, for some reason I thought someone had found a way to make 
> RCU "preemptable" through the real-time work, maybe I'm just confused 
> again :)

It is preemptible in the RT kernel, but as Ingo points out, nothing should 
be even trying to do something for 130ms in the kernel.


- James
-- 
James Morris
<jmorris@...ei.org>
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