linux-kernel - Re: 2.6.26.6-rt11: BUGs (sleeping function called from invalid context)

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Date:	Fri, 07 Nov 2008 13:35:10 -0800
From:	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>
Subject: Re: 2.6.26.6-rt11: BUGs (sleeping function called from invalid
	context)

On Fri, 2008-11-07 at 20:16 +0100, Peter Zijlstra wrote:
> On Fri, 2008-11-07 at 14:01 -0500, Steven Rostedt wrote:
> > Peter, I think we've seen this before. It is the highmem code sleeping.
> 
> I've been working on an alternative kmap_atomic implementation for -rt,
> the below has been build and booted but not stressed, anybody care to
> give it a spin ?

I'll give it a try. Anything in particular I should try to do? Or not
do? Or watch for?

-- Fernando


> ---
>  arch/x86/mm/highmem_32.c  |  130 ++++++++++++++++++++++++++++++++++++++++++---
>  include/asm-x86/highmem.h |   11 ----
>  include/linux/sched.h     |    5 ++
>  kernel/sched.c            |   10 ++++
>  4 files changed, 137 insertions(+), 19 deletions(-)
>  [MUNCH]


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