From: Jon Masters <jonathan@jonmasters.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-rt-users <linux-rt-users@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>
Subject: Re: try_module_get and friends
Date: Tue, 04 Mar 2008 15:07:08 -0500 [thread overview]
Message-ID: <1204661228.8244.15.camel@jcmlaptop> (raw)
In-Reply-To: <1204608506.11912.9.camel@perihelion>
On Tue, 2008-03-04 at 00:28 -0500, Jon Masters wrote:
> On Tue, 2008-03-04 at 00:20 -0500, Jon Masters wrote:
>
> > So, what's protecting the RT kernel from falling over if a CPU frequency
> > governor module is removed at the wrong moment?
>
> That's a contrived example, it does the right thing in the ones I've
> looked it, but it just occurred to me that this might not be general for
> kernel code where random pointers to modules are getting thrown around.
I recommend not setting CONFIG_MODULE_UNLOAD on RT kernels for now. I
looked at programmatically implementing this in Kconfig, but it seems
that CONFIG_MODULE_UNLOAD is never explicitly set anywhere, it's simply
in the deconfig for each architecture - anyone know Kconfig well enough
to tell us how to fix up Kconfig.preempt to do the right thing?
Jon.
next prev parent reply other threads:[~2008-03-04 20:39 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-04 5:20 try_module_get and friends Jon Masters
2008-03-04 5:28 ` Jon Masters
2008-03-04 20:07 ` Jon Masters [this message]
2008-03-05 19:30 ` Daniel Walker
2008-03-05 19:47 ` Steven Rostedt
2008-03-05 20:28 ` Daniel Walker
2008-03-05 20:46 ` Frank Ch. Eigler
2008-03-05 20:54 ` Steven Rostedt
2008-03-05 21:15 ` Daniel Walker
2008-03-07 16:16 ` Paul E. McKenney
2008-03-05 21:14 ` Steven Rostedt
2008-03-10 5:53 ` Jon Masters
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