[Ksummit-2012-discuss] [Fwd: [ATTEND] Module signing, cpu hotplug and some cpumasks.]

Kasatkin, Dmitry dmitry.kasatkin at intel.com
Wed Jun 27 10:46:45 UTC 2012


On Tue, Jun 26, 2012 at 3:16 PM, Mimi Zohar <zohar at linux.vnet.ibm.com> wrote:
> -------- Forwarded Message --------
> From: Rusty Russell <rusty at rustcorp.com.au>
> To: ksummit-2012-discuss at lists.linuxfoundation.org
> Subject: [Ksummit-2012-discuss] [ATTEND] Module signing,        cpu hotplug and
> some cpumasks.
> Date: Sun, 24 Jun 2012 16:05:00 +0930
>
> Hi all,
>
>        I'd really like to try to get some consensus on module signing,
> since there's the "in the .ko" vs "in an xattr" fight.  I don't really
> care, but it'd be nice to get the players in one place with a deadline,
> such as David Howells, Dmitry Kasatkin, Lucas De Marchi an Jon Masters.
> If we all get there, other module stuff will no doubt come up.
>

Hello,

I will be there at LinuxCon and I would be happy to participate in
this discussion as well.

- Dmitry


> CPU hotplug is something ARM is using for powersaving, for better or
> worse.  So much for my jokes about waiting for a cpu hotplug rate
> benchmark before any optimization occurred; we're there.  Thomas
> Gleixner's got some great patches, but we're due for a complete rewrite
> IMHO.  It's developed into a real mess, and the -rt guys hate
> stop_machine.
>
> Finally, it'd be nice to get consensus on what to do with offstack
> cpumasks.  There are a few final patches sitting in limbo before we can
> actually change cpumask_var_t to only allocate nr_cpus bits.  Would be
> nice to kick them along.
>
> Cheers,
> Rusty.
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