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

[Paul E. McKenney]

On Sun, Jun 24, 2012 at 04:05:00PM +0930, Rusty Russell wrote:
> 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.
> 
> 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.

+1 from me!

							Thanx, Paul

> 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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