Re: [PATCH 0/2] ipc/sem.c: Race in sem_lock()

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On Tue, 2013-09-24 at 08:20 +0200, Manfred Spraul wrote: 
> Hi Greg,
> 
> On 09/23/2013 11:28 PM, Greg KH wrote:
> > <formletter>
> >
> > This is not the correct way to submit patches for inclusion in the
> > stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
> > for how to do this properly.
> >
> > </formletter>
> Fixing stable will be interesting:
> Starting with 3.10, changes were introduced that have improved the 
> scalability by something like factor 100.
> (factor 100 for sysv sem for calls that do not sleep on a 8 socket, 
> 64-way Intel system)
> 
> Unfortunately, we are still fixing bugs - and the changes are 
> definitively not trivial.
> 
> Thus the next long-term kernel must either go backward to the 3.9 code 
> or forward - hopefully all bugs will be fixed until the release of 3.12.

As soon as I finish some maintenance, I'll wedge the "or forward" pile
into 3.10-rt and beat it up on 8 socket box.

-Mike

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