Re: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U5

[Ingo Molnar]

* K.R. Foley <kr@xxxxxxxxxx> wrote:

> Ingo Molnar wrote:
> >i have released the -U5 Real-Time Preemption patch:
> >
> >  http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc4-mm1-U5
> >
> 
> Ingo,
> 
> *** Warning: "__you_cannot_kmalloc_that_much" 
> [drivers/scsi/aacraid/aacraid.ko] undefined!
> 
> This just appeared in U5. I was trying to track this one down just
> because I saw it, even though I don't need aacraid. I am having a hell
> of a time tracking down what changed that would cause this, but I
> figure you will know exactly what changed that would cause it. :)

i suspect this is due to the size increase of semaphores if
CONFIG_RWSEM_DEADLOCK_DETECT is enabled. Try lowering
CONFIG_RWSEM_MAX_OWNERS from the default 64 to 32, does that help?

	Ingo
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