Re: [PATCH] x86_64: resize NR_IRQS for large machines

[Alan Mayer]

On Tue, 25 Mar 2008, Ingo Molnar wrote:

> 
> * Alan Mayer <ajm@xxxxxxx> wrote:
> 
> > Subject: [PATCH] x86_64: resize NR_IRQS for large machines
> > 
> > From: Alan Mayer <ajm@xxxxxxx>
> > 
> > On machines with very large numbers of cpus, tables that are 
> > dimensioned by NR_IRQS get very large, especially the irq_desc table.  
> > They are also very sparsely used.  When the cpu count is > 
> > MAX_IO_APICS, use MAX_IO_APICS to set NR_IRQS, otherwise use NR_CPUS.
> > 
> > Signed-off-by: Alan Mayer <ajm@xxxxxxx>
> > Reviewed-by: Christoph Lameter <clameter@xxxxxxx>
> 
> thanks, applied. I suspect this can wait until .26, as there appears to 
> be a number of other patches that you need to get these boxes running on 
> vanilla, right?
> 
> 	Ingo

That's right.  Thanks.

		--ajm

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