Re: [PATCH] x86-32: Allocate irq stacks seperate from percpu area

[Eric Dumazet]

Le mercredi 27 octobre 2010 Ã 01:43 -0400, Brian Gerst a Ãcrit :
> The percpu allocator cannot handle alignments larger than one page.
> Allocate the irq stacks seperately, and only keep the pointers as
> percpu data.
> 
> Signed-off-by: Brian Gerst <brgerst@xxxxxxxxx>

>  
> -	irqctx = &per_cpu(hardirq_stack, cpu);
> +	irqctx = (union irq_ctx *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER);

Hmm, then we lose NUMA affinity for stacks.



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