Re: [PATCH 0/8] tip related: radix tree for spareseirq and logical flat clean up

From: Eric W. Biederman
Date: Sat Feb 13 2010 - 06:39:49 EST


Yinghai Lu <yinghai@xxxxxxxxxx> writes:

> please check
>
> Subject: [PATCH] x86: use vector_desc instead of vector_irq
>
> Eric pointed out that radix tree version of irq_to_desc will magnify delay on the path
> of handle_irq.
> use vector_desc to reduce the calling of irq_to_desc.

You have missed Xen's handling of handle_irq. Let's just kill it like: