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From: David Woodhouse <dwmw2@infradead.org>
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To: Ingo Molnar <mingo@elte.hu>
Cc: Zwane Mwaikambo <zwane@mwaikambo.name>,
       Linus Torvalds <torvalds@transmeta.com>, Robert Love <rml@tech9.net>,
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Subject: Re: [PATCH][RFC] per isr in_progress markers 
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mingo@elte.hu said:
>  this is something i have a 0.5 MB patch for that touches a few
> hundred drivers. I can dust it off if there's demand - it will break
> almost nothing because i've done the hard work of adding the default
> 'no work was done' bit to every driver's IRQ handler. 

Note that you can also survive IRQ storms this way -- if all handlers 
returned 'no work was done' and you get over $N irqs per second, disable 
that IRQ for a while.

--
dwmw2


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