Re: [announce] [patch] limiting IRQ load, irq-rewrite-2.4.11-B5

Ingo Molnar
2001-10-02T20:53:53Z

On Tue, 2 Oct 2001, Alan Cox wrote:

> What you really care about is limiting the total amount of CPU time
> used for interrupt processing so that usermode progress is made.
> [...]

exactly. The estimator in -D9 tries to achieve precisely this, both
hardirqs and softirqs are measured.

> Silencing a specific target cannot be done by IRQ masking, you have to
> ask the controller to shut up. It may be the default "shut up" handler
> is disable_irq but that is non optimal.

this could be done later on, but i think this is out of question for 2.4,
as it needs extensive changes in irq handler and network driver API.

Ingo