Re: userspace irq balancer

[William Lee Irwin III]

On Mon, 26 May 2003, William Lee Irwin III wrote:
>> It's done to acknowledge every interrupt. Also, there is additional
>> cost associated with bouncing the lock's cacheline.

On Mon, May 26, 2003 at 10:45:20PM -0400, Zwane Mwaikambo wrote:
> Bah, determining owning ioapic of an irq would get too ugly, you can have 
> the same irq connected to multiple ioapics so which to lock?

It tends to be all or one, detectable with IO_APIC_IRQ().

-- wli