Re: [RFC][PATCH] irq_work

Huang Ying
2010-06-24T06:50:46Z

On Thu, 2010-06-24 at 14:47 +0800, Peter Zijlstra wrote:
> On Thu, 2010-06-24 at 14:43 +0800, Huang Ying wrote:
> > Hi, Peter,
>
> > I fact I uses exactly the similar method in my patches, just trigger it
> > with soft_irq instead of IRQ. Please take a look at
> > nmi_return_notifier_schedule in
>
> But then why still use softirq? Once you have this its completely
> useless.

Some systems have no self interrupt, for example the system without
APIC. We need to provide a fallback for them. soft_irq can help here.

Best Regards,
Huang Ying