Re: hot cache line due to note_interrupt()

[Jeff Garzik]

Linus Torvalds wrote:
> The fact is, irqdebug _has_ resulted in a few reports where instead of a 
> silent and total lock-up, the kernel just said "I'll disable this irq" and 
> the machine continued limping along.


I strongly agree.

There are two huge reasons I develop and debug drivers solely in 2.6 
now: kksymoops and irqdebug.  Both have helped a great deal in tracking 
down problems.  Indeed, screaming irqs that lead to lockups are 
instantly detected in 2.6.

But hey... I'm just a developer.  Who can say whether it should be on by 
default?

	Jeff



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