Joe Korty wrote:
> Create /proc/all-interrupts for some architectures.
>
> Create a version of /proc/interrupts that displays _every_
> IRQ vector, not just those that someone thought might be
> interesting, and add an entry in the commentary column
> for those vectors which lacked such a comment.
>
> Rationale: /proc/interrupts is not truly useful unless it
> displays every IRQ vector, not just those somebody thought
> would be interesting. For example, since /proc/interrupts
> does not display the rescheduling interrupt, the occurance
> of rescheduling interrupt floods ends up affecting
> latencies, yet without an entry in /proc/interrupts, it
> is difficult to discern why latencies are being affected.
>
> Rather than modify /proc/interrupts, this patch creates
> a new version of /proc/interrupts, on the off-chance
> that adding new lines to /proc/interrupts, and appending
> new fields to the end of old lines, might break some
> longstanding script. However, these kinds of changes
> traditionally do not affect scripts, so it might be
> reasonable to fold /proc/all-interrupts back into
> /proc/interrupts.
I think that would be the right thing to do. We have added things to
/proc/interrupts in the past.
-hpa
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