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    SubjectRe: [PATCH 4/6 -tip] perf_counter: Add Generalized Hardware interrupt support for AMD

    * Jaswinder Singh Rajput <> wrote:

    > $ ./perf stat -e interrupts -e masked -e int-pending-mask-cycles -- ls -lR /usr/include/ > /dev/null
    > Performance counter stats for 'ls -lR /usr/include/':
    > 377 interrupts
    > 53429936 int-mask-cycles
    > 1119 int-pending-mask-cycles
    > 0.371457539 seconds time elapsed

    Agreed, this is another useful generalization - and the 'cycles
    pending' metrics are not retrievable via any software means.

    We could and should probably add a software counter for hardirqs as
    wel. That would allow the vector/irqnr information to be passed in,
    and it would allow architectures without irq metrics in the PMU to
    have this counter too.

    This way we could profile based on a specific interrupt source only
    - say based on the networking card.


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