[PATCHv2 1/2] ARM: perf_event: allow platform-specific interrupt handler

[Rabin Vincent]

On Thu, Feb 17, 2011 at 22:03, Will Deacon <will.deacon at arm.com> wrote:
>> I gave this a try, along with the modifications to enable IRQ_PER_CPU
>> and have the pmu code use the appropriate flags and set the affinity.
>> Didn't work though; it always ends up triggering the spurious IRQ check.
>
> Hmm, that doesn't sound right. Did you have any synchronisation to ensure
> that the CPU without the overflow didn't return IRQ_NONE until the handling
> CPU had returned IRQ_HANDLED?

No.  What kind of synchronization do you mean?