Re: [PATCH v3 3/3] genirq: Use the maple tree for IRQ descriptors management

[Thomas Gleixner]

Yujie!

On Fri, Apr 28 2023 at 09:33, Yujie Liu wrote:
> On Wed, Apr 26, 2023 at 02:08:54PM +0200, Thomas Gleixner wrote:
>> Can you please retest this on v6.3 and report back when the problem
>> persists?
>
> Thanks for your help looking into this problem.
>
> The problem persists when tested on v6.3, but not 100% reproducible.
> We ran the test on v6.3 and v6.3+patch each for 20 runs. There are 9
> failed runs on v6.3+patch, while v6.3 is all clean. Full dmesg is
> attached.

Under the assumption that the code is correct, then the effect of this
patch is that it changes the timing. Sigh.

  1) Does this happen with a 64-bit kernel too?

  2) Can you enable the irq_vector:vector_*.* tracepoints and provide
     the trace?

And please provide /proc/interrupts from that machine.

Thanks,

        tglx