Re: [PATCH 0/4] coresight: Add ETR-PERF polling.

Denis Nikitin
2021-05-27T18:00:07Z

On Thu, May 27, 2021 at 8:07 AM Leo Yan <leo.yan@linaro.org> wrote:
>
> Hi Denis,
>
> On Thu, May 27, 2021 at 12:50:28AM -0700, Denis Nikitin wrote:
>
> [...]
>
> > Thanks for looking into this problem.
> > Initially I said that the issue with the excessive profile size was
> > not reproducible
> > when I applied https://lists.linaro.org/pipermail/coresight/2021-April/006254.html.
> > But after a couple of runs the issue came back.
> > Reproducibility depends on the system workload and it happens more often if
> > we run any workload.
>
> Thanks a lot for the testing.
>
> > I tried the fix you shared and so far I don't see the issue anymore.
>
> Could you confirm here you mentioend "the fix" is the same one with [1]?

Correct.

>
> If these two fixes (one is for kernel driver and another is in the
> perf tool) can resolve your issue, this is great! I will resend the
> patches. Sorry for some delay at my side.

Sounds great. Thanks, Leo!
I will take a look at runtime overhead meanwhile.

- Denis

>
> Thanks,
> Leo
>
> [1] https://lists.linaro.org/pipermail/coresight/2021-May/006411.html