[lttng-dev] Monitor user space threads without user events

[Zvi Vered]

Hi Kienan,

Thank you very much !
Zvika

On Mon, Apr 15, 2024 at 9:25 PM Kienan Stewart via lttng-dev <
lttng-dev at lists.lttng.org> wrote:

> Hi Zvika,
>
> with a session that has kernel events enabled, I think you could use the
> sched_switch event.
>
> thanks,
> kienan
>
> On 4/6/24 12:20 AM, Zvi Vered via lttng-dev wrote:
> > Hello,
> >
> > My user space process contains 2 threads:
> >
> > First thread is blocked upon a kernel event created by a hardware
> > interrupt handled by the kernel.
> > The  thread is sending ioctl which is blocked till this interrupt occurs.
> >
> > Second thread has just a 5msec sleep. It does something and then sleeps
> > for 5msec. Forever.
> >
> > Is it possible to see when each thread is running (and not blocked or
> > sleeps) ?
> > I know how to do it with user events. I wonder if it's possible without
> > any extra code.
> >
> > Thank you,
> > Zvika
> >
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev at lists.lttng.org
> > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.lttng.org/pipermail/lttng-dev/attachments/20240415/7a89f727/attachment.htm>