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
>
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