Re: [RFC PATCH 0/2] workqueue: Introduce PF_WQ_RESCUE_WORKER

From: Aaron Tomlin
Date: Thu Aug 03 2023 - 16:19:24 EST


> But why do you need to identify rescue workers? What are you trying to
> achieve?

Hi Tejun,

I had a conversation with a colleague of mine. It can be useful to identify
and account for all kernel threads. From the perspective of user-mode, the
name given currently to the rescuer kworker is ambiguous. For instance,
"kworker/u16:9-kcryptd/253:0" is clearly identifiable as an unbound kworker
for the specified workqueue which can have their CPU affinity adjusted as
you mentioned before. I think if we followed the same naming convention
for a rescuer kworker then it would be more consistent. I'll send a patch
so it can be discussed further.


Kind regards,
--
Aaron Tomlin