Re: [PATCH v5 06/12] coresight: etm4x: fix leaked trace id

Leo Yan
2026-04-17T08:41:21Z

Hi Jie,

On Fri, Apr 17, 2026 at 09:01:17AM +0800, Jie Gan wrote:

[...]

> ... we still need support static trace ID allocation in parallel for
> the dummy sources and we should not break this logic in future refactor.

Just confirm what is the reason you need to use static trace ID for the
dummy sources?

I am wandering if we could use dev->devt as trace ID for dummy
devices. Since the device's MAJOR number is non-zero and occupies the
upper bits (see MINORBITS), it is naturally separated from the hardware
trace ID range. If so, we even don't need to bother ID alloc/release.

Thanks,
Leo