[PATCH v2 1/2] perf cs-etm: Fix decoding for sparse CPU maps

[Leo Yan]

On Mon, Jan 19, 2026 at 03:43:18PM +0000, Coresight ML wrote:

[...]

> > > > > > +		auxtrace_fragment.auxtrace.idx = etmq->queue_nr;

> Indeed, per-thread mode needs to be handled separately.
> 
> On the Juno board (6 CPUs), I see "etmq->queue_nr=6".  It seems a bit
> odd that this value is used as the index.  Even in per-thread mode, the
> index is still set to 6.  For correctness, should we instead set the
> index to the CPU ID, and use 0 for per-thread mode?

Sorry I made a mistake.

I messed up "etm->queues.nr_queues" and "etmq->queue_nr".  I can confirm
that "etmq->queue_nr" stores the CPU ID and 0 for per-thread mode.  I
verified the patch:

Tested-by: Leo Yan <leo.yan at arm.com>