Re: [PATCH] perf vendor events arm64: Remove uncountable events

[Arnaldo Carvalho de Melo]

On Sat, Jan 03, 2026 at 05:27:49PM -0800, Ian Rogers wrote:
> On Sat, Jan 3, 2026 at 8:38 AM James Clark <james.clark@xxxxxxxxxx> wrote:
> > On 02/01/2026 3:29 pm, Ian Rogers wrote:
> > > On Wed, Dec 31, 2025 at 4:13 AM James Clark <james.clark@xxxxxxxxxx> wrote:
> > >> These events are never countable by the PMU and are only intended to
> > >> be used as external inputs to trace. Therefore showing them in 'perf
> > >> list' is misleading so remove them.

> > > What does "trace" mean in this context?

> > CPU trace, Either ETE (Embedded Trace Extension) or ETM (Embedded Trace
> > Macrocell). You can select PMU events as inputs to the trace block to
> > make it do things like start and stop tracing.

> Ah ok, trace immediately makes me think of `perf trace` currently.
> Presumably there's no perf integration for ETE and ETM that somehow
> use these event encodings? Looks not and the changes make sense to me.
> 
> Reviewed-by: Ian Rogers <irogers@xxxxxxxxxx>

Thanks, applied to perf-tools-next,

- Arnaldo