From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ian Rogers <irogers@google.com>
Cc: James Clark <james.clark@linaro.org>,
John Garry <john.g.garry@oracle.com>,
Will Deacon <will@kernel.org>, Mike Leach <mike.leach@linaro.org>,
Leo Yan <leo.yan@linux.dev>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Namhyung Kim <namhyung@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Akio Kakuno <fj3333bs@aa.jp.fujitsu.com>,
Yoshihiro Furudera <fj5100bi@fujitsu.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-perf-users@vger.kernel.org
Subject: Re: [PATCH] perf vendor events arm64: Remove uncountable events
Date: Tue, 13 Jan 2026 17:32:37 -0300 [thread overview]
Message-ID: <aWar5eUPISsiLA00@x1> (raw)
In-Reply-To: <CAP-5=fWQU59Vyb6y+W6ObOTh3nzFSofsn8sc6JzwZp7FiV+n6w@mail.gmail.com>
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@linaro.org> wrote:
> > On 02/01/2026 3:29 pm, Ian Rogers wrote:
> > > On Wed, Dec 31, 2025 at 4:13 AM James Clark <james.clark@linaro.org> 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@google.com>
Thanks, applied to perf-tools-next,
- Arnaldo
prev parent reply other threads:[~2026-01-13 20:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-31 12:12 [PATCH] perf vendor events arm64: Remove uncountable events James Clark
2026-01-02 15:29 ` Ian Rogers
2026-01-03 16:38 ` James Clark
2026-01-04 1:27 ` Ian Rogers
2026-01-05 10:23 ` James Clark
2026-01-13 20:32 ` Arnaldo Carvalho de Melo [this message]
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