[PATCH 10/14] perf cs-etm: Don't print missing buffers in snapshot mode
From: James Clark <james.clark@linaro.org>
Date: 2026-08-11 15:31:17
Also in:
linux-arm-kernel, linux-perf-users, lkml
Subsystem:
arm/coresight framework and drivers, performance events subsystem, performance events tooling arm64, the rest · Maintainers:
Suzuki K Poulose, Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
The driver produces lots of AUX records for trace data that was never captured in snapshot mode. Downgrade this to a pr_debug3 message as it's only an error in normal mode. Signed-off-by: James Clark <james.clark@linaro.org> --- tools/perf/util/cs-etm.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 5bafee31cf4b..a80f34530917 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c@@ -3317,6 +3317,9 @@ static int cs_etm__queue_aux_records_cb(struct perf_session *session, union perf struct perf_sample sample; int ret; struct auxtrace_index_entry *ent; + struct cs_etm_auxtrace *etm = container_of(session->auxtrace, + struct cs_etm_auxtrace, + auxtrace); struct auxtrace_index *auxtrace_index; struct evsel *evsel; size_t i;
@@ -3370,8 +3373,10 @@ static int cs_etm__queue_aux_records_cb(struct perf_session *session, union perf * don't exit with an error because it will still be possible to decode other aux records. */ if (!found) { - pr_err("CS ETM: Couldn't find auxtrace buffer for aux_offset: %#"PRI_lx64 - " tid: %d cpu: %d\n", event->aux.aux_offset, sample.tid, sample.cpu); + int level = etm->snapshot_mode ? 3 : 0; + + pr_debugN(level, "CS ETM: Couldn't find auxtrace buffer for aux_offset: %#"PRI_lx64 + " tid: %d cpu: %d\n", event->aux.aux_offset, sample.tid, sample.cpu); } ret = 0; out:
--
2.43.0