diff mbox series

[v3,2/3] perf cs-etm: Start reading 'Z' --itrace option

Message ID 20210517131741.3027-3-james.clark@arm.com (mailing list archive)
State New, archived
Headers show
Series perf cs-etm: Handle valid-but-zero timestamps | expand

Commit Message

James Clark May 17, 2021, 1:17 p.m. UTC 
Recently the 'Z' --itrace option was added to override detection
of timeless decoding. This is also useful in Coresight to work around
issues with invalid timestamps on some hardware.

When the 'Z' option is provided, the existing timeless decoding mode
will be used, even if timestamps were recorded.

Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
---
 tools/perf/util/cs-etm.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index a752fe06f170..64536a6ed10a 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -2473,6 +2473,10 @@  static bool cs_etm__is_timeless_decoding(struct cs_etm_auxtrace *etm)
 	struct evlist *evlist = etm->session->evlist;
 	bool timeless_decoding = true;
 
+	/* Override timeless mode with user input from --itrace=Z */
+	if (etm->synth_opts.timeless_decoding)
+		return true;
+
 	/*
 	 * Circle through the list of event and complain if we find one
 	 * with the time bit set.