perf cs-etm: Use new OpenCSD consistency checks
authorJames Clark <james.clark@linaro.org>
Mon, 16 Sep 2024 13:57:33 +0000 (14:57 +0100)
committerNamhyung Kim <namhyung@kernel.org>
Tue, 24 Sep 2024 18:46:46 +0000 (11:46 -0700)
commitba5ae78a5a2a956d281ac62f581ab95e618bbf18
tree2f6c32859d913ba302cf2557172f2aafb02320dd
parent5afd032961e8465808c4bc385c06e7676fbe1951
perf cs-etm: Use new OpenCSD consistency checks

Previously when the incorrect binary was used for decode, Perf would
silently continue to generate incorrect samples. With OpenCSD 1.5.4 we
can enable consistency checks that do a best effort to detect a mismatch
in the image. When one is detected a warning is printed and sample
generation stops until the trace resynchronizes with a good part of the
image.

Reported-by: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Closes: https://lore.kernel.org/all/20240719092619.274730-1-gankulkarni@os.amperecomputing.com/
Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Tested-by: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Ruidong Tian <tianruidong@linux.alibaba.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Benjamin Gray <bgray@linux.ibm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: coresight@lists.linaro.org
Cc: John Garry <john.g.garry@oracle.com>
Cc: scclevenger@os.amperecomputing.com
Link: https://lore.kernel.org/r/20240916135743.1490403-3-james.clark@linaro.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
tools/perf/util/cs-etm-decoder/cs-etm-decoder.c