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| author | Leo Yan <leo.yan@linaro.org> | 2021-08-09 19:14:00 +0800 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2021-10-27 11:44:36 -0600 |
| commit | 26701ceb4c2c6bfa5f8c8984fa1a1ea08fa0f02c (patch) | |
| tree | 1a6e53f4871c2945f0d165b66569a1d274a526e5 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | 4d5d88baa6c838bf92ed6a63c50dd3167c5a4956 (diff) | |
coresight: tmc-etr: Add barrier after updating AUX ring buffer
Since a memory barrier is required between AUX trace data store and
aux_head store, and the AUX trace data is filled with memcpy(), it's
sufficient to use smp_wmb() so can ensure the trace data is visible
prior to updating aux_head.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20210809111407.596077-3-leo.yan@linaro.org
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions