coresight: tmc-etf: Properly set AUX buffer head in snapshot mode

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Unify amongst sink drivers how the AUX ring buffer head is communicated
to user space.  That way the same algorithm in user space can be used to
determine where the latest data is and how much of it to access.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Mathieu Poirier 2019-06-19 11:29:07 -06:00 • committed by Greg Kroah-Hartman

parent 3ecb03022a

commit 0402f75efe

1 changed files with 9 additions and 5 deletions

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drivers/hwtracing/coresight/coresight-tmc-etf.c

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