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coresight: tmc-etr: Properly set AUX buffer head in snapshot mode
authorMathieu Poirier <mathieu.poirier@linaro.org>
Wed, 19 Jun 2019 17:29:06 +0000 (11:29 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 19 Jun 2019 18:29:13 +0000 (20:29 +0200)
commit3ecb03022a25b3f089b93a35f608ea7ee6a244aa
tree4947be32cfca46316b3feade696685bee9f2b345tree | snapshot
parent514e5150e7c6b247d7a473f935fc49d6f194688bcommit | diff
coresight: tmc-etr: Properly set AUX buffer head in snapshot mode

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>
drivers/hwtracing/coresight/coresight-tmc-etr.c diff | blob | history
Domain: System / Kernel;