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coresight: etb10: Properly set AUX buffer head in snapshot mode
authorMathieu Poirier <mathieu.poirier@linaro.org>
Wed, 19 Jun 2019 17:29:05 +0000 (11:29 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 19 Jun 2019 18:29:13 +0000 (20:29 +0200)
commit514e5150e7c6b247d7a473f935fc49d6f194688b
treeadca9cea4d6808001c60292eefe2a9cfbedf7c16tree | snapshot
parentf506a547a9f4dc40fc24a176a98058c94108185bcommit | diff
coresight: etb10: 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-etb10.c diff | blob | history
Domain: System / Kernel;