coresight: Properly address concurrency in sink::update() functions

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When operating in CPU-wide trace scenarios and working with an N:1
source/sink HW topology, update() functions need to be made atomic
in order to avoid racing with start and stop operations.

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>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Mathieu Poirier 2019-04-25 13:52:58 -06:00 • committed by Greg Kroah-Hartman

parent 12dfc9e022

commit 0916447c87

2 changed files with 6 additions and 2 deletions

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4

drivers/hwtracing/coresight/coresight-etb10.c

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4

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

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