coresight: etm3x: Set active path on target CPU

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Set the path pointer on the target CPU during ETM enable and disable.

This ensures the device mode and path pointer are updated together and
observed atomically by the CPU PM notifier.

Tested-by: James Clark <james.clark@linaro.org>
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Tested-by: Jie Gan <jie.gan@oss.qualcomm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20260515-arm_coresight_path_power_management_improvement-v14-21-f88c4a3ecfe9@arm.com

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Leo Yan 2026-05-15 21:08:28 +01:00 • committed by Suzuki K Poulose

parent b6d54a94dc

commit bc99077507

1 changed files with 14 additions and 3 deletions

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drivers/hwtracing/coresight/coresight-etm3x-core.c

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