coresight: etm4x: Add lock for reading virtual context ID comparator

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Updates to the values and the index are protected via the spinlock.
Ensure we use the same lock to read the value safely.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20220204152403.71775-2-leo.yan@linaro.org

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Leo Yan 2022-02-04 23:24:00 +08:00 • committed by Suzuki K Poulose

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commit bf0ef4f12c

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drivers/hwtracing/coresight/coresight-etm4x-sysfs.c

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