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SubjectQuery: Notifier support for callback profiling
Hi ,

Can we profile driver specific notifier callback from Linux notifier.
Sometimes we need to debug which callback is taking more time or where
it is stuck.
If kernel/notifier.c provide generic mechanism to profile callbacks that
save profiling individual callbacks.

Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.

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