This is an epic to group the logging implementations that have been split out by spec. This is a cross-DRIVERS initiative (linked)

Summary

A common complaint from our support team is that they don't know how to get debugging information out of drivers. Some drivers provide debug logging for this purpose, others do not. For drivers that do provide it, the log messages produced and the mechanisms for enabling debug logging are not consistent.

The goal of this project is to define a default set of debug logging messages that drivers should produce, and a standardized, trivial mechanism drivers should support for enabling, disabling, and configuring debug logging. This will provide TSEs, CEs and users an easy way to get debugging information out of our drivers. Each driver should additionally provide easily discoverable documentation on how to enable logging and what features are provided.

The key idea here is to provide consistency across drivers, making it easier to support all drivers and far easier to document how to debug specific issues.