[LU-11698] Add debugfs file to print checksum speed

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Labels: easy
• Assignee: Arshad Hussain
• Reporter: Andreas Dilger

Description

Add a /sys or /sys/kernel/debug file that prints out the speed of the different checksum types. This is computed at libcfs module insert time and logged into the debug log, but are not available if the debug log has wrapped.