[LU-8980] Add tracepoint support to Lustre

• Type: Technical task
• Resolution: Unresolved
• Priority: Critical
• Fix Version/s: Lustre 2.11.0
• Affects Version/s: Lustre 2.10.0

Epic/Theme

upstream

• Assignee: James A Simmons
• Reporter: James A Simmons

Description

One of the major obstacles to the movement of the upstream client out of staging is our debug logging system. The libcfs debugging infrastructure was developed long before trace point existed.
Today trace point + perf can provide far more functionally than what is offered by lctl debug. This ticket covers the work need to implement this functionality.

Issue Links

• is related to: LU-8223 De-Noise LNet neterr logs so they can be ON by default
• is related to: LU-14428 Convert tracefile to use ring_buffer from linux
• is related to: LU-9679 Prepare lustre for adoption into the linux kernel
• is related to: LU-8145 start dump trace thread once CERROR
• is related to: LU-7801 Function level debug message filter