Perf events for GPU drivers - 2011.09
As perf supports system-wide events (soon), it would be really useful to have the kernel device drivers for GPUs generate perf events to improve profiling.
Blueprint information
- Status:
- Complete
- Approver:
- Jesse Barker
- Priority:
- Medium
- Drafter:
- Chunsang Jeong
- Direction:
- Needs approval
- Assignee:
- Chunsang Jeong
- Definition:
- Drafting
- Series goal:
- Accepted for 2011.11
- Implementation:
-
Implemented
- Milestone target:
-
2011.09
- Started by
- Jesse Barker
- Completed by
- Jesse Barker
Related branches
Related bugs
Sprints
Whiteboard
[ChunsangJeong Aug 30 2011]
Mali r2p2-03rel makes a log for every GP and PPs' timing information, which is saved as a "state_dump" file under /dev/mali with turuning on MALI_STATE_TRACKING on compiling. Defining PMU will be filtering and parsing the information as user defined, while reading the raw information would hook perf information at the first step.
(mali_kernel_
Headline: Hook performance events from GPU
Acceptance: User can get performance events from GPU (Mali) by reading dumped file with enabling STATE_TRACKING.
Work Items
Work items:
Investigate newly added profiling data structure in Mali kernel driver: DONE
Investigate needed interface on user space for profiling: DONE
Add PMU struct definition to Mali device driver to hook into perf: DONE
Investigate necessary modifications to perf user-space tool: DONE
Dependency tree
* Blueprints in grey have been implemented.
