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TODOs
=====
WIP
---
Aiming next merge window
------------------------
- Self feedback based DAMOS tuning
- DAMON debugfs deprecation: make it more noticeable
- Selftests: Test quota
- Upload daily perf results to the website
Planning / Considering
----------------------
- Access/Contiguity-aware Memory Auto-scaling
- https://lore.kernel.org/damon/20231112195114.61474-1-sj@kernel.org/
- Make 'age' counted by sample_interval rather than aggregation interval
- CPU time quota for DAMON monitirng
- monitoring part CPU usage statistics
- onetime callback
- manually setting callback function pointers looks dangeraous. Provide more
decent interface, like register/unregister_damon_callback, and one time
callback like call_rcu()
- Setting resolution of damos tried_regions
- Should be able to control the directories population overhead when the
number of regions is big
- More DAMON modules
- DAMON_WSS: Yet another DAMON module for WSS monitoring with ro/wo/rw
- DAMON-based THP hinting module
- DAMON debugfs deprecation: make it stop working
- DAMON debugfs deprecation: remove code
- rename nr_accesses/moving_accesses_bp
- mark nr_accesses as private
- use a dedicated struct for access rate
- let kdamond name be user-defined
- let DAMON modules share one kdamond
- unify DAMON modules
- write-only monitoring
- There is a patch doing the work already:
https://lore.kernel.org/lkml/20220203131237.298090-1-pedrodemargomes@gmail.com/
Need to wait until soft-dirty bugs are fixed, though.
- support multiple contexts per kdamond
- DAMON-based VMA split/merge
- Help big VMA contention issue?
- We can further expose the monitoring results via vma name
- Reading results becomes very easy
- Contig memory access util monitoring
- WSS/RSS based processes sorting
- LRU-based monitoring ops
- rename damon_sysfs_scheme to damos_sysfs
- automatic paddr regions detection
(handle hot(un)plugged memory regions)
- Fixed granularity idleness monitoring
- Must be useful for further DAMON overhead/accuracy evaluation
- Improve regions-based monitoring quality
- Support cgroups
- Support tlb flushing
- https://lore.kernel.org/all/a2fb10bd-b44a-350e-f693-82ecfa6f54a8@huawei.com/
- Add __counted_by() annotation when ready
(https://lore.kernel.org/r/CAKwvOdkvGTGiWzqEFq=kzqvxSYP5vUj3g9Z-=MZSQROzzSa_dg@mail.gmail.com)
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