| From: |
| Dave Airlie <airlied-AT-gmail.com> |
| To: |
| dri-devel-AT-lists.freedesktop.org, linux-mm-AT-kvack.org, Johannes Weiner <hannes-AT-cmpxchg.org>, Christian Koenig <christian.koenig-AT-amd.com> |
| Subject: |
| drm/ttm/memcg/lru: enable memcg tracking for ttm and amdgpu driver (complete series v2) |
| Date: |
| Mon, 14 Jul 2025 15:18:15 +1000 |
| Message-ID: |
| <20250714052243.1149732-1-airlied@gmail.com> |
| Cc: |
| Dave Chinner <david-AT-fromorbit.com>, Kairui Song <kasong-AT-tencent.com> |
| Archive-link: |
| Article |
Hi all,
This is a repost with some fixes and cleanups.
Differences since last posting:
1. Added patch 18: add a module option to allow pooled pages to not be stored in the lru per-memcg
(Requested by Christian Konig)
2. Converged the naming and stats between vmstat and memcg (Suggested by Shakeel Butt)
3. Cleaned up the charge/uncharge code and some other bits.
Dave.
Original cover letter:
tl;dr: start using list_lru/numa/memcg in GPU driver core and amdgpu driver for now.
This is a complete series of patches, some of which have been sent before and reviewed,
but I want to get the complete picture for others, and try to figure out how best to land this.
There are 3 pieces to this:
01->02: add support for global gpu stat counters (previously posted, patch 2 is newer)
03->07: port ttm pools to list_lru for numa awareness
08->14: add memcg stats + gpu apis, then port ttm pools to memcg aware list_lru and shrinker
15->17: enable amdgpu to use new functionality.
The biggest difference in the memcg code from previously is I discovered what
obj cgroups were designed for and I'm reusing the page/objcg intergration that
already exists, to avoid reinventing that wheel right now.
There are some igt-gpu-tools tests I've written at:
https://gitlab.freedesktop.org/airlied/igt-gpu-tools/-/tr...
One problem is there are a lot of delayed action, that probably means the testing
needs a bit more robustness, but the tests validate all the basic paths.
Regards,
Dave.
