| From: |
| Thomas Hellström <thomas.hellstrom-AT-linux.intel.com> |
| To: |
| intel-xe-AT-lists.freedesktop.org |
| Subject: |
| [PATCH 0/5] Add reclaim to the dmem cgroup controller |
| Date: |
| Fri, 27 Mar 2026 09:15:55 +0100 |
| Message-ID: |
| <20260327081600.4885-1-thomas.hellstrom@linux.intel.com> |
| Cc: |
| Thomas Hellström <thomas.hellstrom-AT-linux.intel.com>, Natalie Vock <natalie.vock-AT-gmx.de>, Johannes Weiner <hannes-AT-cmpxchg.org>, Tejun Heo <tj-AT-kernel.org>, Michal Koutný <mkoutny-AT-suse.com>, cgroups-AT-vger.kernel.org, Huang Rui <ray.huang-AT-amd.com>, Matthew Brost <matthew.brost-AT-intel.com>, Matthew Auld <matthew.auld-AT-intel.com>, Maarten Lankhorst <maarten.lankhorst-AT-linux.intel.com>, Maxime Ripard <mripard-AT-kernel.org>, Thomas Zimmermann <tzimmermann-AT-suse.de>, Simona Vetter <simona-AT-ffwll.ch>, David Airlie <airlied-AT-gmail.com>, Christian König <christian.koenig-AT-amd.com>, Alex Deucher <alexander.deucher-AT-amd.com>, Rodrigo Vivi <rodrigo.vivi-AT-intel.com>, dri-devel-AT-lists.freedesktop.org, amd-gfx-AT-lists.freedesktop.org, linux-kernel-AT-vger.kernel.org |
| Archive-link: |
| Article |
When writing a "max" limit lower than the current usage, the
existing code silently failed. This series aims to improve
on that by returning -EBUSY on failure and also attempt
to synchronously reclaim device memory to push the usage
under the new max limit to avoid the error.
Patch 1 implements error propagation.
Patch 2 implements and documents a reclaim callback interface
for the dmem controller.
Patch 3 implements a TTM reclaim callback.
Patch 4-5 hooks up the reclaim callback to the dmem cgroups-
aware drivers xe and amdgpu.
Thomas Hellström (5):
cgroup/dmem: Return error when setting max below current usage
cgroup/dmem: Add reclaim callback for lowering max below current usage
drm/ttm: Hook up a cgroup-aware reclaim callback for the dmem
controller
drm/xe: Wire up dmem cgroup reclaim for VRAM manager
drm/amdgpu: Wire up dmem cgroup reclaim for VRAM manager
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 10 +-
drivers/gpu/drm/ttm/ttm_bo.c | 95 ++++++++++++++++-
drivers/gpu/drm/ttm/ttm_bo_util.c | 3 +-
drivers/gpu/drm/ttm/ttm_resource.c | 36 +++++++
drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 19 ++--
include/drm/ttm/ttm_bo.h | 10 ++
include/drm/ttm/ttm_resource.h | 4 +
include/linux/cgroup_dmem.h | 11 ++
kernel/cgroup/dmem.c | 102 ++++++++++++++++---
10 files changed, 265 insertions(+), 27 deletions(-)
--
2.53.0
