Messages in this thread Patch in this message | | | From | Maarten Lankhorst <> | Subject | [RFC PATCH 3/4] drm/ttm: Handle -EAGAIN in ttm_resource_alloc as -ENOSPC. | Date | Wed, 3 May 2023 10:34:59 +0200 |
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This allows the drm cgroup controller to return no space is available..
XXX: This is a hopeless simplification that changes behavior, and returns -ENOSPC even if we could evict ourselves from the current cgroup.
Ideally, the eviction code becomes cgroup aware, and will force eviction from the current cgroup or its parents.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> --- drivers/gpu/drm/ttm/ttm_bo.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index bd5dae4d1624..e057d5d8f09a 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -731,6 +731,8 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, ret = ttm_resource_alloc(bo, place, mem); if (likely(!ret)) break; + if (ret == -EAGAIN) + return -ENOSPC; if (unlikely(ret != -ENOSPC)) return ret; ret = ttm_mem_evict_first(bdev, man, place, ctx, @@ -783,7 +785,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, type_found = true; ret = ttm_resource_alloc(bo, place, mem); - if (ret == -ENOSPC) + if (ret == -ENOSPC || ret == -EAGAIN) continue; if (unlikely(ret)) goto error; -- 2.34.1
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