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Diffstat (limited to 'drivers/gpu/drm/i915/TODO.txt')
| -rw-r--r-- | drivers/gpu/drm/i915/TODO.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/TODO.txt b/drivers/gpu/drm/i915/TODO.txt new file mode 100644 index 000000000..879b08ca3 --- /dev/null +++ b/drivers/gpu/drm/i915/TODO.txt @@ -0,0 +1,41 @@ +gem/gt TODO items +----------------- + +- For discrete memory manager, merge enough dg1 to be able to refactor it to + TTM. Then land pci ids (just in case that turns up an uapi problem). TTM has + improved a lot the past 2 years, there's no reason anymore not to use it. + +- Come up with a plan what to do with drm/scheduler and how to get there. + +- Roll out dma_fence critical section annotations. + +- There's a lot of complexity added past few years to make relocations faster. + That doesn't make sense given hw and gpu apis moved away from this model years + ago: + 1. Land a modern pre-bound uapi like VM_BIND + 2. Any complexity added in this area past few years which can't be justified + with VM_BIND using userspace should be removed. Looking at amdgpu dma_resv on + the bo and vm, plus some lru locks is all that needed. No complex rcu, + refcounts, caching, ... on everything. + This is the matching task on the vm side compared to ttm/dma_resv on the + backing storage side. + +- i915_sw_fence seems to be the main structure for the i915-gem dma_fence model. + How-to-dma_fence is core and drivers really shouldn't build their own world + here, treating everything else as a fixed platform. i915_sw_fence concepts + should be moved to dma_fence, drm/scheduler or atomic commit helpers. Or + removed if dri-devel consensus is that it's not a good idea. Once that's done + maybe even remove it if there's nothing left. + +Smaller things: +- i915_utils.h needs to be moved to the right places. + +- dma_fence_work should be in drivers/dma-buf + +- i915_mm.c should be moved to the right places. Some of the helpers also look a + bit fishy: + + https://lore.kernel.org/linux-mm/20210301083320.943079-1-hch@lst.de/ + +- tasklet helpers in i915_tasklet.h also look a bit misplaced and should + probably be moved to tasklet headers. |