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dma-fence: Use a flag for 64-bit seqnos

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With the goal of reducing the need for drivers to touch (and dereference)
fence->ops, we move the 64-bit seqnos flag from struct dma_fence_ops to
the fence->flags.

Drivers which were setting this flag are changed to use new
dma_fence_init64() instead of dma_fence_init().

v2:
 * Streamlined init and added kerneldoc.
 * Rebase for amdgpu userq which landed since.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Christian König <christian.koenig@amd.com> # v1
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
Link: https://lore.kernel.org/r/20250515095004.28318-3-tvrtko.ursulin@igalia.com
This commit is contained in:
Tvrtko Ursulin
2025-05-15 10:49:57 +01:00
committed by Tvrtko Ursulin
parent 22b929b252
commit bf33a0003d
6 changed files with 58 additions and 35 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_eviction_fence.c
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@@ -134,7 +134,6 @@ static bool amdgpu_eviction_fence_enable_signaling(struct dma_fence *f)
}
static const struct dma_fence_ops amdgpu_eviction_fence_ops = {
.use_64bit_seqno = true,
.get_driver_name = amdgpu_eviction_fence_get_driver_name,
.get_timeline_name = amdgpu_eviction_fence_get_timeline_name,
.enable_signaling = amdgpu_eviction_fence_enable_signaling,
@@ -160,9 +159,9 @@ amdgpu_eviction_fence_create(struct amdgpu_eviction_fence_mgr *evf_mgr)
ev_fence->evf_mgr = evf_mgr;
get_task_comm(ev_fence->timeline_name, current);
spin_lock_init(&ev_fence->lock);
dma_fence_init(&ev_fence->base, &amdgpu_eviction_fence_ops,
&ev_fence->lock, evf_mgr->ev_fence_ctx,
atomic_inc_return(&evf_mgr->ev_fence_seq));
dma_fence_init64(&ev_fence->base, &amdgpu_eviction_fence_ops,
&ev_fence->lock, evf_mgr->ev_fence_ctx,
atomic_inc_return(&evf_mgr->ev_fence_seq));
return ev_fence;
}