Hi all,
On Wed, 16 Nov 2022 10:47:52 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Today's linux-next merge of the drm-misc tree got a conflict in:
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
>
> between commit:
>
> eca13f3c67b6 ("drm/amdgpu: use the last IB as gang leader v2")
>
> from the drm-misc-fixes tree and commit:
>
> 1728baa7e4e6 ("drm/amdgpu: use scheduler dependencies for CS")
>
> from the drm-misc tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging. You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
>
> --
> Cheers,
> Stephen Rothwell
>
> diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> index de5cb056c9ad,0528c2b1db6e..000000000000
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> @@@ -1197,10 -1201,7 +1203,10 @@@ static int amdgpu_cs_sync_rings(struct
> }
>
> for (i = 0; i < p->gang_size; ++i) {
> + if (p->jobs[i] == leader)
> + continue;
> +
> - r = amdgpu_sync_clone(&leader->sync, &p->jobs[i]->sync);
> + r = amdgpu_sync_push_to_job(&p->sync, p->jobs[i]);
> if (r)
> return r;
> }
> @@@ -1241,14 -1243,11 +1247,14 @@@ static int amdgpu_cs_submit(struct amdg
> for (i = 0; i < p->gang_size; ++i)
> drm_sched_job_arm(&p->jobs[i]->base);
>
> - for (i = 0; i < (p->gang_size - 1); ++i) {
> + for (i = 0; i < p->gang_size; ++i) {
> struct dma_fence *fence;
>
> + if (p->jobs[i] == leader)
> + continue;
> +
> fence = &p->jobs[i]->base.s_fence->scheduled;
> - r = amdgpu_sync_fence(&leader->sync, fence);
> + r = drm_sched_job_add_dependency(&leader->base, fence);
> if (r)
> goto error_cleanup;
> }
Note that I had to keep the declaration of "leader" in amdgpu_cs_sync_rings().
--
Cheers,
Stephen Rothwell
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