Re: [PATCH] drm/radeon: sync all BOs involved in a CS

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On Wed, Nov 26, 2014 at 10:29 AM, Christian König
<deathsimple@xxxxxxxxxxx> wrote:
> From: Christian König <christian.koenig@xxxxxxx>
>
> Not just the userspace relocs, otherwise we won't wait
> for a swapped out page tables to be swapped in again.
>
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Pulled into my -next tree.  Unfortunately, this doesn't apply to
-fixes or stable as is.

Alex


> ---
>  drivers/gpu/drm/radeon/radeon_cs.c | 19 +++++++------------
>  1 file changed, 7 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
> index 75f22e5..f5e0a69 100644
> --- a/drivers/gpu/drm/radeon/radeon_cs.c
> +++ b/drivers/gpu/drm/radeon/radeon_cs.c
> @@ -251,22 +251,20 @@ static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority
>
>  static int radeon_cs_sync_rings(struct radeon_cs_parser *p)
>  {
> -       int i, r = 0;
> +       struct radeon_cs_reloc *reloc;
> +       int r;
>
> -       for (i = 0; i < p->nrelocs; i++) {
> +       list_for_each_entry(reloc, &p->validated, tv.head) {
>                 struct reservation_object *resv;
>
> -               if (!p->relocs[i].robj)
> -                       continue;
> -
> -               resv = p->relocs[i].robj->tbo.resv;
> +               resv = reloc->robj->tbo.resv;
>                 r = radeon_sync_resv(p->rdev, &p->ib.sync, resv,
> -                                    p->relocs[i].tv.shared);
> +                                    reloc->tv.shared);
>
>                 if (r)
> -                       break;
> +                       return r;
>         }
> -       return r;
> +       return 0;
>  }
>
>  /* XXX: note that this is called from the legacy UMS CS ioctl as well */
> @@ -505,9 +503,6 @@ static int radeon_bo_vm_update_pte(struct radeon_cs_parser *p,
>         if (r)
>                 return r;
>
> -       radeon_sync_resv(p->rdev, &p->ib.sync, vm->page_directory->tbo.resv,
> -                        true);
> -
>         r = radeon_vm_clear_freed(rdev, vm);
>         if (r)
>                 return r;
> --
> 1.9.1
>
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