[PATCH 3/3] drm/radeon: allow concurrent buffer reads

[Alex Deucher]

On Thu, Sep 4, 2014 at 2:01 PM, Christian König <deathsimple at vodafone.de> wrote:
> From: Christian König <christian.koenig at amd.com>
>
> Signed-off-by: Christian König <christian.koenig at amd.com>

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/radeon/radeon_cs.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
> index ec4840c..f662de4 100644
> --- a/drivers/gpu/drm/radeon/radeon_cs.c
> +++ b/drivers/gpu/drm/radeon/radeon_cs.c
> @@ -183,7 +183,7 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
>                 }
>
>                 p->relocs[i].tv.bo = &p->relocs[i].robj->tbo;
> -               p->relocs[i].tv.shared = false;
> +               p->relocs[i].tv.shared = !r->write_domain;
>                 p->relocs[i].handle = r->handle;
>
>                 radeon_cs_buckets_add(&buckets, &p->relocs[i].tv.head,
> @@ -260,7 +260,8 @@ static void radeon_cs_sync_rings(struct radeon_cs_parser *p)
>                         continue;
>
>                 resv = p->relocs[i].robj->tbo.resv;
> -               radeon_semaphore_sync_resv(p->ib.semaphore, resv, false);
> +               radeon_semaphore_sync_resv(p->ib.semaphore, resv,
> +                                          p->relocs[i].tv.shared);
>         }
>  }
>
> --
> 1.9.1
>
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