Hi Eric,
Am Mittwoch, den 12.04.2017, 12:12 -0700 schrieb Eric Anholt:
> If we follow the typical pattern of the base class being the first
> member, we can use the default dma_fence_free function.
Sorry, I don't like this change.
While it provides a bit of code simplification, it also bakes the
implicit assumption into the code that dma_fence is the first struct
member without any checks to validate this assumption. I would at least
expect a build bug assert, but then the current bit of code to keep this
explicit and self-documenting is probably just as good.
Regards,
Lucas
> Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
> Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Cc: Russell King <linux+etnaviv@xxxxxxxxxxxxxxx>
> Cc: Christian Gmeiner <christian.gmeiner@xxxxxxxxx>
> Cc: etnaviv@xxxxxxxxxxxxxxxxxxxxx
> ---
> drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 11 ++---------
> 1 file changed, 2 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> index da48819ff2e6..0d26ca56e94b 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
> @@ -998,8 +998,8 @@ static void hangcheck_disable(struct etnaviv_gpu *gpu)
>
> /* fence object management */
> struct etnaviv_fence {
> - struct etnaviv_gpu *gpu;
> struct dma_fence base;
> + struct etnaviv_gpu *gpu;
> };
>
> static inline struct etnaviv_fence *to_etnaviv_fence(struct dma_fence *fence)
> @@ -1031,20 +1031,13 @@ static bool etnaviv_fence_signaled(struct dma_fence *fence)
> return fence_completed(f->gpu, f->base.seqno);
> }
>
> -static void etnaviv_fence_release(struct dma_fence *fence)
> -{
> - struct etnaviv_fence *f = to_etnaviv_fence(fence);
> -
> - kfree_rcu(f, base.rcu);
> -}
> -
> static const struct dma_fence_ops etnaviv_fence_ops = {
> .get_driver_name = etnaviv_fence_get_driver_name,
> .get_timeline_name = etnaviv_fence_get_timeline_name,
> .enable_signaling = etnaviv_fence_enable_signaling,
> .signaled = etnaviv_fence_signaled,
> .wait = dma_fence_default_wait,
> - .release = etnaviv_fence_release,
> + .release = dma_fence_free,
> };
>
> static struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu)
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