Op 23-11-15 om 12:34 schreef john.c.harri...@intel.com:
> From: Maarten Lankhorst <maarten.lankho...@canonical.com>
>
> This allows users of dma fences to create a android fence.
>
> v2: Added kerneldoc. (Tvrtko Ursulin).
>
> Signed-off-by: Maarten Lankhorst <maarten.lankho...@canonical.com>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
> Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
> Cc: Daniel Vetter <dan...@ffwll.ch>
> Cc: Jesse Barnes <jbar...@virtuousgeek.org>
> Cc: de...@driverdev.osuosl.org
> Cc: Riley Andrews <riandr...@android.com>
> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
> Cc: Arve Hjønnevåg <a...@android.com>
> ---
> drivers/staging/android/sync.c | 13 +++++++++----
> drivers/staging/android/sync.h | 12 +++++++++++-
> 2 files changed, 20 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c
> index f83e00c..7f0e919 100644
> --- a/drivers/staging/android/sync.c
> +++ b/drivers/staging/android/sync.c
> @@ -188,7 +188,7 @@ static void fence_check_cb_func(struct fence *f, struct
> fence_cb *cb)
> }
>
> /* TODO: implement a create which takes more that one sync_pt */
> -struct sync_fence *sync_fence_create(const char *name, struct sync_pt *pt)
> +struct sync_fence *sync_fence_create_dma(const char *name, struct fence *pt)
> {
> struct sync_fence *fence;
>
> @@ -199,16 +199,21 @@ struct sync_fence *sync_fence_create(const char *name,
> struct sync_pt *pt)
> fence->num_fences = 1;
> atomic_set(&fence->status, 1);
>
> - fence->cbs[0].sync_pt = &pt->base;
> + fence->cbs[0].sync_pt = pt;
> fence->cbs[0].fence = fence;
> - if (fence_add_callback(&pt->base, &fence->cbs[0].cb,
> - fence_check_cb_func))
> + if (fence_add_callback(pt, &fence->cbs[0].cb, fence_check_cb_func))
> atomic_dec(&fence->status);
>
> sync_fence_debug_add(fence);
>
> return fence;
> }
> +EXPORT_SYMBOL(sync_fence_create_dma);
> +
> +struct sync_fence *sync_fence_create(const char *name, struct sync_pt *pt)
> +{
> + return sync_fence_create_dma(name, &pt->base);
> +}
> EXPORT_SYMBOL(sync_fence_create);
>
> struct sync_fence *sync_fence_fdget(int fd)
> diff --git a/drivers/staging/android/sync.h b/drivers/staging/android/sync.h
> index 61f8a3a..798cd56 100644
> --- a/drivers/staging/android/sync.h
> +++ b/drivers/staging/android/sync.h
> @@ -250,10 +250,20 @@ void sync_pt_free(struct sync_pt *pt);
> * @pt: sync_pt to add to the fence
> *
> * Creates a fence containg @pt. Once this is called, the fence takes
> - * ownership of @pt.
> + * a reference on @pt.
> */
> struct sync_fence *sync_fence_create(const char *name, struct sync_pt *pt);
No it doesn't.
> +/**
> + * sync_fence_create_dma() - creates a sync fence from dma-fence
> + * @name: name of fence to create
> + * @pt: dma-fence to add to the fence
> + *
> + * Creates a fence containg @pt. Once this is called, the fence takes
> + * a reference on @pt.
> + */
No it doesn't.
> +struct sync_fence *sync_fence_create_dma(const char *name, struct fence *pt);
> +
> /*
> * API for sync_fence consumers
> */
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