Gerd Hoffmann
2019-Jul-02 14:18 UTC
[PATCH v6 07/18] drm/virtio: add virtio_gpu_object_array & helpers
Some helper functions to manage an array of gem objects. v6: - add ticket to struct virtio_gpu_object_array. - add virtio_gpu_array_{lock,unlock}_resv helpers. - add virtio_gpu_array_add_fence helper. v5: some small optimizations (Chia-I Wu). v4: make them virtio-private instead of generic helpers. Signed-off-by: Gerd Hoffmann <kraxel at redhat.com> --- drivers/gpu/drm/virtio/virtgpu_drv.h | 17 ++++++ drivers/gpu/drm/virtio/virtgpu_gem.c | 83 ++++++++++++++++++++++++++++ 2 files changed, 100 insertions(+) diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index 07f6001ea91e..abb078a5dedf 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -84,6 +84,12 @@ struct virtio_gpu_object { #define gem_to_virtio_gpu_obj(gobj) \ container_of((gobj), struct virtio_gpu_object, gem_base) +struct virtio_gpu_object_array { + struct ww_acquire_ctx ticket; + u32 nents, total; + struct drm_gem_object *objs[]; +}; + struct virtio_gpu_vbuffer; struct virtio_gpu_device; @@ -251,6 +257,17 @@ int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv, struct drm_device *dev, uint32_t handle, uint64_t *offset_p); +struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents); +struct virtio_gpu_object_array* +virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents); +void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs, + struct drm_gem_object *obj); +int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs); +void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs); +void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs, + struct dma_fence *fence); +void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs); + /* virtio vg */ int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c index 9c9ad3b14080..e88df5e06d06 100644 --- a/drivers/gpu/drm/virtio/virtgpu_gem.c +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c @@ -169,3 +169,86 @@ void virtio_gpu_gem_object_close(struct drm_gem_object *obj, qobj->hw_res_handle); virtio_gpu_object_unreserve(qobj); } + +struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents) +{ + struct virtio_gpu_object_array *objs; + size_t size = sizeof(*objs) + sizeof(objs->objs[0]) * nents; + + objs = kmalloc(size, GFP_KERNEL); + if (!objs) + return NULL; + + objs->nents = 0; + objs->total = nents; + return objs; +} + +static void virtio_gpu_array_free(struct virtio_gpu_object_array *objs) +{ + kfree(objs); +} + +struct virtio_gpu_object_array* +virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents) +{ + struct virtio_gpu_object_array *objs; + u32 i; + + objs = virtio_gpu_array_alloc(nents); + if (!objs) + return NULL; + + for (i = 0; i < nents; i++) { + objs->nents = i; + objs->objs[i] = drm_gem_object_lookup(drm_file, handles[i]); + if (!objs->objs[i]) { + virtio_gpu_array_put_free(objs); + return NULL; + } + } + objs->nents = i; + return objs; +} + +void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs, + struct drm_gem_object *obj) +{ + if (WARN_ON_ONCE(objs->nents == objs->total)) + return; + + drm_gem_object_get(obj); + objs->objs[objs->nents] = obj; + objs->nents++; +} + +int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs) +{ + return drm_gem_lock_reservations(objs->objs, objs->nents, + &objs->ticket); +} + +void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs) +{ + drm_gem_unlock_reservations(objs->objs, objs->nents, + &objs->ticket); +} + +void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs, + struct dma_fence *fence) +{ + int i; + + for (i = 0; i < objs->nents; i++) + reservation_object_add_excl_fence(objs->objs[i]->resv, + fence); +} + +void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs) +{ + u32 i; + + for (i = 0; i < objs->nents; i++) + drm_gem_object_put_unlocked(objs->objs[i]); + virtio_gpu_array_free(objs); +} -- 2.18.1
Chia-I Wu
2019-Jul-03 18:31 UTC
[PATCH v6 07/18] drm/virtio: add virtio_gpu_object_array & helpers
On Tue, Jul 2, 2019 at 7:19 AM Gerd Hoffmann <kraxel at redhat.com> wrote:> > Some helper functions to manage an array of gem objects. > > v6: > - add ticket to struct virtio_gpu_object_array. > - add virtio_gpu_array_{lock,unlock}_resv helpers. > - add virtio_gpu_array_add_fence helper. > v5: some small optimizations (Chia-I Wu). > v4: make them virtio-private instead of generic helpers. > > Signed-off-by: Gerd Hoffmann <kraxel at redhat.com> > --- > drivers/gpu/drm/virtio/virtgpu_drv.h | 17 ++++++ > drivers/gpu/drm/virtio/virtgpu_gem.c | 83 ++++++++++++++++++++++++++++ > 2 files changed, 100 insertions(+) > > diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h > index 07f6001ea91e..abb078a5dedf 100644 > --- a/drivers/gpu/drm/virtio/virtgpu_drv.h > +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h > @@ -84,6 +84,12 @@ struct virtio_gpu_object { > #define gem_to_virtio_gpu_obj(gobj) \ > container_of((gobj), struct virtio_gpu_object, gem_base) > > +struct virtio_gpu_object_array { > + struct ww_acquire_ctx ticket; > + u32 nents, total; > + struct drm_gem_object *objs[]; > +}; > + > struct virtio_gpu_vbuffer; > struct virtio_gpu_device; > > @@ -251,6 +257,17 @@ int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv, > struct drm_device *dev, > uint32_t handle, uint64_t *offset_p); > > +struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents); > +struct virtio_gpu_object_array* > +virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents); > +void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs, > + struct drm_gem_object *obj); > +int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs); > +void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs); > +void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs, > + struct dma_fence *fence); > +void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs); > + > /* virtio vg */ > int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); > void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); > diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c > index 9c9ad3b14080..e88df5e06d06 100644 > --- a/drivers/gpu/drm/virtio/virtgpu_gem.c > +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c > @@ -169,3 +169,86 @@ void virtio_gpu_gem_object_close(struct drm_gem_object *obj, > qobj->hw_res_handle); > virtio_gpu_object_unreserve(qobj); > } > + > +struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents) > +{ > + struct virtio_gpu_object_array *objs; > + size_t size = sizeof(*objs) + sizeof(objs->objs[0]) * nents; > + > + objs = kmalloc(size, GFP_KERNEL); > + if (!objs) > + return NULL; > + > + objs->nents = 0; > + objs->total = nents; > + return objs; > +} > + > +static void virtio_gpu_array_free(struct virtio_gpu_object_array *objs) > +{ > + kfree(objs); > +} > + > +struct virtio_gpu_object_array* > +virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents) > +{ > + struct virtio_gpu_object_array *objs; > + u32 i; > + > + objs = virtio_gpu_array_alloc(nents); > + if (!objs) > + return NULL; > + > + for (i = 0; i < nents; i++) { > + objs->nents = i;This line can be moved into the if-block just below.> + objs->objs[i] = drm_gem_object_lookup(drm_file, handles[i]); > + if (!objs->objs[i]) { > + virtio_gpu_array_put_free(objs); > + return NULL; > + } > + } > + objs->nents = i; > + return objs; > +} > + > +void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs, > + struct drm_gem_object *obj) > +{ > + if (WARN_ON_ONCE(objs->nents == objs->total)) > + return; > + > + drm_gem_object_get(obj); > + objs->objs[objs->nents] = obj; > + objs->nents++; > +} > + > +int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs) > +{ > + return drm_gem_lock_reservations(objs->objs, objs->nents, > + &objs->ticket); > +} > + > +void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs) > +{ > + drm_gem_unlock_reservations(objs->objs, objs->nents, > + &objs->ticket); > +} > + > +void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs, > + struct dma_fence *fence) > +{ > + int i; > + > + for (i = 0; i < objs->nents; i++) > + reservation_object_add_excl_fence(objs->objs[i]->resv, > + fence); > +} > + > +void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs) > +{ > + u32 i; > + > + for (i = 0; i < objs->nents; i++) > + drm_gem_object_put_unlocked(objs->objs[i]); > + virtio_gpu_array_free(objs); > +} > -- > 2.18.1 >
Chia-I Wu
2019-Jul-03 19:52 UTC
[PATCH v6 07/18] drm/virtio: add virtio_gpu_object_array & helpers
On Wed, Jul 3, 2019 at 11:31 AM Chia-I Wu <olvaffe at gmail.com> wrote:> > On Tue, Jul 2, 2019 at 7:19 AM Gerd Hoffmann <kraxel at redhat.com> wrote: > > > > Some helper functions to manage an array of gem objects. > > > > v6: > > - add ticket to struct virtio_gpu_object_array. > > - add virtio_gpu_array_{lock,unlock}_resv helpers. > > - add virtio_gpu_array_add_fence helper. > > v5: some small optimizations (Chia-I Wu). > > v4: make them virtio-private instead of generic helpers. > > > > Signed-off-by: Gerd Hoffmann <kraxel at redhat.com> > > --- > > drivers/gpu/drm/virtio/virtgpu_drv.h | 17 ++++++ > > drivers/gpu/drm/virtio/virtgpu_gem.c | 83 ++++++++++++++++++++++++++++ > > 2 files changed, 100 insertions(+) > > > > diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h > > index 07f6001ea91e..abb078a5dedf 100644 > > --- a/drivers/gpu/drm/virtio/virtgpu_drv.h > > +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h > > @@ -84,6 +84,12 @@ struct virtio_gpu_object { > > #define gem_to_virtio_gpu_obj(gobj) \ > > container_of((gobj), struct virtio_gpu_object, gem_base) > > > > +struct virtio_gpu_object_array { > > + struct ww_acquire_ctx ticket; > > + u32 nents, total; > > + struct drm_gem_object *objs[]; > > +}; > > + > > struct virtio_gpu_vbuffer; > > struct virtio_gpu_device; > > > > @@ -251,6 +257,17 @@ int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv, > > struct drm_device *dev, > > uint32_t handle, uint64_t *offset_p); > > > > +struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents); > > +struct virtio_gpu_object_array* > > +virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents); > > +void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs, > > + struct drm_gem_object *obj); > > +int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs); > > +void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs); > > +void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs, > > + struct dma_fence *fence); > > +void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs); > > + > > /* virtio vg */ > > int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); > > void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); > > diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c > > index 9c9ad3b14080..e88df5e06d06 100644 > > --- a/drivers/gpu/drm/virtio/virtgpu_gem.c > > +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c > > @@ -169,3 +169,86 @@ void virtio_gpu_gem_object_close(struct drm_gem_object *obj, > > qobj->hw_res_handle); > > virtio_gpu_object_unreserve(qobj); > > } > > + > > +struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents) > > +{ > > + struct virtio_gpu_object_array *objs; > > + size_t size = sizeof(*objs) + sizeof(objs->objs[0]) * nents; > > + > > + objs = kmalloc(size, GFP_KERNEL); > > + if (!objs) > > + return NULL; > > + > > + objs->nents = 0; > > + objs->total = nents; > > + return objs; > > +} > > + > > +static void virtio_gpu_array_free(struct virtio_gpu_object_array *objs) > > +{ > > + kfree(objs); > > +} > > + > > +struct virtio_gpu_object_array* > > +virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents) > > +{ > > + struct virtio_gpu_object_array *objs; > > + u32 i; > > + > > + objs = virtio_gpu_array_alloc(nents); > > + if (!objs) > > + return NULL; > > + > > + for (i = 0; i < nents; i++) { > > + objs->nents = i; > This line can be moved into the if-block just below. > > + objs->objs[i] = drm_gem_object_lookup(drm_file, handles[i]); > > + if (!objs->objs[i]) { > > + virtio_gpu_array_put_free(objs); > > + return NULL; > > + } > > + } > > + objs->nents = i; > > + return objs; > > +} > > + > > +void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs, > > + struct drm_gem_object *obj) > > +{ > > + if (WARN_ON_ONCE(objs->nents == objs->total)) > > + return; > > + > > + drm_gem_object_get(obj); > > + objs->objs[objs->nents] = obj; > > + objs->nents++; > > +} > > + > > +int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs) > > +{ > > + return drm_gem_lock_reservations(objs->objs, objs->nents, > > + &objs->ticket);Unlike in other drivers where an "object array" is only needed in execbuffer, we will use this in several places, and often with only 1 object in the array. Can we special case that and do a quick reservation_object_lock?> > +} > > + > > +void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs) > > +{ > > + drm_gem_unlock_reservations(objs->objs, objs->nents, > > + &objs->ticket); > > +} > > + > > +void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs, > > + struct dma_fence *fence) > > +{ > > + int i; > > + > > + for (i = 0; i < objs->nents; i++) > > + reservation_object_add_excl_fence(objs->objs[i]->resv, > > + fence); > > +} > > + > > +void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs) > > +{ > > + u32 i; > > + > > + for (i = 0; i < objs->nents; i++) > > + drm_gem_object_put_unlocked(objs->objs[i]); > > + virtio_gpu_array_free(objs); > > +} > > -- > > 2.18.1 > >
Gerd Hoffmann
2019-Jul-04 11:11 UTC
[PATCH v6 07/18] drm/virtio: add virtio_gpu_object_array & helpers
> > + for (i = 0; i < nents; i++) { > > + objs->nents = i; > This line can be moved into the if-block just below. > > + objs->objs[i] = drm_gem_object_lookup(drm_file, handles[i]); > > + if (!objs->objs[i]) { > > + virtio_gpu_array_put_free(objs); > > + return NULL; > > + }Done. cheers, Gerd
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