search for: reservation_object_get_excl

...ccel_cleanup(bo, + &fence->base, evict, no_wait_gpu, new_mem); @@ -1151,8 +1152,9 @@ nouveau_bo_vm_cleanup(struct ttm_buffer_object *bo, { struct nouveau_drm *drm = nouveau_bdev(bo->bdev); struct drm_device *dev = drm->dev; + struct fence *fence = reservation_object_get_excl(bo->resv); - nv10_bo_put_tile_region(dev, *old_tile, bo->sync_obj); + nv10_bo_put_tile_region(dev, *old_tile, fence); *old_tile = new_tile; } @@ -1423,47 +1425,14 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) ttm_pool_unpopulate(ttm); } -static void -nouveau_bo_fence_unref(void...

...ccel_cleanup(bo, + &fence->base, evict, no_wait_gpu, new_mem); @@ -1151,8 +1152,9 @@ nouveau_bo_vm_cleanup(struct ttm_buffer_object *bo, { struct nouveau_drm *drm = nouveau_bdev(bo->bdev); struct drm_device *dev = drm->dev; + struct fence *fence = reservation_object_get_excl(bo->resv); - nv10_bo_put_tile_region(dev, *old_tile, bo->sync_obj); + nv10_bo_put_tile_region(dev, *old_tile, fence); *old_tile = new_tile; } @@ -1423,47 +1425,14 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) ttm_pool_unpopulate(ttm); } -static void -nouveau_bo_fence_unref(void...

...0e..89f8e76a2d7d 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c +++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c @@ -457,7 +457,7 @@ nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state) asyw->image.handle[0] = ctxdma->object.handle; } - asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.resv); + asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.base.resv); asyw->image.offset[0] = fb->nvbo->bo.offset; if (wndw->func->prepare) { diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c...

...0e..89f8e76a2d7d 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c +++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c @@ -457,7 +457,7 @@ nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state) asyw->image.handle[0] = ctxdma->object.handle; } - asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.resv); + asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.base.resv); asyw->image.offset[0] = fb->nvbo->bo.offset; if (wndw->func->prepare) { diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c...

...0e..89f8e76a2d7d 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c +++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c @@ -457,7 +457,7 @@ nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state) asyw->image.handle[0] = ctxdma->object.handle; } - asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.resv); + asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.base.resv); asyw->image.offset[0] = fb->nvbo->bo.offset; if (wndw->func->prepare) { diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c...

...0e..89f8e76a2d7d 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c +++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c @@ -457,7 +457,7 @@ nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state) asyw->image.handle[0] = ctxdma->object.handle; } - asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.resv); + asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.base.resv); asyw->image.offset[0] = fb->nvbo->bo.offset; if (wndw->func->prepare) { diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c...

...0e..89f8e76a2d7d 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c +++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c @@ -457,7 +457,7 @@ nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state) asyw->image.handle[0] = ctxdma->object.handle; } - asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.resv); + asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.base.resv); asyw->image.offset[0] = fb->nvbo->bo.offset; if (wndw->func->prepare) { diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c...

...return ret; - } - - for (i = 0; i < fobj->shared_count; ++i) { - if (!fence_is_signaled(fobj->shared[i])) { - fence_get(fobj->shared[i]); - shared[shared_count++] = fobj->shared[i]; - } - } - if (!shared_count) { - kfree(shared); - shared = NULL; - } - } - - excl = reservation_object_get_excl(bo->resv); - if (excl && !fence_is_signaled(excl)) - fence_get(excl); - else - excl = NULL; - - __ttm_bo_unreserve(bo); - spin_unlock(&glob->lru_lock); - - if (excl) { - ret = fence_wait(excl, interruptible); - fence_put(excl); - } - - if (shared_count > 0) { - for (i = 0;...

fence_is_signaled callback should support being run in atomic context, but not in irq context. Signed-off-by: Maarten Lankhorst <maarten.lankhorst at canonical.com> --- include/linux/fence.h | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/include/linux/fence.h b/include/linux/fence.h index d174585b874b..c1a4519ba2f5 100644 ---

From: Thierry Reding <treding at nvidia.com> This small series of patches implements support for waiting on and emitting fence FDs on kickoff. This enables explicit fencing and can be used for example to synchronize buffer accesses between the display engine and the GPU on Tegra. The first patch lays the groundwork by splitting up nouveau_fence_sync() to allow reuse. Patch 2 is where the

This series depends on the previously posted reservation api patches. 2 of them are not yet in for-next-fences branch of git://git.linaro.org/people/sumit.semwal/linux-3.x.git The missing patches are still in my vmwgfx_wip branch at git://people.freedesktop.org/~mlankhorst/linux All ttm drivers are converted to the fence api, fence_lock is removed and rcu is used in its place. qxl is the first

This series applies on top of the driver-core-next branch of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git Before converting ttm to the new fence interface I had to fix some drivers to require a reservation before poking with fence_obj. After flipping the switch RCU becomes available instead, and the extra reservations can be dropped again. :-) I've done at least basic

...t = nouveau_fence_wait(fence, true, false); + ret = nouveau_fence_wait(f, true, true); } } - return ret; -} + if (ret) + return ret; -static void -nouveau_fence_del(struct kref *kref) -{ - struct nouveau_fence *fence = container_of(kref, typeof(*fence), kref); - kfree(fence); + fence = reservation_object_get_excl(resv); + if (fence && !nouveau_local_fence(fence, chan->drm)) + ret = fence_wait(fence, true); + + fobj = reservation_object_get_list(resv); + if (!fobj || ret) + return ret; + + for (i = 0; i < fobj->shared_count && !ret; ++i) { + fence = rcu_dereference_protected(fobj-...

Hi guys, I'd like to start a new thread about explicit fence synchronization. This time with a Nouveau twist. :-) First, let me define what I understand by implicit/explicit sync: Implicit synchronization * Fences are attached to buffers * Kernel manages fences automatically based on buffer read/write access Explicit synchronization * Fences are passed around independently * Kernel takes