search for: shared_count

...((HZ / 100) < 1) ? 1 : HZ / 100); } -static int ttm_bo_unreserve_and_wait(struct ttm_buffer_object *bo, - bool interruptible) -{ - struct ttm_bo_global *glob = bo->glob; - struct reservation_object_list *fobj; - struct fence *excl = NULL; - struct fence **shared = NULL; - u32 shared_count = 0, i; - int ret = 0; - - fobj = reservation_object_get_list(bo->resv); - if (fobj && fobj->shared_count) { - shared = kmalloc(sizeof(*shared) * fobj->shared_count, - GFP_KERNEL); - - if (!shared) { - ret = -ENOMEM; - __ttm_bo_unreserve(bo); - spin_unlock(&glob-&gt...

...if (ret) return ret; - 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) + if (!fobj) return ret; for (i = 0; i < fobj->shared_count && !ret; ++i) { diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.h b/drivers/gpu/drm/nouveau/nouveau_fence.h index 1989ec22e66e..41abc8a44e3c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.h +++ b/drivers/gpu/drm/nouveau/nouveau_fence.h @@ -26,7 +26,7 @@ void nouveau_fence_unref(struc...

...if (ret) return ret; - 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) + if (!fobj) return ret; for (i = 0; i < fobj->shared_count && !ret; ++i) { diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.h b/drivers/gpu/drm/nouveau/nouveau_fence.h index 1989ec22e66e..41abc8a44e3c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.h +++ b/drivers/gpu/drm/nouveau/nouveau_fence.h @@ -26,7 +26,7 @@ void nouveau_fence_unref(struc...

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

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 ---

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

...dev->dev_private; struct qxl_bo *bo; + spin_lock(&qdev->release_lock); list_for_each_entry(bo, &qdev->gem.objects, list) { + struct reservation_object_list *fobj; + int rel; + + rcu_read_lock(); + fobj = rcu_dereference(bo->tbo.resv->fence); + rel = fobj ? fobj->shared_count : 0; + rcu_read_unlock(); + seq_printf(m, "size %ld, pc %d, sync obj %p, num releases %d\n", (unsigned long)bo->gem_base.size, bo->pin_count, - bo->tbo.sync_obj, bo->fence.num_active_releases); + bo->tbo.sync_obj, rel); } + spin_unlock(&qdev->r...

...xl_debugfs.c +++ b/drivers/gpu/drm/qxl/qxl_debugfs.c @@ -61,7 +61,7 @@ qxl_debugfs_buffers_info(struct seq_file *m, void *data) int rel; rcu_read_lock(); - fobj = rcu_dereference(bo->tbo.resv->fence); + fobj = rcu_dereference(bo->tbo.base.resv->fence); rel = fobj ? fobj->shared_count : 0; rcu_read_unlock(); diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c index 32126e8836b3..1b7be82c8e68 100644 --- a/drivers/gpu/drm/qxl/qxl_release.c +++ b/drivers/gpu/drm/qxl/qxl_release.c @@ -234,7 +234,7 @@ static int qxl_release_validate_bo(struct qxl_b...

...xl_debugfs.c +++ b/drivers/gpu/drm/qxl/qxl_debugfs.c @@ -61,7 +61,7 @@ qxl_debugfs_buffers_info(struct seq_file *m, void *data) int rel; rcu_read_lock(); - fobj = rcu_dereference(bo->tbo.resv->fence); + fobj = rcu_dereference(bo->tbo.base.resv->fence); rel = fobj ? fobj->shared_count : 0; rcu_read_unlock(); diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c index 32126e8836b3..1b7be82c8e68 100644 --- a/drivers/gpu/drm/qxl/qxl_release.c +++ b/drivers/gpu/drm/qxl/qxl_release.c @@ -234,7 +234,7 @@ static int qxl_release_validate_bo(struct qxl_b...

...xl_debugfs.c +++ b/drivers/gpu/drm/qxl/qxl_debugfs.c @@ -61,7 +61,7 @@ qxl_debugfs_buffers_info(struct seq_file *m, void *data) int rel; rcu_read_lock(); - fobj = rcu_dereference(bo->tbo.resv->fence); + fobj = rcu_dereference(bo->tbo.base.resv->fence); rel = fobj ? fobj->shared_count : 0; rcu_read_unlock(); diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c index 0022e31ba910..df55b83e0a55 100644 --- a/drivers/gpu/drm/qxl/qxl_release.c +++ b/drivers/gpu/drm/qxl/qxl_release.c @@ -238,7 +238,7 @@ static int qxl_release_validate_bo(struct qxl_b...

...xl_debugfs.c +++ b/drivers/gpu/drm/qxl/qxl_debugfs.c @@ -61,7 +61,7 @@ qxl_debugfs_buffers_info(struct seq_file *m, void *data) int rel; rcu_read_lock(); - fobj = rcu_dereference(bo->tbo.resv->fence); + fobj = rcu_dereference(bo->tbo.base.resv->fence); rel = fobj ? fobj->shared_count : 0; rcu_read_unlock(); diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c index 0022e31ba910..df55b83e0a55 100644 --- a/drivers/gpu/drm/qxl/qxl_release.c +++ b/drivers/gpu/drm/qxl/qxl_release.c @@ -238,7 +238,7 @@ static int qxl_release_validate_bo(struct qxl_b...

...xl_debugfs.c +++ b/drivers/gpu/drm/qxl/qxl_debugfs.c @@ -61,7 +61,7 @@ qxl_debugfs_buffers_info(struct seq_file *m, void *data) int rel; rcu_read_lock(); - fobj = rcu_dereference(bo->tbo.resv->fence); + fobj = rcu_dereference(bo->tbo.base.resv->fence); rel = fobj ? fobj->shared_count : 0; rcu_read_unlock(); diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c index 0022e31ba910..df55b83e0a55 100644 --- a/drivers/gpu/drm/qxl/qxl_release.c +++ b/drivers/gpu/drm/qxl/qxl_release.c @@ -238,7 +238,7 @@ static int qxl_release_validate_bo(struct qxl_b...

From: Thierry Reding <treding at nvidia.com> Hi, This series implements a new IOCTL to submit push buffers that can optionally return a sync FD or sync object to userspace. This is useful in cases where userspace wants to synchronize operations between the GPU and another driver (such as KMS for display). Among other things this allows extensions such as eglDupNativeFenceFDANDROID to be

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

...f, 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->shared[i], + reservation_object_held(resv)); + + /* should always be true, for now */ + if (!nouveau_local_fence(fence, chan->drm)) + ret = fence_wait(fence, true); + } + + return ret; } void nouveau_fence_unref(...