LTGM
Reviewed-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
On 12/03/2014 03:46 PM, Christian König wrote:
> From: Christian König <christian.koenig@xxxxxxx>
>
> This patch adds an optional list_head parameter to ttm_eu_reserve_buffers.
> If specified duplicates in the execbuf list are no longer reported as errors,
> but moved to this list instead.
>
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
> ---
> drivers/gpu/drm/qxl/qxl_release.c | 3 ++-
> drivers/gpu/drm/radeon/radeon_gem.c | 2 +-
> drivers/gpu/drm/radeon/radeon_object.c | 2 +-
> drivers/gpu/drm/ttm/ttm_execbuf_util.c | 10 +++++++++-
> drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 6 ++++--
> drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 2 +-
> include/drm/ttm/ttm_execbuf_util.h | 9 ++++++++-
> 7 files changed, 26 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c
> index 446e71c..d9b2568 100644
> --- a/drivers/gpu/drm/qxl/qxl_release.c
> +++ b/drivers/gpu/drm/qxl/qxl_release.c
> @@ -264,7 +264,8 @@ int qxl_release_reserve_list(struct qxl_release *release, bool no_intr)
> if (list_is_singular(&release->bos))
> return 0;
>
> - ret = ttm_eu_reserve_buffers(&release->ticket, &release->bos, !no_intr);
> + ret = ttm_eu_reserve_buffers(&release->ticket, &release->bos,
> + !no_intr, NULL);
> if (ret)
> return ret;
>
> diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
> index 6162bd2..fe48f22 100644
> --- a/drivers/gpu/drm/radeon/radeon_gem.c
> +++ b/drivers/gpu/drm/radeon/radeon_gem.c
> @@ -564,7 +564,7 @@ static void radeon_gem_va_update_vm(struct radeon_device *rdev,
> if (!vm_bos)
> return;
>
> - r = ttm_eu_reserve_buffers(&ticket, &list, true);
> + r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
> if (r)
> goto error_free;
>
> diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
> index 4ab0747..a4a3ac8 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.c
> +++ b/drivers/gpu/drm/radeon/radeon_object.c
> @@ -508,7 +508,7 @@ int radeon_bo_list_validate(struct radeon_device *rdev,
> u64 bytes_moved = 0, initial_bytes_moved;
> u64 bytes_moved_threshold = radeon_bo_get_threshold_for_moves(rdev);
>
> - r = ttm_eu_reserve_buffers(ticket, head, true);
> + r = ttm_eu_reserve_buffers(ticket, head, true, NULL);
> if (unlikely(r != 0)) {
> return r;
> }
> diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
> index 8ce508e..3820ae9 100644
> --- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c
> +++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
> @@ -93,7 +93,8 @@ EXPORT_SYMBOL(ttm_eu_backoff_reservation);
> */
>
> int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
> - struct list_head *list, bool intr)
> + struct list_head *list, bool intr,
> + struct list_head *dups)
> {
> struct ttm_bo_global *glob;
> struct ttm_validate_buffer *entry;
> @@ -117,6 +118,13 @@ int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
> __ttm_bo_unreserve(bo);
>
> ret = -EBUSY;
> +
> + } else if (ret == -EALREADY && dups) {
> + struct ttm_validate_buffer *safe = entry;
> + entry = list_prev_entry(entry, head);
> + list_del(&safe->head);
> + list_add(&safe->head, dups);
> + continue;
> }
>
> if (!ret) {
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
> index 596cd6d..33176d0 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
> @@ -2487,7 +2487,8 @@ int vmw_execbuf_process(struct drm_file *file_priv,
> if (unlikely(ret != 0))
> goto out_err_nores;
>
> - ret = ttm_eu_reserve_buffers(&ticket, &sw_context->validate_nodes, true);
> + ret = ttm_eu_reserve_buffers(&ticket, &sw_context->validate_nodes,
> + true, NULL);
> if (unlikely(ret != 0))
> goto out_err;
>
> @@ -2677,7 +2678,8 @@ void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
> query_val.shared = false;
> list_add_tail(&query_val.head, &validate_list);
>
> - ret = ttm_eu_reserve_buffers(&ticket, &validate_list, false);
> + ret = ttm_eu_reserve_buffers(&ticket, &validate_list,
> + false, NULL);
> if (unlikely(ret != 0)) {
> vmw_execbuf_unpin_panic(dev_priv);
> goto out_no_reserve;
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> index 026de7c..210ef15 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
> @@ -1222,7 +1222,7 @@ vmw_resource_check_buffer(struct vmw_resource *res,
> val_buf->bo = ttm_bo_reference(&res->backup->base);
> val_buf->shared = false;
> list_add_tail(&val_buf->head, &val_list);
> - ret = ttm_eu_reserve_buffers(NULL, &val_list, interruptible);
> + ret = ttm_eu_reserve_buffers(NULL, &val_list, interruptible, NULL);
> if (unlikely(ret != 0))
> goto out_no_reserve;
>
> diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h
> index 4604417..b620c31 100644
> --- a/include/drm/ttm/ttm_execbuf_util.h
> +++ b/include/drm/ttm/ttm_execbuf_util.h
> @@ -68,6 +68,7 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
> * non-blocking reserves should be tried.
> * @list: thread private list of ttm_validate_buffer structs.
> * @intr: should the wait be interruptible
> + * @dups: [out] optional list of duplicates.
> *
> * Tries to reserve bos pointed to by the list entries for validation.
> * If the function returns 0, all buffers are marked as "unfenced",
> @@ -83,6 +84,11 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
> * calling process receives a signal while waiting. In that case, no
> * buffers on the list will be reserved upon return.
> *
> + * If dups is non NULL all buffers already reserved by the current thread
> + * (e.g. duplicates) are added to this list, otherwise -EALREADY is returned
> + * on the first already reserved buffer and all buffers from the list are
> + * unreserved again.
> + *
> * Buffers reserved by this function should be unreserved by
> * a call to either ttm_eu_backoff_reservation() or
> * ttm_eu_fence_buffer_objects() when command submission is complete or
> @@ -90,7 +96,8 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
> */
>
> extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
> - struct list_head *list, bool intr);
> + struct list_head *list, bool intr,
> + struct list_head *dups);
>
> /**
> * function ttm_eu_fence_buffer_objects.
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