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drm/ttm: optionally move duplicates to a separate list

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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.

Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2014-12-03 15:46:48 +01:00 committed by Alex Deucher
parent 5e5c21cac1
commit aa35071c59
7 changed files with 26 additions and 8 deletions
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3
drivers/gpu/drm/qxl/qxl_release.c
View File

@ -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;

2
drivers/gpu/drm/radeon/radeon_gem.c
View File

@ -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;

2
drivers/gpu/drm/radeon/radeon_object.c
View File

@ -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;
}

10
drivers/gpu/drm/ttm/ttm_execbuf_util.c
View File

@ -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) {

6
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
View File

@ -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;

2
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
View File

@ -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;

9
include/drm/ttm/ttm_execbuf_util.h
View File

@ -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.