From: Christian König <christian.koe...@amd.com>
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 at amd.com>
---
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.
--
1.9.1
