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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-03 23:00:59 +0200 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-04 14:43:13 +0200 |
| commit | 4ee92c7149da9cb1991684628a9e47166a5e26f6 (patch) | |
| tree | fb2ef8434e43ceaeaa4f6f9cda0cd31b5044b1c2 /drivers/gpu/drm/drm_mm.c | |
| parent | drm/mm: Use helpers for drm_mm_node booleans (diff) | |
| download | linux-4ee92c7149da9cb1991684628a9e47166a5e26f6.tar.xz linux-4ee92c7149da9cb1991684628a9e47166a5e26f6.zip | |
drm/mm: Convert drm_mm_node booleans to bitops
A straightforward conversion of assignment and checking of the boolean
state flags (allocated, scanned) into non-atomic bitops. The caller
remains responsible for all locking around the drm_mm and its nodes.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191003210100.22250-4-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/drm_mm.c')
| -rw-r--r-- | drivers/gpu/drm/drm_mm.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index 99312bdc6273..a9cab5e53731 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -426,7 +426,7 @@ int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node) list_add(&node->node_list, &hole->node_list); drm_mm_interval_tree_add_node(hole, node); - node->allocated = true; + __set_bit(DRM_MM_NODE_ALLOCATED_BIT, &node->flags); node->hole_size = 0; rm_hole(hole); @@ -545,7 +545,7 @@ int drm_mm_insert_node_in_range(struct drm_mm * const mm, list_add(&node->node_list, &hole->node_list); drm_mm_interval_tree_add_node(hole, node); - node->allocated = true; + __set_bit(DRM_MM_NODE_ALLOCATED_BIT, &node->flags); rm_hole(hole); if (adj_start > hole_start) @@ -563,7 +563,7 @@ EXPORT_SYMBOL(drm_mm_insert_node_in_range); static inline bool drm_mm_node_scanned_block(const struct drm_mm_node *node) { - return node->scanned_block; + return test_bit(DRM_MM_NODE_SCANNED_BIT, &node->flags); } /** @@ -589,7 +589,7 @@ void drm_mm_remove_node(struct drm_mm_node *node) drm_mm_interval_tree_remove(node, &mm->interval_tree); list_del(&node->node_list); - node->allocated = false; + __clear_bit(DRM_MM_NODE_ALLOCATED_BIT, &node->flags); if (drm_mm_hole_follows(prev_node)) rm_hole(prev_node); @@ -627,8 +627,8 @@ void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new) &mm->holes_addr); } - old->allocated = false; - new->allocated = true; + __clear_bit(DRM_MM_NODE_ALLOCATED_BIT, &old->flags); + __set_bit(DRM_MM_NODE_ALLOCATED_BIT, &new->flags); } EXPORT_SYMBOL(drm_mm_replace_node); @@ -738,7 +738,7 @@ bool drm_mm_scan_add_block(struct drm_mm_scan *scan, DRM_MM_BUG_ON(node->mm != mm); DRM_MM_BUG_ON(!drm_mm_node_allocated(node)); DRM_MM_BUG_ON(drm_mm_node_scanned_block(node)); - node->scanned_block = true; + __set_bit(DRM_MM_NODE_SCANNED_BIT, &node->flags); mm->scan_active++; /* Remove this block from the node_list so that we enlarge the hole @@ -824,7 +824,7 @@ bool drm_mm_scan_remove_block(struct drm_mm_scan *scan, DRM_MM_BUG_ON(node->mm != scan->mm); DRM_MM_BUG_ON(!drm_mm_node_scanned_block(node)); - node->scanned_block = false; + __clear_bit(DRM_MM_NODE_SCANNED_BIT, &node->flags); DRM_MM_BUG_ON(!node->mm->scan_active); node->mm->scan_active--; @@ -922,7 +922,7 @@ void drm_mm_init(struct drm_mm *mm, u64 start, u64 size) /* Clever trick to avoid a special case in the free hole tracking. */ INIT_LIST_HEAD(&mm->head_node.node_list); - mm->head_node.allocated = false; + mm->head_node.flags = 0; mm->head_node.mm = mm; mm->head_node.start = start + size; mm->head_node.size = -size; |