Doing the check is trivial (low cost in comparison to overall eviction) and helps simplify the code.
Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen joonas.lahtinen@linux.intel.com --- drivers/gpu/drm/drm_mm.c | 53 +++-------------------------------- drivers/gpu/drm/i915/i915_gem_evict.c | 10 ++----- include/drm/drm_mm.h | 33 ++++++++++++++++++---- 3 files changed, 34 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index 459f10ca5714..c68f79149b9a 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -710,46 +710,6 @@ EXPORT_SYMBOL(drm_mm_replace_node); */
/** - * drm_mm_scan_init - initialize lru scanning - * @scan: scan state - * @mm: drm_mm to scan - * @size: size of the allocation - * @alignment: alignment of the allocation - * @color: opaque tag value to use for the allocation - * - * This simply sets up the scanning routines with the parameters for the desired - * hole. Note that there's no need to specify allocation flags, since they only - * change the place a node is allocated from within a suitable hole. - * - * Warning: - * As long as the scan list is non-empty, no other operations than - * adding/removing nodes to/from the scan list are allowed. - */ -void drm_mm_scan_init(struct drm_mm_scan *scan, - struct drm_mm *mm, - u64 size, - u64 alignment, - unsigned long color) -{ - DRM_MM_BUG_ON(!size); - DRM_MM_BUG_ON(mm->scan_active); - - scan->mm = mm; - - scan->color = color; - scan->alignment = alignment; - scan->size = size; - - scan->check_range = 0; - - scan->hit_start = U64_MAX; - scan->hit_end = 0; - - scan->prev_scanned_node = NULL; -} -EXPORT_SYMBOL(drm_mm_scan_init); - -/** * drm_mm_scan_init_with_range - initialize range-restricted lru scanning * @scan: scan state * @mm: drm_mm to scan @@ -788,7 +748,6 @@ void drm_mm_scan_init_with_range(struct drm_mm_scan *scan, DRM_MM_BUG_ON(end <= start); scan->range_start = start; scan->range_end = end; - scan->check_range = 1;
scan->hit_start = U64_MAX; scan->hit_end = 0; @@ -830,15 +789,11 @@ bool drm_mm_scan_add_block(struct drm_mm_scan *scan, node->node_list.next = &scan->prev_scanned_node->node_list; scan->prev_scanned_node = node;
- adj_start = hole_start = drm_mm_hole_node_start(hole); - adj_end = hole_end = drm_mm_hole_node_end(hole); + hole_start = drm_mm_hole_node_start(hole); + hole_end = drm_mm_hole_node_end(hole);
- if (scan->check_range) { - if (adj_start < scan->range_start) - adj_start = scan->range_start; - if (adj_end > scan->range_end) - adj_end = scan->range_end; - } + adj_start = max(hole_start, scan->range_start); + adj_end = min(hole_end, scan->range_end);
if (mm->color_adjust) mm->color_adjust(hole, scan->color, &adj_start, &adj_end); diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c index 6db0d73c0aa7..77ded288534b 100644 --- a/drivers/gpu/drm/i915/i915_gem_evict.c +++ b/drivers/gpu/drm/i915/i915_gem_evict.c @@ -126,13 +126,9 @@ i915_gem_evict_something(struct i915_address_space *vm, * On each list, the oldest objects lie at the HEAD with the freshest * object on the TAIL. */ - if (start != 0 || end != vm->total) { - drm_mm_scan_init_with_range(&scan, &vm->mm, min_size, - alignment, cache_level, - start, end); - } else - drm_mm_scan_init(&scan, &vm->mm, min_size, - alignment, cache_level); + drm_mm_scan_init_with_range(&scan, &vm->mm, + min_size, alignment, cache_level, + start, end);
/* Retire before we search the active list. Although we have * reasonable accuracy in our retirement lists, we may have diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index fcad718c5fb4..bae0f10da8e3 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -120,7 +120,6 @@ struct drm_mm_scan { struct drm_mm_node *prev_scanned_node;
unsigned long color; - bool check_range : 1; };
/** @@ -387,11 +386,6 @@ __drm_mm_interval_first(const struct drm_mm *mm, u64 start, u64 last); node__ && node__->start < (end__); \ node__ = list_next_entry(node__, node_list))
-void drm_mm_scan_init(struct drm_mm_scan *scan, - struct drm_mm *mm, - u64 size, - u64 alignment, - unsigned long color); void drm_mm_scan_init_with_range(struct drm_mm_scan *scan, struct drm_mm *mm, u64 size, @@ -399,6 +393,33 @@ void drm_mm_scan_init_with_range(struct drm_mm_scan *scan, unsigned long color, u64 start, u64 end); + +/** + * drm_mm_scan_init - initialize lru scanning + * @scan: scan state + * @mm: drm_mm to scan + * @size: size of the allocation + * @alignment: alignment of the allocation + * @color: opaque tag value to use for the allocation + * + * This simply sets up the scanning routines with the parameters for the desired + * hole. Note that there's no need to specify allocation flags, since they only + * change the place a node is allocated from within a suitable hole. + * + * Warning: + * As long as the scan list is non-empty, no other operations than + * adding/removing nodes to/from the scan list are allowed. + */ +static inline void drm_mm_scan_init(struct drm_mm_scan *scan, + struct drm_mm *mm, + u64 size, + u64 alignment, + unsigned long color) +{ + drm_mm_scan_init_with_range(scan, mm, size, alignment, color, + 0, U64_MAX); +} + bool drm_mm_scan_add_block(struct drm_mm_scan *scan, struct drm_mm_node *node); bool drm_mm_scan_remove_block(struct drm_mm_scan *scan,