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authorChris Wilson <chris@chris-wilson.co.uk>2016-07-26 14:01:51 +0300
committerChris Wilson <chris@chris-wilson.co.uk>2016-07-26 15:00:58 +0300
commit2a1d775201081c400d7e60ceb8e5ac887d11b1f7 (patch)
tree5bd3ef0d28b31918b4325c4f74459855ba2f2095 /drivers/gpu/drm/i915/i915_gem_shrinker.c
parent4a50d20e105a4a8e46a641e4779e9431e0aabc84 (diff)
downloadlinux-2a1d775201081c400d7e60ceb8e5ac887d11b1f7.tar.xz
drm/i915: Prefer list_first_entry_or_null
list_first_entry_or_null() can generate better code than using if (!list_empty()) {ptr = list_first_entry()) ..., so put it to use. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1469432687-22756-3-git-send-email-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1469530913-17180-2-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_shrinker.c')
-rw-r--r--drivers/gpu/drm/i915/i915_gem_shrinker.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_shrinker.c b/drivers/gpu/drm/i915/i915_gem_shrinker.c
index afaa2597e35e..5d4772c146b1 100644
--- a/drivers/gpu/drm/i915/i915_gem_shrinker.c
+++ b/drivers/gpu/drm/i915/i915_gem_shrinker.c
@@ -163,17 +163,18 @@ i915_gem_shrink(struct drm_i915_private *dev_priv,
*/
for (phase = phases; phase->list; phase++) {
struct list_head still_in_list;
+ struct drm_i915_gem_object *obj;
if ((flags & phase->bit) == 0)
continue;
INIT_LIST_HEAD(&still_in_list);
- while (count < target && !list_empty(phase->list)) {
- struct drm_i915_gem_object *obj;
+ while (count < target &&
+ (obj = list_first_entry_or_null(phase->list,
+ typeof(*obj),
+ global_list))) {
struct i915_vma *vma, *v;
- obj = list_first_entry(phase->list,
- typeof(*obj), global_list);
list_move_tail(&obj->global_list, &still_in_list);
if (flags & I915_SHRINK_PURGEABLE &&