diff mbox

[1/6] drm/i915/bdw+: Replace list_del+list_add_tail with list_move_tail

Message ID 1452184581-21075-2-git-send-email-tvrtko.ursulin@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Tvrtko Ursulin Jan. 7, 2016, 4:36 p.m. UTC 
From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Same effect for slightly less source code and resulting binary.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/intel_lrc.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

Comments

Chris Wilson Jan. 7, 2016, 4:45 p.m. UTC | #1 
On Thu, Jan 07, 2016 at 04:36:16PM +0000, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> 
> Same effect for slightly less source code and resulting binary.

How about last year's patch that removed 200 lines from this very code
in lrc?
-Chris
Tvrtko Ursulin Jan. 7, 2016, 5:18 p.m. UTC | #2 
On 07/01/16 16:45, Chris Wilson wrote:
> On Thu, Jan 07, 2016 at 04:36:16PM +0000, Tvrtko Ursulin wrote:
>> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
>>
>> Same effect for slightly less source code and resulting binary.
>
> How about last year's patch that removed 200 lines from this very code
> in lrc?

If it is small enough for easy quick review you can rebase and resend?

Although I have other things from you to review first.

Regards,

Tvrtko
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 23839ff04e27..8b6071fcd743 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -431,9 +431,8 @@  static void execlists_context_unqueue(struct intel_engine_cs *ring)
 			/* Same ctx: ignore first request, as second request
 			 * will update tail past first request's workload */
 			cursor->elsp_submitted = req0->elsp_submitted;
-			list_del(&req0->execlist_link);
-			list_add_tail(&req0->execlist_link,
-				&ring->execlist_retired_req_list);
+			list_move_tail(&req0->execlist_link,
+				       &ring->execlist_retired_req_list);
 			req0 = cursor;
 		} else {
 			req1 = cursor;
@@ -485,9 +484,8 @@  static bool execlists_check_remove_request(struct intel_engine_cs *ring,
 			     "Never submitted head request\n");
 
 			if (--head_req->elsp_submitted <= 0) {
-				list_del(&head_req->execlist_link);
-				list_add_tail(&head_req->execlist_link,
-					&ring->execlist_retired_req_list);
+				list_move_tail(&head_req->execlist_link,
+					       &ring->execlist_retired_req_list);
 				return true;
 			}
 		}
@@ -608,9 +606,8 @@  static int execlists_context_queue(struct drm_i915_gem_request *request)
 		if (request->ctx == tail_req->ctx) {
 			WARN(tail_req->elsp_submitted != 0,
 				"More than 2 already-submitted reqs queued\n");
-			list_del(&tail_req->execlist_link);
-			list_add_tail(&tail_req->execlist_link,
-				&ring->execlist_retired_req_list);
+			list_move_tail(&tail_req->execlist_link,
+				       &ring->execlist_retired_req_list);
 		}
 	}