[PATCH v4 03/25] drm/xe: Decouple exec queue idle check from LRC

[Matthew Brost <matthew.brost@intel.com>]

We already maintain a job count for each exec queue, so simplify the idle
check to rely on the job count rather than the LRC state. This decouples
exec queues from LRC-based backends and avoids unnecessarily coupling idle
detection to backend-specific implementation details.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://patch.msgid.link/20260228013501.106680-4-matthew.brost@intel.com
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
---
 drivers/gpu/drm/xe/xe_exec_queue.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_exec_queue.c b/drivers/gpu/drm/xe/xe_exec_queue.c
index c4213bb9c137..a894551c3ea6 100644
--- a/drivers/gpu/drm/xe/xe_exec_queue.c
+++ b/drivers/gpu/drm/xe/xe_exec_queue.c
@@ -1516,20 +1516,7 @@ bool xe_exec_queue_is_lr(struct xe_exec_queue *q)
  */
 bool xe_exec_queue_is_idle(struct xe_exec_queue *q)
 {
-	if (xe_exec_queue_is_parallel(q)) {
-		int i;
-
-		for (i = 0; i < q->width; ++i) {
-			if (xe_lrc_seqno(q->lrc[i]) !=
-			    q->lrc[i]->fence_ctx.next_seqno - 1)
-				return false;
-		}
-
-		return true;
-	}
-
-	return xe_lrc_seqno(q->lrc[0]) ==
-		q->lrc[0]->fence_ctx.next_seqno - 1;
+	return !atomic_read(&q->job_cnt);
 }
 
 /**
-- 
2.34.1