From: Matthew Brost <matthew.brost@intel.com>
Date: Wed, 8 Oct 2025 21:45:26 +0000 (-0700)
Subject: drm/xe/vf: Add debug prints for GuC replaying state during VF recovery
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1521fad9ad876238161fc25d91b7274a4a0b63d9;p=thirdparty%2Fkernel%2Flinux.git

drm/xe/vf: Add debug prints for GuC replaying state during VF recovery

Helpful to manually verify the GuC state machine can correctly replay
the state during a VF post-migration recovery. All replay paths have
been manually verified as triggered and working during testing.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tomasz Lis <tomasz.lis@intel.com>
Link: https://lore.kernel.org/r/20251008214532.3442967-29-matthew.brost@intel.com
---

diff --git a/drivers/gpu/drm/xe/xe_guc_submit.c b/drivers/gpu/drm/xe/xe_guc_submit.c
index b4c09604c5ea3..e9aa0625ce60d 100644
--- a/drivers/gpu/drm/xe/xe_guc_submit.c
+++ b/drivers/gpu/drm/xe/xe_guc_submit.c
@@ -2037,21 +2037,27 @@ void xe_guc_submit_stop(struct xe_guc *guc)
 
 }
 
-static void guc_exec_queue_revert_pending_state_change(struct xe_exec_queue *q)
+static void guc_exec_queue_revert_pending_state_change(struct xe_guc *guc,
+						       struct xe_exec_queue *q)
 {
 	bool pending_enable, pending_disable, pending_resume;
 
 	pending_enable = exec_queue_pending_enable(q);
 	pending_resume = exec_queue_pending_resume(q);
 
-	if (pending_enable && pending_resume)
+	if (pending_enable && pending_resume) {
 		q->guc->needs_resume = true;
+		xe_gt_dbg(guc_to_gt(guc), "Replay RESUME - guc_id=%d",
+			  q->guc->id);
+	}
 
 	if (pending_enable && !pending_resume &&
 	    !exec_queue_pending_tdr_exit(q)) {
 		clear_exec_queue_registered(q);
 		if (xe_exec_queue_is_lr(q))
 			xe_exec_queue_put(q);
+		xe_gt_dbg(guc_to_gt(guc), "Replay REGISTER - guc_id=%d",
+			  q->guc->id);
 	}
 
 	if (pending_enable) {
@@ -2059,6 +2065,8 @@ static void guc_exec_queue_revert_pending_state_change(struct xe_exec_queue *q)
 		clear_exec_queue_pending_resume(q);
 		clear_exec_queue_pending_tdr_exit(q);
 		clear_exec_queue_pending_enable(q);
+		xe_gt_dbg(guc_to_gt(guc), "Replay ENABLE - guc_id=%d",
+			  q->guc->id);
 	}
 
 	if (exec_queue_destroyed(q) && exec_queue_registered(q)) {
@@ -2068,6 +2076,8 @@ static void guc_exec_queue_revert_pending_state_change(struct xe_exec_queue *q)
 		else
 			q->guc->needs_cleanup = true;
 		clear_exec_queue_extra_ref(q);
+		xe_gt_dbg(guc_to_gt(guc), "Replay CLEANUP - guc_id=%d",
+			  q->guc->id);
 	}
 
 	pending_disable = exec_queue_pending_disable(q);
@@ -2075,6 +2085,8 @@ static void guc_exec_queue_revert_pending_state_change(struct xe_exec_queue *q)
 	if (pending_disable && exec_queue_suspended(q)) {
 		clear_exec_queue_suspended(q);
 		q->guc->needs_suspend = true;
+		xe_gt_dbg(guc_to_gt(guc), "Replay SUSPEND - guc_id=%d",
+			  q->guc->id);
 	}
 
 	if (pending_disable) {
@@ -2082,6 +2094,8 @@ static void guc_exec_queue_revert_pending_state_change(struct xe_exec_queue *q)
 			set_exec_queue_enabled(q);
 		clear_exec_queue_pending_disable(q);
 		clear_exec_queue_check_timeout(q);
+		xe_gt_dbg(guc_to_gt(guc), "Replay DISABLE - guc_id=%d",
+			  q->guc->id);
 	}
 
 	q->guc->resume_time = 0;
@@ -2107,7 +2121,7 @@ static void guc_exec_queue_pause(struct xe_guc *guc, struct xe_exec_queue *q)
 	else
 		cancel_delayed_work_sync(&sched->base.work_tdr);
 
-	guc_exec_queue_revert_pending_state_change(q);
+	guc_exec_queue_revert_pending_state_change(guc, q);
 
 	if (xe_exec_queue_is_parallel(q)) {
 		struct xe_device *xe = guc_to_xe(guc);
@@ -2222,6 +2236,9 @@ static void guc_exec_queue_unpause_prepare(struct xe_guc *guc,
 	list_for_each_entry(s_job, &sched->base.pending_list, list) {
 		job = to_xe_sched_job(s_job);
 
+		xe_gt_dbg(guc_to_gt(guc), "Replay JOB - guc_id=%d, seqno=%d",
+			  q->guc->id, xe_sched_job_seqno(job));
+
 		q->ring_ops->emit_job(job);
 		job->skip_emit = true;
 	}