linux-kernel - [PATCH-resent-to-correct-ml 5/8] drm/xe/coredump: Use guard helpers for xe_force

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Message-ID: <20250204132238.162608-6-dev@lankhorst.se>
Date: Tue,  4 Feb 2025 14:22:34 +0100
From: Maarten Lankhorst <dev@...khorst.se>
To: intel-xe@...ts.freedesktop.org
Cc: dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Maarten Lankhorst <dev@...khorst.se>,
	Ingo Molnar <mingo@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Will Deacon <will@...nel.org>,
	Waiman Long <longman@...hat.com>,
	Boqun Feng <boqun.feng@...il.com>
Subject: [PATCH-resent-to-correct-ml 5/8] drm/xe/coredump: Use guard helpers for xe_force_wake.

---
 drivers/gpu/drm/xe/xe_devcoredump.c | 36 ++++++++++++++---------------
 1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_devcoredump.c b/drivers/gpu/drm/xe/xe_devcoredump.c
index 39fe485d20858..afe229fba8a9c 100644
--- a/drivers/gpu/drm/xe/xe_devcoredump.c
+++ b/drivers/gpu/drm/xe/xe_devcoredump.c
@@ -233,7 +233,6 @@ static void xe_devcoredump_deferred_snap_work(struct work_struct *work)
 	struct xe_devcoredump_snapshot *ss = container_of(work, typeof(*ss), work);
 	struct xe_devcoredump *coredump = container_of(ss, typeof(*coredump), snapshot);
 	struct xe_device *xe = coredump_to_xe(coredump);
-	unsigned int fw_ref;
 
 	/*
 	 * NB: Despite passing a GFP_ flags parameter here, more allocations are done
@@ -247,12 +246,13 @@ static void xe_devcoredump_deferred_snap_work(struct work_struct *work)
 	xe_pm_runtime_get(xe);
 
 	/* keep going if fw fails as we still want to save the memory and SW data */
-	fw_ref = xe_force_wake_get(gt_to_fw(ss->gt), XE_FORCEWAKE_ALL);
-	if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL))
-		xe_gt_info(ss->gt, "failed to get forcewake for coredump capture\n");
-	xe_vm_snapshot_capture_delayed(ss->vm);
-	xe_guc_exec_queue_snapshot_capture_delayed(ss->ge);
-	xe_force_wake_put(gt_to_fw(ss->gt), fw_ref);
+	scoped_guard(xe_force_wake, gt_to_fw(ss->gt), XE_FORCEWAKE_ALL) {
+		if (!xe_force_wake_scope_has_domain(XE_FORCEWAKE_ALL))
+			xe_gt_info(ss->gt, "failed to get forcewake for coredump capture\n");
+
+		xe_vm_snapshot_capture_delayed(ss->vm);
+		xe_guc_exec_queue_snapshot_capture_delayed(ss->ge);
+	}
 
 	xe_pm_runtime_put(xe);
 
@@ -277,7 +277,6 @@ static void devcoredump_snapshot(struct xe_devcoredump *coredump,
 	u32 width_mask = (0x1 << q->width) - 1;
 	const char *process_name = "no process";
 
-	unsigned int fw_ref;
 	bool cookie;
 	int i;
 
@@ -305,20 +304,19 @@ static void devcoredump_snapshot(struct xe_devcoredump *coredump,
 	}
 
 	/* keep going if fw fails as we still want to save the memory and SW data */
-	fw_ref = xe_force_wake_get(gt_to_fw(q->gt), XE_FORCEWAKE_ALL);
-
-	ss->guc.log = xe_guc_log_snapshot_capture(&guc->log, true);
-	ss->guc.ct = xe_guc_ct_snapshot_capture(&guc->ct);
-	ss->ge = xe_guc_exec_queue_snapshot_capture(q);
-	if (job)
-		ss->job = xe_sched_job_snapshot_capture(job);
-	ss->vm = xe_vm_snapshot_capture(q->vm);
-
-	xe_engine_snapshot_capture_for_queue(q);
+	scoped_guard(xe_force_wake, gt_to_fw(ss->gt), XE_FORCEWAKE_ALL) {
+		ss->guc.log = xe_guc_log_snapshot_capture(&guc->log, true);
+		ss->guc.ct = xe_guc_ct_snapshot_capture(&guc->ct);
+		ss->ge = xe_guc_exec_queue_snapshot_capture(q);
+		if (job)
+			ss->job = xe_sched_job_snapshot_capture(job);
+		ss->vm = xe_vm_snapshot_capture(q->vm);
+
+		xe_engine_snapshot_capture_for_queue(q);
+	}
 
 	queue_work(system_unbound_wq, &ss->work);
 
-	xe_force_wake_put(gt_to_fw(q->gt), fw_ref);
 	dma_fence_end_signalling(cookie);
 }
 
-- 
2.47.1