linux-kernel - [PATCH v8 04/10] drm/sched: cleanup gpu

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Message-ID: <20250320095818.40622-5-pierre-eric.pelloux-prayer@amd.com>
Date: Thu, 20 Mar 2025 10:58:00 +0100
From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
To: Matthew Brost <matthew.brost@...el.com>, Danilo Krummrich
	<dakr@...nel.org>, Philipp Stanner <phasta@...nel.org>,
	Christian König <ckoenig.leichtzumerken@...il.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
	<mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David Airlie
	<airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Sumit Semwal
	<sumit.semwal@...aro.org>
CC: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>,
	<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
	<linux-media@...r.kernel.org>, <linaro-mm-sig@...ts.linaro.org>
Subject: [PATCH v8 04/10] drm/sched: cleanup gpu_scheduler trace events

A fence uniquely identify a job, so this commits updates the places
where a kernel pointer was used as an identifier by:

   "fence=%llu:%llu"

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
---
 .../gpu/drm/scheduler/gpu_scheduler_trace.h   | 45 ++++++++++---------
 1 file changed, 24 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h b/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
index 713df3516a17..21a85ee59066 100644
--- a/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
+++ b/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
@@ -36,28 +36,29 @@ DECLARE_EVENT_CLASS(drm_sched_job,
 	    TP_PROTO(struct drm_sched_job *sched_job, struct drm_sched_entity *entity),
 	    TP_ARGS(sched_job, entity),
 	    TP_STRUCT__entry(
-			     __field(struct drm_sched_entity *, entity)
-			     __field(struct dma_fence *, fence)
-			     __string(name, sched_job->sched->name)
 			     __field(uint64_t, id)
+			     __string(name, sched_job->sched->name)
 			     __field(u32, job_count)
 			     __field(int, hw_job_count)
 			     __string(dev, dev_name(sched_job->sched->dev))
+			     __field(u64, fence_context)
+			     __field(u64, fence_seqno)
 			     ),
 
 	    TP_fast_assign(
-			   __entry->entity = entity;
 			   __entry->id = sched_job->id;
-			   __entry->fence = &sched_job->s_fence->finished;
 			   __assign_str(name);
 			   __entry->job_count = spsc_queue_count(&entity->job_queue);
 			   __entry->hw_job_count = atomic_read(
 				   &sched_job->sched->credit_count);
 			   __assign_str(dev);
+			   __entry->fence_context = sched_job->s_fence->finished.context;
+			   __entry->fence_seqno = sched_job->s_fence->finished.seqno;
+
 			   ),
-	    TP_printk("dev=%s, entity=%p, id=%llu, fence=%p, ring=%s, job count:%u, hw job count:%d",
-		      __get_str(dev), __entry->entity, __entry->id,
-		      __entry->fence, __get_str(name),
+	    TP_printk("dev=%s, id=%llu, fence=%llu:%llu, ring=%s, job count:%u, hw job count:%d",
+		      __get_str(dev), __entry->id,
+		      __entry->fence_context, __entry->fence_seqno, __get_str(name),
 		      __entry->job_count, __entry->hw_job_count)
 );
 
@@ -75,37 +76,39 @@ TRACE_EVENT(drm_sched_process_job,
 	    TP_PROTO(struct drm_sched_fence *fence),
 	    TP_ARGS(fence),
 	    TP_STRUCT__entry(
-		    __field(struct dma_fence *, fence)
+		    __field(u64, fence_context)
+		    __field(u64, fence_seqno)
 		    ),
 
 	    TP_fast_assign(
-		    __entry->fence = &fence->finished;
+		    __entry->fence_context = fence->finished.context;
+		    __entry->fence_seqno = fence->finished.seqno;
 		    ),
-	    TP_printk("fence=%p signaled", __entry->fence)
+	    TP_printk("fence=%llu:%llu signaled",
+		      __entry->fence_context, __entry->fence_seqno)
 );
 
 TRACE_EVENT(drm_sched_job_wait_dep,
 	    TP_PROTO(struct drm_sched_job *sched_job, struct dma_fence *fence),
 	    TP_ARGS(sched_job, fence),
 	    TP_STRUCT__entry(
-			     __string(name, sched_job->sched->name)
+			     __field(u64, fence_context)
+			     __field(u64, fence_seqno)
 			     __field(uint64_t, id)
-			     __field(struct dma_fence *, fence)
-			     __field(uint64_t, ctx)
-			     __field(unsigned, seqno)
+			     __field(u64, ctx)
+			     __field(u64, seqno)
 			     ),
 
 	    TP_fast_assign(
-			   __assign_str(name);
+			   __entry->fence_context = sched_job->s_fence->finished.context;
+			   __entry->fence_seqno = sched_job->s_fence->finished.seqno;
 			   __entry->id = sched_job->id;
-			   __entry->fence = fence;
 			   __entry->ctx = fence->context;
 			   __entry->seqno = fence->seqno;
 			   ),
-	    TP_printk("job ring=%s, id=%llu, depends fence=%p, context=%llu, seq=%u",
-		      __get_str(name), __entry->id,
-		      __entry->fence, __entry->ctx,
-		      __entry->seqno)
+	    TP_printk("fence=%llu:%llu, id=%llu depends on unsignalled fence=%llu:%llu",
+		      __entry->fence_context, __entry->fence_seqno, __entry->id,
+		      __entry->ctx, __entry->seqno)
 );
 
 #endif /* _GPU_SCHED_TRACE_H_ */
-- 
2.43.0