[PATCH v8 09/10] drm: get rid of drm_sched_job::id

[Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>]

Its only purpose was for trace events, but jobs can already be
uniquely identified using their fence.

The downside of using the fence is that it's only available
after 'drm_sched_job_arm' was called which is true for all trace
events that used job.id so they can safely switch to using it.

Suggested-by: Tvrtko Ursulin <tursulin@igalia.com>
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h      | 18 ++++++------------
 .../gpu/drm/scheduler/gpu_scheduler_trace.h    | 18 ++++++------------
 drivers/gpu/drm/scheduler/sched_main.c         |  1 -
 include/drm/gpu_scheduler.h                    |  3 ---
 4 files changed, 12 insertions(+), 28 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
index 383fce40d4dd..a4f394d827bc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
@@ -167,7 +167,6 @@ TRACE_EVENT(amdgpu_cs_ioctl,
 	    TP_PROTO(struct amdgpu_job *job),
 	    TP_ARGS(job),
 	    TP_STRUCT__entry(
-			     __field(uint64_t, sched_job_id)
 			     __string(timeline, AMDGPU_JOB_GET_TIMELINE_NAME(job))
 			     __field(unsigned int, context)
 			     __field(unsigned int, seqno)
@@ -177,15 +176,14 @@ TRACE_EVENT(amdgpu_cs_ioctl,
 			     ),
 
 	    TP_fast_assign(
-			   __entry->sched_job_id = job->base.id;
 			   __assign_str(timeline);
 			   __entry->context = job->base.s_fence->finished.context;
 			   __entry->seqno = job->base.s_fence->finished.seqno;
 			   __assign_str(ring);
 			   __entry->num_ibs = job->num_ibs;
 			   ),
-	    TP_printk("sched_job=%llu, timeline=%s, context=%u, seqno=%u, ring_name=%s, num_ibs=%u",
-		      __entry->sched_job_id, __get_str(timeline), __entry->context,
+	    TP_printk("timeline=%s, context=%u, seqno=%u, ring_name=%s, num_ibs=%u",
+		      __get_str(timeline), __entry->context,
 		      __entry->seqno, __get_str(ring), __entry->num_ibs)
 );
 
@@ -193,7 +191,6 @@ TRACE_EVENT(amdgpu_sched_run_job,
 	    TP_PROTO(struct amdgpu_job *job),
 	    TP_ARGS(job),
 	    TP_STRUCT__entry(
-			     __field(uint64_t, sched_job_id)
 			     __string(timeline, AMDGPU_JOB_GET_TIMELINE_NAME(job))
 			     __field(unsigned int, context)
 			     __field(unsigned int, seqno)
@@ -202,15 +199,14 @@ TRACE_EVENT(amdgpu_sched_run_job,
 			     ),
 
 	    TP_fast_assign(
-			   __entry->sched_job_id = job->base.id;
 			   __assign_str(timeline);
 			   __entry->context = job->base.s_fence->finished.context;
 			   __entry->seqno = job->base.s_fence->finished.seqno;
 			   __assign_str(ring);
 			   __entry->num_ibs = job->num_ibs;
 			   ),
-	    TP_printk("sched_job=%llu, timeline=%s, context=%u, seqno=%u, ring_name=%s, num_ibs=%u",
-		      __entry->sched_job_id, __get_str(timeline), __entry->context,
+	    TP_printk("timeline=%s, context=%u, seqno=%u, ring_name=%s, num_ibs=%u",
+		      __get_str(timeline), __entry->context,
 		      __entry->seqno, __get_str(ring), __entry->num_ibs)
 );
 
@@ -519,7 +515,6 @@ TRACE_EVENT(amdgpu_ib_pipe_sync,
 	    TP_ARGS(sched_job, fence),
 	    TP_STRUCT__entry(
 			     __string(ring, sched_job->base.sched->name)
-			     __field(uint64_t, id)
 			     __field(struct dma_fence *, fence)
 			     __field(uint64_t, ctx)
 			     __field(unsigned, seqno)
@@ -527,13 +522,12 @@ TRACE_EVENT(amdgpu_ib_pipe_sync,
 
 	    TP_fast_assign(
 			   __assign_str(ring);
-			   __entry->id = sched_job->base.id;
 			   __entry->fence = fence;
 			   __entry->ctx = fence->context;
 			   __entry->seqno = fence->seqno;
 			   ),
-	    TP_printk("job ring=%s, id=%llu, need pipe sync to fence=%p, context=%llu, seq=%u",
-		      __get_str(ring), __entry->id,
+	    TP_printk("job ring=%s need pipe sync to fence=%p, context=%llu, seq=%u",
+		      __get_str(ring),
 		      __entry->fence, __entry->ctx,
 		      __entry->seqno)
 );
diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h b/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
index 3c7f6a39cf91..ad03240b2f03 100644
--- a/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
+++ b/drivers/gpu/drm/scheduler/gpu_scheduler_trace.h
@@ -58,7 +58,6 @@ 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(uint64_t, id)
 			     __string(name, sched_job->sched->name)
 			     __field(u32, job_count)
 			     __field(int, hw_job_count)
@@ -69,7 +68,6 @@ DECLARE_EVENT_CLASS(drm_sched_job,
 			     ),
 
 	    TP_fast_assign(
-			   __entry->id = sched_job->id;
 			   __assign_str(name);
 			   __entry->job_count = spsc_queue_count(&entity->job_queue);
 			   __entry->hw_job_count = atomic_read(
@@ -79,8 +77,8 @@ DECLARE_EVENT_CLASS(drm_sched_job,
 			   __entry->fence_seqno = sched_job->s_fence->finished.seqno;
 			   __entry->client_id = sched_job->s_fence->drm_client_id;
 			   ),
-	    TP_printk("dev=%s, id=%llu, fence=%llu:%llu, ring=%s, job count:%u, hw job count:%d, client_id:%llu",
-		      __get_str(dev), __entry->id,
+	    TP_printk("dev=%s, fence=%llu:%llu, ring=%s, job count:%u, hw job count:%d, client_id:%llu",
+		      __get_str(dev),
 		      __entry->fence_context, __entry->fence_seqno, __get_str(name),
 		      __entry->job_count, __entry->hw_job_count, __entry->client_id)
 );
@@ -117,7 +115,6 @@ TRACE_EVENT(drm_sched_job_add_dep,
 	TP_STRUCT__entry(
 		    __field(u64, fence_context)
 		    __field(u64, fence_seqno)
-		    __field(u64, id)
 		    __field(u64, ctx)
 		    __field(u64, seqno)
 		    ),
@@ -125,12 +122,11 @@ TRACE_EVENT(drm_sched_job_add_dep,
 	TP_fast_assign(
 		    __entry->fence_context = sched_job->s_fence->finished.context;
 		    __entry->fence_seqno = sched_job->s_fence->finished.seqno;
-		    __entry->id = sched_job->id;
 		    __entry->ctx = fence->context;
 		    __entry->seqno = fence->seqno;
 		    ),
-	TP_printk("fence=%llu:%llu, id=%llu depends on fence=%llu:%llu",
-		  __entry->fence_context, __entry->fence_seqno, __entry->id,
+	TP_printk("fence=%llu:%llu depends on fence=%llu:%llu",
+		  __entry->fence_context, __entry->fence_seqno,
 		  __entry->ctx, __entry->seqno)
 );
 
@@ -140,7 +136,6 @@ TRACE_EVENT(drm_sched_job_unschedulable,
 	    TP_STRUCT__entry(
 			     __field(u64, fence_context)
 			     __field(u64, fence_seqno)
-			     __field(uint64_t, id)
 			     __field(u64, ctx)
 			     __field(u64, seqno)
 			     ),
@@ -148,12 +143,11 @@ TRACE_EVENT(drm_sched_job_unschedulable,
 	    TP_fast_assign(
 			   __entry->fence_context = sched_job->s_fence->finished.context;
 			   __entry->fence_seqno = sched_job->s_fence->finished.seqno;
-			   __entry->id = sched_job->id;
 			   __entry->ctx = fence->context;
 			   __entry->seqno = fence->seqno;
 			   ),
-	    TP_printk("fence=%llu:%llu, id=%llu depends on unsignalled fence=%llu:%llu",
-		      __entry->fence_context, __entry->fence_seqno, __entry->id,
+	    TP_printk("fence=%llu:%llu depends on unsignalled fence=%llu:%llu",
+		      __entry->fence_context, __entry->fence_seqno,
 		      __entry->ctx, __entry->seqno)
 );
 
diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 85c2111e5500..85e0ba850746 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -848,7 +848,6 @@ void drm_sched_job_arm(struct drm_sched_job *job)
 
 	job->sched = sched;
 	job->s_priority = entity->priority;
-	job->id = atomic64_inc_return(&sched->job_id_count);
 
 	drm_sched_fence_init(job->s_fence, job->entity);
 }
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
index 032214a49138..ddc24512c281 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -326,7 +326,6 @@ struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f);
  * @finish_cb: the callback for the finished fence.
  * @credits: the number of credits this job contributes to the scheduler
  * @work: Helper to reschedule job kill to different context.
- * @id: a unique id assigned to each job scheduled on the scheduler.
  * @karma: increment on every hang caused by this job. If this exceeds the hang
  *         limit of the scheduler then the job is marked guilty and will not
  *         be scheduled further.
@@ -339,8 +338,6 @@ struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f);
  * to schedule the job.
  */
 struct drm_sched_job {
-	u64				id;
-
 	/**
 	 * @submit_ts:
 	 *
-- 
2.43.0