drm/amd/sched: add a unique job id to amd_sched_job

A unique id is useful for debugging and tracing. Intended to replace
pointers in ftrace output.

Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
index d8dc681..e037b1e 100644
--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
+++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
@@ -80,6 +80,7 @@ struct amd_sched_job {
 	struct work_struct		finish_work;
 	struct list_head		node;
 	struct delayed_work		work_tdr;
+	uint64_t			id;
 };
 
 extern const struct dma_fence_ops amd_sched_fence_ops_scheduled;
@@ -124,6 +125,7 @@ struct amd_gpu_scheduler {
 	wait_queue_head_t		wake_up_worker;
 	wait_queue_head_t		job_scheduled;
 	atomic_t			hw_rq_count;
+	atomic64_t			job_id_count;
 	struct task_struct		*thread;
 	struct list_head	ring_mirror_list;
 	spinlock_t			job_list_lock;