drm/amdgpu: add tracepoint for scheduler (v2)

track sched job status like the length of job queue and hw job queue.

v2: fix build after rebase

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

diff --git a/drivers/gpu/drm/amd/scheduler/gpu_sched_trace.h b/drivers/gpu/drm/amd/scheduler/gpu_sched_trace.h
new file mode 100644 (file)
index 0000000..a1f4ece
--- /dev/null
+++ b/drivers/gpu/drm/amd/scheduler/gpu_sched_trace.h
@@ -0,0 +1,41 @@
+#if !defined(_GPU_SCHED_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _GPU_SCHED_TRACE_H_
+
+#include <linux/stringify.h>
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+#include <drm/drmP.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM gpu_sched
+#define TRACE_INCLUDE_FILE gpu_sched_trace
+
+TRACE_EVENT(amd_sched_job,
+           TP_PROTO(struct amd_sched_job *sched_job),
+           TP_ARGS(sched_job),
+           TP_STRUCT__entry(
+                            __field(struct amd_sched_entity *, entity)
+                            __field(u32, ring_id)
+                            __field(u32, job_count)
+                            __field(int, hw_job_count)
+                            ),
+
+           TP_fast_assign(
+                          __entry->entity = sched_job->s_entity;
+                          __entry->ring_id = sched_job->sched->ring_id;
+                          __entry->job_count = kfifo_len(
+                                  &sched_job->s_entity->job_queue) / sizeof(sched_job);
+                          __entry->hw_job_count = atomic_read(
+                                  &sched_job->sched->hw_rq_count);
+                          ),
+           TP_printk("entity=%p, ring=%u, job count:%u, hw job count:%d",
+                     __entry->entity, __entry->ring_id, __entry->job_count,
+                     __entry->hw_job_count)
+);
+#endif
+
+/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#include <trace/define_trace.h>

diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
index 9259f1b..5ad7fa8 100644 (file)
--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
+++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
@@ -27,6 +27,9 @@
 #include <drm/drmP.h>
 #include "gpu_scheduler.h"
 
+#define CREATE_TRACE_POINTS
+#include "gpu_sched_trace.h"
+
 static struct amd_sched_job *
 amd_sched_entity_pop_job(struct amd_sched_entity *entity);
 static void amd_sched_wakeup(struct amd_gpu_scheduler *sched);
@@ -273,7 +276,7 @@ int amd_sched_entity_push_job(struct amd_sched_job *sched_job)
 
        wait_event(entity->scheduler->job_scheduled,
                   amd_sched_entity_in(sched_job));
-
+       trace_amd_sched_job(sched_job);
        return 0;
 }