[PATCH 1/7] drm/xe: Add additional trace points for LRCs

[Stuart Summers <stuart.summers@intel.com>]

Add trace points to indicate when an LRC has been
created and destroyed or get and put.

Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
 drivers/gpu/drm/xe/xe_lrc.c       |  4 +++
 drivers/gpu/drm/xe/xe_lrc.h       |  3 +++
 drivers/gpu/drm/xe/xe_trace_lrc.h | 42 ++++++++++++++++++++++++++++++-
 3 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_lrc.c b/drivers/gpu/drm/xe/xe_lrc.c
index b5083c99dd50..42d1c861fe18 100644
--- a/drivers/gpu/drm/xe/xe_lrc.c
+++ b/drivers/gpu/drm/xe/xe_lrc.c
@@ -1575,6 +1575,8 @@ struct xe_lrc *xe_lrc_create(struct xe_hw_engine *hwe, struct xe_vm *vm,
 		return ERR_PTR(err);
 	}
 
+	trace_xe_lrc_create(lrc);
+
 	return lrc;
 }
 
@@ -1589,6 +1591,8 @@ void xe_lrc_destroy(struct kref *ref)
 {
 	struct xe_lrc *lrc = container_of(ref, struct xe_lrc, refcount);
 
+	trace_xe_lrc_destroy(lrc);
+
 	xe_lrc_finish(lrc);
 	kfree(lrc);
 }
diff --git a/drivers/gpu/drm/xe/xe_lrc.h b/drivers/gpu/drm/xe/xe_lrc.h
index 2fb628da5c43..fd67810f9812 100644
--- a/drivers/gpu/drm/xe/xe_lrc.h
+++ b/drivers/gpu/drm/xe/xe_lrc.h
@@ -8,6 +8,7 @@
 #include <linux/types.h>
 
 #include "xe_lrc_types.h"
+#include "xe_trace_lrc.h"
 
 struct drm_printer;
 struct xe_bb;
@@ -61,6 +62,7 @@ void xe_lrc_destroy(struct kref *ref);
 static inline struct xe_lrc *xe_lrc_get(struct xe_lrc *lrc)
 {
 	kref_get(&lrc->refcount);
+	trace_xe_lrc_get(lrc);
 	return lrc;
 }
 
@@ -73,6 +75,7 @@ static inline struct xe_lrc *xe_lrc_get(struct xe_lrc *lrc)
  */
 static inline void xe_lrc_put(struct xe_lrc *lrc)
 {
+	trace_xe_lrc_put(lrc);
 	kref_put(&lrc->refcount, xe_lrc_destroy);
 }
 
diff --git a/drivers/gpu/drm/xe/xe_trace_lrc.h b/drivers/gpu/drm/xe/xe_trace_lrc.h
index d525cbee1e34..e8daa5d323e7 100644
--- a/drivers/gpu/drm/xe/xe_trace_lrc.h
+++ b/drivers/gpu/drm/xe/xe_trace_lrc.h
@@ -13,7 +13,6 @@
 #include <linux/types.h>
 
 #include "xe_gt_types.h"
-#include "xe_lrc.h"
 #include "xe_lrc_types.h"
 
 #define __dev_name_lrc(lrc)	dev_name(gt_to_xe((lrc)->fence_ctx.gt)->drm.dev)
@@ -42,6 +41,47 @@ TRACE_EVENT(xe_lrc_update_timestamp,
 		      __get_str(device_id))
 );
 
+DECLARE_EVENT_CLASS(xe_lrc,
+	    TP_PROTO(struct xe_lrc *lrc),
+	    TP_ARGS(lrc),
+
+	    TP_STRUCT__entry(
+		     __field(struct xe_lrc *, lrc)
+		     __string(name, lrc->fence_ctx.name)
+		     __string(device_id, __dev_name_lrc(lrc))
+	    ),
+
+	    TP_fast_assign(
+		   __entry->lrc	= lrc;
+		   __assign_str(name);
+		   __assign_str(device_id);
+		   ),
+
+	    TP_printk("lrc=:%p lrc->name=%s device_id:%s",
+		      __entry->lrc, __get_str(name),
+		      __get_str(device_id))
+);
+
+DEFINE_EVENT(xe_lrc, xe_lrc_create,
+	     TP_PROTO(struct xe_lrc *lrc),
+	     TP_ARGS(lrc)
+);
+
+DEFINE_EVENT(xe_lrc, xe_lrc_destroy,
+	     TP_PROTO(struct xe_lrc *lrc),
+	     TP_ARGS(lrc)
+);
+
+DEFINE_EVENT(xe_lrc, xe_lrc_get,
+	     TP_PROTO(struct xe_lrc *lrc),
+	     TP_ARGS(lrc)
+);
+
+DEFINE_EVENT(xe_lrc, xe_lrc_put,
+	     TP_PROTO(struct xe_lrc *lrc),
+	     TP_ARGS(lrc)
+);
+
 #endif
 
 /* This part must be outside protection */
-- 
2.34.1