drm/xe/pm: Add trace for pm functions

Add trace for xe pm function for better debuggability.

v2: Fix indentation and add trace for xe_pm_runtime_get_ioctl

Cc: Matthew Brost <[e-mail]>
Cc: Rodrigo Vivi <[e-mail]>
Reviewed-by: Matthew Brost <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Signed-off-by: Nirmoy Das <[e-mail]>

drivers/gpu/drm/xe/xe_pm.c

···
 #include "xe_guc.h"
 #include "xe_irq.h"
 #include "xe_pcode.h"
+#include "xe_trace.h"
 #include "xe_wa.h"
 
 /**
···
 	int err;
 
 	drm_dbg(&xe->drm, "Suspending device\n");
+	trace_xe_pm_suspend(xe, __builtin_return_address(0));
 
 	for_each_gt(gt, xe, id)
 		xe_gt_suspend_prepare(gt);
···
 	int err;
 
 	drm_dbg(&xe->drm, "Resuming device\n");
+	trace_xe_pm_resume(xe, __builtin_return_address(0));
 
 	for_each_tile(tile, xe, id)
 		xe_wa_apply_tile_workarounds(tile);
···
 	u8 id;
 	int err = 0;
 
+	trace_xe_pm_runtime_suspend(xe, __builtin_return_address(0));
 	/* Disable access_ongoing asserts and prevent recursive pm calls */
 	xe_pm_write_callback_task(xe, current);
 
···
 	u8 id;
 	int err = 0;
 
+	trace_xe_pm_runtime_resume(xe, __builtin_return_address(0));
 	/* Disable access_ongoing asserts and prevent recursive pm calls */
 	xe_pm_write_callback_task(xe, current);
 
···
  */
 void xe_pm_runtime_get(struct xe_device *xe)
 {
+	trace_xe_pm_runtime_get(xe, __builtin_return_address(0));
 	pm_runtime_get_noresume(xe->drm.dev);
 
 	if (xe_pm_read_callback_task(xe) == current)
···
  */
 void xe_pm_runtime_put(struct xe_device *xe)
 {
+	trace_xe_pm_runtime_put(xe, __builtin_return_address(0));
 	if (xe_pm_read_callback_task(xe) == current) {
 		pm_runtime_put_noidle(xe->drm.dev);
 	} else {
···
  */
 int xe_pm_runtime_get_ioctl(struct xe_device *xe)
 {
+	trace_xe_pm_runtime_get_ioctl(xe, __builtin_return_address(0));
 	if (WARN_ON(xe_pm_read_callback_task(xe) == current))
 		return -ELOOP;
 

drivers/gpu/drm/xe/xe_trace.h

···
 		  (u32)(__entry->val >> 32))
 );
 
+DECLARE_EVENT_CLASS(xe_pm_runtime,
+		    TP_PROTO(struct xe_device *xe, void *caller),
+		    TP_ARGS(xe, caller),
+
+		    TP_STRUCT__entry(
+			     __string(dev, __dev_name_xe(xe))
+			     __field(void *, caller)
+			     ),
+
+		    TP_fast_assign(
+			   __assign_str(dev);
+			   __entry->caller = caller;
+			   ),
+
+		    TP_printk("dev=%s caller_function=%pS", __get_str(dev), __entry->caller)
+);
+
+DEFINE_EVENT(xe_pm_runtime, xe_pm_runtime_get,
+	     TP_PROTO(struct xe_device *xe, void *caller),
+	     TP_ARGS(xe, caller)
+);
+
+DEFINE_EVENT(xe_pm_runtime, xe_pm_runtime_put,
+	     TP_PROTO(struct xe_device *xe, void *caller),
+	     TP_ARGS(xe, caller)
+);
+
+DEFINE_EVENT(xe_pm_runtime, xe_pm_resume,
+	     TP_PROTO(struct xe_device *xe, void *caller),
+	     TP_ARGS(xe, caller)
+);
+
+DEFINE_EVENT(xe_pm_runtime, xe_pm_suspend,
+	     TP_PROTO(struct xe_device *xe, void *caller),
+	     TP_ARGS(xe, caller)
+);
+
+DEFINE_EVENT(xe_pm_runtime, xe_pm_runtime_resume,
+	     TP_PROTO(struct xe_device *xe, void *caller),
+	     TP_ARGS(xe, caller)
+);
+
+DEFINE_EVENT(xe_pm_runtime, xe_pm_runtime_suspend,
+	     TP_PROTO(struct xe_device *xe, void *caller),
+	     TP_ARGS(xe, caller)
+);
+
+DEFINE_EVENT(xe_pm_runtime, xe_pm_runtime_get_ioctl,
+	     TP_PROTO(struct xe_device *xe, void *caller),
+	     TP_ARGS(xe, caller)
+);
+
 #endif
 
 /* This part must be outside protection */