Merge branch 'drm-tracepoints' into drm-testing

drivers/gpu/drm/Makefile

@@ -11,14 +11,17 @@ drm-y       :=	drm_auth.o drm_buffer.o drm_bufs.o drm_cache.o \
 		drm_agpsupport.o drm_scatter.o ati_pcigart.o drm_pci.o \
 		drm_platform.o drm_sysfs.o drm_hashtab.o drm_sman.o drm_mm.o \
 		drm_crtc.o drm_modes.o drm_edid.o \
-		drm_info.o drm_debugfs.o drm_encoder_slave.o
+		drm_info.o drm_debugfs.o drm_encoder_slave.o \
+		drm_trace_points.o
 
 drm-$(CONFIG_COMPAT) += drm_ioc32.o
 
 drm_kms_helper-y := drm_fb_helper.o drm_crtc_helper.o drm_dp_i2c_helper.o
 
 obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
 
+CFLAGS_drm_trace_points.o := -I$(src)
+
 obj-$(CONFIG_DRM)	+= drm.o
 obj-$(CONFIG_DRM_TTM)	+= ttm/
 obj-$(CONFIG_DRM_TDFX)	+= tdfx/

drivers/gpu/drm/drm_irq.c

@@ -34,6 +34,7 @@
  */
 
 #include "drmP.h"
+#include "drm_trace.h"
 
 #include <linux/interrupt.h>	/* For task queue support */
 #include <linux/slab.h>
@@ -590,6 +591,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
 		return -ENOMEM;
 
 	e->pipe = pipe;
+	e->base.pid = current->pid;
 	e->event.base.type = DRM_EVENT_VBLANK;
 	e->event.base.length = sizeof e->event;
 	e->event.user_data = vblwait->request.signal;
@@ -617,13 +619,18 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
 	DRM_DEBUG("event on vblank count %d, current %d, crtc %d\n",
 		  vblwait->request.sequence, seq, pipe);
 
+	trace_drm_vblank_event_queued(current->pid, pipe,
+				      vblwait->request.sequence);
+
 	e->event.sequence = vblwait->request.sequence;
 	if ((seq - vblwait->request.sequence) <= (1 << 23)) {
 		e->event.tv_sec = now.tv_sec;
 		e->event.tv_usec = now.tv_usec;
 		drm_vblank_put(dev, e->pipe);
 		list_add_tail(&e->base.link, &e->base.file_priv->event_list);
 		wake_up_interruptible(&e->base.file_priv->event_wait);
+		trace_drm_vblank_event_delivered(current->pid, pipe,
+						 vblwait->request.sequence);
 	} else {
 		list_add_tail(&e->base.link, &dev->vblank_event_list);
 	}
@@ -754,9 +761,13 @@ void drm_handle_vblank_events(struct drm_device *dev, int crtc)
 		drm_vblank_put(dev, e->pipe);
 		list_move_tail(&e->base.link, &e->base.file_priv->event_list);
 		wake_up_interruptible(&e->base.file_priv->event_wait);
+		trace_drm_vblank_event_delivered(e->base.pid, e->pipe,
+						 e->event.sequence);
 	}
 
 	spin_unlock_irqrestore(&dev->event_lock, flags);
+
+	trace_drm_vblank_event(crtc, seq);
 }
 
 /**

drivers/gpu/drm/drm_trace.h

@@ -0,0 +1,66 @@
+#if !defined(_DRM_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
+#define _DRM_TRACE_H_
+
+#include <linux/stringify.h>
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM drm
+#define TRACE_SYSTEM_STRING __stringify(TRACE_SYSTEM)
+#define TRACE_INCLUDE_FILE drm_trace
+
+TRACE_EVENT(drm_vblank_event,
+	    TP_PROTO(int crtc, unsigned int seq),
+	    TP_ARGS(crtc, seq),
+	    TP_STRUCT__entry(
+		    __field(int, crtc)
+		    __field(unsigned int, seq)
+		    ),
+	    TP_fast_assign(
+		    __entry->crtc = crtc;
+		    __entry->seq = seq;
+		    ),
+	    TP_printk("crtc=%d, seq=%d", __entry->crtc, __entry->seq)
+);
+
+TRACE_EVENT(drm_vblank_event_queued,
+	    TP_PROTO(pid_t pid, int crtc, unsigned int seq),
+	    TP_ARGS(pid, crtc, seq),
+	    TP_STRUCT__entry(
+		    __field(pid_t, pid)
+		    __field(int, crtc)
+		    __field(unsigned int, seq)
+		    ),
+	    TP_fast_assign(
+		    __entry->pid = pid;
+		    __entry->crtc = crtc;
+		    __entry->seq = seq;
+		    ),
+	    TP_printk("pid=%d, crtc=%d, seq=%d", __entry->pid, __entry->crtc, \
+		      __entry->seq)
+);
+
+TRACE_EVENT(drm_vblank_event_delivered,
+	    TP_PROTO(pid_t pid, int crtc, unsigned int seq),
+	    TP_ARGS(pid, crtc, seq),
+	    TP_STRUCT__entry(
+		    __field(pid_t, pid)
+		    __field(int, crtc)
+		    __field(unsigned int, seq)
+		    ),
+	    TP_fast_assign(
+		    __entry->pid = pid;
+		    __entry->crtc = crtc;
+		    __entry->seq = seq;
+		    ),
+	    TP_printk("pid=%d, crtc=%d, seq=%d", __entry->pid, __entry->crtc, \
+		      __entry->seq)
+);
+
+#endif /* _DRM_TRACE_H_ */
+
+/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#include <trace/define_trace.h>

drivers/gpu/drm/drm_trace_points.c

@@ -0,0 +1,4 @@
+#include "drmP.h"
+
+#define CREATE_TRACE_POINTS
+#include "drm_trace.h"

drivers/gpu/drm/i915/i915_trace.h

@@ -262,6 +262,42 @@ DEFINE_EVENT(i915_ring, i915_ring_wait_end,
 	    TP_ARGS(dev)
 );
 
+TRACE_EVENT(i915_flip_request,
+	    TP_PROTO(int plane, struct drm_gem_object *obj),
+
+	    TP_ARGS(plane, obj),
+
+	    TP_STRUCT__entry(
+		    __field(int, plane)
+		    __field(struct drm_gem_object *, obj)
+		    ),
+
+	    TP_fast_assign(
+		    __entry->plane = plane;
+		    __entry->obj = obj;
+		    ),
+
+	    TP_printk("plane=%d, obj=%p", __entry->plane, __entry->obj)
+);
+
+TRACE_EVENT(i915_flip_complete,
+	    TP_PROTO(int plane, struct drm_gem_object *obj),
+
+	    TP_ARGS(plane, obj),
+
+	    TP_STRUCT__entry(
+		    __field(int, plane)
+		    __field(struct drm_gem_object *, obj)
+		    ),
+
+	    TP_fast_assign(
+		    __entry->plane = plane;
+		    __entry->obj = obj;
+		    ),
+
+	    TP_printk("plane=%d, obj=%p", __entry->plane, __entry->obj)
+);
+
 #endif /* _I915_TRACE_H_ */
 
 /* This part must be outside protection */

drivers/gpu/drm/i915/intel_display.c

@@ -33,6 +33,7 @@
 #include "intel_drv.h"
 #include "i915_drm.h"
 #include "i915_drv.h"
+#include "i915_trace.h"
 #include "drm_dp_helper.h"
 
 #include "drm_crtc_helper.h"
@@ -4650,6 +4651,8 @@ static void do_intel_finish_page_flip(struct drm_device *dev,
 	    atomic_dec_and_test(&obj_priv->pending_flip))
 		DRM_WAKEUP(&dev_priv->pending_flip_queue);
 	schedule_work(&work->work);
+
+	trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
 }
 
 void intel_finish_page_flip(struct drm_device *dev, int pipe)
@@ -4781,6 +4784,8 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
 
 	mutex_unlock(&dev->struct_mutex);
 
+	trace_i915_flip_request(intel_crtc->plane, obj);
+
 	return 0;
 }
 

include/drm/drmP.h

@@ -406,6 +406,8 @@ struct drm_pending_event {
 	struct drm_event *event;
 	struct list_head link;
 	struct drm_file *file_priv;
+	pid_t pid; /* pid of requester, no guarantee it's valid by the time
+		      we deliver the event, for tracing only */
 	void (*destroy)(struct drm_pending_event *event);
 };