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Commit ac2874b9 authored by Jesse Barnes's avatar Jesse Barnes Committed by Dave Airlie
Browse files

drm: add vblank event trace point 



Emit a trace point for vblank events.  This can be helpful for mapping
drawing activity against the vblank frequency and period.

Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 97e02140

drivers/gpu/drm/Makefile

+4 −1
Original line number Diff line number Diff line
@@ -11,7 +11,8 @@ 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_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
@@ -19,6 +20,8 @@ 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

+3 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ 
 */



#include "drmP.h"

#include "drm_trace.h"



#include <linux/interrupt.h>	/* For task queue support */

#include <linux/slab.h>
@@ -754,6 +755,8 @@ void drm_handle_vblank_events(struct drm_device *dev, int crtc) 
	}



	spin_unlock_irqrestore(&dev->event_lock, flags);



	trace_drm_vblank_event(crtc, seq);

}



/**

drivers/gpu/drm/drm_trace.h

0 → 100644
+37 −0
Original line number Diff line number Diff line 
#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)

);



#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 → 100644
+4 −0
Original line number Diff line number Diff line 
#include "drmP.h"



#define CREATE_TRACE_POINTS

#include "drm_trace.h"