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Commit 5daf8857 authored by Chia-I Wu's avatar Chia-I Wu Committed by Gerd Hoffmann
Browse files

drm/virtio: add trace events for commands 



Trace when commands are queued for both ctrlq and cursorq.  Trace
when responses are received for ctrlq.

Signed-off-by: default avatarChia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190429220825.156644-3-olvaffe@gmail.com


Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent 48ad7751

drivers/gpu/drm/virtio/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -6,6 +6,6 @@ 
virtio-gpu-y := virtgpu_drv.o virtgpu_kms.o virtgpu_gem.o \

	virtgpu_fb.o virtgpu_display.o virtgpu_vq.o virtgpu_ttm.o \

	virtgpu_fence.o virtgpu_object.o virtgpu_debugfs.o virtgpu_plane.o \

	virtgpu_ioctl.o virtgpu_prime.o

	virtgpu_ioctl.o virtgpu_prime.o virtgpu_trace_points.o



obj-$(CONFIG_DRM_VIRTIO_GPU) += virtio-gpu.o

drivers/gpu/drm/virtio/virtgpu_trace.h

0 → 100644
+52 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#if !defined(_VIRTGPU_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)

#define _VIRTGPU_TRACE_H_



#include <linux/tracepoint.h>



#undef TRACE_SYSTEM

#define TRACE_SYSTEM virtio_gpu

#define TRACE_INCLUDE_FILE virtgpu_trace



DECLARE_EVENT_CLASS(virtio_gpu_cmd,

	TP_PROTO(struct virtqueue *vq, struct virtio_gpu_ctrl_hdr *hdr),

	TP_ARGS(vq, hdr),

	TP_STRUCT__entry(

			 __field(int, dev)

			 __field(unsigned int, vq)

			 __field(const char *, name)

			 __field(u32, type)

			 __field(u32, flags)

			 __field(u64, fence_id)

			 __field(u32, ctx_id)

			 ),

	TP_fast_assign(

		       __entry->dev = vq->vdev->index;

		       __entry->vq = vq->index;

		       __entry->name = vq->name;

		       __entry->type = le32_to_cpu(hdr->type);

		       __entry->flags = le32_to_cpu(hdr->flags);

		       __entry->fence_id = le64_to_cpu(hdr->fence_id);

		       __entry->ctx_id = le32_to_cpu(hdr->ctx_id);

		       ),

	TP_printk("vdev=%d vq=%u name=%s type=0x%x flags=0x%x fence_id=%llu ctx_id=%u",

		  __entry->dev, __entry->vq, __entry->name,

		  __entry->type, __entry->flags, __entry->fence_id,

		  __entry->ctx_id)

);



DEFINE_EVENT(virtio_gpu_cmd, virtio_gpu_cmd_queue,

	TP_PROTO(struct virtqueue *vq, struct virtio_gpu_ctrl_hdr *hdr),

	TP_ARGS(vq, hdr)

);



DEFINE_EVENT(virtio_gpu_cmd, virtio_gpu_cmd_response,

	TP_PROTO(struct virtqueue *vq, struct virtio_gpu_ctrl_hdr *hdr),

	TP_ARGS(vq, hdr)

);



#endif



#undef TRACE_INCLUDE_PATH

#define TRACE_INCLUDE_PATH ../../drivers/gpu/drm/virtio

#include <trace/define_trace.h>

drivers/gpu/drm/virtio/virtgpu_trace_points.c

0 → 100644
+5 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include "virtgpu_drv.h"



#define CREATE_TRACE_POINTS

#include "virtgpu_trace.h"

drivers/gpu/drm/virtio/virtgpu_vq.c

+10 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 


#include <drm/drmP.h>

#include "virtgpu_drv.h"

#include "virtgpu_trace.h"

#include <linux/virtio.h>

#include <linux/virtio_config.h>

#include <linux/virtio_ring.h>
@@ -192,6 +193,9 @@ void virtio_gpu_dequeue_ctrl_func(struct work_struct *work) 


	list_for_each_entry_safe(entry, tmp, &reclaim_list, list) {

		resp = (struct virtio_gpu_ctrl_hdr *)entry->resp_buf;



		trace_virtio_gpu_cmd_response(vgdev->ctrlq.vq, resp);



		if (resp->type != cpu_to_le32(VIRTIO_GPU_RESP_OK_NODATA)) {

			if (resp->type >= cpu_to_le32(VIRTIO_GPU_RESP_ERR_UNSPEC)) {

				struct virtio_gpu_ctrl_hdr *cmd;
@@ -284,6 +288,9 @@ static int virtio_gpu_queue_ctrl_buffer_locked(struct virtio_gpu_device *vgdev, 
		spin_lock(&vgdev->ctrlq.qlock);

		goto retry;

	} else {

		trace_virtio_gpu_cmd_queue(vq,

			(struct virtio_gpu_ctrl_hdr *)vbuf->buf);



		virtqueue_kick(vq);

	}
@@ -359,6 +366,9 @@ static int virtio_gpu_queue_cursor(struct virtio_gpu_device *vgdev, 
		spin_lock(&vgdev->cursorq.qlock);

		goto retry;

	} else {

		trace_virtio_gpu_cmd_queue(vq,

			(struct virtio_gpu_ctrl_hdr *)vbuf->buf);



		virtqueue_kick(vq);

	}