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drm/virtio: add trace events for commands

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

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190429220825.156644-3-olvaffe@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Chia-I Wu
2019-04-29 15:08:25 -07:00
committed by Gerd Hoffmann
parent 48ad7751db
commit 5daf8857c9
4 changed files with 68 additions and 1 deletions
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10
drivers/gpu/drm/virtio/virtgpu_vq.c
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@@ -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 @@ retry:
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 @@ retry:
spin_lock(&vgdev->cursorq.qlock);
goto retry;
} else {
trace_virtio_gpu_cmd_queue(vq,
(struct virtio_gpu_ctrl_hdr *)vbuf->buf);
virtqueue_kick(vq);
}