[media] media: videobuf2: Prepare to divide videobuf2

Prepare to divide videobuf2
- Separate vb2 trace events from v4l2 trace event.
- Make wrapper functions that will move to v4l2-side.
- Make vb2_core_* functions that will remain in core-side.
- Add a callback function table for buffer operation which makes vb2-core
  to be able to invoke a v4l2-side functions.
- Rename internal functions as vb2_*.

Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

2 files changed, 71 insertions, 22 deletions

diff --git a/include/trace/events/v4l2.h b/include/trace/events/v4l2.h
index 375b1a3138c2..04ef89b15ae2 100644
--- a/include/trace/events/v4l2.h
+++ b/include/trace/events/v4l2.h
@@ -175,17 +175,12 @@ DEFINE_EVENT(v4l2_event_class, v4l2_qbuf,
         TP_ARGS(minor, buf)
 );
 
-DECLARE_EVENT_CLASS(vb2_event_class,
+DECLARE_EVENT_CLASS(vb2_v4l2_event_class,
         TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
         TP_ARGS(q, vb),
 
         TP_STRUCT__entry(
                 __field(int, minor)
-                __field(u32, queued_count)
-                __field(int, owned_by_drv_count)
-                __field(u32, index)
-                __field(u32, type)
-                __field(u32, bytesused)
                 __field(u32, flags)
                 __field(u32, field)
                 __field(s64, timestamp)
@@ -207,12 +202,6 @@ DECLARE_EVENT_CLASS(vb2_event_class,
                 struct v4l2_fh *owner = q->owner;
 
                 __entry->minor = owner ? owner->vdev->minor : -1;
-                __entry->queued_count = q->queued_count;
-                __entry->owned_by_drv_count =
-                        atomic_read(&q->owned_by_drv_count);
-                __entry->index = vb->index;
-                __entry->type = vb->type;
-                __entry->bytesused = vb->planes[0].bytesused;
                 __entry->flags = vbuf->flags;
                 __entry->field = vbuf->field;
                 __entry->timestamp = timeval_to_ns(&vbuf->timestamp);
@@ -229,15 +218,10 @@ DECLARE_EVENT_CLASS(vb2_event_class,
                 __entry->sequence = vbuf->sequence;
         ),
 
-        TP_printk("minor = %d, queued = %u, owned_by_drv = %d, index = %u, "
-                  "type = %s, bytesused = %u, flags = %s, field = %s, "
+        TP_printk("minor=%d flags = %s, field = %s, "
                   "timestamp = %llu, timecode = { type = %s, flags = %s, "
                   "frames = %u, seconds = %u, minutes = %u, hours = %u, "
                   "userbits = { %u %u %u %u } }, sequence = %u", __entry->minor,
-                  __entry->queued_count,
-                  __entry->owned_by_drv_count,
-                  __entry->index, show_type(__entry->type),
-                  __entry->bytesused,
                   show_flags(__entry->flags),
                   show_field(__entry->field),
                   __entry->timestamp,
@@ -255,22 +239,22 @@ DECLARE_EVENT_CLASS(vb2_event_class,
         )
 )
 
-DEFINE_EVENT(vb2_event_class, vb2_buf_done,
+DEFINE_EVENT(vb2_v4l2_event_class, vb2_v4l2_buf_done,
         TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
         TP_ARGS(q, vb)
 );
 
-DEFINE_EVENT(vb2_event_class, vb2_buf_queue,
+DEFINE_EVENT(vb2_v4l2_event_class, vb2_v4l2_buf_queue,
         TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
         TP_ARGS(q, vb)
 );
 
-DEFINE_EVENT(vb2_event_class, vb2_dqbuf,
+DEFINE_EVENT(vb2_v4l2_event_class, vb2_v4l2_dqbuf,
         TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
         TP_ARGS(q, vb)
 );
 
-DEFINE_EVENT(vb2_event_class, vb2_qbuf,
+DEFINE_EVENT(vb2_v4l2_event_class, vb2_v4l2_qbuf,
         TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
         TP_ARGS(q, vb)
 );
diff --git a/include/trace/events/vb2.h b/include/trace/events/vb2.h
new file mode 100644
index 000000000000..bfeceeba3744
--- /dev/null
+++ b/include/trace/events/vb2.h
@@ -0,0 +1,65 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM vb2
+
+#if !defined(_TRACE_VB2_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_VB2_H
+
+#include <linux/tracepoint.h>
+#include <media/videobuf2-core.h>
+
+DECLARE_EVENT_CLASS(vb2_event_class,
+        TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
+        TP_ARGS(q, vb),
+
+        TP_STRUCT__entry(
+                __field(void *, owner)
+                __field(u32, queued_count)
+                __field(int, owned_by_drv_count)
+                __field(u32, index)
+                __field(u32, type)
+                __field(u32, bytesused)
+        ),
+
+        TP_fast_assign(
+                __entry->owner = q->owner;
+                __entry->queued_count = q->queued_count;
+                __entry->owned_by_drv_count =
+                        atomic_read(&q->owned_by_drv_count);
+                __entry->index = vb->index;
+                __entry->type = vb->type;
+                __entry->bytesused = vb->planes[0].bytesused;
+        ),
+
+        TP_printk("owner = %p, queued = %u, owned_by_drv = %d, index = %u, "
+                  "type = %u, bytesused = %u", __entry->owner,
+                  __entry->queued_count,
+                  __entry->owned_by_drv_count,
+                  __entry->index, __entry->type,
+                  __entry->bytesused
+        )
+)
+
+DEFINE_EVENT(vb2_event_class, vb2_buf_done,
+        TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
+        TP_ARGS(q, vb)
+);
+
+DEFINE_EVENT(vb2_event_class, vb2_buf_queue,
+        TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
+        TP_ARGS(q, vb)
+);
+
+DEFINE_EVENT(vb2_event_class, vb2_dqbuf,
+        TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
+        TP_ARGS(q, vb)
+);
+
+DEFINE_EVENT(vb2_event_class, vb2_qbuf,
+        TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
+        TP_ARGS(q, vb)
+);
+
+#endif /* if !defined(_TRACE_VB2_H) || defined(TRACE_HEADER_MULTI_READ) */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>