cregit-Linux how code gets into the kernel

Release 4.12 include/trace/events/v4l2.h


#undef TRACE_SYSTEM

#define TRACE_SYSTEM v4l2

#if !defined(_TRACE_V4L2_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_V4L2_H

#include <linux/tracepoint.h>
#include <media/videobuf2-v4l2.h>

/* Enums require being exported to userspace, for user tool parsing */

#undef EM

#undef EMe

#define EM(a, b)	TRACE_DEFINE_ENUM(a);

#define EMe(a, b)	TRACE_DEFINE_ENUM(a);


#define show_type(type)							\
	__print_symbolic(type, SHOW_TYPE)


#define SHOW_TYPE							\
	EM( V4L2_BUF_TYPE_VIDEO_CAPTURE,        "VIDEO_CAPTURE" )       \
        EM( V4L2_BUF_TYPE_VIDEO_OUTPUT,         "VIDEO_OUTPUT" )        \
        EM( V4L2_BUF_TYPE_VIDEO_OVERLAY,        "VIDEO_OVERLAY" )       \
        EM( V4L2_BUF_TYPE_VBI_CAPTURE,          "VBI_CAPTURE" )         \
        EM( V4L2_BUF_TYPE_VBI_OUTPUT,           "VBI_OUTPUT" )          \
        EM( V4L2_BUF_TYPE_SLICED_VBI_CAPTURE,   "SLICED_VBI_CAPTURE" )  \
        EM( V4L2_BUF_TYPE_SLICED_VBI_OUTPUT,    "SLICED_VBI_OUTPUT" )   \
        EM( V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY, "VIDEO_OUTPUT_OVERLAY" ) \
        EM( V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, "VIDEO_CAPTURE_MPLANE" ) \
        EM( V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,  "VIDEO_OUTPUT_MPLANE" ) \
        EM( V4L2_BUF_TYPE_SDR_CAPTURE,          "SDR_CAPTURE" )         \
        EM( V4L2_BUF_TYPE_SDR_OUTPUT,           "SDR_OUTPUT" )          \
        EM( V4L2_BUF_TYPE_META_CAPTURE,         "META_CAPTURE" )        \
        EMe(V4L2_BUF_TYPE_PRIVATE,              "PRIVATE" )

SHOW_TYPE


#define show_field(field)						\
	__print_symbolic(field, SHOW_FIELD)


#define SHOW_FIELD							\
	EM( V4L2_FIELD_ANY,             "ANY" )                         \
        EM( V4L2_FIELD_NONE,            "NONE" )                        \
        EM( V4L2_FIELD_TOP,             "TOP" )                         \
        EM( V4L2_FIELD_BOTTOM,          "BOTTOM" )                      \
        EM( V4L2_FIELD_INTERLACED,      "INTERLACED" )                  \
        EM( V4L2_FIELD_SEQ_TB,          "SEQ_TB" )                      \
        EM( V4L2_FIELD_SEQ_BT,          "SEQ_BT" )                      \
        EM( V4L2_FIELD_ALTERNATE,       "ALTERNATE" )                   \
        EM( V4L2_FIELD_INTERLACED_TB,   "INTERLACED_TB" )               \
        EMe( V4L2_FIELD_INTERLACED_BT,  "INTERLACED_BT" )

SHOW_FIELD

/*
 * Now redefine the EM() and EMe() macros to map the enums to the strings
 * that will be printed in the output.
 */

#undef EM

#undef EMe

#define EM(a, b)	{a, b},

#define EMe(a, b)	{a, b}

/* V4L2_TC_TYPE_* are macros, not defines, they do not need processing */


#define show_timecode_type(type)					\
	__print_symbolic(type,                                          \
                { V4L2_TC_TYPE_24FPS,           "24FPS" },              \
                { V4L2_TC_TYPE_25FPS,           "25FPS" },              \
                { V4L2_TC_TYPE_30FPS,           "30FPS" },              \
                { V4L2_TC_TYPE_50FPS,           "50FPS" },              \
                { V4L2_TC_TYPE_60FPS,           "60FPS" })


#define show_flags(flags)						      \
	__print_flags(flags, "|",                                             \
                { V4L2_BUF_FLAG_MAPPED,              "MAPPED" },              \
                { V4L2_BUF_FLAG_QUEUED,              "QUEUED" },              \
                { V4L2_BUF_FLAG_DONE,                "DONE" },                \
                { V4L2_BUF_FLAG_KEYFRAME,            "KEYFRAME" },            \
                { V4L2_BUF_FLAG_PFRAME,              "PFRAME" },              \
                { V4L2_BUF_FLAG_BFRAME,              "BFRAME" },              \
                { V4L2_BUF_FLAG_ERROR,               "ERROR" },               \
                { V4L2_BUF_FLAG_TIMECODE,            "TIMECODE" },            \
                { V4L2_BUF_FLAG_PREPARED,            "PREPARED" },            \
                { V4L2_BUF_FLAG_NO_CACHE_INVALIDATE, "NO_CACHE_INVALIDATE" }, \
                { V4L2_BUF_FLAG_NO_CACHE_CLEAN,      "NO_CACHE_CLEAN" },      \
                { V4L2_BUF_FLAG_TIMESTAMP_MASK,      "TIMESTAMP_MASK" },      \
                { V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN,   "TIMESTAMP_UNKNOWN" },   \
                { V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, "TIMESTAMP_MONOTONIC" }, \
                { V4L2_BUF_FLAG_TIMESTAMP_COPY,      "TIMESTAMP_COPY" },      \
                { V4L2_BUF_FLAG_LAST,                "LAST" })


#define show_timecode_flags(flags)					  \
	__print_flags(flags, "|",                                         \
                { V4L2_TC_FLAG_DROPFRAME,       "DROPFRAME" },            \
                { V4L2_TC_FLAG_COLORFRAME,      "COLORFRAME" },           \
                { V4L2_TC_USERBITS_USERDEFINED, "USERBITS_USERDEFINED" }, \
                { V4L2_TC_USERBITS_8BITCHARS,   "USERBITS_8BITCHARS" })

DECLARE_EVENT_CLASS(v4l2_event_class,
	TP_PROTO(int minor, struct v4l2_buffer *buf),

	TP_ARGS(minor, buf),

	TP_STRUCT__entry(
		__field(int, minor)
		__field(u32, index)
		__field(u32, type)
		__field(u32, bytesused)
		__field(u32, flags)
		__field(u32, field)
		__field(s64, timestamp)
		__field(u32, timecode_type)
		__field(u32, timecode_flags)
		__field(u8, timecode_frames)
		__field(u8, timecode_seconds)
		__field(u8, timecode_minutes)
		__field(u8, timecode_hours)
		__field(u8, timecode_userbits0)
		__field(u8, timecode_userbits1)
		__field(u8, timecode_userbits2)
		__field(u8, timecode_userbits3)
		__field(u32, sequence)
	),

	TP_fast_assign(
		__entry->minor = minor;
                __entry->index = buf->index;
                __entry->type = buf->type;
                __entry->bytesused = buf->bytesused;
                __entry->flags = buf->flags;
                __entry->field = buf->field;
                __entry->timestamp = timeval_to_ns(&buf->timestamp);
                __entry->timecode_type = buf->timecode.type;
                __entry->timecode_flags = buf->timecode.flags;
                __entry->timecode_frames = buf->timecode.frames;
                __entry->timecode_seconds = buf->timecode.seconds;
                __entry->timecode_minutes = buf->timecode.minutes;
                __entry->timecode_hours = buf->timecode.hours;
                __entry->timecode_userbits0 = buf->timecode.userbits[0];
                __entry->timecode_userbits1 = buf->timecode.userbits[1];
                __entry->timecode_userbits2 = buf->timecode.userbits[2];
                __entry->timecode_userbits3 = buf->timecode.userbits[3];
                __entry->sequence = buf->sequence;
	),

	TP_printk("minor = %d, index = %u, type = %s, bytesused = %u, "
		  "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->index, show_type(__entry->type),
		  __entry->bytesused,
		  show_flags(__entry->flags),
		  show_field(__entry->field),
		  __entry->timestamp,
		  show_timecode_type(__entry->timecode_type),
		  show_timecode_flags(__entry->timecode_flags),
		  __entry->timecode_frames,
		  __entry->timecode_seconds,
		  __entry->timecode_minutes,
		  __entry->timecode_hours,
		  __entry->timecode_userbits0,
		  __entry->timecode_userbits1,
		  __entry->timecode_userbits2,
		  __entry->timecode_userbits3,
		  __entry->sequence
	)
)

DEFINE_EVENT(v4l2_event_class, v4l2_dqbuf,
	TP_PROTO(int minor, struct v4l2_buffer *buf),
	TP_ARGS(minor, buf)
);

DEFINE_EVENT(v4l2_event_class, v4l2_qbuf,
	TP_PROTO(int minor, struct v4l2_buffer *buf),
	TP_ARGS(minor, buf)
);

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, flags)
                __field(u32, field)
                __field(u64, timestamp)
                __field(u32, timecode_type)
                __field(u32, timecode_flags)
                __field(u8, timecode_frames)
                __field(u8, timecode_seconds)
                __field(u8, timecode_minutes)
                __field(u8, timecode_hours)
                __field(u8, timecode_userbits0)
                __field(u8, timecode_userbits1)
                __field(u8, timecode_userbits2)
                __field(u8, timecode_userbits3)
                __field(u32, sequence)
        ),

	TP_fast_assign(
                struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
                struct v4l2_fh *owner = q->owner;

                __entry->minor = owner ? owner->vdev->minor : -1;
                __entry->flags = vbuf->flags;
                __entry->field = vbuf->field;
                __entry->timestamp = vb->timestamp;
                __entry->timecode_type = vbuf->timecode.type;
                __entry->timecode_flags = vbuf->timecode.flags;
                __entry->timecode_frames = vbuf->timecode.frames;
                __entry->timecode_seconds = vbuf->timecode.seconds;
                __entry->timecode_minutes = vbuf->timecode.minutes;
                __entry->timecode_hours = vbuf->timecode.hours;
                __entry->timecode_userbits0 = vbuf->timecode.userbits[0];
                __entry->timecode_userbits1 = vbuf->timecode.userbits[1];
                __entry->timecode_userbits2 = vbuf->timecode.userbits[2];
                __entry->timecode_userbits3 = vbuf->timecode.userbits[3];
                __entry->sequence = vbuf->sequence;
        ),

	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,
                  show_flags(__entry->flags),
                  show_field(__entry->field),
                  __entry->timestamp,
                  show_timecode_type(__entry->timecode_type),
                  show_timecode_flags(__entry->timecode_flags),
                  __entry->timecode_frames,
                  __entry->timecode_seconds,
                  __entry->timecode_minutes,
                  __entry->timecode_hours,
                  __entry->timecode_userbits0,
                  __entry->timecode_userbits1,
                  __entry->timecode_userbits2,
                  __entry->timecode_userbits3,
                  __entry->sequence
        )
)

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_v4l2_event_class, vb2_v4l2_buf_queue,
	TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
	TP_ARGS(q, vb)
);

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_v4l2_event_class, vb2_v4l2_qbuf,
	TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb),
	TP_ARGS(q, vb)
);

#endif /* if !defined(_TRACE_V4L2_H) || defined(TRACE_HEADER_MULTI_READ) */

/* This part must be outside protection */
#include <trace/define_trace.h>

Overall Contributors

PersonTokensPropCommitsCommitProp
Philipp Zabel39571.04%220.00%
Wade Farnsworth7413.31%110.00%
Steven Rostedt6411.51%110.00%
Junghak Sung213.78%440.00%
Peter Seiderer10.18%110.00%
Laurent Pinchart10.18%110.00%
Total556100.00%10100.00%
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