diff options
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-core.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-core.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index a14c428f70e9..4f59b7ec05d0 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -30,6 +30,8 @@ #include <media/v4l2-common.h> #include <media/videobuf2-core.h> +#include <trace/events/v4l2.h> + static int debug; module_param(debug, int, 0644); @@ -1213,6 +1215,8 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) atomic_dec(&q->owned_by_drv_count); spin_unlock_irqrestore(&q->done_lock, flags); + trace_vb2_buf_done(q, vb); + switch (state) { case VB2_BUF_STATE_QUEUED: return; @@ -1639,6 +1643,8 @@ static void __enqueue_in_driver(struct vb2_buffer *vb) vb->state = VB2_BUF_STATE_ACTIVE; atomic_inc(&q->owned_by_drv_count); + trace_vb2_buf_queue(q, vb); + /* sync buffers */ for (plane = 0; plane < vb->num_planes; ++plane) call_void_memop(vb, prepare, vb->planes[plane].mem_priv); @@ -1685,9 +1691,7 @@ static int __buf_prepare(struct vb2_buffer *vb, const struct v4l2_buffer *b) ret = __qbuf_mmap(vb, b); break; case V4L2_MEMORY_USERPTR: - down_read(¤t->mm->mmap_sem); ret = __qbuf_userptr(vb, b); - up_read(¤t->mm->mmap_sem); break; case V4L2_MEMORY_DMABUF: ret = __qbuf_dmabuf(vb, b); @@ -1888,6 +1892,8 @@ static int vb2_internal_qbuf(struct vb2_queue *q, struct v4l2_buffer *b) vb->v4l2_buf.timecode = b->timecode; } + trace_vb2_qbuf(q, vb); + /* * If already streaming, give the buffer to driver for processing. * If not, the buffer will be given to driver on next streamon. @@ -2133,6 +2139,9 @@ static int vb2_internal_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, bool n /* Remove from videobuf queue */ list_del(&vb->queued_entry); q->queued_count--; + + trace_vb2_dqbuf(q, vb); + if (!V4L2_TYPE_IS_OUTPUT(q->type) && vb->v4l2_buf.flags & V4L2_BUF_FLAG_LAST) q->last_buffer_dequeued = true; |