diff options
| author | Mike Isely <isely@pobox.com> | 2008-03-28 05:34:45 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-04-24 14:09:47 -0300 |
| commit | ad0992e97c5416e431e19dcfd4f6c84448dc1bc2 (patch) | |
| tree | ea90956680289c0797b715422e9d1c889f38f3d5 /drivers/media/video/pvrusb2/pvrusb2-hdw.c | |
| parent | be9cbb7c559eddea19604abafb89faf9c8666715 (diff) | |
V4L/DVB (7699): pvrusb2: Implement statistics for USB I/O performance / tracking
Implement a mechanism in the pvrusb2 driver for gathering statistics
on the stream buffering, including bytes transferred, buffers handled,
buffers in flight, etc. This is useful for debugging certain classes
of streaming issues and for determining if the buffer pool size is
generally correct for the driver.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-hdw.c')
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-hdw.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c index 16c7df9c093f..a26b5251ec1b 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c +++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c @@ -3806,6 +3806,24 @@ static unsigned int pvr2_hdw_report_unlocked(struct pvr2_hdw *hdw,int which, buf,acnt, "state: %s", pvr2_get_state_name(hdw->master_state)); + case 4: { + struct pvr2_stream_stats stats; + if (!hdw->vid_stream) break; + pvr2_stream_get_stats(hdw->vid_stream, + &stats, + 0); + return scnprintf( + buf,acnt, + "Bytes streamed=%u" + " URBs: queued=%u idle=%u ready=%u" + " processed=%u failed=%u", + stats.bytes_processed, + stats.buffers_in_queue, + stats.buffers_in_idle, + stats.buffers_in_ready, + stats.buffers_processed, + stats.buffers_failed); + } default: break; } return 0; |