Debugging uninterruptible sleep causing drivers

[Ram]

Hi,
   Would like some advices on how to debug a driver which causes a
processes to go into
uninterruptible sleep.

Am trying to debug a  bug which makes my video driver to go into
an sleep/busywaiting. (when i do 'ps -l' find a 'D' in the stat field).

99% of the time the driver works,

However when i try to run both the video and the audio driver.(streaming
 audio and video)
The video driver sometimes goes into busywaiting/sleep.

My driver contains lots of spinlocks and semaphores. I have no clue on how to
solve this issues.

Please do advice,

Regards,
sriram
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/