A couple of days ago I said:
> The cafe_ccic (OLPC) camera driver uses a tasklet to move frames out of
> the DMA buffers in the streaming I/O path....
>
> Obviously some testing is called for here. I will make an attempt to do
> that testing
I've done that testing - I have an OLPC B3 unit running V2 of the
tasklet->workqueue patch, and all seems well. 30 FPS to the display and
no dropped frames. The tasklets/0 process is running 3-5% CPU, in case
that's interesting. For whatever reason, I see about 3% *more* idle
time when running just mplayer than I did without the patch.
Consider my minor qualms withdrawn, there doesn't seem to be any trouble
in this area.
Thanks,
jon
Jonathan Corbet / LWN.net / [email protected]
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