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 Consider my minor qualms withdrawn, there doesn't seem to be any trouble in this area.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] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
