Okay. I'm not really familiar with linux kernel code, or inner details of USB, but I'd like to keep hacking with this. I think I might have a vague idea what's going on. I don't know what you're referring to by "bottom half", could you elaborate a bit?
Is dummy_timer the timer callback function? Also, do you know offhand a good resource for documentation for linux kernel functions? Things like 'mod_timer' I can try to infer their meaning from header files, but that game isn't any fun. I would have guessed it would be in the "linux-manual" man pages but no such luck. Thanks, Joshua On 3/10/07, Alan Stern <[EMAIL PROTECTED]> wrote: > The real problem is that dummy-hcd operates from a kernel timer, meant to > simulate the frames of a real USB bus. Since you want to maximize the > transfer rate, you shouldn't use a kernel timer at all; you should use > sort sort of bottom half instead. > > Making the change shouldn't be too difficult, but it isn't entirely > trivial either. Maybe you can figure out how to do it. The idea is to > change the "kick the scheduler" part at the end of dummy_urb_enqueue() so > that it enables the bottom half instead of modifying the timer (with > appropriate adjustments in other places, of course). > > Alan Stern > > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
