Nevermind about bottom half queues. It hadn't occurred to me that it was a proper noun.
On 3/10/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > 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
