On Wednesday 14 December 2011 16:37:50 Andriy Gapon wrote: > on 13/12/2011 10:17 Andriy Gapon said the following: > > on 13/12/2011 00:21 Andriy Gapon said the following: > [snip] > > > And in the view of the below data I would like us to revisit this > > problem. I looked over usb code and it seems that all usb threads are > > created with priorities of either USB_PRI_MED or USB_PRI_HIGH, which > > translates to PI_SWI(SWI_CAMBIO) and PI_SWI(SWI_NET). These priorities > > should be in the ithread range, so it's kind of surprising that the init > > thread (with PVM priority) can cause troubles for them. > > So, Hans Petter, do you recall any details of this problem? > I am curious about which thread got starved by which.
From what I know this was 100% reproducible. Remove the ukbd_yield() when at the mountroot prompt. Result: cannot type any keys. No USB devices will enumerate! > > BTW, given your recent improvements to pause(9) what do you think about > further extending it to also use DELAY(9) when kdb_active is set or when > SCHEDULER_STOPPED() is true? I think this is a good idea. It already checks for "cold". USB usually doesn't use this function though when polling. > Then, probably, pause(9) could be used for > both branches in ukbd_do_poll and they could be collapsed together. --HPS _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"