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On Wed, Jul 31, 2002 at 11:07:21AM +0100, David Woodhouse wrote: > vojtech@suse.cz said: > > Ok. Is the use in drivers/input/serio.c buggy? > > If it matters that the thread can miss wakeup events and sleep indefinitely > while there's a 'SERIO_RESCAN' event pending, then yes it looks buggy. > > serio_thread() serio_rescan() > -------------- -------------- > > serio_handle_events(); > serio->event |= SERIO_RESCAN; > wake_up(&serio_wait); > sleep_on(&serio_wait); > > ...sleeps... > > If both serio_thread() and serio_rescan() hold the BKL you're OK. It looks > like serio_rescan() doesn't, though. Thanks for the explanation. Yes, this could happen. > > What should be it replaced with? > > In general, the response 'anything but sleep_on' is considered appropriate. > Try wait_event(). -- Vojtech Pavlik SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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