Messages in this thread |  | | Date | Wed, 22 Nov 2000 22:22:01 +1100 | From | Andrew Morton <> | Subject | Re: hardcoded HZ in hub.c |
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David Woodhouse wrote: > > johannes@erdfelt.com said: > > Multiple seconds in the worst case. > > Well, I think the PCMCIA socket drivers would be happy with that. Depends > what akpm also added to the list of tasks,
Nothing which sleeps for very long - mainly serial drivers which queue a call to tty_hangup(), which immediately queues _another_ tq_scheduler call to do_tty_hangup (Why? Heaven knows).
> and whether Linus actually puts > that patch into test12.
tq_scheduler is a bug. You can't sleep, you can't call copy_*_user, you can't call kmalloc non-atomically. But we do do these things. Really the only reason for using tq_scheduler is so you can acquire the tasklist_lock or the files_lock. schedule_task() is fine for that.
tq_scheduler must die. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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