Re: Q: wait_task_inactive() and !CONFIG_SMP && CONFIG_PREEMPT

[Linus Torvalds]

On Sun, 27 Jul 2008, Oleg Nesterov wrote:
>
> Without CONFIG_SMP wait_task_inactive() is noop, this doesn't look right.
> Shouldn't we also take CONFIG_PREEMPT into account?

The exit path had _better_ be non-preemptable until it hits the final 
schedule that disables it (and that wait_task_inactive() was waiting for). 
At least that used to be the rule.

Of course, historically the only user for this was just the "wait for 
exit to complete" case. And that isn't really true any more, I guess. So I 
dunno.

		Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/