Re: doublefault debugging (was Re: Linux v2.5.62 --- spontaneous reboots)

From: Linus Torvalds (torvalds@transmeta.com)
Date: Fri Feb 21 2003 - 10:05:47 EST


On Fri, 21 Feb 2003, Ingo Molnar wrote:
> >
> > This is a single non-serializing bit test, and if it means that the task
> > counters are _right_, that's definitely the right thing to do.
>
> ok. Plus the wait_task_inactive() stuff was always a bit volatile. Now we
> could in fact remove it from release_task(), right?

Yes, except for the same concerns I had about your patch moving it.

That part could be cleanly solvged by just moving a lot of the tear-down
of the "struct task_struct" entirely into "__put_task_struct()" (which now
can never be called with "current == tsk"), ie if we do the "free_user()"
_there_, then I think we can remove the wait_task_inactive() entirely from
the wait path.

                Linus

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