Re: kthread, signals and PF_FREEZE (suspend)

[Christophe Saout]

Am Mo, den 16.02.2004 schrieb Jamie Lokier um 17:53:

> Rusty Russell wrote:
> > > That means that signal_pending() will return true for that process which
> > > will make kthread stop the thread.
> > 
> > Yes, the way they are currently coded.  I had assumed that spurious
> > signals do not occur.
> 
> Yowch.  Does suspend mean this warning in futex_wait is wrong?
> 
> 	/* A spurious wakeup should never happen. */
> 	WARN_ON(!signal_pending(current));
> 	return -EINTR;

I just tried it on my notebook. It works, no warning.

I don't know how things work exactly. There is some stuff in the arch
signal.c in do_signal that also handles PF_FREEZE.


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