On Sun, 2012-02-05 at 20:31 +0100, Oleg Nesterov wrote:
> Damn. Sorry for noise...
>
> On 02/05, Oleg Nesterov wrote:
> >
> > +int force_sig_info(int sig, struct siginfo *info, struct task_struct *t)
> > +{
> > +#ifdef CONFIG_PREEMPT_RT_FULL
> > + if (in_atomic()) {
> > + if (WARN_ON_ONCE(t != current))
>
> This is certainly wrong in upstream kernel. It does use force_
> this way although it shouldn't imho.
It's wrong in upstream even with the #ifdef define here?
>
> But _probably_ this is fine for rt? We are going to take the mutex,
> we shouldn't do this in atomic context. But, once again, I do not
> really know what in_atomic() means in rt.
in_atomic() is the same in rt as in mainline. It should still work.
-- Steve
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