Re: [PATCH v7 2/3] sched/task: Add the put_task_struct_atomic_safe() function

[Peter Zijlstra]

On Thu, May 04, 2023 at 11:55:15AM -0300, Wander Lairson Costa wrote:

> > Then I'm thinking something trivial like so:
> >
> > static inline void put_task_struct(struct task_struct *t)
> > {
> >         if (!refcount_dec_and_test(&t->usage))
> >                 return;
> >
> >         if (IS_ENABLED(CONFIG_PREEMPT_RT) && !preemptible())
> >                 call_rcu(&t->rcu, __put_task_struct_rcu);
> >
> >         __put_task_struct(t);
> > }
> >
> 
> That's what v5 [1] does. What would be the path in this case? Should I
> resend it as v8?

It's almost what v5 does. v5 also has a !in_task() thing. v5 also
violates codingstyle :-)

But yeah.. something like that.