Re: rt14: strace -> migrate_disable_atomic imbalance

Peter Zijlstra
2011-09-22T08:39:20Z

On Wed, 2011-09-21 at 20:50 +0200, Peter Zijlstra wrote:
> +static void wait_task_inactive_sched_out(struct preempt_notifier *n,
> + struct task_struct *next)
> +{
> + struct task_struct *p;
> + struct wait_task_inactive_blocked *blocked =
> + container_of(n, struct wait_task_inactive_blocked, notifier);
> +
> + if (current->on_rq) /* we're not inactive yet */
> + return;
> +
> + hlist_del(&n->link);
> +
> + p = ACCESS_ONCE(blocked->waiter);
> + blocked->waiter = NULL;
> + wake_up_process(p);
> +}

Trying a wakeup from there isn't going to actually ever work of-course..
Duh!