On Mon, Apr 07, 2014 at 09:30:30AM +0200, Mike Galbraith wrote:
> - double_lock(&my_grp->lock, &grp->lock);
> + BUG_ON(irqs_disabled());
> + double_lock_irq(&my_grp->lock, &grp->lock);
So either make this:
local_irq_disable();
double_lock();
or
>
> for (i = 0; i < NR_NUMA_HINT_FAULT_STATS * nr_node_ids; i++) {
> my_grp->faults[i] -= p->numa_faults_memory[i];
> @@ -1692,6 +1693,7 @@ static void task_numa_group(struct task_
>
> spin_unlock(&my_grp->lock);
> spin_unlock(&grp->lock);
> + local_irq_enable();
use:
spin_unlock()
spin_unlock_irq()
or so, but this imbalance is making my itch :-)
>
> rcu_assign_pointer(p->numa_group, grp);
>
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