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SubjectRe: [PATCH RFC tip/core/rcu 11/11] rcu: move TREE_RCU from softirq to kthread
On Wed, Feb 23, 2011 at 04:09:43AM +0100, Frederic Weisbecker wrote:
> On Tue, Feb 22, 2011 at 05:39:40PM -0800, Paul E. McKenney wrote:
> > +/*
> > + * Set the per-rcu_node kthread's affinity to cover all CPUs that are
> > + * served by the rcu_node in question.
> > + */
> > +static void rcu_node_kthread_setaffinity(struct rcu_node *rnp)
> > +{
> > + cpumask_var_t cm;
> > + int cpu;
> > + unsigned long mask = rnp->qsmaskinit;
> > +
> > + if (rnp->node_kthread_task == NULL ||
> > + rnp->qsmaskinit == 0)
> > + return;
> > + if (!alloc_cpumask_var(&cm, GFP_KERNEL))
> > + return;
> > + cpumask_clear(cm);
> > + for (cpu = rnp->grplo; cpu <= rnp->grphi; cpu++, mask <<= 1)
>
> There seem to be the same shift problem here.

Right you are, thank you again!!!

Thanx, Paul

> > + if (mask & 01)
> > + cpumask_set_cpu(cpu, cm);
> > + set_cpus_allowed_ptr(rnp->node_kthread_task, cm);
> > + free_cpumask_var(cm);
> > +}


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