On 02/14, Srivatsa Vaddagiri wrote:
>
> On Wed, Feb 14, 2007 at 08:13:05PM +0530, Gautham R Shenoy wrote:
> > + switch (action) {
> > + case CPU_UP_PREPARE:
> > + /* Create a new workqueue thread for it. */
> > + list_for_each_entry(wq, &workqueues, list) {
>
> Its probably safe to take the workqueue (spin) lock here (and other
> notifiers as well), before traversing the list.
We can't fork() under spin lock.
>
> > + cwq = per_cpu_ptr(wq->cpu_wq, hotcpu);
> > + if (create_workqueue_thread(cwq, hotcpu)) {
> > + printk("workqueue for %i failed\n", hotcpu);
> > + return NOTIFY_BAD;
> > + }
> > + }
> > + break;
Oleg.
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