On 04/06/2015 11:53 PM, Tejun Heo wrote: > On Thu, Apr 02, 2015 at 07:14:42PM +0800, Lai Jiangshan wrote: >> /* make a copy of @attrs and sanitize it */ >> copy_workqueue_attrs(new_attrs, attrs); >> - cpumask_and(new_attrs->cpumask, new_attrs->cpumask, >> wq_unbound_global_cpumask); >> + copy_workqueue_attrs(pwq_attrs, attrs); >> + cpumask_and(new_attrs->cpumask, new_attrs->cpumask, cpu_possible_mask); >> + cpumask_and(pwq_attrs->cpumask, pwq_attrs->cpumask, unbound_cpumask); > > Hmmm... why do we need to keep track of both cpu_possible_mask and > unbound_cpumask? Can't we just make unbound_cpumask replace > cpu_possible_mask for unbound workqueues? >
I want to save the original user-setting cpumask. When any time the wq_unbound_global_cpumask is changed, the new effective cpumask is the-original-user-setting-cpumask & wq_unbound_global_cpumask instead of the-last-effective-cpumask & wq_unbound_global_cpumask. thanks, Lai > Thanks. > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/