On 2022/5/17 16:21, John Garry wrote: > On 17/05/2022 09:09, Yicong Yang wrote: >>>> + target = cpumask_any(cpumask_of_node(dev_to_node(&hisi_ptt->pdev->dev))); >>>> + if (target < nr_cpumask_bits) { >>> the comment for cpumask_any() hints to check against nr_cpu_ids - any specific reason to check against nr_cpumask_bits? >>> >> here should be: >> if (target >= nr_cpumask_bits) { >> >> will fix this up. >> > > I am still not sure that using nr_cpumask_bits is correct. Let's use nr_cpu_ids to match the comment of cpumask_any(). Actually we should have nr_cpu_ids(possible cpus, init to NR_CPUS) <= nr_cpumask_bits (NR_CPUS) so it's ok here.