From: Yunsheng Lin <linyunsheng@huawei.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: <catalin.marinas@arm.com>, <will@kernel.org>, <mingo@redhat.com>,
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Subject: Re: [PATCH v4] numa: make node_to_cpumask_map() NUMA_NO_NODE aware
Date: Mon, 16 Sep 2019 20:55:01 +0800 [thread overview]
Message-ID: <c3a90839-703e-718a-a489-9905e52bbc46@huawei.com> (raw)
In-Reply-To: <20190916122359.GG10231@dhcp22.suse.cz>
On 2019/9/16 20:23, Michal Hocko wrote:
> On Mon 16-09-19 20:07:22, Yunsheng Lin wrote:
> [...]
>>>> @@ -861,9 +861,12 @@ void numa_remove_cpu(int cpu)
>>>> */
>>>> const struct cpumask *cpumask_of_node(int node)
>>>> {
>>>> - if (node >= nr_node_ids) {
>>>> + if (node == NUMA_NO_NODE)
>>>> + return cpu_online_mask;
>>>> +
>>>> + if ((unsigned int)node >= nr_node_ids) {
>>>> printk(KERN_WARNING
>>>> - "cpumask_of_node(%d): node > nr_node_ids(%u)\n",
>>>> + "cpumask_of_node(%d): node >= nr_node_ids(%u)\n",
>>>> node, nr_node_ids);
>>>> dump_stack();
>>>> return cpu_none_mask;
>>>
>>> Why do we need this?
>>
>> As the commit log says, the above cpumask_of_node() is for debugging,
>> it should catch other "node < 0" cases except NUMA_NO_NODE.
>
> OK, I would just make it a separate patch.
Ok, thanks.
>
prev parent reply other threads:[~2019-09-16 12:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-15 8:20 Yunsheng Lin
2019-09-16 8:43 ` Michal Hocko
2019-09-16 12:07 ` Yunsheng Lin
2019-09-16 12:23 ` Michal Hocko
2019-09-16 12:55 ` Yunsheng Lin [this message]
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