On 05/14/2013 11:17 PM, Tejun Heo wrote:
> On Tue, May 14, 2013 at 08:25:20PM +0800, Chen Gang wrote:
>>
>> When NUMA node mapping not available for one cpu, need disabling NUMA
>> support and proceed.
>>
>> Also better to release unused resources (the original code can not
>> cause issue, only waste some memory).
>>
>>
>> Signed-off-by: Chen Gang <gang.c...@asianux.com>
>> ---
>> kernel/workqueue.c | 3 +++
>> 1 file changed, 3 insertions(+)
>>
>> diff --git a/kernel/workqueue.c b/kernel/workqueue.c
>> index 1ae6028..a763079 100644
>> --- a/kernel/workqueue.c
>> +++ b/kernel/workqueue.c
>> @@ -4911,6 +4911,9 @@ static void __init wq_numa_init(void)
>> if (WARN_ON(node == NUMA_NO_NODE)) {
>> pr_warn("workqueue: NUMA node mapping not available for
>> cpu%d, disabling NUMA support\n", cpu);
>> /* happens iff arch is bonkers, let's just proceed */
>> + for_each_node(node)
>> + free_cpumask_var(tbl[node]);
>> + kfree(tbl);
>
> Eh... let's just leave it alone. The path is taken iff the whole
> thing is seriously broken and we're triggering WARN. I don't think we
> need to worry about small memory wastage there.
>
> Thanks.
>
OK, I can understand. I will continue to try to find and make another
patches.
Thanks.
--
Chen Gang
Asianux Corporation
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