linux-kernel - Re: WARNING at kernel/workqueue.c:829 wq_worker_waking

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Message-ID: <5306BB2E.7010007@intel.com>
Date:	Fri, 21 Feb 2014 10:34:22 +0800
From:	Lan Tianyu <tianyu.lan@...el.com>
To:	Oleg Nesterov <oleg@...hat.com>
CC:	Jiri Olsa <jolsa@...hat.com>, Tejun Heo <tj@...nel.org>,
	Zhang Rui <rui.zhang@...el.com>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: WARNING at kernel/workqueue.c:829 wq_worker_waking_up+0x53/0x70()

On 02/20/2014 11:17 PM, Oleg Nesterov wrote:
> On 02/20, Oleg Nesterov wrote:
>>
>> On 02/20, Lan Tianyu wrote:
>>>
>>> @@ -1096,7 +1112,6 @@ int acpi_processor_set_throttling(struct acpi_processor *pr,
>>>   		return -ENODEV;
>>>   	}
>>>
>>> -	cpumask_copy(saved_mask, &current->cpus_allowed);
>>
>> Yes, but the patch forgets to kill alloc_cpumask_var(&saved_mask)
>> and saved_mask itself ;
>
> And it seems that acpi_processor_set_throttling() doesn't need
> online_throttling_cpus at all. It could use
> for_each_cpu_and(cpu_online_mask, p_throttling->shared_cpu_map).
>


Yes, oops and will update soon. Thanks.


> Oleg.
>


-- 
Best Regards
Tianyu Lan
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