linux-kernel - Re: [PATCH v2 3/5] cgroup, memcg: move cgroup

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Date:	Tue, 6 Aug 2013 10:21:06 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	<hannes@...xchg.org>, <mhocko@...e.cz>, <bsingharora@...il.com>,
	<kamezawa.hiroyu@...fujitsu.com>, <cgroups@...r.kernel.org>,
	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/5] cgroup, memcg: move cgroup_event implementation
 to memcg

On 2013/8/6 10:02, Li Zefan wrote:
>>  static struct cftype mem_cgroup_files[] = {
>>  	{
>>  		.name = "usage_in_bytes",
>> @@ -5973,6 +6192,12 @@ static struct cftype mem_cgroup_files[] = {
>>  		.read_u64 = mem_cgroup_hierarchy_read,
>>  	},
>>  	{
>> +		.name = "cgroup.event_control",
>> +		.write_string = cgroup_write_event_control,
>> +		.flags = CFTYPE_NO_PREFIX,
>> +		.mode = S_IWUGO,
>> +	},
> 
> One of the misdesign of cgroup eventfd is, cgroup.event_control is
> totally redunant...
> 

ok. write_string() is needed to accept arguments and pass them to
the event register function. still not good.

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