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Subject: Re: [PATCH 2/3] mm: Handle numa statistics distinctively based-on
 different VM stats modes
To: Dave Hansen <dave.hansen@linux.intel.com>,
        Michal Hocko <mhocko@kernel.org>
Cc: "Luis R . Rodriguez" <mcgrof@kernel.org>,
        Kees Cook <keescook@chromium.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Jonathan Corbet <corbet@lwn.net>,
        Mel Gorman <mgorman@techsingularity.net>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Christopher Lameter <cl@linux.com>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Vlastimil Babka <vbabka@suse.cz>, Tim Chen <tim.c.chen@intel.com>,
        Andi Kleen <andi.kleen@intel.com>,
        Jesper Dangaard Brouer <brouer@redhat.com>,
        Ying Huang <ying.huang@intel.com>, Aaron Lu <aaron.lu@intel.com>,
        Proc sysctl <linux-fsdevel@vger.kernel.org>,
        Linux MM <linux-mm@kvack.org>,
        Linux Kernel <linux-kernel@vger.kernel.org>
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 <26bd25c8-294f-d3cc-8ba2-845a6da33fe5@intel.com>
 <1bd90605-c765-ca27-b8ee-ca803a8bcdea@linux.intel.com>
From: kemi <kemi.wang@intel.com>
Message-ID: <21090d5e-f8be-731f-75bc-b01bf53409b2@intel.com>
Date: Mon, 18 Sep 2017 13:05:17 +0800
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On 2017年09月18日 12:13, Dave Hansen wrote:
> On 09/17/2017 08:07 PM, kemi wrote:
>>>> +	if (vmstat_mode) {
>>>> +		if (vmstat_mode == VMSTAT_COARSE_MODE)
>>>> +			return;
>>>> +	} else if (disable_zone_statistics)
>>>> +		return;
>>>> +
>>>>  	if (z->node != numa_node_id())
>>>>  		local_stat = NUMA_OTHER;
>>>
>>> A jump label could make this completely out of the way for the case
>>> where every single cycle matters.
>>
>> Could you be more explicit for how to implement it here. Thanks very much.
> 
> Take a look at include/linux/jump_label.h.
> 
> 

Sure, Thanks

>