Re: [PATCH 2/3] mm: Handle numa statistics distinctively based-on different VM stats modes

[Dave Hansen]

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.