Re: [PATCH v1] mm: Add configuration to control whether vmpressure notifier is enabled

[Chris Down]

yongw.pur@xxxxxxxxx writes:
> From: wangyong <wang.yong12@xxxxxxxxxx>
> Inspired by PSI features, vmpressure inotifier function should also be
> configured to decide whether it is used, because it is an independent
> feature which notifies the user of memory pressure.
>
> Since the vmpressure interface is used in kernel common code, for
> users who do not use the vmpressure function, there will be
> additional overhead.

Could you please demonstrate this additional overhead with profiles or 
demonstrations of other real world effects? Thanks.