Re: [RFC PATCH v2 0/5] Add hardware prefetch driver for A64FX and Intel processors

[Peter Zijlstra]

On Thu, Nov 04, 2021 at 02:21:17PM +0900, Kohei Tarumizu wrote:
> This patch series add hardware prefetch driver register/unregister
> function. The purpose of this driver is to provide an interface to
> control the hardware prefetch mechanism depending on the application
> characteristics.

Here you talk about applications..

> An earlier RFC[1], we were suggested that we create a hardware
> prefetch directory under /sys/devices/system/cpu/[CPUNUM]/cache.
> Hardware prefetch is a cache-related feature, but it does not require
> cache sysfs feature. Therefore, we decided to isolate the code.
> Specifically, create a directory under cpu/[CPUNUM].

Here you talk about CPUs..

How does that work?