linux-kernel - RE: [RFC PATCH v2 0/5] Add hardware prefetch driver for A64FX and Intel processors

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Message-ID: <OSBPR01MB2037B293667A782CEC31C8D9809B9@OSBPR01MB2037.jpnprd01.prod.outlook.com>
Date:   Thu, 18 Nov 2021 07:09:53 +0000
From:   "tarumizu.kohei@...itsu.com" <tarumizu.kohei@...itsu.com>
To:     'Borislav Petkov' <bp@...en8.de>
CC:     "'catalin.marinas@....com'" <catalin.marinas@....com>,
        "'will@...nel.org'" <will@...nel.org>,
        "'tglx@...utronix.de'" <tglx@...utronix.de>,
        "'mingo@...hat.com'" <mingo@...hat.com>,
        "'dave.hansen@...ux.intel.com'" <dave.hansen@...ux.intel.com>,
        "'x86@...nel.org'" <x86@...nel.org>,
        "'hpa@...or.com'" <hpa@...or.com>,
        "'linux-arm-kernel@...ts.infradead.org'" 
        <linux-arm-kernel@...ts.infradead.org>,
        "'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>
Subject: RE: [RFC PATCH v2 0/5] Add hardware prefetch driver for A64FX and
 Intel processors

> Does it make sense to create sysfs directories as below?
> 
> * For Intel MSR
> /.../index0/prefetcher/hwpf/enable
> /.../index0/prefetcher/ippf/enable
> /.../index2/prefetcher/hwpf/enable
> /.../index2/prefetcher/aclpf/enable
> 
> * For A64FX
> /.../index[0,2]/prefetcher/hwpf/enable
> /.../index[0,2]/prefetcher/hwpf/dist
> /.../index[0,2]/prefetcher/hwpf/strong

There was a mistake in the attribute file name. The following is
correct.

* For Intel MSR
/.../index0/prefetcher/hwpf/disable
/.../index0/prefetcher/ippf/disable
/.../index2/prefetcher/hwpf/disable
/.../index2/prefetcher/aclpf/disable

* For A64FX
/.../index[0,2]/prefetcher/hwpf/disable
/.../index[0,2]/prefetcher/hwpf/dist
/.../index[0,2]/prefetcher/hwpf/strong