linux-kernel - Re: [PATCHv6 06/10] node: Add memory-side caching attributes

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Message-ID: <CAPcyv4itkDiPYAqkT4e0i8nQXKAEZCUQsFk8jACEJ__tZwUh3Q@mail.gmail.com>
Date:   Fri, 22 Feb 2019 10:20:08 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     Keith Busch <keith.busch@...el.com>
Cc:     Brice Goglin <Brice.Goglin@...ia.fr>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        Linux API <linux-api@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rafael Wysocki <rafael@...nel.org>,
        Dave Hansen <dave.hansen@...el.com>
Subject: Re: [PATCHv6 06/10] node: Add memory-side caching attributes

On Fri, Feb 22, 2019 at 10:09 AM Keith Busch <keith.busch@...el.com> wrote:
>
> On Fri, Feb 22, 2019 at 11:12:38AM +0100, Brice Goglin wrote:
> > Le 14/02/2019 à 18:10, Keith Busch a écrit :
> > > +What:              /sys/devices/system/node/nodeX/memory_side_cache/indexY/size
> > > +Date:              December 2018
> > > +Contact:   Keith Busch <keith.busch@...el.com>
> > > +Description:
> > > +           The size of this memory side cache in bytes.
> >
> >
> > Hello Keith,
> >
> > CPU-side cache size is reported in kilobytes:
> >
> > $ cat
> > /sys/devices/system/cpu/cpu0/cache/index*/size
> >
> > 32K
> > 32K
> > 256K
> > 4096K
> >
> > Can you do the same of memory-side caches instead of reporting bytes?
>
> Ok, will do.

Ugh, please no. Don't optimize sysfs for human consumption. That 'K'
now needs to be parsed.