linux-kernel - Re: [PATCH 08/10] nvdimm: Add driver for OpenCAPI Storage Class Memory

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Message-Id: <7fd5a4571062a06da8f09f18300794b48ead5dc1.camel@au1.ibm.com>
Date:   Tue, 19 Nov 2019 13:48:26 +1100
From:   "Alastair D'Silva" <alastair@....ibm.com>
To:     Andrew Donnellan <ajd@...ux.ibm.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Frederic Barrat <fbarrat@...ux.ibm.com>
Cc:     Oscar Salvador <osalvador@...e.com>,
        Michal Hocko <mhocko@...e.com>,
        David Hildenbrand <david@...hat.com>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        Wei Yang <richard.weiyang@...il.com>,
        Keith Busch <keith.busch@...el.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Paul Mackerras <paulus@...ba.org>,
        Ira Weiny <ira.weiny@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Dave Jiang <dave.jiang@...el.com>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Mahesh Salgaonkar <mahesh@...ux.vnet.ibm.com>,
        Arnd Bergmann <arnd@...db.de>, Greg Kurz <groug@...d.org>,
        Nicholas Piggin <npiggin@...il.com>, Qian Cai <cai@....pw>,
        Cédric Le Goater <clg@...d.org>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        David Gibson <david@...son.dropbear.id.au>,
        Linux MM <linux-mm@...ck.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH 08/10] nvdimm: Add driver for OpenCAPI Storage Class
 Memory

On Tue, 2019-11-19 at 10:47 +1100, Andrew Donnellan wrote:
> On 15/11/19 3:35 am, Dan Williams wrote:
> > > Have you discussed with the directory owner if it's ok to split
> > > the
> > > driver over several files?
> > 
> > My thought is to establish drivers/opencapi/ and move this and the
> > existing drivers/misc/ocxl/ bits there.
> 
> Is there any other justification for this we can think of apart from
> not 
> wanting to put this driver in the nvdimm directory? OpenCAPI drivers 
> aren't really a category of driver unto themselves.
> 

There is a precedent for bus-based dirs, eg. drivers/(ide|w1|spi) all
contain drivers for both controllers & connected devices.

Fred, how do you feel about moving the generic OpenCAPI driver out of
drivers/misc?

-- 
Alastair D'Silva
Open Source Developer
Linux Technology Centre, IBM Australia
mob: 0423 762 819