netdev - Re: [PATCH v2 1/6] Add ancillary bus support

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Date:   Tue, 6 Oct 2020 22:20:36 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     "Saleem, Shiraz" <shiraz.saleem@...el.com>
Cc:     Parav Pandit <parav@...dia.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        "Ertman, David M" <david.m.ertman@...el.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "parav@...lanox.com" <parav@...lanox.com>,
        "tiwai@...e.de" <tiwai@...e.de>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "ranjani.sridharan@...ux.intel.com" 
        <ranjani.sridharan@...ux.intel.com>,
        "fred.oh@...ux.intel.com" <fred.oh@...ux.intel.com>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "dledford@...hat.com" <dledford@...hat.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        Jason Gunthorpe <jgg@...dia.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "Williams, Dan J" <dan.j.williams@...el.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "Patil, Kiran" <kiran.patil@...el.com>
Subject: Re: [PATCH v2 1/6] Add ancillary bus support

On Tue, Oct 06, 2020 at 05:41:00PM +0000, Saleem, Shiraz wrote:
> > Subject: Re: [PATCH v2 1/6] Add ancillary bus support
> >
> > On Tue, Oct 06, 2020 at 05:09:09PM +0000, Parav Pandit wrote:
> > >
> > > > From: Leon Romanovsky <leon@...nel.org>
> > > > Sent: Tuesday, October 6, 2020 10:33 PM
> > > >
> > > > On Tue, Oct 06, 2020 at 10:18:07AM -0500, Pierre-Louis Bossart wrote:
> > > > > Thanks for the review Leon.
> > > > >
> > > > > > > Add support for the Ancillary Bus, ancillary_device and ancillary_driver.
> > > > > > > It enables drivers to create an ancillary_device and bind an
> > > > > > > ancillary_driver to it.
> > > > > >
> > > > > > I was under impression that this name is going to be changed.
> > > > >
> > > > > It's part of the opens stated in the cover letter.
> > > >
> > > > ok, so what are the variants?
> > > > system bus (sysbus), sbsystem bus (subbus), crossbus ?
> > > Since the intended use of this bus is to
> > > (a) create sub devices that represent 'functional separation' and
> > > (b) second use case for subfunctions from a pci device,
> > >
> > > I proposed below names in v1 of this patchset.
> > >
> > > (a) subdev_bus
> >
> > It sounds good, just can we avoid "_" in the name and call it subdev?
> >
>
> What is wrong with naming the bus 'ancillary bus'? I feel it's a fitting name.
> An ancillary software bus for ancillary devices carved off a parent device registered on a primary bus.

Greg summarized it very well, every internal conversation about this patch
with my colleagues (non-english speakers) starts with the question:
"What does ancillary mean?"
https://lore.kernel.org/alsa-devel/20201001071403.GC31191@kroah.com/

"For non-native english speakers this is going to be rough,
given that I as a native english speaker had to go look up
the word in a dictionary to fully understand what you are
trying to do with that name."

Thanks

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