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Date:   Wed, 10 Feb 2021 18:09:55 +0000
From:   "Chen, Mike Ximing" <mike.ximing.chen@...el.com>
To:     "Williams, Dan J" <dan.j.williams@...el.com>,
        Greg KH <gregkh@...uxfoundation.org>
CC:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: RE: [PATCH v10 01/20] dlb: add skeleton for DLB driver



> -----Original Message-----
> From: Dan Williams <dan.j.williams@...el.com>
> Sent: Tuesday, February 9, 2021 11:30 AM
> To: Greg KH <gregkh@...uxfoundation.org>
> Cc: Chen, Mike Ximing <mike.ximing.chen@...el.com>; Linux Kernel Mailing List
> <linux-kernel@...r.kernel.org>; Arnd Bergmann <arnd@...db.de>; Pierre-Louis
> Bossart <pierre-louis.bossart@...ux.intel.com>; Gage Eads <gage.eads@...el.com>
> Subject: Re: [PATCH v10 01/20] dlb: add skeleton for DLB driver
> 
> On Tue, Feb 9, 2021 at 5:36 AM Greg KH <gregkh@...uxfoundation.org> wrote:
> >
> > On Wed, Jan 27, 2021 at 04:56:22PM -0600, Mike Ximing Chen wrote:
> > > Add basic driver functionality (load, unload, probe, and remove callbacks)
> > > for the DLB driver.
> > >
> > > Add documentation which describes in detail the hardware, the user
> > > interface, device interrupts, and the driver's power-management strategy.
> > > For more details about the driver see the documentation in the patch.
> > >
> > > Add a DLB entry to the MAINTAINERS file.
> > >
> > > Signed-off-by: Gage Eads <gage.eads@...el.com>
> > > Signed-off-by: Mike Ximing Chen <mike.ximing.chen@...el.com>
> > > Reviewed-by: Magnus Karlsson <magnus.karlsson@...el.com>
> > > Reviewed-by: Dan Williams <dan.j.williams@...el.com>
> > > ---
> > >  Documentation/misc-devices/dlb.rst   | 259 +++++++++++++++++++++++++++
> > >  Documentation/misc-devices/index.rst |   1 +
> > >  MAINTAINERS                          |   8 +
> > >  drivers/misc/Kconfig                 |   1 +
> > >  drivers/misc/Makefile                |   1 +
> > >  drivers/misc/dlb/Kconfig             |  18 ++
> > >  drivers/misc/dlb/Makefile            |   9 +
> > >  drivers/misc/dlb/dlb_hw_types.h      |  32 ++++
> > >  drivers/misc/dlb/dlb_main.c          | 156 ++++++++++++++++
> > >  drivers/misc/dlb/dlb_main.h          |  37 ++++
> > >  10 files changed, 522 insertions(+)
> > >  create mode 100644 Documentation/misc-devices/dlb.rst
> > >  create mode 100644 drivers/misc/dlb/Kconfig
> > >  create mode 100644 drivers/misc/dlb/Makefile
> > >  create mode 100644 drivers/misc/dlb/dlb_hw_types.h
> > >  create mode 100644 drivers/misc/dlb/dlb_main.c
> > >  create mode 100644 drivers/misc/dlb/dlb_main.h
> > >
> > > diff --git a/Documentation/misc-devices/dlb.rst b/Documentation/misc-
> devices/dlb.rst
> > > new file mode 100644
> > > index 000000000000..aa79be07ee49
> > > --- /dev/null
> > > +++ b/Documentation/misc-devices/dlb.rst
> > > @@ -0,0 +1,259 @@
> > > +.. SPDX-License-Identifier: GPL-2.0-only
> > > +
> > > +===========================================
> > > +Intel(R) Dynamic Load Balancer Overview
> > > +===========================================
> > > +
> > > +:Authors: Gage Eads and Mike Ximing Chen
> > > +
> > > +Contents
> > > +========
> > > +
> > > +- Introduction
> > > +- Scheduling
> > > +- Queue Entry
> > > +- Port
> > > +- Queue
> > > +- Credits
> > > +- Scheduling Domain
> > > +- Interrupts
> > > +- Power Management
> > > +- User Interface
> > > +- Reset
> > > +
> > > +Introduction
> > > +============
> > > +
> > > +The Intel(r) Dynamic Load Balancer (Intel(r) DLB) is a PCIe device that
> > > +provides load-balanced, prioritized scheduling of core-to-core communication.
> > > +
> > > +Intel DLB is an accelerator for the event-driven programming model of
> > > +DPDK's Event Device Library[2]. The library is used in packet processing
> > > +pipelines that arrange for multi-core scalability, dynamic load-balancing, and
> > > +variety of packet distribution and synchronization schemes.
> >
> > As this is a networking related thing, I would like you to get the
> > proper reviews/acks from the networking maintainers before I can take
> > this.
> >
> > Or, if they think it has nothing to do with networking, that's fine too,
> > but please do not try to route around them.
> >
> >thanks,
> >
> >greg k-
> >
> To be clear, I did not sense any attempt to route around networking
> review as it appeared generically centered around hardware accelerated
> IPC. At the same time I don't know what I don't know about how this
> might interact with networking initiatives so the review trip seems
> reasonable to me.

OK. I have forwarded the patch set to netdev.

Thanks!
Mike

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