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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BYAPR11MB3095.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: d1227bf7-60b2-4b6c-d131-08d8e1712a04 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Mar 2021 13:59:02.4588 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 6Y0aJA3UnrrBO1hdKlKHUD9qZJpqOYmxpx9A5fGRLu20ymRB0AQ4VvmLA2ei1e5Lhrmy52JF1qzSpEDbdj4JwHcMgJ/jkbF8JipFKh7zX7c= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB3637 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org > -----Original Message----- > From: gregkh@linuxfoundation.org > Sent: Thursday, February 18, 2021 2:53 AM > To: Chen, Mike Ximing > Cc: netdev@vger.kernel.org; Linux Kernel Mailing List kernel@vger.kernel.org>; davem@davemloft.net; kuba@kernel.org; arnd@arndb= .de; > Williams, Dan J ; pierre-louis.bossart@linux.in= tel.com > Subject: Re: [PATCH v10 01/20] dlb: add skeleton for DLB driver >=20 > On Thu, Feb 18, 2021 at 07:34:31AM +0000, Chen, Mike Ximing wrote: > > > > > > > -----Original Message----- > > > From: Mike Ximing Chen > > > Sent: Wednesday, February 10, 2021 12:54 PM > > > To: netdev@vger.kernel.org > > > Cc: davem@davemloft.net; kuba@kernel.org; arnd@arndb.de; > > > gregkh@linuxfoundation.org; Williams, Dan J ; > pierre- > > > louis.bossart@linux.intel.com; Gage Eads > > > Subject: [PATCH v10 01/20] dlb: add skeleton for DLB driver > > > > > > 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 > > > + > > > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > > +Intel(R) Dynamic Load Balancer Overview > > > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > > + > > > +:Authors: Gage Eads and Mike Ximing Chen > > > + > > > +Contents > > > +=3D=3D=3D=3D=3D=3D=3D=3D > > > + > > > +- Introduction > > > +- Scheduling > > > +- Queue Entry > > > +- Port > > > +- Queue > > > +- Credits > > > +- Scheduling Domain > > > +- Interrupts > > > +- Power Management > > > +- User Interface > > > +- Reset > > > + > > > +Introduction > > > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > > + > > > +The Intel(r) Dynamic Load Balancer (Intel(r) DLB) is a PCIe device t= hat > > > +provides load-balanced, prioritized scheduling of core-to-core commu= nication. > > > + > > > +Intel DLB is an accelerator for the event-driven programming model o= f > > > +DPDK's Event Device Library[2]. The library is used in packet proces= sing > > > +pipelines that arrange for multi-core scalability, dynamic load-bala= ncing, and > > > +variety of packet distribution and synchronization schemes. > > > + > > > +Intel DLB device consists of queues and arbiters that connect produc= er > > > +cores and consumer cores. The device implements load-balanced queuei= ng > > > features > > > +including: > > > +- Lock-free multi-producer/multi-consumer operation. > > > +- Multiple priority levels for varying traffic types. > > > +- 'Direct' traffic (i.e. multi-producer/single-consumer) > > > +- Simple unordered load-balanced distribution. > > > +- Atomic lock free load balancing across multiple consumers. > > > +- Queue element reordering feature allowing ordered load-balanced di= stribution. > > > + > > > > Hi Jakub/Dave, > > This is a device driver for a HW core-to-core communication accelerator= . It is > submitted > > to "linux-kernel" for a module under device/misc. Greg suggested (see b= elow) that > we > > also sent it to you for any potential feedback in case there is any int= eraction with > > networking initiatives. The device is used to handle the load balancing= among CPU > cores > > after the packets are received and forwarded to CPU. We don't think it = interferes > > with networking operations, but would appreciate very much your > review/comment on this. >=20 > It's the middle of the merge window, getting maintainers to review new > stuff until after 5.12-rc1 is out is going to be a very difficult thing > to do. >=20 Hi Jakub/Dave, Just wonder if you had a chance to take a look at our patch. With the close= of 5.12 merge window, we would like to get the process moving again. > In the meantime, why don't you all help out and review submitted patches > to the mailing lists for the subsystems you all are trying to get this > patch into. I know maintainers would appreciate the help, right? >=20 > thanks, >=20 > greg k-h Did a few reviews last weekend, and will continue to help. Thanks Mike