Messages in this thread | | | From | "Chen, Mike Ximing" <> | Subject | RE: [PATCH v10 01/20] dlb: add skeleton for DLB driver | Date | Thu, 18 Feb 2021 15:37:53 +0000 |
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> -----Original Message----- > From: gregkh@linuxfoundation.org <gregkh@linuxfoundation.org> > Sent: Thursday, February 18, 2021 2:53 AM > To: Chen, Mike Ximing <mike.ximing.chen@intel.com> > Cc: netdev@vger.kernel.org; Linux Kernel Mailing List <linux- > kernel@vger.kernel.org>; davem@davemloft.net; kuba@kernel.org; arnd@arndb.de; > Williams, Dan J <dan.j.williams@intel.com>; pierre-louis.bossart@linux.intel.com > Subject: Re: [PATCH v10 01/20] dlb: add skeleton for DLB driver > > On Thu, Feb 18, 2021 at 07:34:31AM +0000, Chen, Mike Ximing wrote: > > > > > > > -----Original Message----- > > > From: Mike Ximing Chen <mike.ximing.chen@intel.com> > > > 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 <dan.j.williams@intel.com>; > pierre- > > > louis.bossart@linux.intel.com; Gage Eads <gage.eads@intel.com> > > > 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 > > > + > > > +=========================================== > > > +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. > > > + > > > +Intel DLB device consists of queues and arbiters that connect producer > > > +cores and consumer cores. The device implements load-balanced queueing > > > 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 distribution. > > > + > > > > 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 below) that > we > > also sent it to you for any potential feedback in case there is any interaction 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. > > 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. > > 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? > > thanks, > > greg k-h
Sure. I am a little new to the community and process, but will try to help. Thanks Mike
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