From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <nhorman@tuxdriver.com> Received: from smtp.tuxdriver.com (charlotte.tuxdriver.com [70.61.120.58]) by dpdk.org (Postfix) with ESMTP id D1D51913D for <dev@dpdk.org>; Wed, 16 Aug 2017 15:28:14 +0200 (CEST) Received: from nat-pool-rdu-t.redhat.com ([66.187.233.202] helo=localhost) by smtp.tuxdriver.com with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from <nhorman@tuxdriver.com>) id 1dhyMY-0000DL-Q9; Wed, 16 Aug 2017 09:28:11 -0400 Date: Wed, 16 Aug 2017 09:27:52 -0400 From: Neil Horman <nhorman@tuxdriver.com> To: "Van Haaren, Harry" <harry.van.haaren@intel.com> Cc: "dev@dpdk.org" <dev@dpdk.org> Message-ID: <20170816132752.GA19698@neilslaptop.think-freely.org> References: <1502800360-15782-1-git-send-email-harry.van.haaren@intel.com> <20170816111619.GA9348@hmswarspite.think-freely.org> <E923DB57A917B54B9182A2E928D00FA640C58F82@IRSMSX102.ger.corp.intel.com> <E923DB57A917B54B9182A2E928D00FA640C593CB@IRSMSX102.ger.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <E923DB57A917B54B9182A2E928D00FA640C593CB@IRSMSX102.ger.corp.intel.com> User-Agent: Mutt/1.8.3 (2017-05-23) X-Spam-Score: -2.9 (--) X-Spam-Status: No Subject: Re: [dpdk-dev] [PATCH 0/8] service: rework for usability X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <http://dpdk.org/ml/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://dpdk.org/ml/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <http://dpdk.org/ml/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> X-List-Received-Date: Wed, 16 Aug 2017 13:28:15 -0000 On Wed, Aug 16, 2017 at 12:07:11PM +0000, Van Haaren, Harry wrote: > > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Van Haaren, Harry > > Sent: Wednesday, August 16, 2017 12:32 PM > > To: Neil Horman <nhorman@tuxdriver.com> > > Cc: dev@dpdk.org > > Subject: Re: [dpdk-dev] [PATCH 0/8] service: rework for usability > > > > > From: Neil Horman [mailto:nhorman@tuxdriver.com] > > > Sent: Wednesday, August 16, 2017 12:16 PM > > > To: Van Haaren, Harry <harry.van.haaren@intel.com> > > > Cc: dev@dpdk.org > > > Subject: Re: [dpdk-dev] [PATCH 0/8] service: rework for usability > > > > > > On Tue, Aug 15, 2017 at 01:32:32PM +0100, Harry van Haaren wrote: > > > > This patchset reworks the service apis to be more user > > > > friendly. In particular, the various rte_service_* functions > > > > now take an integer id parameter instead of a service pointer. > > > > This both reduces the API surface (no service_get_from_id()), > > > > and allows easier debugging (gdb function calls with integer args), > > > > and various other benefits (better encapsulation, less pointers :) > > > > > > > > Finally, some APIs are changed or renamed for consistency and > > > > clarity of what they do. See commit messages for details. > > > > Note that the service library is merged as EXPERIMENTAL in > > > > the 17.08 release, allowing API improvements for 17.11 release. > > > > > > > > I hope to merge this patchset early in the 17.11 timeframe, > > > > so please review ASAP to allow time for other DPDK components > > > > to utilize services in this release :) > > > > > > > > Feedback and input welcome, -Harry > > > > > > > You need to add a deprecation note in the rel notes area so that people are > > > aware of the upcomming ABI changes > > > > Service cores was merged into 17.08 with the EXPERIMENTAL tag, which indicates that the > > API and ABI are not stable. The version map file has the service cores functions added in > > the Experimental staging area, instead of in the 17.08 stable ABI[1]. To make this very > > visible to the users, the documentation has large "Warning: Experimental, this API may > > change without prior notice" marks[2], and the MAINTAINERS file[3] has the Experimental > > tag. > > > > As far as I am aware, those are all the requirements to be able to remove / change / > > update / fix APIs. It was discussed on #IRC that it would be better to merge service-cores > > as experimental to allow faster iteration, and to get improvements out the door, and I'm > > still of that opinion. > > > > Given the above, I don't see any issue with merging service-core changes into the 17.11 > > release. > > > > [1] http://dpdk.org/browse/dpdk/tree/lib/librte_eal/linuxapp/eal/rte_eal_version.map#n212 > > [2] http://dpdk.org/doc/api/rte__service_8h.html#aea7fce2a101bf2c00194dffb30bfc4ea > > [3] http://dpdk.org/browse/dpdk/tree/MAINTAINERS#n138 > > Self-reply; > > On re-reading, perhaps I understood you wrong; did you mean that I need to add a section to the Release notes that the service core APIs have been updated in 17.11 itself? > > That's a very valid point - and I'll fix that in v2, (some other typo fixes to fix too). > I hadn't noted the experimental tag, so you likely don't need a deprecation warning, but yes, a release note to indicate the change to the API in 17.11 would be good. Best NEil > -Harry >