From: Thomas Monjalon <thomas@monjalon.net> To: David Marchand <david.marchand@redhat.com>, Kevin Laatz <kevin.laatz@intel.com> Cc: dev <dev@dpdk.org>, Bruce Richardson <bruce.richardson@intel.com>, "Kinsella, Ray" <ray.kinsella@intel.com>, Tomasz Duszynski <tdu@semihalf.com>, Zyta Szpak <zr@semihalf.com>, Rastislav Cernay <cernay@netcope.com>, Aaron Conole <aconole@redhat.com> Subject: Re: [dpdk-dev] [PATCH v6 00/11] Add ABI compatibility checks to the meson build Date: Fri, 20 Dec 2019 11:20:44 +0100 Message-ID: <1954775.STNsi1xJb4@xps> (raw) In-Reply-To: <CAJFAV8xJaQoTYh9Q2rWkEcRU1fS0bLW=m-4SMmYptK0RDk_g8A@mail.gmail.com> 19/12/2019 22:58, David Marchand: > On Fri, Dec 13, 2019 at 5:41 PM Kevin Laatz <kevin.laatz@intel.com> wrote: > > The proposed solution works as follows: > > 1. Generate the ABI dump of the baseline. This can be done with the new > > script added in this set. This step will only need to be done when the > > ABI version changes (so once a year) and can be added to master so it > > exists by default. This step can be skipped if the dump files for the > > baseline already exist. > > 2. Build with meson. If there is an ABI incompatibility, the build will > > fail and print the incompatibility information. [...] > - I asked for the dump files, but I can see that it is impractical. > > The dump files are huge. I did not expect that :-). > The dump files are architecture specific and maintaining multi arch > dumps would be even bigger than just what you sent for x86_64. > (not even considering the changes in ABI if some configuration items > have an impact...). I agree that dump files are better managed outside of git. > As you pointed out, people who don't have all dependencies won't > create/update those dump files. > Dealing with ABI updates (thinking of bumping the ABI version) is > likely a maintainer job, but it will be a source of issues and we > (maintainers) might miss some updates especially for drivers we can't > build. > > > - Why do we restrict the checks to meson? > The make build framework is going to disappear ok, but we can't leave > it untested. > People still rely on it. > > Checking the ABI is orthogonal to building DPDK. > Dumping the ABI and checking it against objects can be done externally. I agree we should not rely on meson for running the check. > - For those reasons, I have been trying an alternate approach [1]: in > Travis, generate a reference dump based on the first ancestor tag, > then build the proposed patches. > All contributions get picked up by Aaron robot and would have to pass > through this check. > > As an exercise, I tried to integrate Eelco patch [2], that moves > symbols from EXPERIMENTAL to a stable ABI. The check passes fine. > I also tried to bump the ABI major version. The check fails, as > expected, but I prepared a way to bypass such failures for the > releases where we will explicitely break ABI. > > For maintainers that integrate patches or developers that get a CI > failure and want to fix it, we would need to help them to: > * generate dumps on a reference version, so I would tend to write some > documentation since playing with the current sources would be too > dangerous from my pov, > * run the checks, like adding the check in the > devtools/test-*-build.sh scripts that already exist, with a new > configuration item to point at the dumps per target, We can start with a documented process, and write a separate script later if we feel it helps. > Those last two points are still to be done. > > WDYT? > > > 1: https://github.com/david-marchand/dpdk/commit/f18de2ec157f3cc1e7b319cb19700e1b5e9cecde > 2: https://patchwork.dpdk.org/patch/63970/ Thanks to both of you trying some approaches and making progress.
next prev parent reply index Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-23 1:07 [dpdk-dev] [RFC 0/6] " Kevin Laatz 2019-10-23 1:07 ` [dpdk-dev] [RFC 1/6] build: enable debug info by default in meson builds Kevin Laatz 2019-10-23 1:07 ` [dpdk-dev] [RFC 2/6] build: use meson warning levels Kevin Laatz 2019-10-23 1:07 ` [dpdk-dev] [RFC 3/6] devtools: add abi dump generation script Kevin Laatz 2019-10-23 1:07 ` [dpdk-dev] [RFC 4/6] build: add meson option for abi related checks Kevin Laatz 2019-10-23 1:07 ` [dpdk-dev] [RFC 5/6] build: add lib abi checks to meson Kevin Laatz 2019-10-23 1:07 ` [dpdk-dev] [RFC 6/6] build: add drivers " Kevin Laatz 2019-11-29 12:13 ` [dpdk-dev] [RFC 0/6] Add ABI compatibility checks to the meson build David Marchand 2019-11-29 17:10 ` [dpdk-dev] [PATCH v2 0/7] " Kevin Laatz 2019-11-29 17:10 ` [dpdk-dev] [PATCH v2 1/7] build: enable debug info by default in meson builds Kevin Laatz 2019-11-29 17:10 ` [dpdk-dev] [PATCH v2 2/7] build: use meson warning levels Kevin Laatz 2019-11-29 17:10 ` [dpdk-dev] [PATCH v2 3/7] devtools: add abi dump generation script Kevin Laatz 2019-11-29 17:10 ` [dpdk-dev] [PATCH v2 4/7] build: add meson option for abi related checks Kevin Laatz 2019-11-29 17:10 ` [dpdk-dev] [PATCH v2 5/7] build: add lib abi checks to meson Kevin Laatz 2019-11-29 17:10 ` [dpdk-dev] [PATCH v2 6/7] build: add drivers " Kevin Laatz 2019-11-29 17:10 ` [dpdk-dev] [PATCH v2 7/7] build: clean up experimental syms check Kevin Laatz 2019-11-29 21:08 ` [dpdk-dev] [PATCH v3 0/7] Add ABI compatibility checks to the meson build Kevin Laatz 2019-11-29 21:08 ` [dpdk-dev] [PATCH v3 1/7] build: enable debug info by default in meson builds Kevin Laatz 2019-11-29 21:09 ` [dpdk-dev] [PATCH v3 2/7] build: use meson warning levels Kevin Laatz 2019-11-29 21:09 ` [dpdk-dev] [PATCH v3 3/7] devtools: add abi dump generation script Kevin Laatz 2019-11-29 21:09 ` [dpdk-dev] [PATCH v3 4/7] build: add meson option for abi related checks Kevin Laatz 2019-11-29 21:09 ` [dpdk-dev] [PATCH v3 5/7] build: add lib abi checks to meson Kevin Laatz 2019-11-29 21:09 ` [dpdk-dev] [PATCH v3 6/7] build: add drivers " Kevin Laatz 2019-11-29 21:09 ` [dpdk-dev] [PATCH v3 7/7] build: clean up experimental syms check Kevin Laatz 2019-12-03 11:03 ` [dpdk-dev] [PATCH v3 0/7] Add ABI compatibility checks to the meson build David Marchand 2019-12-03 15:27 ` Laatz, Kevin 2019-12-04 8:47 ` David Marchand 2019-12-04 10:46 ` Bruce Richardson 2019-12-04 11:56 ` Neil Horman 2019-12-04 12:00 ` David Marchand 2019-12-10 11:07 ` David Marchand 2019-12-10 11:36 ` Laatz, Kevin 2019-12-11 18:21 ` [dpdk-dev] [PATCH v4 0/3] " Kevin Laatz 2019-12-11 18:21 ` [dpdk-dev] [PATCH v4 2/3] build: add abi checks to meson Kevin Laatz 2019-12-11 18:21 ` [dpdk-dev] [PATCH v4 3/3] build: clean up experimental syms check Kevin Laatz [not found] ` <20191211182147.19355-2-kevin.laatz@intel.com> 2019-12-12 8:43 ` [dpdk-dev] [PATCH v4 1/3] build: add dump files for v20.0 ABI David Marchand 2019-12-12 9:36 ` David Marchand 2019-12-12 9:45 ` Laatz, Kevin 2019-12-12 9:45 ` Laatz, Kevin 2019-12-13 14:02 ` [dpdk-dev] [PATCH v5 0/3] Add ABI compatibility checks to the meson build Kevin Laatz 2019-12-13 14:03 ` [dpdk-dev] [PATCH v5 2/3] build: add abi checks to meson Kevin Laatz 2019-12-13 14:03 ` [dpdk-dev] [PATCH v5 3/3] build: clean up experimental syms check Kevin Laatz 2019-12-13 16:40 ` [dpdk-dev] [PATCH v6 00/11] Add ABI compatibility checks to the meson build Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 01/11] lib: add dump files for v20.0 ABI Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 02/11] drivers/bus: " Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 03/11] drivers/mempool: " Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 04/11] drivers/common: " Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 05/11] drivers/raw: " Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 06/11] drivers/crypto: " Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 07/11] drivers/compress: " Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 08/11] drivers/net: " Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 09/11] drivers/net/intel: " Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 10/11] build: add abi checks to meson Kevin Laatz 2019-12-13 16:41 ` [dpdk-dev] [PATCH v6 11/11] build: clean up experimental syms check Kevin Laatz 2019-12-19 21:58 ` [dpdk-dev] [PATCH v6 00/11] Add ABI compatibility checks to the meson build David Marchand 2019-12-20 10:20 ` Thomas Monjalon [this message] 2019-12-20 11:04 ` Bruce Richardson 2019-12-20 13:19 ` David Marchand 2019-12-20 14:17 ` Bruce Richardson 2020-01-06 13:20 ` Aaron Conole
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