[lttng-dev] [OE-core] [PATCH v2] lttng-modules: Backport patches to fix compilation failures since kernel v5.1

[He Zhe]

On 6/12/19 10:52 PM, Jonathan Rajotte-Julien wrote:
> Hi,
>
>>> Please don't base distributions on -rc tags. They are not meant for this.
>>>
>>> We always integrate support for newer kernel versions instrumentation back
>>> into our current stable release. So as soon as 5.2 final comes out, we will
>>> release a 2.10.x version including support for it in lttng-modules.
>> I'm one of the people who need to use lttng-modules on rc kernel.
> If so, please use a git based recipe building the HEAD of the latest released
> stable branch (stable-2.10 currently since 2.11 is in currently in the RC
> stage). If you have problem, report them on our mailing list [1] or our bug
> tracker [2]. We have extensive CI jobs for lttng-modules against the vanilla
> kernel [3] and other usual suspects [4]. We normally catch those problems
> quite quickly. Keep in mind that in no way should a production image be built
> with a non tagged release.
>
> As for the oe-core recipe, please send us a quick email to let us know, patch
> level releases are cheap. Keep in mind that we are chasing a moving target
> here.
>
> To add to Mathieu statement, not only do we integrate support for newer kernels into
> the current stable branch but also in all the supported stable branch when
> possible. The supported stable release are normally the 3 latest minor-level releases.
> Currently this set is : 2.8, 2.9, 2.10 .
>
> [1] https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
> [2] https://bugs.lttng.org/
> [3] An example of such job running: https://ci.lttng.org/view/LTTng-modules/job/lttng-modules_master_build-vanilla/648/console
>     This job validate that lttng-modules master builds against the following vanilla kernel tags. We have
>     similar jobs for master, stable 2.11, stable 2.10, stable 2.9, stable 2.10 lttng-modules branch.
>       v3.0.101
>       v3.1.10
>       v3.2.102
>       v3.3.8
>       v3.4.113
>       v3.5.7
>       v3.6.11
>       v3.7.10
>       v3.8.13
>       v3.9.11
>       v3.10.108
>       v3.11.10
>       v3.12.74
>       v3.13.11
>       v3.14.79
>       v3.15.10
>       v3.16.68
>       v3.17.8
>       v3.18.140
>       v3.19.8
>       v4.0.9
>       v4.1.52
>       v4.2.8
>       v4.3.6
>       v4.4.181
>       v4.5.7
>       v4.6.7
>       v4.7.10
>       v4.8.17
>       v4.9.181
>       v4.10.17
>       v4.11.12
>       v4.12.14
>       v4.13.16
>       v4.14.125
>       v4.15.18
>       v4.16.18
>       v4.17.19
>       v4.18.20
>       v4.19.50
>       v4.20.17
>       v5.0.21
>       v5.1.9
>       v5.2-rc4
> [4] https://ci.lttng.org/view/LTTng-modules/

Thanks for your great input.

Zhe

>