Re: [OE-core] [PATCH 2/4] lttng-modules: update to 2.13.0

["Andrey Zhizhikin" <andrey.z@gmail.com>]

Hello Bruce,

On Tue, Aug 17, 2021 at 5:27 PM Bruce Ashfield <bruce.ashfield@gmail.com> wrote:
>
> From: Bruce Ashfield <bruce.ashfield@gmail.com>
>
> Updating to 2.13.0, so we can pick up the latest -stable and
> support for 5.14+ kernels.
>
> We refresh one patch for new context, and update the LICENSE
> checksum due to commit 2df37e95fa4303 [Cleanup: Move headers from
> toplevel to include/lttng/]. which impacted the LICENSE file (but
> licensing is the same).

I'm seeing a build failure with this new LTTng and CONFIG_TRACEPOINTS
not enabled on the kernel 5.13.12. The failure comes from the Kbuild,
which does not demote the missing trace point config option from error
to warning. There is a patch file already in the layer, but it is only
appended to the 'class-devupstream' and is missing in the SRC_URI.

I was going to submit the patch to recipe to have it included, but
testing the build stage with this patch included I'm seeing a lot of
other errors then, something like:

lttng-modules-2.13.0/src/lttng-tracepoint.c:227:36: error: 'struct
module' has no member named 'num_tracepoints'
-- or --
src/probes/../../include/instrumentation/events/rpc.h:208:36: error:
implicit declaration of function 'rpc_qname'
[-Werror=implicit-function-declaration]

and the list goes on... :/

Have you seen this during testing of this new version? Any advise on
where to look next?

>
> MODULES_MODULE_SYMVERS_LOCATION must also be specified in this
> release, as the lttng build has moved the module target to a
> 'src' subdirectory.
>
> Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
> ---
>  ...fail-if-CONFIG_TRACEPOINTS-is-not-en.patch | 32 ++++++-------------
>  ...ules_2.12.6.bb => lttng-modules_2.13.0.bb} |  6 ++--
>  2 files changed, 14 insertions(+), 24 deletions(-)
>  rename meta/recipes-kernel/lttng/{lttng-modules_2.12.6.bb => lttng-modules_2.13.0.bb} (88%)
>
>


-- 
Regards,
Andrey.