[lttng-dev] [PATCH] compaction: make tracepoints condtional on CONFIG_COMPACTION

[Bruce Ashfield]

On Wed, Aug 10, 2022 at 11:20 AM Michael Jeanson <mjeanson at efficios.com> wrote:
>
> On 2022-08-03 15 h 23, Bruce Ashfield via lttng-dev wrote:
> > Hi all,
> >
> > This was found during the update of the yocto project reference
> > kernel to 5.19. Out of all the supported architectures, only
> > mips failed during the build of lttng-modules.
> >
> > Specifically, it seems like the lack of CONFIG_COMPACTION being
> > enabled in the kernel was the significant issue. Only one of the
> > tracepoints blew up, but I can't see how any of them would be
> > valid in this scenario, or why it would be limited to mips.
> >
> > While I don't think this is the right fix, this is what got me
> > up and passing sanity testing, so I wanted to send the change
> > and see what the actual, correct fix would be :)
> >
> > Cheers,
> >
> > Bruce
>
> Hi Bruce,
>
> Thanks for reporting this issue, I propose a simpler fix [1] of just
> disabling the build of the compaction probe module when
> CONFIG_COMPACTION is disabled in the kernel configuration.
>
> Can you confirm this patch fixes the issue on your side?

confirmed, it fixes the issue on my side.

Bruce

>
> Thanks,
>
> Michael
>
> [1] https://review.lttng.org/c/lttng-modules/+/8660



-- 
- Thou shalt not follow the NULL pointer, for chaos and madness await
thee at its end
- "Use the force Harry" - Gandalf, Star Trek II