Re: [PATCH 5.15 000/183] 5.15.134-rc1 review

[Harshit Mogalapalli]

On 06/10/23 3:55 pm, Greg Kroah-Hartman wrote:
> On Wed, Oct 04, 2023 at 11:43:46AM -0700, Florian Fainelli wrote:
> > On 10/4/23 10:53, Greg Kroah-Hartman wrote:
> > > This is the start of the stable review cycle for the 5.15.134 release.
> > > There are 183 patches in this series, all will be posted as a response
> > > to this one.  If anyone has any issues with these being applied, please
> > > let me know.
> > >
> > > Responses should be made by Fri, 06 Oct 2023 17:51:12 +0000.
> > > Anything received after that time might be too late.
> > >
> > > The whole patch series can be found in one patch at:
> > > 	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.134-rc1.gz
> > > or in the git tree and branch at:
> > > 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
> > > and the diffstat can be found below.
> > >
> > > thanks,
> > >
> > > greg k-h
> >
> > perf fails to build with:
> >
> >    CC /local/users/fainelli/buildroot/output/arm/build/linux-custom/tools/perf/util/metricgroup.o
> > util/metricgroup.c: In function 'metricgroup__parse_groups':
> > util/metricgroup.c:1261:7: error: 'table' undeclared (first use in this
> > function)
> >    if (!table)
> >         ^~~~~
> > util/metricgroup.c:1261:7: note: each undeclared identifier is reported only
> > once for each function it appears in
> > make[6]: *** [/local/users/fainelli/buildroot/output/arm/build/linux-custom/tools/build/Makefile.build:97: /local/users/fainelli/buildroot/output/arm/build/linux-custom/tools/perf/util/metricgroup.o]
> > Error 1
> >
> > caused by c1ef510a0f2a879bf29ddebae766ec9f0790eb8f ("perf metric: Return
> > early if no CPU PMU table exists"). Dropping this commit allows the build to
> > continue.
> >
> > I had reported in the previous cycle that 00facc760903be66 ("perf jevents:
> > Switch build to use jevents.py") was causing build failures:
> >
> > https://lore.kernel.org/all/6a577578-8adb-aa70-1bf8-b1a4573152cf@xxxxxxxxx/
> >
> > do we still want these commits to be included?
>
> No, I'll go drop them now, thanks for the report.

Thought:
It's not the first time we see build failures in tools/perf -- would it 
make sense to add this to your own build tests to reduce the round trip 
time for these errors ?

Note: After reverting three patches in perf/ the build succeeds:

Patch 151: c1ef510a0f2a perf metric: Return early if no CPU PMU table exists
Patch 81: 40ddac4ffc75 perf build: Update build rule for generated files
Patch 80: 8df938ed8c8a perf jevents: Switch build to use jevents.py


Thanks,
Harshit

> greg k-h