linux-kernel - Re: [PATCH 5.15 101/107] kbuild: Unify options for BTF generation for vmlinux and modules

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Date:   Wed, 7 Sep 2022 09:02:19 +0200
From:   Jiri Olsa <olsajiri@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Andrii Nakryiko <andrii@...nel.org>
Subject: Re: [PATCH 5.15 101/107] kbuild: Unify options for BTF generation
 for vmlinux and modules

On Wed, Sep 07, 2022 at 07:40:16AM +0200, Greg Kroah-Hartman wrote:
> On Tue, Sep 06, 2022 at 11:45:00AM -0700, Florian Fainelli wrote:
> > 
> > 
> > On 9/6/2022 6:31 AM, Greg Kroah-Hartman wrote:
> > > From: Jiri Olsa <jolsa@...hat.com>
> > > 
> > > commit e27f05147bff21408c1b8410ad8e90cd286e7952 upstream.
> > > 
> > > Using new PAHOLE_FLAGS variable to pass extra arguments to
> > > pahole for both vmlinux and modules BTF data generation.
> > > 
> > > Adding new scripts/pahole-flags.sh script that detect and
> > > prints pahole options.
> > > 
> > > [ fixed issues found by kernel test robot ]
> > > 
> > > Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> > > Signed-off-by: Andrii Nakryiko <andrii@...nel.org>
> > > Acked-by: Andrii Nakryiko <andrii@...nel.org>
> > > Link: https://lore.kernel.org/bpf/20211029125729.70002-1-jolsa@kernel.org
> > > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > > ---
> > >   Makefile                  |    3 +++
> > >   scripts/Makefile.modfinal |    2 +-
> > >   scripts/link-vmlinux.sh   |   11 +----------
> > >   scripts/pahole-flags.sh   |   20 ++++++++++++++++++++
> > >   4 files changed, 25 insertions(+), 11 deletions(-)
> > >   create mode 100755 scripts/pahole-flags.sh
> > 
> > My linux-stable-rc/linux-5.15.y checkout shows that scripts/pahole-flags.sh
> > does not have an executable permission and commit
> > 128e3cc0beffc92154d9af6bd8c107f46e830000 ("kbuild: Unify options for BTF
> > generation for vmlinux and modules") does have:
> > 
> > diff --git a/scripts/pahole-flags.sh b/scripts/pahole-flags.sh
> > new file mode 100644
> > index 000000000000..e6093adf4c06
> > 
> > whereas your email does have the proper 100755 permission set on the file,
> > any idea what happened here?
> 
> Yeah, quilt does not like dealing with file permissions at all :(
> 
> We have over time, not required executable permissions on kernel files
> because of this issue.  Is it required here?  If so, I'll try to
> remember to fix it up "by hand".

yes, pahole-flags.sh needs to have +x

thanks,
jirka

> 
> thanks,
> 
> greg k-h