Re: [PATCH v6 2/2] Kbuild: implement support for DWARF v5

On Sat, Jan 30, 2021 at 7:42 AM Sedat Dilek [off-list ref] wrote:

On Fri, Jan 29, 2021 at 11:31 PM Nick Desaulniers
[off-list ref] wrote:

quoted

On Fri, Jan 29, 2021 at 2:23 PM Sedat Dilek [off-list ref] wrote:

quoted

On Fri, Jan 29, 2021 at 11:21 PM Nick Desaulniers
[off-list ref] wrote:

quoted

On Fri, Jan 29, 2021 at 2:11 PM Sedat Dilek [off-list ref] wrote:

quoted

On Fri, Jan 29, 2021 at 11:09 PM Nick Desaulniers
[off-list ref] wrote:

quoted

On Fri, Jan 29, 2021 at 1:20 PM Sedat Dilek [off-list ref] wrote:

quoted

On Fri, Jan 29, 2021 at 10:13 PM Sedat Dilek [off-list ref] wrote:

quoted

On Fri, Jan 29, 2021 at 10:09 PM Nick Desaulniers
[off-list ref] wrote:

quoted

Can you tell me please what is the precise command line invocation of
make and which source file you observed this on so that I can
reproduce?

If you don't send me your invocation of `make`, I cannot help you.

/usr/bin/perf_5.10 stat make V=1 -j4 LLVM=1 LLVM_IAS=1
PAHOLE=/opt/pahole/bin/pahole LOCALVERSION=-10-amd64-clang12
-lto-pgo KBUILD_VERBOSE=1 KBUILD_BUILD_HOST=iniza
KBUILD_BUILD_USER=sedat.dilek@gmail.com
KBUILD_BUILD_TIMESTAMP=2021-01-29 bindeb-pkg
KDEB_PKGVERSION=5.11.0~rc5-10~bullseye+dileks1

$ make LLVM=1 LLVM_IAS=1 -j72 defconfig
$ make LLVM=1 LLVM_IAS=1 -j72 menuconfig
<enable CONFIG_DEBUG_INFO and CONFIG_DEBUG_INFO_DWARF5>
$ make LLVM=1 LLVM_IAS=1 -j72 V=1 &> log.txt
$ grep '\-g -gdwarf-5 -g -gdwarf-5' log.txt | wc -l
0
$ grep '\-g -gdwarf-5' log.txt | wc -l
2517

Do have the patch applied twice, perhaps?

Switched to my v6 local Git branch and invoked above make line I gave you.
I still see that double.
Looks like I need some "undrunken" switch.

Can you follow my steps precisely to see whether it's your .config?
Perhaps there is a config that duplicates DEBUG_CFLAGS that is not set
in the defconfig?  If so, it's still harmless to specify the same
commands twice, and likely isn't introduced by this patch set if so;
so I'm not sure how much more effort is worth pursuing.

If I follow your steps of make I do not see it "double" (in my local
v6 Git branch).

Looks like this is coming from my build-script.

I checked if I have some double dwarf(-5) patches double - Nope.

Sorry for the late reply.

I do not know which command you input,
but this happens for deb-pkg builds for example.

Please try this patch:
https://lore.kernel.org/patchwork/patch/1374926/








--
Best Regards
Masahiro Yamada