[PATCH bpf-next 0/5] Allow CONFIG_DEBUG_INFO_DWARF5=y + CONFIG_DEBUG_INFO_BTF=y

Nathan Chancellor
2022-02-01T20:56:58Z

Hi all,

This series allows CONFIG_DEBUG_INFO_DWARF5 to be selected with
CONFIG_DEBUG_INFO_BTF=y by checking the pahole version.

The first four patches add CONFIG_PAHOLE_VERSION and
scripts/pahole-version.sh to clean up all the places that pahole's
version is transformed into a 3-digit form.

The fourth patch adds a PAHOLE_VERSION dependency to DEBUG_INFO_DWARF5
so that there are no build errors when it is selected with
DEBUG_INFO_BTF.

I build tested Fedora's aarch64 and x86_64 config with ToT clang 14.0.0
and GCC 11 with CONFIG_DEBUG_INFO_DWARF5 enabled with both pahole 1.21
and 1.23.

Nathan Chancellor (5):
MAINTAINERS: Add scripts/pahole-flags.sh to BPF section
kbuild: Add CONFIG_PAHOLE_VERSION
scripts/pahole-flags.sh: Use pahole-version.sh
lib/Kconfig.debug: Use CONFIG_PAHOLE_VERSION
lib/Kconfig.debug: Allow BTF + DWARF5 with pahole 1.21+

MAINTAINERS | 2 ++
init/Kconfig | 4 ++++
lib/Kconfig.debug | 6 +++---
scripts/pahole-flags.sh | 2 +-
scripts/pahole-version.sh | 13 +++++++++++++
5 files changed, 23 insertions(+), 4 deletions(-)
create mode 100755 scripts/pahole-version.sh

base-commit: 533de4aea6a91eb670ff8ff2b082bb34f2c5d6ab
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2.35.1