From: maennich@google.com
To: linux-kernel@vger.kernel.org
Cc: kernel-team@android.com, maennich@google.com,
stable@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Nathan Chancellor <nathan@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>
Subject: [PATCH 5/5] lib/Kconfig.debug: Allow BTF + DWARF5 with pahole 1.21+
Date: Wed, 22 Feb 2023 11:21:47 +0000 [thread overview]
Message-ID: <20230222112141.278066-6-maennich@google.com> (raw)
In-Reply-To: <20220201205624.652313-1-nathan@kernel.org>
From: Nathan Chancellor <nathan@kernel.org>
Commit 98cd6f521f10 ("Kconfig: allow explicit opt in to DWARF v5")
prevented CONFIG_DEBUG_INFO_DWARF5 from being selected when
CONFIG_DEBUG_INFO_BTF is enabled because pahole had issues with clang's
DWARF5 info. This was resolved by [1], which is in pahole v1.21.
Allow DEBUG_INFO_DWARF5 to be selected with DEBUG_INFO_BTF when using
pahole v1.21 or newer.
[1]: https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?id=7d8e829f636f47aba2e1b6eda57e74d8e31f733c
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220201205624.652313-6-nathan@kernel.org
Signed-off-by: Matthias Maennich <maennich@google.com>
---
lib/Kconfig.debug | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0743c9567d7e..dd86de130cdf 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -302,7 +302,7 @@ config DEBUG_INFO_DWARF4
config DEBUG_INFO_DWARF5
bool "Generate DWARF Version 5 debuginfo"
depends on !CC_IS_CLANG || AS_IS_LLVM || (AS_IS_GNU && AS_VERSION >= 23502 && AS_HAS_NON_CONST_LEB128)
- depends on !DEBUG_INFO_BTF
+ depends on !DEBUG_INFO_BTF || PAHOLE_VERSION >= 121
help
Generate DWARF v5 debug info. Requires binutils 2.35.2, gcc 5.0+ (gcc
5.0+ accepts the -gdwarf-5 flag but only had partial support for some
--
2.39.2.637.g21b0678d19-goog
next prev parent reply other threads:[~2023-02-22 11:24 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-01 20:56 [PATCH bpf-next 0/5] Allow CONFIG_DEBUG_INFO_DWARF5=y + CONFIG_DEBUG_INFO_BTF=y Nathan Chancellor
2022-02-01 20:56 ` [PATCH bpf-next 1/5] MAINTAINERS: Add scripts/pahole-flags.sh to BPF section Nathan Chancellor
2022-02-01 20:56 ` [PATCH bpf-next 2/5] kbuild: Add CONFIG_PAHOLE_VERSION Nathan Chancellor
2022-02-01 20:56 ` [PATCH bpf-next 3/5] scripts/pahole-flags.sh: Use pahole-version.sh Nathan Chancellor
2022-02-01 20:56 ` [PATCH bpf-next 4/5] lib/Kconfig.debug: Use CONFIG_PAHOLE_VERSION Nathan Chancellor
2022-02-01 20:56 ` [PATCH bpf-next 5/5] lib/Kconfig.debug: Allow BTF + DWARF5 with pahole 1.21+ Nathan Chancellor
2022-02-02 7:05 ` [PATCH bpf-next 0/5] Allow CONFIG_DEBUG_INFO_DWARF5=y + CONFIG_DEBUG_INFO_BTF=y Andrii Nakryiko
2022-02-02 10:25 ` Daniel Borkmann
2022-02-02 10:30 ` patchwork-bot+netdevbpf
2023-02-22 11:21 ` [PATCH " maennich
2023-02-22 11:25 ` Greg Kroah-Hartman
2023-02-22 11:37 ` Matthias Männich
2023-02-22 11:21 ` [PATCH 1/5] MAINTAINERS: Add scripts/pahole-flags.sh to BPF section maennich
2023-02-22 11:23 ` kernel test robot
2023-02-22 11:26 ` Greg Kroah-Hartman
2023-02-22 11:38 ` Matthias Männich
2023-02-22 11:21 ` [PATCH 2/5] kbuild: Add CONFIG_PAHOLE_VERSION maennich
2023-02-22 11:21 ` [PATCH 3/5] scripts/pahole-flags.sh: Use pahole-version.sh maennich
2023-02-22 11:21 ` [PATCH 4/5] lib/Kconfig.debug: Use CONFIG_PAHOLE_VERSION maennich
2023-02-23 9:17 ` Greg Kroah-Hartman
2023-02-22 11:21 ` maennich [this message]
2023-02-23 11:53 ` [PATCH v5.15 v2 0/4] Allow CONFIG_DEBUG_INFO_DWARF5=y + CONFIG_DEBUG_INFO_BTF=y Matthias Maennich
2023-02-23 12:36 ` Greg Kroah-Hartman
2023-02-23 11:53 ` [PATCH v5.15 v2 1/4] kbuild: Add CONFIG_PAHOLE_VERSION Matthias Maennich
2023-02-23 11:53 ` [PATCH v5.15 v2 2/4] scripts/pahole-flags.sh: Use pahole-version.sh Matthias Maennich
2023-02-23 11:53 ` [PATCH v5.15 v2 3/4] lib/Kconfig.debug: Use CONFIG_PAHOLE_VERSION Matthias Maennich
2023-02-23 11:53 ` [PATCH v5.15 v2 4/4] lib/Kconfig.debug: Allow BTF + DWARF5 with pahole 1.21+ Matthias Maennich
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