linux-kernel - [PATCH v2 0/2] Fix 'faddr2line' for LLVM arm64 builds

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Message-Id: <20230725211157.17031-1-will@kernel.org>
Date:   Tue, 25 Jul 2023 22:11:55 +0100
From:   Will Deacon <will@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        John Stultz <jstultz@...gle.com>, linux-kbuild@...r.kernel.org
Subject: [PATCH v2 0/2] Fix 'faddr2line' for LLVM arm64 builds

Hi folks,

This is version two of the patches I sent yesterday attempting to fix
'faddr2line' for LLVM arm64 kernel images.

v1: https://lore.kernel.org/r/20230724174517.15736-1-will@kernel.org

Changes since v1 include:
  * Dropped the patch adding support for LLVM=1, since Josh said he'd
    pick it up.
  * Reuse the ignored symbol regex from 'mksysmap' instead of ignoring
    symbols based on their type.

Feedback welcome. I've checked that the symbols in System.map for a
defconfig arm64 build are the same with and without these changes, but I
think I'd still like this to spend time in -next if we go down this
route.

Cheers,

Will

Cc: Masahiro Yamada <masahiroy@...nel.org>
Cc: Nathan Chancellor <nathan@...nel.org>
Cc: Nick Desaulniers <ndesaulniers@...gle.com>
Cc: Nicolas Schier <nicolas@...sle.eu>
Cc: Josh Poimboeuf <jpoimboe@...nel.org>
Cc: John Stultz <jstultz@...gle.com>
Cc: linux-kbuild@...r.kernel.org

--->8

Will Deacon (2):
  scripts/mksysmap: Factor out sed ignored symbols expression into
    script
  scripts/faddr2line: Constrain readelf output to symbols from
    System.map

 scripts/faddr2line              |  3 +-
 scripts/mksysmap                | 77 +--------------------------------
 scripts/sysmap-ignored-syms.sed | 74 +++++++++++++++++++++++++++++++
 3 files changed, 77 insertions(+), 77 deletions(-)
 create mode 100644 scripts/sysmap-ignored-syms.sed

-- 
2.41.0.487.g6d72f3e995-goog