Alexey reported that the fraction of unknown filename instances in
kallsyms grew from ~0.3% to ~10% recently; Bill and Greg tracked it down
to assembler defined symbols, which regressed as a result of:
commit b8a9092330da ("Kbuild: do not emit debug info for assembly with LLVM_IAS=1")
In that commit, I allude to restoring debug info for assembler defined
symbols in a follow up patch, but it seems I forgot to do so in
commit a66049e2cf0e ("Kbuild: make DWARF version a choice")
Do so requires a fixup for as-option, which seems to be failing when
used in scripts/Makefile.debug.
Also includes a fix for DEBUG_INFO_SPLIT while I'm here. Dmitrii
reports that this has been broken since gcc-11+ & clang-12+. I'm
guessing no one uses this .config option...since no one else has
reported it being broken yet...
Nick Desaulniers (3):
Makefile.compiler: s/KBUILD_CFLAGS/KBUILD_AFLAGS/ for as-option
Makefile.debug: re-enable debug info for .S files
Makefile.debug: set -g unconditional on CONFIG_DEBUG_INFO_SPLIT
arch/x86/boot/compressed/Makefile | 5 +++--
scripts/Makefile.compiler | 6 +++---
scripts/Makefile.debug | 26 +++++++++++++++++++-------
3 files changed, 25 insertions(+), 12 deletions(-)
--
2.37.2.672.g94769d06f0-goog
