Makefile.debug: re-enable debug info for .S files

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This is _not_ an upstream commit and just for 5.15.y only. It is based
on commit 32ef9e5054 upstream.

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 b8a9092330 ("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 a66049e2cf ("Kbuild: make DWARF version a choice")

Fixes: b8a9092330 ("Kbuild: do not emit debug info for assembly with LLVM_IAS=1")
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Nick Desaulniers 2022-10-24 13:34:14 -07:00 • committed by Greg Kroah-Hartman

parent 117825e9bb

commit 0ee2f0567a

1 changed files with 3 additions and 1 deletions

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