diff options
| author | Nick Desaulniers <ndesaulniers@google.com> | 2022-10-24 13:34:14 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-29 10:12:58 +0200 |
| commit | 0ee2f0567a56298e442464efd84d1f649068106e (patch) | |
| tree | 254dfeaa684e4760310e35e3221c9ad7489c7c49 | |
| parent | 117825e9bbb113e0321ac470b5fe17629e785686 (diff) | |
Makefile.debug: re-enable debug info for .S files
This is _not_ an upstream commit and just for 5.15.y only. It is based
on commit 32ef9e5054ec0321b9336058c58ec749e9c6b0fe 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 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")
Fixes: b8a9092330da ("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>
| -rw-r--r-- | Makefile | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -870,7 +870,9 @@ else DEBUG_CFLAGS += -g endif -ifndef CONFIG_AS_IS_LLVM +ifdef CONFIG_AS_IS_LLVM +KBUILD_AFLAGS += -g +else KBUILD_AFLAGS += -Wa,-gdwarf-2 endif |