aboutsummaryrefslogtreecommitdiff
path: root/scripts/Makefile.debug
AgeCommit message (Collapse)AuthorFilesLines
2024-04-02kbuild: rust: use `-Zdebuginfo-compression`Miguel Ojeda1-0/+2
Rust 1.74.0 introduced (unstable) support for the `-Zdebuginfo-compression` flag, thus use it. Note that the releases built by the Rust project (i.e. the ones provided by rustup) do not enable support for zstd in their bundled LLVM (yet, at least), thus the Rust compiler will warn, but the build will proceed: warning: unknown debuginfo compression algorithm zstd - will fall back to uncompressed debuginfo Link: https://github.com/rust-lang/rust/issues/120953 Link: https://github.com/rust-lang/rust/pull/115358 Reviewed-by: Alice Ryhl <[email protected]> Link: https://lore.kernel.org/r/[email protected] [ Added note about zstd support in Rust-provided binaries. ] Signed-off-by: Miguel Ojeda <[email protected]>
2024-04-02kbuild: rust: use `-Zdwarf-version` to support DWARFv5Miguel Ojeda1-0/+6
Rust 1.64.0 introduced (unstable) support for the `-Zdwarf-version` flag, which allows to select DWARFv5, thus use it. Link: https://github.com/rust-lang/rust/issues/103057 Link: https://github.com/rust-lang/rust/pull/98350 Reviewed-by: Alice Ryhl <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Miguel Ojeda <[email protected]>
2022-11-21Makefile.debug: support for -gz=zstdNick Desaulniers1-1/+5
Make DEBUG_INFO_COMPRESSED a choice; DEBUG_INFO_COMPRESSED_NONE is the default, DEBUG_INFO_COMPRESSED_ZLIB uses zlib, DEBUG_INFO_COMPRESSED_ZSTD uses zstd. This renames the existing KConfig option DEBUG_INFO_COMPRESSED to DEBUG_INFO_COMPRESSED_ZLIB so users upgrading may need to reset the new Kconfigs. Some quick N=1 measurements with du, /usr/bin/time -v, and bloaty: clang-16, x86_64 defconfig plus CONFIG_DEBUG_INFO=y CONFIG_DEBUG_INFO_COMPRESSED_NONE=y: Elapsed (wall clock) time (h:mm:ss or m:ss): 0:55.43 488M vmlinux 27.6% 136Mi 0.0% 0 .debug_info 6.1% 30.2Mi 0.0% 0 .debug_str_offsets 3.5% 17.2Mi 0.0% 0 .debug_line 3.3% 16.3Mi 0.0% 0 .debug_loclists 0.9% 4.62Mi 0.0% 0 .debug_str clang-16, x86_64 defconfig plus CONFIG_DEBUG_INFO=y CONFIG_DEBUG_INFO_COMPRESSED_ZLIB=y: Elapsed (wall clock) time (h:mm:ss or m:ss): 1:00.35 385M vmlinux 21.8% 85.4Mi 0.0% 0 .debug_info 2.1% 8.26Mi 0.0% 0 .debug_str_offsets 2.1% 8.24Mi 0.0% 0 .debug_loclists 1.9% 7.48Mi 0.0% 0 .debug_line 0.5% 1.94Mi 0.0% 0 .debug_str clang-16, x86_64 defconfig plus CONFIG_DEBUG_INFO=y CONFIG_DEBUG_INFO_COMPRESSED_ZSTD=y: Elapsed (wall clock) time (h:mm:ss or m:ss): 0:59.69 373M vmlinux 21.4% 81.4Mi 0.0% 0 .debug_info 2.3% 8.85Mi 0.0% 0 .debug_loclists 1.5% 5.71Mi 0.0% 0 .debug_line 0.5% 1.95Mi 0.0% 0 .debug_str_offsets 0.4% 1.62Mi 0.0% 0 .debug_str That's only a 3.11% overall binary size savings over zlib, but at no performance regression. Link: https://maskray.me/blog/2022-09-09-zstd-compressed-debug-sections Link: https://maskray.me/blog/2022-01-23-compressed-debug-sections Suggested-by: Sedat Dilek (DHL Supply Chain) <[email protected]> Reviewed-by: Nathan Chancellor <[email protected]> Signed-off-by: Nick Desaulniers <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2022-09-28Kbuild: add Rust supportMiguel Ojeda1-0/+8
Having most of the new files in place, we now enable Rust support in the build system, including `Kconfig` entries related to Rust, the Rust configuration printer and a few other bits. Reviewed-by: Kees Cook <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Tested-by: Nick Desaulniers <[email protected]> Reviewed-by: Greg Kroah-Hartman <[email protected]> Co-developed-by: Alex Gaynor <[email protected]> Signed-off-by: Alex Gaynor <[email protected]> Co-developed-by: Finn Behrens <[email protected]> Signed-off-by: Finn Behrens <[email protected]> Co-developed-by: Adam Bratschi-Kaye <[email protected]> Signed-off-by: Adam Bratschi-Kaye <[email protected]> Co-developed-by: Wedson Almeida Filho <[email protected]> Signed-off-by: Wedson Almeida Filho <[email protected]> Co-developed-by: Michael Ellerman <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Co-developed-by: Sven Van Asbroeck <[email protected]> Signed-off-by: Sven Van Asbroeck <[email protected]> Co-developed-by: Gary Guo <[email protected]> Signed-off-by: Gary Guo <[email protected]> Co-developed-by: Boris-Chengbiao Zhou <[email protected]> Signed-off-by: Boris-Chengbiao Zhou <[email protected]> Co-developed-by: Boqun Feng <[email protected]> Signed-off-by: Boqun Feng <[email protected]> Co-developed-by: Douglas Su <[email protected]> Signed-off-by: Douglas Su <[email protected]> Co-developed-by: Dariusz Sosnowski <[email protected]> Signed-off-by: Dariusz Sosnowski <[email protected]> Co-developed-by: Antonio Terceiro <[email protected]> Signed-off-by: Antonio Terceiro <[email protected]> Co-developed-by: Daniel Xu <[email protected]> Signed-off-by: Daniel Xu <[email protected]> Co-developed-by: Björn Roy Baron <[email protected]> Signed-off-by: Björn Roy Baron <[email protected]> Co-developed-by: Martin Rodriguez Reboredo <[email protected]> Signed-off-by: Martin Rodriguez Reboredo <[email protected]> Signed-off-by: Miguel Ojeda <[email protected]>
2022-09-24Makefile.debug: re-enable debug info for .S filesNick Desaulniers1-10/+11
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") Link: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=31bf18645d98b4d3d7357353be840e320649a67d Fixes: b8a9092330da ("Kbuild: do not emit debug info for assembly with LLVM_IAS=1") Reported-by: Alexey Alexandrov <[email protected]> Reported-by: Bill Wendling <[email protected]> Reported-by: Greg Thelen <[email protected]> Reviewed-by: Nathan Chancellor <[email protected]> Suggested-by: Masahiro Yamada <[email protected]> Signed-off-by: Nick Desaulniers <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2022-09-24Makefile.debug: set -g unconditional on CONFIG_DEBUG_INFO_SPLITNick Desaulniers1-3/+1
Dmitrii, Fangrui, and Mashahiro note: Before GCC 11 and Clang 12 -gsplit-dwarf implicitly uses -g2. Fix CONFIG_DEBUG_INFO_SPLIT for gcc-11+ & clang-12+ which now need -g specified in order for -gsplit-dwarf to work at all. -gsplit-dwarf has been mutually exclusive with -g since support for CONFIG_DEBUG_INFO_SPLIT was introduced in commit 866ced950bcd ("kbuild: Support split debug info v4") I don't think it ever needed to be. Link: https://lore.kernel.org/lkml/[email protected]/ Link: https://lore.kernel.org/lkml/CAK7LNARPAmsJD5XKAw7m_X2g7Fi-CAAsWDQiP7+ANBjkg7R7ng@mail.gmail.com/ Link: https://reviews.llvm.org/D80391 Cc: Andi Kleen <[email protected]> Reported-by: Dmitrii Bundin <[email protected]> Reported-by: Fangrui Song <[email protected]> Reported-by: Masahiro Yamada <[email protected]> Suggested-by: Dmitrii Bundin <[email protected]> Reviewed-by: Nathan Chancellor <[email protected]> Signed-off-by: Nick Desaulniers <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2021-10-24kbuild: split DEBUG_CFLAGS out to scripts/Makefile.debugMasahiro Yamada1-0/+33
To slim down the top Makefile, split out the code block surrounded by ifdef CONFIG_DEBUG_INFO ... endif. Signed-off-by: Masahiro Yamada <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Reviewed-by: Sedat Dilek <[email protected]>
Powered by cgit, Gruvboxed by Blaster4385.