On Sat, Sep 24, 2022 at 11:20 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> - Link vmlinux and modules in parallel
I was curious if this resulted in an observable improvement. N=1
Mainline:
$ /usr/bin/time -v make ARCH=arm64 LLVM=1 -j128 -s
Elapsed (wall clock) time (h:mm:ss or m:ss): 2:15.68
With this series:
$ /usr/bin/time -v make ARCH=arm64 LLVM=1 -j128 -s
Elapsed (wall clock) time (h:mm:ss or m:ss): 2:12.22
I'll take it!
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
> - Remove head-y syntax
>
>
> Masahiro Yamada (7):
> kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package
> kbuild: list sub-directories in ./Kbuild
> kbuild: move .vmlinux.objs rule to Makefile.modpost
> kbuild: move vmlinux.o rule to the top Makefile
> kbuild: unify two modpost invocations
> kbuild: use obj-y instead extra-y for objects placed at the head
> kbuild: remove head-y syntax
>
> Documentation/kbuild/makefiles.rst | 27 +----
> Kbuild | 24 ++++
> Makefile | 119 +++++++++++---------
> arch/alpha/Makefile | 2 -
> arch/alpha/kernel/Makefile | 4 +-
> arch/arc/Makefile | 2 -
> arch/arc/kernel/Makefile | 4 +-
> arch/arm/Makefile | 3 -
> arch/arm/kernel/Makefile | 4 +-
> arch/arm64/Makefile | 3 -
> arch/arm64/kernel/Makefile | 4 +-
> arch/csky/Makefile | 2 -
> arch/csky/kernel/Makefile | 4 +-
> arch/hexagon/Makefile | 2 -
> arch/hexagon/kernel/Makefile | 3 +-
> arch/ia64/Makefile | 1 -
> arch/ia64/kernel/Makefile | 4 +-
> arch/loongarch/Makefile | 2 -
> arch/loongarch/kernel/Makefile | 4 +-
> arch/m68k/68000/Makefile | 2 +-
> arch/m68k/Makefile | 9 --
> arch/m68k/coldfire/Makefile | 2 +-
> arch/m68k/kernel/Makefile | 23 ++--
> arch/microblaze/Makefile | 1 -
> arch/microblaze/kernel/Makefile | 4 +-
> arch/mips/Makefile | 2 -
> arch/mips/kernel/Makefile | 4 +-
> arch/nios2/Makefile | 1 -
> arch/nios2/kernel/Makefile | 2 +-
> arch/openrisc/Makefile | 2 -
> arch/openrisc/kernel/Makefile | 4 +-
> arch/parisc/Makefile | 2 -
> arch/parisc/kernel/Makefile | 4 +-
> arch/powerpc/Makefile | 12 --
> arch/powerpc/kernel/Makefile | 20 ++--
> arch/riscv/Makefile | 2 -
> arch/riscv/kernel/Makefile | 2 +-
> arch/s390/Makefile | 2 -
> arch/s390/kernel/Makefile | 4 +-
> arch/sh/Makefile | 2 -
> arch/sh/kernel/Makefile | 4 +-
> arch/sparc/Makefile | 2 -
> arch/sparc/kernel/Makefile | 3 +-
> arch/x86/Makefile | 5 -
> arch/x86/kernel/Makefile | 10 +-
> arch/xtensa/Makefile | 2 -
> arch/xtensa/kernel/Makefile | 4 +-
> scripts/Makefile.lib | 2 +
> scripts/Makefile.modfinal | 2 +-
> scripts/Makefile.modpost | 112 ++++++++----------
> scripts/Makefile.package | 5 +-
> scripts/Makefile.vmlinux_o | 6 +-
> scripts/clang-tools/gen_compile_commands.py | 19 +---
> scripts/head-object-list.txt | 53 +++++++++
> scripts/link-vmlinux.sh | 34 +-----
> 55 files changed, 273 insertions(+), 314 deletions(-)
> create mode 100644 scripts/head-object-list.txt
>
> --
> 2.34.1
>
--
Thanks,
~Nick Desaulniers