Messages in this thread | | | From | Masahiro Yamada <> | Date | Tue, 3 Oct 2023 20:35:28 +0900 | Subject | Re: [PATCH] modpost: Optimize symbol search from linear to binary search |
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On Tue, Sep 26, 2023 at 9:40 PM Jack Brennen <jbrennen@google.com> wrote: > > Modify modpost to use binary search for converting addresses back > into symbol references. Previously it used linear search. > > This change saves a few seconds of wall time for defconfig builds, > but can save several minutes on allyesconfigs. > > Before: > $ make LLVM=1 -j128 allyesconfig vmlinux -s KCFLAGS="-Wno-error" > $ time scripts/mod/modpost -M -m -a -N -o vmlinux.symvers vmlinux.o > 198.38user 1.27system 3:19.71elapsed > > After: > $ make LLVM=1 -j128 allyesconfig vmlinux -s KCFLAGS="-Wno-error" > $ time scripts/mod/modpost -M -m -a -N -o vmlinux.symvers vmlinux.o > 11.91user 0.85system 0:12.78elapsed > > Signed-off-by: Jack Brennen <jbrennen@google.com> > Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Applied to linux-kbuild. Thanks.
-- Best Regards Masahiro Yamada
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