On Tue, Sep 26, 2023 at 9:40 PM Jack Brennen <jbrennen@xxxxxxxxxx> 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@xxxxxxxxxx> > Tested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Applied to linux-kbuild. Thanks. -- Best Regards Masahiro Yamada
