Now CONFIG_TRIM_UNUSED_KSYMS is revived, but Linus is still unhappy about the build speed. I re-implemented this feature, and the build time cost is now almost unnoticeable level. (no changes since v1) Masahiro Yamada (4): export.h: make __ksymtab_strings per-symbol section kbuild: separate out vmlinux.lds generation kbuild: re-implement CONFIG_TRIM_UNUSED_KSYMS to make it work in one-pass kbuild: remove guarding from TRIM_UNUSED_KSYMS Makefile | 34 ++++----- arch/alpha/kernel/Makefile | 3 +- arch/arc/kernel/Makefile | 3 +- arch/arm/kernel/Makefile | 3 +- arch/arm64/kernel/Makefile | 3 +- arch/arm64/kvm/hyp/nvhe/hyp.lds.S | 1 + arch/csky/kernel/Makefile | 3 +- arch/h8300/kernel/Makefile | 2 +- arch/hexagon/kernel/Makefile | 3 +- arch/ia64/kernel/Makefile | 3 +- arch/m68k/kernel/Makefile | 2 +- arch/microblaze/kernel/Makefile | 3 +- arch/mips/kernel/Makefile | 3 +- arch/nds32/kernel/Makefile | 3 +- arch/nios2/kernel/Makefile | 2 +- arch/openrisc/kernel/Makefile | 3 +- arch/parisc/kernel/Makefile | 3 +- arch/powerpc/kernel/Makefile | 2 +- arch/powerpc/kernel/vdso32/vdso32.lds.S | 1 + arch/powerpc/kernel/vdso64/vdso64.lds.S | 1 + arch/riscv/kernel/Makefile | 2 +- arch/s390/kernel/Makefile | 3 +- arch/s390/purgatory/purgatory.lds.S | 1 + arch/sh/kernel/Makefile | 3 +- arch/sparc/kernel/Makefile | 2 +- arch/um/kernel/Makefile | 2 +- arch/x86/kernel/Makefile | 2 +- arch/xtensa/kernel/Makefile | 3 +- include/asm-generic/export.h | 25 +------ include/asm-generic/vmlinux.lds.h | 13 ++-- include/linux/export.h | 56 ++++---------- include/linux/ksyms.lds.h | 22 ++++++ init/Kconfig | 3 +- scripts/Makefile.build | 7 +- scripts/Makefile.lib | 1 + scripts/adjust_autoksyms.sh | 73 ------------------- .../{gen_autoksyms.sh => gen-keep-ksyms.sh} | 43 ++++++++--- scripts/gen_ksymdeps.sh | 25 ------- scripts/module.lds.S | 23 +++--- 39 files changed, 152 insertions(+), 238 deletions(-) create mode 100644 include/linux/ksyms.lds.h delete mode 100755 scripts/adjust_autoksyms.sh rename scripts/{gen_autoksyms.sh => gen-keep-ksyms.sh} (66%) delete mode 100755 scripts/gen_ksymdeps.sh -- 2.27.0