[PATCH v3 00/15] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS)

Masahiro Yamada
2022-05-05T07:30:06Z

This is the third batch of cleanups in this development cycle.

Major changes in v3:

- Generate symbol CRCs as C code, and remove CONFIG_MODULE_REL_CRCS.

Major changes in v2:

- V1 did not work with CONFIG_MODULE_REL_CRCS.
I fixed this for v2.

- Reflect some review comments in v1

- Refactor the code more

- Avoid too long argument error

Masahiro Yamada (15):
modpost: mitigate false-negatives for static EXPORT_SYMBOL checks
modpost: change the license of EXPORT_SYMBOL to bool type
modpost: merge add_{intree_flag,retpoline,staging_flag} to add_header
modpost: move *.mod.c generation to write_mod_c_files()
kbuild: generate a list of objects in vmlinux
kbuild: record symbol versions in *.cmd files
modpost: extract symbol versions from *.cmd files
kbuild: link symbol CRCs at final link, removing
CONFIG_MODULE_REL_CRCS
kbuild: stop merging *.symversions
genksyms: adjust the output format to modpost
kbuild: do not create *.prelink.o for Clang LTO or IBT
modpost: simplify the ->is_static initialization
modpost: use hlist for hash table implementation
kbuild: make built-in.a rule robust against too long argument error
kbuild: make *.mod rule robust against too long argument error

arch/powerpc/Kconfig | 1 -
arch/s390/Kconfig | 1 -
arch/um/Kconfig | 1 -
include/asm-generic/export.h | 22 +-
include/linux/export.h | 30 +--
include/linux/symversion.h | 13 +
init/Kconfig | 4 -
kernel/module.c | 10 +-
scripts/Kbuild.include | 4 +
scripts/Makefile.build | 118 +++------
scripts/Makefile.lib | 7 -
scripts/Makefile.modfinal | 5 +-
scripts/Makefile.modpost | 9 +-
scripts/genksyms/genksyms.c | 18 +-
scripts/link-vmlinux.sh | 46 ++--
scripts/mod/file2alias.c | 2 -
scripts/mod/list.h | 52 ++++
scripts/mod/modpost.c | 449 ++++++++++++++++++++---------------
scripts/mod/modpost.h | 2 +
19 files changed, 402 insertions(+), 392 deletions(-)
create mode 100644 include/linux/symversion.h

--
2.32.0