[PATCH v5 00/21] Unify and , remove EXPORT_DATA_SYMBOL(), faster TRIM_UNUSED_KSYMS

Masahiro Yamada
2023-05-14T15:27:51Z

This patch set refactors modpost first to make it easier to
add new code.

My goals:

- Refactors EXPORT_SYMBOL, <linux/export.h> and <asm/export.h>.
You can still put EXPORT_SYMBOL() in *.S file, very close to the definition,
but you do not need to care about whether it is a function or a data.
This removes EXPORT_DATA_SYMBOL().

- Re-implement TRIM_UNUSED_KSYMS in one-pass.
This makes the building faster.

- Move the static EXPORT_SYMBOL check to modpost.
This also makes the building faster.

Previous version
v4: https://lore.kernel.org/linux-kbuild/CAK7LNASDzy9RERN6+q6WgR4ROYZQue=SBqgbcoYuVePByHtk6Q@mail.gmail.com/T/#t
v3: https://lore.kernel.org/all/20220928063947.299333-1-masahiroy@kernel.org/

Masahiro Yamada (21):
modpost: remove broken calculation of exception_table_entry size
modpost: remove fromsym info in __ex_table section mismatch warning
modpost: remove get_prettyname()
modpost: squash report_extable_warnings() into
extable_mismatch_handler()
modpost: squash report_sec_mismatch() into default_mismatch_handler()
modpost: clean up is_executable_section()
modpost: squash extable_mismatch_handler() into
default_mismatch_handler()
modpost: pass 'tosec' down to default_mismatch_handler()
modpost: pass section index to find_elf_symbol2()
modpost: rename find_elf_symbol() and find_elf_symbol2()
modpost: modpost: refactor find_fromsym() and find_tosym()
modpost: unify 'sym' and 'to' in default_mismatch_handler()
modpost: replace r->r_offset, r->r_addend with faddr, taddr
modpost: remove is_shndx_special() check from section_rel(a)
modpost: pass struct module pointer to check_section_mismatch()
kbuild: generate KSYMTAB entries by modpost
ia64,export.h: replace EXPORT_DATA_SYMBOL* with EXPORT_SYMBOL*
modpost: check static EXPORT_SYMBOL* by modpost again
modpost: squash sym_update_namespace() into sym_add_exported()
modpost: use null string instead of NULL pointer for default namespace
kbuild: implement CONFIG_TRIM_UNUSED_KSYMS without recursion

.gitignore | 1 -
Makefile | 19 +-
arch/ia64/include/asm/Kbuild | 1 +
arch/ia64/include/asm/export.h | 3 -
arch/ia64/kernel/head.S | 2 +-
arch/ia64/kernel/ivt.S | 2 +-
include/asm-generic/export.h | 83 +----
include/asm-generic/vmlinux.lds.h | 1 +
include/linux/export-internal.h | 49 +++
include/linux/export.h | 119 ++-----
include/linux/pm.h | 8 +-
kernel/module/internal.h | 12 +
scripts/Makefile.build | 19 +-
scripts/Makefile.modpost | 7 +
scripts/adjust_autoksyms.sh | 73 ----
scripts/basic/fixdep.c | 3 +-
scripts/check-local-export | 70 ----
scripts/gen_ksymdeps.sh | 30 --
scripts/mod/modpost.c | 561 ++++++++++++------------------
scripts/mod/modpost.h | 1 +
scripts/remove-stale-files | 2 +
21 files changed, 343 insertions(+), 723 deletions(-)
delete mode 100644 arch/ia64/include/asm/export.h
delete mode 100755 scripts/adjust_autoksyms.sh
delete mode 100755 scripts/check-local-export
delete mode 100755 scripts/gen_ksymdeps.sh

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2.39.2