linux-kernel - [PATCH v2 00/26] kbuild: yet another series of cleanups (modpost and LTO)

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Date:   Sun,  1 May 2022 17:40:06 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>, llvm@...ts.linux.dev
Subject: [PATCH v2 00/26] kbuild: yet another series of cleanups (modpost and LTO)


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

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 (26):
  modpost: use bool type where appropriate
  modpost: change mod->gpl_compatible to bool type
  modpost: import include/linux/list.h
  modpost: traverse modules in order
  modpost: add sym_add_unresolved() helper
  modpost: traverse unresolved symbols in order
  modpost: use doubly linked list for dump_lists
  modpost: traverse the namespace_list in order
  modpost: dump Module.symvers in the same order of modules.order
  modpost: move static EXPORT_SYMBOL check to check_exports()
  modpost: make multiple export error
  modpost: make sym_add_exported() always allocate a new symbol
  modpost: split new_symbol() to symbol allocation and hash table
    addition
  modpost: mitigate false-negatives for static EXPORT_SYMBOL checks
  kbuild: record symbol versions in *.cmd files
  kbuild: generate a list of objects in vmlinux
  modpost: extract symbol versions from *.cmd files
  modpost: generate linker script to collect symbol versions
  kbuild: embed symbol versions at final link of vmlinux or modules
  kbuild: stop merging *.symversions
  genksyms: adjust the output format for .cmd files
  kbuild: do not create *.prelink.o for Clang LTO or IBT
  kbuild: make built-in.a rule robust against too long argument error
  kbuild: make *.mod rule robust against too long argument error
  modpost: simplify the ->is_static initialization
  modpost: use hlist for hash table implementation

 .gitignore                  |   1 +
 Makefile                    |   1 +
 scripts/Kbuild.include      |   4 +
 scripts/Makefile.build      | 118 +++------
 scripts/Makefile.lib        |   7 -
 scripts/Makefile.modfinal   |   6 +-
 scripts/Makefile.modpost    |  10 +-
 scripts/genksyms/genksyms.c |  17 +-
 scripts/link-vmlinux.sh     |  34 +--
 scripts/mod/file2alias.c    |   2 -
 scripts/mod/list.h          | 265 +++++++++++++++++++
 scripts/mod/modpost.c       | 501 ++++++++++++++++++++++--------------
 scripts/mod/modpost.h       |  24 +-
 scripts/mod/sumversion.c    |   8 +-
 14 files changed, 650 insertions(+), 348 deletions(-)
 create mode 100644 scripts/mod/list.h

-- 
2.32.0