linux-kernel - Re: [RFC PATCH v4 00/13] module: core code clean up

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Date:   Tue, 1 Feb 2022 08:44:21 -0800
From:   Allen <allen.lkml@...il.com>
To:     Aaron Tomlin <atomlin@...hat.com>
Cc:     Luis Chamberlain <mcgrof@...nel.org>,
        Christoph Lameter <cl@...ux.com>,
        Petr Mladek <pmladek@...e.com>,
        Miroslav Benes <mbenes@...e.cz>,
        Andrew Morton <akpm@...ux-foundation.org>, jeyu@...nel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-modules@...r.kernel.org, live-patching@...r.kernel.org,
        atomlin@...mlin.com, ghalat@...hat.com, void@...ifault.com,
        Joe Perches <joe@...ches.com>
Subject: Re: [RFC PATCH v4 00/13] module: core code clean up

Thanks Aaron for V4.

Build/boot test on qemu. Running more tests on BM.

Thanks.

On Sun, Jan 30, 2022 at 1:32 PM Aaron Tomlin <atomlin@...hat.com> wrote:
>
> Hi Luis,
>
> As per your suggestion [1], this is an attempt to refactor and split
> optional code out of core module support code into separate components.
> This version is based on branch mcgrof/modules-next since a97ac8cb24a3/or
> modules-5.17-rc1. Please let me know your thoughts.
>
> Changes since v1 [2]:
>
>   - Moved module version support code into a new file
>
> Changes since v2 [3]:
>
>  - Moved module decompress support to a separate file
>  - Made check_modinfo_livepatch() generic (Petr Mladek)
>  - Removed filename from each newly created file (Luis Chamberlain)
>  - Addressed some (i.e. --ignore=ASSIGN_IN_IF,AVOID_BUG was used)
>    minor scripts/checkpatch.pl concerns e.g., use strscpy over
>    strlcpy and missing a blank line after declarations (Allen)
>
> Changes since v3 [4]:
>
>  - Refactored both is_livepatch_module() and set_livepatch_module(),
>    respectively, to use IS_ENABLED(CONFIG_LIVEPATCH) (Joe Perches)
>  - Addressed various compiler warnings e.g., no previous prototype (0-day)
>
> [1]: https://lore.kernel.org/lkml/YbEZ4HgSYQEPuRmS@bombadil.infradead.org/
> [2]: https://lore.kernel.org/lkml/20211228213041.1356334-1-atomlin@redhat.com/
> [3]: https://lore.kernel.org/lkml/20220106234319.2067842-1-atomlin@redhat.com/
> [4]: https://lore.kernel.org/lkml/20220128203934.600247-1-atomlin@redhat.com/
>
> Aaron Tomlin (13):
>   module: Move all into module/
>   module: Simple refactor in preparation for split
>   module: Move livepatch support to a separate file
>   module: Move latched RB-tree support to a separate file
>   module: Move arch strict rwx support to a separate file
>   module: Move strict rwx support to a separate file
>   module: Move extra signature support out of core code
>   module: Move kmemleak support to a separate file
>   module: Move kallsyms support into a separate file
>   module: Move procfs support into a separate file
>   module: Move sysfs support into a separate file
>   module: Move kdb_modules list out of core code
>   module: Move version support into a separate file
>
>  MAINTAINERS                                   |    2 +-
>  include/linux/module.h                        |   64 +-
>  kernel/Makefile                               |    5 +-
>  kernel/debug/kdb/kdb_main.c                   |    5 +
>  kernel/module-internal.h                      |   50 -
>  kernel/module/Makefile                        |   20 +
>  kernel/module/arch_strict_rwx.c               |   44 +
>  kernel/module/debug_kmemleak.c                |   30 +
>  .../decompress.c}                             |    2 +-
>  kernel/module/internal.h                      |  236 +++
>  kernel/module/kallsyms.c                      |  502 +++++
>  kernel/module/livepatch.c                     |   74 +
>  kernel/{module.c => module/main.c}            | 1874 +----------------
>  kernel/module/procfs.c                        |  142 ++
>  .../signature.c}                              |    0
>  kernel/module/signing.c                       |  120 ++
>  kernel/module/strict_rwx.c                    |   83 +
>  kernel/module/sysfs.c                         |  425 ++++
>  kernel/module/tree_lookup.c                   |  109 +
>  kernel/module/version.c                       |  110 +
>  kernel/module_signing.c                       |   45 -
>  21 files changed, 2038 insertions(+), 1904 deletions(-)
>  delete mode 100644 kernel/module-internal.h
>  create mode 100644 kernel/module/Makefile
>  create mode 100644 kernel/module/arch_strict_rwx.c
>  create mode 100644 kernel/module/debug_kmemleak.c
>  rename kernel/{module_decompress.c => module/decompress.c} (99%)
>  create mode 100644 kernel/module/internal.h
>  create mode 100644 kernel/module/kallsyms.c
>  create mode 100644 kernel/module/livepatch.c
>  rename kernel/{module.c => module/main.c} (63%)
>  create mode 100644 kernel/module/procfs.c
>  rename kernel/{module_signature.c => module/signature.c} (100%)
>  create mode 100644 kernel/module/signing.c
>  create mode 100644 kernel/module/strict_rwx.c
>  create mode 100644 kernel/module/sysfs.c
>  create mode 100644 kernel/module/tree_lookup.c
>  create mode 100644 kernel/module/version.c
>  delete mode 100644 kernel/module_signing.c
>
>
> base-commit: a97ac8cb24a3c3ad74794adb83717ef1605d1b47
> --
> 2.34.1
>


-- 
       - Allen