linux-hardening - [PATCH v4 0/2] shrink lib/string.i via IWYU

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Date: Tue, 19 Dec 2023 18:09:50 +0000
From: Tanzir Hasan <tanzirh@...gle.com>
To: Kees Cook <keescook@...omium.org>, Nick DeSaulniers <nnn@...gle.com>
Cc: Andy Shevchenko <andy@...nel.org>, linux-hardening@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, 
	llvm@...ts.linux.dev, Al Viro <viro@...iv.linux.org.uk>, 
	Andy Shevchenko <andy.shevchenko@...il.com>, Tanzir Hasan <tanzirh@...gle.com>
Subject: [PATCH v4 0/2] shrink lib/string.i via IWYU

This patch series changes the include list of string.c to minimize
the preprocessing size. The patch series intends to remove REPEAT_BYE
from kernel.h and move it into its own header file because
word-at-a-time.h has an implicit dependancy on it but it is declared
in kernel.h which is bloated.

---

---
Changes in v4:
- Fixed personal email client so name appears instead of just email
- Removed kernel.h where not needed.
- Sorted include list in lib/string.c and used linux/limits.h
- Link to v3: https://lore.kernel.org/r/20231218-libstringheader-v3-0-500bd58f0f75@google.com

Changes in v3:
- Moved REPEAT_BYTE out of kernel.h and into wordpart.h.
- Included wordpart.h where REPEAT_BYTE was necessary.
- Link to v2: https://lore.kernel.org/r/20231214-libstringheader-v2-0-0f195dcff204@google.com

Changes in v2:
- Transformed into a patch series
- Changed asm inclusions to linux inclusions
- added a patch to sh
- Link to v1: https://lore.kernel.org/r/20231205-libstringheader-v1-1-7f9c573053a7@gmail.com

---
Tanzir Hasan (2):
      kernel.h: removed REPEAT_BYTE from kernel.h
      lib/string: shrink lib/string.i via IWYU

 arch/arm/include/asm/word-at-a-time.h     |  2 +-
 arch/arm64/include/asm/word-at-a-time.h   |  2 +-
 arch/powerpc/include/asm/word-at-a-time.h |  2 +-
 arch/riscv/include/asm/word-at-a-time.h   |  2 +-
 arch/s390/include/asm/word-at-a-time.h    |  2 +-
 arch/sh/include/asm/word-at-a-time.h      |  1 +
 arch/x86/include/asm/word-at-a-time.h     |  1 +
 fs/namei.c                                |  2 +-
 include/asm-generic/word-at-a-time.h      |  2 +-
 include/linux/kernel.h                    |  7 -------
 include/linux/wordpart.h                  | 17 +++++++++++++++++
 lib/string.c                              | 17 +++++++++--------
 12 files changed, 35 insertions(+), 22 deletions(-)
---
base-commit: ceb6a6f023fd3e8b07761ed900352ef574010bcb
change-id: 20231204-libstringheader-e238e2af5eec

Best regards,
-- 
Tanzir Hasan <tanzirh@...gle.com>