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From: Safocl Stollmannovic <safocl88@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH v2 00/10] Remove redundant extern declarations
Date: Fri, 13 Nov 2026 05:06:05 +0400	[thread overview]
Message-ID: <20261113010631.139191-1-safocl88@gmail.com> (raw)

This series removes unnecessary extern keywords from function declarations
that use asmlinkage across various architectures and core subsystems.

In C, function declarations at file scope have external linkage by
default, making the explicit extern keyword redundant. Additionally,
asmlinkage already expands to extern "C" when __cplusplus is defined,
so combining it with extern results in duplicate linkage specifiers.

Changes in v2:
- Fix commit messages corrupted by shell expansion in v1.
- Clarify the rationale based on C linkage rules and asmlinkage macro
  expansion rather than C++ module compilation.
- Format the Bugzilla URL using the standard Link: tag.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=222257

Safocl Stollmannovic (10):
  ARM: fix duplicate extern declarations
  loongarch: fix duplicate extern declarations
  microblaze: fix duplicate extern declarations
  MIPS: fix duplicate extern declarations
  openrisc: fix duplicate extern declarations
  riscv: fix duplicate extern declarations
  x86: fix duplicate extern declarations
  drivers: fix duplicate extern declarations
  sched/preempt: fix duplicate extern declarations
  kernel: fix duplicate extern declarations

 arch/arm/include/asm/bug.h                |  2 +-
 arch/arm/include/asm/opcodes.h            |  2 +-
 arch/loongarch/include/asm/idle.h         |  2 +-
 arch/loongarch/include/asm/smp.h          |  4 +-
 arch/loongarch/include/asm/switch_to.h    |  2 +-
 arch/microblaze/include/asm/entry.h       |  2 +-
 arch/microblaze/kernel/microblaze_ksyms.c |  2 +-
 arch/mips/cavium-octeon/setup.c           |  2 +-
 arch/mips/include/asm/bmips.h             |  2 +-
 arch/mips/include/asm/idle.h              |  2 +-
 arch/mips/include/asm/paccess.h           |  4 +-
 arch/mips/include/asm/ptrace.h            |  4 +-
 arch/mips/include/asm/smp.h               |  2 +-
 arch/mips/include/asm/switch_to.h         |  2 +-
 arch/mips/kernel/r4k-bugs64.c             |  2 +-
 arch/mips/kernel/signal-common.h          |  8 ++--
 arch/mips/kernel/traps.c                  | 50 +++++++++++------------
 arch/openrisc/kernel/process.c            |  2 +-
 arch/riscv/include/asm/string.h           | 24 +++++------
 arch/riscv/kernel/process.c               |  4 +-
 arch/riscv/kernel/stacktrace.c            |  2 +-
 arch/x86/include/asm/efi.h                |  2 +-
 arch/x86/include/asm/gsseg.h              |  2 +-
 arch/x86/include/asm/preempt.h            |  8 ++--
 arch/x86/include/asm/processor.h          |  2 +-
 arch/x86/include/asm/suspend.h            |  2 +-
 arch/x86/um/sys_call_table_32.c           |  4 +-
 arch/x86/um/sys_call_table_64.c           |  4 +-
 drivers/soc/bcm/brcmstb/pm/pm.h           |  6 +--
 include/asm-generic/preempt.h             |  4 +-
 include/linux/lockdep.h                   |  2 +-
 include/linux/printk.h                    |  6 +--
 include/linux/sched/task.h                |  2 +-
 include/linux/start_kernel.h              |  2 +-
 include/linux/suspend.h                   |  4 +-
 35 files changed, 88 insertions(+), 88 deletions(-)

--
2.56.1

             reply	other threads:[~2026-11-13  1:06 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-13  1:06 Safocl Stollmannovic [this message]
2026-11-13  1:06 ` [PATCH v2 01/10] ARM: fix duplicate " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 02/10] loongarch: " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 03/10] microblaze: " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 04/10] MIPS: " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 05/10] openrisc: " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 06/10] riscv: " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 07/10] x86: " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 08/10] drivers: " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 09/10] sched/preempt: " Safocl Stollmannovic
2026-11-13  1:06 ` [PATCH v2 10/10] kernel: " Safocl Stollmannovic

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