From: kernel test robot <lkp@intel.com>
To: Lyude Paul <lyude@redhat.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Boqun Feng <boqun@kernel.org>, Benno Lossin <lossin@kernel.org>,
Andreas Hindborg <a.hindborg@kernel.org>,
Gary Guo <gary@garyguo.net>
Subject: [boqun:rust-rcu 14/27] rust/helpers/interrupt.c:17:9: warning: static function 'arch_local_save_flags' is used in an inline function with external linkage
Date: Mon, 13 Jul 2026 12:45:07 +0800 [thread overview]
Message-ID: <202607131219.euJHPSJ5-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git rust-rcu
head: dcecd5f6e71e2437c8abe333ee2426fbe63e6398
commit: 27e30521043c39ca18ea3e28f825f9c7bd30b580 [14/27] rust: Introduce interrupt module
config: s390-randconfig-002-20260713 (https://download.01.org/0day-ci/archive/20260713/202607131219.euJHPSJ5-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260713/202607131219.euJHPSJ5-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607131219.euJHPSJ5-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from rust/helpers/helpers.c:68:
>> rust/helpers/interrupt.c:17:9: warning: static function 'arch_local_save_flags' is used in an inline function with external linkage [-Wstatic-in-inline]
17 | return irqs_disabled();
| ^
include/linux/irqflags.h:256:3: note: expanded from macro 'irqs_disabled'
256 | raw_local_save_flags(_flags); \
| ^
include/linux/irqflags.h:184:11: note: expanded from macro 'raw_local_save_flags'
184 | flags = arch_local_save_flags(); \
| ^
rust/helpers/interrupt.c:15:1: note: use 'static' to give inline function 'rust_helper_irqs_disabled' internal linkage
15 | __rust_helper bool rust_helper_irqs_disabled(void)
| ^
| static
rust/helpers/helpers.c:38:23: note: expanded from macro '__rust_helper'
38 | #define __rust_helper __always_inline
| ^
include/linux/compiler_attributes.h:55:41: note: expanded from macro '__always_inline'
55 | #define __always_inline inline __attribute__((__always_inline__))
| ^
include/linux/compiler_types.h:235:16: note: expanded from macro 'inline'
235 | #define inline inline __gnu_inline __inline_maybe_unused notrace
| ^
arch/s390/include/asm/irqflags.h:46:48: note: 'arch_local_save_flags' declared here
46 | static arch_local_irq_attributes unsigned long arch_local_save_flags(void)
| ^
1 warning generated.
--
In file included from rust/helpers/helpers.c:68:
>> rust/helpers/interrupt.c:17:9: warning: static function 'arch_local_save_flags' is used in an inline function with external linkage [-Wstatic-in-inline]
17 | return irqs_disabled();
| ^
include/linux/irqflags.h:256:3: note: expanded from macro 'irqs_disabled'
256 | raw_local_save_flags(_flags); \
| ^
include/linux/irqflags.h:184:11: note: expanded from macro 'raw_local_save_flags'
184 | flags = arch_local_save_flags(); \
| ^
rust/helpers/interrupt.c:15:1: note: use 'static' to give inline function 'rust_helper_irqs_disabled' internal linkage
15 | __rust_helper bool rust_helper_irqs_disabled(void)
| ^
| static
rust/helpers/helpers.c:38:23: note: expanded from macro '__rust_helper'
38 | #define __rust_helper __always_inline
| ^
include/linux/compiler_attributes.h:55:41: note: expanded from macro '__always_inline'
55 | #define __always_inline inline __attribute__((__always_inline__))
| ^
include/linux/compiler_types.h:235:16: note: expanded from macro 'inline'
235 | #define inline inline __gnu_inline __inline_maybe_unused notrace
| ^
arch/s390/include/asm/irqflags.h:46:48: note: 'arch_local_save_flags' declared here
46 | static arch_local_irq_attributes unsigned long arch_local_save_flags(void)
| ^
1 warning generated.
warning: 1 warning emitted
vim +/arch_local_save_flags +17 rust/helpers/interrupt.c
14
15 __rust_helper bool rust_helper_irqs_disabled(void)
16 {
> 17 return irqs_disabled();
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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