[tglx-devel:irqflags 2/20] rust/helpers/interrupt.c:7:2: error: call to undeclared function 'local_interrupt_disable'; ISO C99 and later do not support implicit function declarations

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git irqflags
head:   59394501f5a285ef270931207a67d2f129403151
commit: 80deadb1a815addda89fa7d485109a13b4a851a7 [2/20] Revert: irq,spin_lock: Add counted interrupt disabling/enabling
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20260829/202608290725.a5kydlkP-lkp@intel.com/config)
compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260829/202608290725.a5kydlkP-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/202608290725.a5kydlkP-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from rust/helpers/helpers.c:69:
>> rust/helpers/interrupt.c:7:2: error: call to undeclared function 'local_interrupt_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
       7 |         local_interrupt_disable();
         |         ^
>> rust/helpers/interrupt.c:12:2: error: call to undeclared function 'local_interrupt_enable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      12 |         local_interrupt_enable();
         |         ^
   In file included from rust/helpers/helpers.c:97:
>> rust/helpers/spinlock.c:42:2: error: call to undeclared function 'spin_lock_irq_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      42 |         spin_lock_irq_disable(lock);
         |         ^
   rust/helpers/spinlock.c:42:2: note: did you mean 'arch_local_irq_disable'?
   arch/x86/include/asm/irqflags.h:112:29: note: 'arch_local_irq_disable' declared here
     112 | static __always_inline void arch_local_irq_disable(void)
         |                             ^
   In file included from rust/helpers/helpers.c:97:
>> rust/helpers/spinlock.c:47:2: error: call to undeclared function 'spin_unlock_irq_enable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      47 |         spin_unlock_irq_enable(lock);
         |         ^
   rust/helpers/spinlock.c:47:2: note: did you mean 'spin_unlock_irqrestore'?
   include/linux/spinlock.h:405:29: note: 'spin_unlock_irqrestore' declared here
     405 | static __always_inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
         |                             ^
   In file included from rust/helpers/helpers.c:97:
>> rust/helpers/spinlock.c:52:9: error: call to undeclared function 'spin_trylock_irq_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      52 |         return spin_trylock_irq_disable(lock);
         |                ^
   rust/helpers/spinlock.c:52:9: note: did you mean '_spin_trylock_irqsave'?
   include/linux/spinlock.h:423:29: note: '_spin_trylock_irqsave' declared here
     423 | static __always_inline bool _spin_trylock_irqsave(spinlock_t *lock, unsigned long *flags)
         |                             ^
   5 errors generated.
--
>> rust/helpers/interrupt.c:7:2: error: call to undeclared function 'local_interrupt_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers/interrupt.c:12:2: error: call to undeclared function 'local_interrupt_enable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers/spinlock.c:42:2: error: call to undeclared function 'spin_lock_irq_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers/spinlock.c:47:2: error: call to undeclared function 'spin_unlock_irq_enable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers/spinlock.c:52:9: error: call to undeclared function 'spin_trylock_irq_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> Unable to generate bindings: clang diagnosed error: rust/helpers/interrupt.c:7:2: error: call to undeclared function 'local_interrupt_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers/interrupt.c:12:2: error: call to undeclared function 'local_interrupt_enable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers/spinlock.c:42:2: error: call to undeclared function 'spin_lock_irq_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers/spinlock.c:47:2: error: call to undeclared function 'spin_unlock_irq_enable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers/spinlock.c:52:9: error: call to undeclared function 'spin_trylock_irq_disable'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]


vim +/local_interrupt_disable +7 rust/helpers/interrupt.c

c1f0451ec748f7 Lyude Paul 2026-08-07   4  
c1f0451ec748f7 Lyude Paul 2026-08-07   5  __rust_helper void rust_helper_local_interrupt_disable(void)
c1f0451ec748f7 Lyude Paul 2026-08-07   6  {
c1f0451ec748f7 Lyude Paul 2026-08-07  @7  	local_interrupt_disable();
c1f0451ec748f7 Lyude Paul 2026-08-07   8  }
c1f0451ec748f7 Lyude Paul 2026-08-07   9  
c1f0451ec748f7 Lyude Paul 2026-08-07  10  __rust_helper void rust_helper_local_interrupt_enable(void)
c1f0451ec748f7 Lyude Paul 2026-08-07  11  {
c1f0451ec748f7 Lyude Paul 2026-08-07 @12  	local_interrupt_enable();

:::::: The code at line 7 was first introduced by commit
:::::: c1f0451ec748f7a58a4e50bcb8f75bd89718be78 rust: Introduce interrupt module

:::::: TO: Lyude Paul <lyude@redhat.com>
:::::: CC: Peter Zijlstra <peterz@infradead.org>

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