[powerpc:fixes-test 10/12] kernel/sched/core.c:7449:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git fixes-test
head:   afc2830892a128a13a65f677271a0a48aeb61b5e
commit: 4747e17fe063720a30b1c0075bae3e8f8acd26f4 [10/12] powerpc/32: Use HAVE_PREEMPT_DYNAMIC_CALL instead of HAVE_PREEMPT_DYNAMIC_KEY
config: powerpc-randconfig-002-20260711 (https://download.01.org/0day-ci/archive/20260711/202607110422.frjmJOf8-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260711/202607110422.frjmJOf8-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/202607110422.frjmJOf8-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/sched/core.c:7449:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
    7449 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule);
         | ^
   include/linux/static_call.h:223:2: note: expanded from macro 'EXPORT_STATIC_CALL_TRAMP'
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^
>> kernel/sched/core.c:7449:26: error: a parameter list without types is only allowed in a function definition
    7449 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule);
         |                          ^
   kernel/sched/core.c:7522:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
    7522 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule_notrace);
         | ^
   include/linux/static_call.h:223:2: note: expanded from macro 'EXPORT_STATIC_CALL_TRAMP'
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^
   kernel/sched/core.c:7522:26: error: a parameter list without types is only allowed in a function definition
    7522 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule_notrace);
         |                          ^
   kernel/sched/core.c:7769:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
    7769 | EXPORT_STATIC_CALL_TRAMP(cond_resched);
         | ^
   include/linux/static_call.h:223:2: note: expanded from macro 'EXPORT_STATIC_CALL_TRAMP'
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^
   kernel/sched/core.c:7769:26: error: a parameter list without types is only allowed in a function definition
    7769 | EXPORT_STATIC_CALL_TRAMP(cond_resched);
         |                          ^
   kernel/sched/core.c:7774:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
    7774 | EXPORT_STATIC_CALL_TRAMP(might_resched);
         | ^
   include/linux/static_call.h:223:2: note: expanded from macro 'EXPORT_STATIC_CALL_TRAMP'
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^
   kernel/sched/core.c:7774:26: error: a parameter list without types is only allowed in a function definition
    7774 | EXPORT_STATIC_CALL_TRAMP(might_resched);
         |                          ^
   8 errors generated.


vim +/int +7449 kernel/sched/core.c

009f60e2763568 Oleg Nesterov          2014-10-05  7441  
2c9a98d3bc8087 Peter Zijlstra (Intel  2021-01-18  7442) #ifdef CONFIG_PREEMPT_DYNAMIC
b7ebb758568b60 Ingo Molnar            2025-05-28  7443  # ifdef CONFIG_HAVE_PREEMPT_DYNAMIC_CALL
8a69fe0be143b0 Mark Rutland           2022-02-14  7444  #  ifndef preempt_schedule_dynamic_enabled
8a69fe0be143b0 Mark Rutland           2022-02-14  7445  #   define preempt_schedule_dynamic_enabled	preempt_schedule
8a69fe0be143b0 Mark Rutland           2022-02-14  7446  #   define preempt_schedule_dynamic_disabled	NULL
8a69fe0be143b0 Mark Rutland           2022-02-14  7447  #  endif
8a69fe0be143b0 Mark Rutland           2022-02-14  7448  DEFINE_STATIC_CALL(preempt_schedule, preempt_schedule_dynamic_enabled);
ef72661e28c64a Peter Zijlstra         2021-01-25 @7449  EXPORT_STATIC_CALL_TRAMP(preempt_schedule);
99cf983cc8bca4 Mark Rutland           2022-02-14  7450  # elif defined(CONFIG_HAVE_PREEMPT_DYNAMIC_KEY)
99cf983cc8bca4 Mark Rutland           2022-02-14  7451  static DEFINE_STATIC_KEY_TRUE(sk_dynamic_preempt_schedule);
99cf983cc8bca4 Mark Rutland           2022-02-14  7452  void __sched notrace dynamic_preempt_schedule(void)
99cf983cc8bca4 Mark Rutland           2022-02-14  7453  {
99cf983cc8bca4 Mark Rutland           2022-02-14  7454  	if (!static_branch_unlikely(&sk_dynamic_preempt_schedule))
99cf983cc8bca4 Mark Rutland           2022-02-14  7455  		return;
99cf983cc8bca4 Mark Rutland           2022-02-14  7456  	preempt_schedule();
99cf983cc8bca4 Mark Rutland           2022-02-14  7457  }
99cf983cc8bca4 Mark Rutland           2022-02-14  7458  NOKPROBE_SYMBOL(dynamic_preempt_schedule);
99cf983cc8bca4 Mark Rutland           2022-02-14  7459  EXPORT_SYMBOL(dynamic_preempt_schedule);
99cf983cc8bca4 Mark Rutland           2022-02-14  7460  # endif
b7ebb758568b60 Ingo Molnar            2025-05-28  7461  #endif /* CONFIG_PREEMPT_DYNAMIC */
2c9a98d3bc8087 Peter Zijlstra (Intel  2021-01-18  7462) 

:::::: The code at line 7449 was first introduced by commit
:::::: ef72661e28c64ad610f89acc2832ec67b27ba438 sched: Harden PREEMPT_DYNAMIC

:::::: TO: Peter Zijlstra <peterz@infradead.org>
:::::: CC: Ingo Molnar <mingo@kernel.org>

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