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-001-20260711 
(https://download.01.org/0day-ci/archive/20260711/[email protected]/config)
compiler: powerpc-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): 
(https://download.01.org/0day-ci/archive/20260711/[email protected]/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 <[email protected]>
| Closes: 
https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

   In file included from include/linux/tracepoint.h:22,
                    from include/trace/syscall.h:5,
                    from include/linux/syscalls.h:95,
                    from include/linux/syscalls_api.h:1,
                    from kernel/sched/core.c:16:
>> include/linux/static_call.h:223:9: warning: data definition has no type or 
>> storage class
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7449:1: note: in expansion of macro 
'EXPORT_STATIC_CALL_TRAMP'
    7449 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule);
         | ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/static_call.h:223:9: error: type defaults to 'int' in 
declaration of 'ARCH_ADD_TRAMP_KEY' [-Werror=implicit-int]
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7449:1: note: in expansion of macro 
'EXPORT_STATIC_CALL_TRAMP'
    7449 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule);
         | ^~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/sched/core.c:7449:1: warning: parameter names (without types) in 
>> function declaration
   In file included from include/linux/tracepoint.h:22,
                    from include/trace/syscall.h:5,
                    from include/linux/syscalls.h:95,
                    from include/linux/syscalls_api.h:1,
                    from kernel/sched/core.c:16:
>> include/linux/static_call.h:223:9: warning: data definition has no type or 
>> storage class
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7522:1: note: in expansion of macro 
'EXPORT_STATIC_CALL_TRAMP'
    7522 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule_notrace);
         | ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/static_call.h:223:9: error: type defaults to 'int' in 
declaration of 'ARCH_ADD_TRAMP_KEY' [-Werror=implicit-int]
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7522:1: note: in expansion of macro 
'EXPORT_STATIC_CALL_TRAMP'
    7522 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule_notrace);
         | ^~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7522:1: warning: parameter names (without types) in 
function declaration
   In file included from include/linux/tracepoint.h:22,
                    from include/trace/syscall.h:5,
                    from include/linux/syscalls.h:95,
                    from include/linux/syscalls_api.h:1,
                    from kernel/sched/core.c:16:
>> include/linux/static_call.h:223:9: warning: data definition has no type or 
>> storage class
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7769:1: note: in expansion of macro 
'EXPORT_STATIC_CALL_TRAMP'
    7769 | EXPORT_STATIC_CALL_TRAMP(cond_resched);
         | ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/static_call.h:223:9: error: type defaults to 'int' in 
declaration of 'ARCH_ADD_TRAMP_KEY' [-Werror=implicit-int]
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7769:1: note: in expansion of macro 
'EXPORT_STATIC_CALL_TRAMP'
    7769 | EXPORT_STATIC_CALL_TRAMP(cond_resched);
         | ^~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7769:1: warning: parameter names (without types) in 
function declaration
   In file included from include/linux/tracepoint.h:22,
                    from include/trace/syscall.h:5,
                    from include/linux/syscalls.h:95,
                    from include/linux/syscalls_api.h:1,
                    from kernel/sched/core.c:16:
>> include/linux/static_call.h:223:9: warning: data definition has no type or 
>> storage class
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7774:1: note: in expansion of macro 
'EXPORT_STATIC_CALL_TRAMP'
    7774 | EXPORT_STATIC_CALL_TRAMP(might_resched);
         | ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/static_call.h:223:9: error: type defaults to 'int' in 
declaration of 'ARCH_ADD_TRAMP_KEY' [-Werror=implicit-int]
     223 |         ARCH_ADD_TRAMP_KEY(name)
         |         ^~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7774:1: note: in expansion of macro 
'EXPORT_STATIC_CALL_TRAMP'
    7774 | EXPORT_STATIC_CALL_TRAMP(might_resched);
         | ^~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sched/core.c:7774:1: warning: parameter names (without types) in 
function declaration
   cc1: some warnings being treated as errors


vim +223 include/linux/static_call.h

9183c3f9ed710a8 Josh Poimboeuf 2020-08-18  212  
9183c3f9ed710a8 Josh Poimboeuf 2020-08-18  213  #define 
EXPORT_STATIC_CALL(name)                                        \
9183c3f9ed710a8 Josh Poimboeuf 2020-08-18  214          
EXPORT_SYMBOL(STATIC_CALL_KEY(name));                           \
9183c3f9ed710a8 Josh Poimboeuf 2020-08-18  215          
EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
9183c3f9ed710a8 Josh Poimboeuf 2020-08-18  216  #define 
EXPORT_STATIC_CALL_GPL(name)                                    \
9183c3f9ed710a8 Josh Poimboeuf 2020-08-18  217          
EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name));                       \
9183c3f9ed710a8 Josh Poimboeuf 2020-08-18  218          
EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name))
9183c3f9ed710a8 Josh Poimboeuf 2020-08-18  219  
73f44fe19d35963 Josh Poimboeuf 2021-01-27  220  /* Leave the key unexported, so 
modules can't change static call targets: */
73f44fe19d35963 Josh Poimboeuf 2021-01-27  221  #define 
EXPORT_STATIC_CALL_TRAMP(name)                                  \
73f44fe19d35963 Josh Poimboeuf 2021-01-27  222          
EXPORT_SYMBOL(STATIC_CALL_TRAMP(name));                         \
73f44fe19d35963 Josh Poimboeuf 2021-01-27 @223          ARCH_ADD_TRAMP_KEY(name)
73f44fe19d35963 Josh Poimboeuf 2021-01-27  224  #define 
EXPORT_STATIC_CALL_TRAMP_GPL(name)                              \
73f44fe19d35963 Josh Poimboeuf 2021-01-27  225          
EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name));                     \
73f44fe19d35963 Josh Poimboeuf 2021-01-27  226          ARCH_ADD_TRAMP_KEY(name)
73f44fe19d35963 Josh Poimboeuf 2021-01-27  227  

:::::: The code at line 223 was first introduced by commit
:::::: 73f44fe19d359635a607e8e8daa0da4001c1cfc2 static_call: Allow module use 
without exposing static_call_key

:::::: TO: Josh Poimboeuf <[email protected]>
:::::: CC: Ingo Molnar <[email protected]>

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