From: kernel test robot <lkp@intel.com>
To: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: oe-kbuild-all@lists.linux.dev, linuxppc-dev@lists.ozlabs.org,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>
Subject: [powerpc:fixes-test 10/12] kernel/sched/core.c:7449:1: error: parameter names (without types) in function declaration
Date: Sat, 11 Jul 2026 14:08:44 +0800 [thread overview]
Message-ID: <202607111437.4PFwCibd-lkp@intel.com> (raw)
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-mvme5100_defconfig (https://download.01.org/0day-ci/archive/20260711/202607111437.4PFwCibd-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260711/202607111437.4PFwCibd-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/202607111437.4PFwCibd-lkp@intel.com/
All errors (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' [-Wimplicit-int]
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: error: parameter names (without types) in function declaration [-Wdeclaration-missing-parameter-type]
7449 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule);
| ^~~~~~~~~~~~~~~~~~~~~~~~
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' [-Wimplicit-int]
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: error: parameter names (without types) in function declaration [-Wdeclaration-missing-parameter-type]
7522 | EXPORT_STATIC_CALL_TRAMP(preempt_schedule_notrace);
| ^~~~~~~~~~~~~~~~~~~~~~~~
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' [-Wimplicit-int]
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: error: parameter names (without types) in function declaration [-Wdeclaration-missing-parameter-type]
7769 | EXPORT_STATIC_CALL_TRAMP(cond_resched);
| ^~~~~~~~~~~~~~~~~~~~~~~~
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' [-Wimplicit-int]
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: error: parameter names (without types) in function declaration [-Wdeclaration-missing-parameter-type]
7774 | EXPORT_STATIC_CALL_TRAMP(might_resched);
| ^~~~~~~~~~~~~~~~~~~~~~~~
vim +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>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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