[kbuild-all] [luto:x86/kentry 1/10] kernel/sched/core.c:5394:49: error: use of undeclared identifier 'irqentry_exit_cond_resched'; did you mean

tree: https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/kentry head: b0d7a5e5a9b11a6ddb50b90e31877e3cb1f93362 commit: 5dcab84f1c3db061936e3d79f78222f9e89a33e2 [1/10] kentry: Rename irqentry to kentry config: x86_64-randconfig-a015-20210321 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 14696baaf4c43fe53f738bc292bbe169eed93d5d) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/commit/?id... git remote add luto https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git git fetch --no-tags luto x86/kentry git checkout 5dcab84f1c3db061936e3d79f78222f9e89a33e2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): kernel/sched/core.c:2831:6: warning: no previous prototype for function 'sched_set_stop_task' [-Wmissing-prototypes] void sched_set_stop_task(int cpu, struct task_struct *stop) ^ kernel/sched/core.c:2831:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void sched_set_stop_task(int cpu, struct task_struct *stop) ^ static static_call_update(irqentry_exit_cond_resched, irqentry_exit_cond_resched); ^~~~~~~~~~~~~~~~~~~~~~~~~~ kentry_exit_cond_resched include/linux/static_call.h:116:30: note: expanded from macro 'static_call_update' BUILD_BUG_ON(!__same_type(*(func), STATIC_CALL_TRAMP(name))); \ ^ include/linux/compiler_types.h:256:63: note: expanded from macro '__same_type' #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b)) ^ include/linux/build_bug.h:50:19: note: expanded from macro 'BUILD_BUG_ON' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:320:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:308:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:300:9: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ include/linux/entry-common.h:457:6: note: 'kentry_exit_cond_resched' declared here void kentry_exit_cond_resched(void); ^ static_call_update(irqentry_exit_cond_resched, irqentry_exit_cond_resched); ^ include/linux/static_call.h:116:37: note: expanded from macro 'static_call_update' BUILD_BUG_ON(!__same_type(*(func), STATIC_CALL_TRAMP(name))); \ ^ include/linux/static_call_types.h:18:34: note: expanded from macro 'STATIC_CALL_TRAMP' #define STATIC_CALL_TRAMP(name) __PASTE(STATIC_CALL_TRAMP_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:153:1: note: expanded from here __SCT__irqentry_exit_cond_resched ^ include/linux/entry-common.h:459:1: note: '__SCT__kentry_exit_cond_resched' declared here DECLARE_STATIC_CALL(kentry_exit_cond_resched, kentry_exit_cond_resched); ^ include/linux/static_call_types.h:39:22: note: expanded from macro 'DECLARE_STATIC_CALL' extern typeof(func) STATIC_CALL_TRAMP(name); ^ include/linux/static_call_types.h:18:34: note: expanded from macro 'STATIC_CALL_TRAMP' #define STATIC_CALL_TRAMP(name) __PASTE(STATIC_CALL_TRAMP_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:124:1: note: expanded from here __SCT__kentry_exit_cond_resched ^ static_call_update(irqentry_exit_cond_resched, irqentry_exit_cond_resched); ^ include/linux/static_call.h:117:24: note: expanded from macro 'static_call_update' __static_call_update(&STATIC_CALL_KEY(name), \ ^ include/linux/static_call_types.h:12:32: note: expanded from macro 'STATIC_CALL_KEY' #define STATIC_CALL_KEY(name) __PASTE(STATIC_CALL_KEY_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:158:1: note: expanded from here __SCK__irqentry_exit_cond_resched ^ include/linux/entry-common.h:459:1: note: '__SCK__kentry_exit_cond_resched' declared here DECLARE_STATIC_CALL(kentry_exit_cond_resched, kentry_exit_cond_resched); ^ include/linux/static_call_types.h:38:32: note: expanded from macro 'DECLARE_STATIC_CALL' extern struct static_call_key STATIC_CALL_KEY(name); \ ^ include/linux/static_call_types.h:12:32: note: expanded from macro 'STATIC_CALL_KEY' #define STATIC_CALL_KEY(name) __PASTE(STATIC_CALL_KEY_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:123:1: note: expanded from here __SCK__kentry_exit_cond_resched ^ static_call_update(irqentry_exit_cond_resched, irqentry_exit_cond_resched); ^ include/linux/static_call.h:118:9: note: expanded from macro 'static_call_update' STATIC_CALL_TRAMP_ADDR(name), func); \ ^ include/linux/static_call.h:108:39: note: expanded from macro 'STATIC_CALL_TRAMP_ADDR' #define STATIC_CALL_TRAMP_ADDR(name) &STATIC_CALL_TRAMP(name) ^ include/linux/static_call_types.h:18:34: note: expanded from macro 'STATIC_CALL_TRAMP' #define STATIC_CALL_TRAMP(name) __PASTE(STATIC_CALL_TRAMP_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:159:1: note: expanded from here __SCT__irqentry_exit_cond_resched ^ include/linux/entry-common.h:459:1: note: '__SCT__kentry_exit_cond_resched' declared here DECLARE_STATIC_CALL(kentry_exit_cond_resched, kentry_exit_cond_resched); ^ include/linux/static_call_types.h:39:22: note: expanded from macro 'DECLARE_STATIC_CALL' extern typeof(func) STATIC_CALL_TRAMP(name); ^ include/linux/static_call_types.h:18:34: note: expanded from macro 'STATIC_CALL_TRAMP' #define STATIC_CALL_TRAMP(name) __PASTE(STATIC_CALL_TRAMP_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:124:1: note: expanded from here __SCT__kentry_exit_cond_resched ^ static_call_update(irqentry_exit_cond_resched, irqentry_exit_cond_resched); ^~~~~~~~~~~~~~~~~~~~~~~~~~ kentry_exit_cond_resched include/linux/static_call.h:118:39: note: expanded from macro 'static_call_update' STATIC_CALL_TRAMP_ADDR(name), func); \ ^ include/linux/entry-common.h:457:6: note: 'kentry_exit_cond_resched' declared here void kentry_exit_cond_resched(void); ^ kernel/sched/core.c:5402:59: error: use of undeclared identifier 'irqentry_exit_cond_resched'; did you mean 'kentry_exit_cond_resched'? static_call_update(irqentry_exit_cond_resched, (typeof(&irqentry_exit_cond_resched)) NULL); ^~~~~~~~~~~~~~~~~~~~~~~~~~ kentry_exit_cond_resched include/linux/static_call.h:116:30: note: expanded from macro 'static_call_update' BUILD_BUG_ON(!__same_type(*(func), STATIC_CALL_TRAMP(name))); \ ^ include/linux/compiler_types.h:256:63: note: expanded from macro '__same_type' #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b)) ^ include/linux/build_bug.h:50:19: note: expanded from macro 'BUILD_BUG_ON' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:320:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:308:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:300:9: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ include/linux/entry-common.h:457:6: note: 'kentry_exit_cond_resched' declared here void kentry_exit_cond_resched(void); ^ kernel/sched/core.c:5402:3: error: use of undeclared identifier '__SCT__irqentry_exit_cond_resched'; did you mean '__SCT__kentry_exit_cond_resched'? static_call_update(irqentry_exit_cond_resched, (typeof(&irqentry_exit_cond_resched)) NULL); ^ include/linux/static_call.h:116:37: note: expanded from macro 'static_call_update' BUILD_BUG_ON(!__same_type(*(func), STATIC_CALL_TRAMP(name))); \ ^ include/linux/static_call_types.h:18:34: note: expanded from macro 'STATIC_CALL_TRAMP' #define STATIC_CALL_TRAMP(name) __PASTE(STATIC_CALL_TRAMP_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:30:1: note: expanded from here __SCT__irqentry_exit_cond_resched ^ include/linux/entry-common.h:459:1: note: '__SCT__kentry_exit_cond_resched' declared here DECLARE_STATIC_CALL(kentry_exit_cond_resched, kentry_exit_cond_resched); ^ include/linux/static_call_types.h:39:22: note: expanded from macro 'DECLARE_STATIC_CALL' extern typeof(func) STATIC_CALL_TRAMP(name); ^ include/linux/static_call_types.h:18:34: note: expanded from macro 'STATIC_CALL_TRAMP' #define STATIC_CALL_TRAMP(name) __PASTE(STATIC_CALL_TRAMP_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:124:1: note: expanded from here __SCT__kentry_exit_cond_resched ^ kernel/sched/core.c:5402:59: error: use of undeclared identifier 'irqentry_exit_cond_resched'; did you mean 'kentry_exit_cond_resched'? static_call_update(irqentry_exit_cond_resched, (typeof(&irqentry_exit_cond_resched)) NULL); ^~~~~~~~~~~~~~~~~~~~~~~~~~ kentry_exit_cond_resched include/linux/static_call.h:118:39: note: expanded from macro 'static_call_update' STATIC_CALL_TRAMP_ADDR(name), func); \ ^ include/linux/entry-common.h:457:6: note: 'kentry_exit_cond_resched' declared here void kentry_exit_cond_resched(void); ^ kernel/sched/core.c:5402:3: error: use of undeclared identifier '__SCK__irqentry_exit_cond_resched'; did you mean '__SCK__kentry_exit_cond_resched'? static_call_update(irqentry_exit_cond_resched, (typeof(&irqentry_exit_cond_resched)) NULL); ^ include/linux/static_call.h:117:24: note: expanded from macro 'static_call_update' __static_call_update(&STATIC_CALL_KEY(name), \ ^ include/linux/static_call_types.h:12:32: note: expanded from macro 'STATIC_CALL_KEY' #define STATIC_CALL_KEY(name) __PASTE(STATIC_CALL_KEY_PREFIX, name) ^ include/linux/compiler_types.h:60:22: note: expanded from macro '__PASTE' #define __PASTE(a,b) ___PASTE(a,b) ^ include/linux/compiler_types.h:59:23: note: expanded from macro '___PASTE' #define ___PASTE(a,b) a##b ^ <scratch space>:35:1: note: expanded from here __SCK__irqentry_exit_cond_resched ^ include/linux/entry-common.h:459:1: note: '__SCK__kentry_exit_cond_resched' declared here vim +5394 kernel/sched/core.c e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5383 e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5384 static void sched_dynamic_update(int mode) 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5385) { e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5386 /* e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5387 * Avoid {NONE,VOLUNTARY} -> FULL transitions from ever ending up in e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5388 * the ZERO state, which is invalid. e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5389 */ e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5390 static_call_update(cond_resched, __cond_resched); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5391 static_call_update(might_resched, __cond_resched); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5392 static_call_update(preempt_schedule, __preempt_schedule_func); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5393 static_call_update(preempt_schedule_notrace, __preempt_schedule_notrace_func); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 @5394 static_call_update(irqentry_exit_cond_resched, irqentry_exit_cond_resched); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5395 e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5396 switch (mode) { e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5397 case preempt_dynamic_none: 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5398) static_call_update(cond_resched, __cond_resched); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5399) static_call_update(might_resched, (typeof(&__cond_resched)) __static_call_return0); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5400) static_call_update(preempt_schedule, (typeof(&preempt_schedule)) NULL); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5401) static_call_update(preempt_schedule_notrace, (typeof(&preempt_schedule_notrace)) NULL); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5402) static_call_update(irqentry_exit_cond_resched, (typeof(&irqentry_exit_cond_resched)) NULL); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5403 pr_info("Dynamic Preempt: none\n"); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5404 break; e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5405 e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5406 case preempt_dynamic_voluntary: 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5407) static_call_update(cond_resched, __cond_resched); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5408) static_call_update(might_resched, __cond_resched); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5409) static_call_update(preempt_schedule, (typeof(&preempt_schedule)) NULL); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5410) static_call_update(preempt_schedule_notrace, (typeof(&preempt_schedule_notrace)) NULL); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5411) static_call_update(irqentry_exit_cond_resched, (typeof(&irqentry_exit_cond_resched)) NULL); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5412 pr_info("Dynamic Preempt: voluntary\n"); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5413 break; e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5414 e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5415 case preempt_dynamic_full: 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5416) static_call_update(cond_resched, (typeof(&__cond_resched)) __static_call_return0); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5417) static_call_update(might_resched, (typeof(&__cond_resched)) __static_call_return0); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5418) static_call_update(preempt_schedule, __preempt_schedule_func); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5419) static_call_update(preempt_schedule_notrace, __preempt_schedule_notrace_func); 826bfeb37bb430 Peter Zijlstra (Intel 2021-01-18 5420) static_call_update(irqentry_exit_cond_resched, irqentry_exit_cond_resched); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5421 pr_info("Dynamic Preempt: full\n"); e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5422 break; e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5423 } e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5424 e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5425 preempt_dynamic_mode = mode; e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5426 } e59e10f8ef63d4 Peter Zijlstra 2021-01-22 5427 :::::: The code at line 5394 was first introduced by commit :::::: e59e10f8ef63d42fbb99776a5a112841e798b3b5 sched: Add /debug/sched_preempt :::::: TO: Peter Zijlstra <peterz(a)infradead.org&gt; :::::: CC: Ingo Molnar <mingo(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org