tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/task_work head: b9a78907dfb92b903d4d52402fc69a051cafa716 commit: a6377699039712759e256b989ffee5da7a50f791 [18/38] rcu,tracing: Create trace_rcu_{enter,exit}() config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (git://gitmirror/llvm_project 949134e2fefd34a38ed71de90dffe2300e2e1139) reproduce: # FIXME the reproduce steps for clang is not ready yet If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from arch/x86/kernel/asm-offsets.c:9: In file included from include/linux/crypto.h:19: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:21: In file included from include/linux/mm_types.h:10: In file included from include/linux/rbtree.h:22: rcu_irq_enter_irqsave(); ^ include/linux/rcupdate.h:197:3: note: did you mean 'rcu_irq_enter_irqsafe'? include/linux/rcutree.h:49:6: note: 'rcu_irq_enter_irqsafe' declared here void rcu_irq_enter_irqsafe(void); ^ In file included from arch/x86/kernel/asm-offsets.c:9: In file included from include/linux/crypto.h:19: In file included from include/linux/slab.h:15: In file included from include/linux/gfp.h:6: In file included from include/linux/mmzone.h:21: In file included from include/linux/mm_types.h:10: In file included from include/linux/rbtree.h:22: rcu_irq_exit_irqsave(); ^ include/linux/rcupdate.h:204:3: note: did you mean 'rcu_irq_exit_irqsafe'? include/linux/rcutree.h:50:6: note: 'rcu_irq_exit_irqsafe' declared here void rcu_irq_exit_irqsafe(void); ^ 2 errors generated. make[2]: *** [scripts/Makefile.build:101: arch/x86/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1112: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:179: sub-make] Error 2 149 real 14 user 19 sys 22.93% cpu make prepare vim +/rcu_irq_enter_irqsave +197 include/linux/rcupdate.h 177 178 /** 179 * trace_rcu_enter - Force RCU to be active, for code that needs RCU readers 180 * 181 * Very similar to RCU_NONIDLE() above. 182 * 183 * Tracing can happen while RCU isn't active yet, for instance in the idle loop 184 * between rcu_idle_enter() and rcu_idle_exit(), or early in exception entry. 185 * RCU will happily ignore any read-side critical sections in this case. 186 * 187 * This function ensures that RCU is aware hereafter and the code can readily 188 * rely on RCU read-side critical sections working as expected. 189 * 190 * This function is NMI safe -- provided in_nmi() is correct and will nest up-to 191 * INT_MAX/2 times. 192 */ 193 static inline int trace_rcu_enter(void) 194 { 195 int state = !rcu_is_watching(); 196 if (state) 198 return state; 199 } 200 201 static inline void trace_rcu_exit(int state) 202 { 203 if (state) 205 } 206 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org