Hi Vishal, kernel test robot noticed the following build errors:
[auto build test ERROR on next-20260213] [also build test ERROR on linus/master] [cannot apply to tip/smp/core rcu/rcu/dev v6.19 v6.19-rc8 v6.19-rc7 v6.19] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Vishal-Chourasia/cpuhp-Optimize-SMT-switch-operation-by-batching-lock-acquisition/20260216-202247 base: next-20260213 patch link: https://lore.kernel.org/r/20260216121927.489062-6-vishalc%40linux.ibm.com patch subject: [PATCH v2 2/2] cpuhp: Expedite RCU grace periods during SMT operations config: alpha-allnoconfig (https://download.01.org/0day-ci/archive/20260217/[email protected]/config) compiler: alpha-linux-gcc (GCC) 15.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260217/[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 errors (new ones prefixed by >>): In file included from kernel/rcu/update.c:50: >> kernel/rcu/rcu.h:515:20: error: static declaration of 'rcu_expedite_gp' >> follows non-static declaration 515 | static inline void rcu_expedite_gp(void) { } | ^~~~~~~~~~~~~~~ In file included from include/linux/rbtree.h:24, from include/linux/mm_types.h:11, from include/linux/mmzone.h:22, from include/linux/topology.h:34, from include/linux/irq.h:19, from include/asm-generic/hardirq.h:17, from arch/alpha/include/asm/hardirq.h:8, from include/linux/hardirq.h:11, from include/linux/interrupt.h:11, from kernel/rcu/update.c:25: include/linux/rcupdate.h:1193:13: note: previous declaration of 'rcu_expedite_gp' with type 'void(void)' 1193 | extern void rcu_expedite_gp(void); | ^~~~~~~~~~~~~~~ >> kernel/rcu/rcu.h:516:20: error: static declaration of 'rcu_unexpedite_gp' >> follows non-static declaration 516 | static inline void rcu_unexpedite_gp(void) { } | ^~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:1194:13: note: previous declaration of 'rcu_unexpedite_gp' with type 'void(void)' 1194 | extern void rcu_unexpedite_gp(void); | ^~~~~~~~~~~~~~~~~ vim +/rcu_expedite_gp +515 kernel/rcu/rcu.h 2b34c43cc1671c Paul E. McKenney 2017-03-14 509 25c36329a30c8c Paul E. McKenney 2017-05-03 510 #ifdef CONFIG_TINY_RCU 25c36329a30c8c Paul E. McKenney 2017-05-03 511 /* Tiny RCU doesn't expedite, as its purpose in life is instead to be tiny. */ 7414fac050d5e0 Paul E. McKenney 2017-06-12 512 static inline bool rcu_gp_is_normal(void) { return true; } 7414fac050d5e0 Paul E. McKenney 2017-06-12 513 static inline bool rcu_gp_is_expedited(void) { return false; } 6efdda8bec2900 Joel Fernandes (Google 2023-01-12 514) static inline bool rcu_async_should_hurry(void) { return false; } 7414fac050d5e0 Paul E. McKenney 2017-06-12 @515 static inline void rcu_expedite_gp(void) { } 7414fac050d5e0 Paul E. McKenney 2017-06-12 @516 static inline void rcu_unexpedite_gp(void) { } 6efdda8bec2900 Joel Fernandes (Google 2023-01-12 517) static inline void rcu_async_hurry(void) { } 6efdda8bec2900 Joel Fernandes (Google 2023-01-12 518) static inline void rcu_async_relax(void) { } 2be4686d866ad5 Frederic Weisbecker 2023-10-27 519 static inline bool rcu_cpu_online(int cpu) { return true; } 25c36329a30c8c Paul E. McKenney 2017-05-03 520 #else /* #ifdef CONFIG_TINY_RCU */ 25c36329a30c8c Paul E. McKenney 2017-05-03 521 bool rcu_gp_is_normal(void); /* Internal RCU use. */ 25c36329a30c8c Paul E. McKenney 2017-05-03 522 bool rcu_gp_is_expedited(void); /* Internal RCU use. */ 6efdda8bec2900 Joel Fernandes (Google 2023-01-12 523) bool rcu_async_should_hurry(void); /* Internal RCU use. */ 25c36329a30c8c Paul E. McKenney 2017-05-03 524 void rcu_expedite_gp(void); 25c36329a30c8c Paul E. McKenney 2017-05-03 525 void rcu_unexpedite_gp(void); 6efdda8bec2900 Joel Fernandes (Google 2023-01-12 526) void rcu_async_hurry(void); 6efdda8bec2900 Joel Fernandes (Google 2023-01-12 527) void rcu_async_relax(void); 25c36329a30c8c Paul E. McKenney 2017-05-03 528 void rcupdate_announce_bootup_oddness(void); 2be4686d866ad5 Frederic Weisbecker 2023-10-27 529 bool rcu_cpu_online(int cpu); 474d0997361c07 Paul E. McKenney 2021-04-20 530 #ifdef CONFIG_TASKS_RCU_GENERIC e21408ceec2de5 Paul E. McKenney 2020-03-16 531 void show_rcu_tasks_gp_kthreads(void); e0a34641eb551e Arnd Bergmann 2023-06-09 532 #else /* #ifdef CONFIG_TASKS_RCU_GENERIC */ e0a34641eb551e Arnd Bergmann 2023-06-09 533 static inline void show_rcu_tasks_gp_kthreads(void) {} e0a34641eb551e Arnd Bergmann 2023-06-09 534 #endif /* #else #ifdef CONFIG_TASKS_RCU_GENERIC */ e0a34641eb551e Arnd Bergmann 2023-06-09 535 #endif /* #else #ifdef CONFIG_TINY_RCU */ e0a34641eb551e Arnd Bergmann 2023-06-09 536 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
