Hi Byungchul, kernel test robot noticed the following build warnings: [auto build test WARNING on 0dd3ee31125508cd67f7e7172247f05b7fd1753a] url: https://github.com/intel-lab-lkp/linux/commits/Byungchul-Park/x86-tlb-Add-APIs-manipulating-tlb-batch-s-arch-data/20240115-162220 base: 0dd3ee31125508cd67f7e7172247f05b7fd1753a patch link: https://lore.kernel.org/r/20240115081953.2521-7-byungchul%40sk.com patch subject: [PATCH v6 6/7] mm: Defer TLB flush by keeping both src and dst folios at migration config: alpha-allnoconfig (https://download.01.org/0day-ci/archive/20240116/202401160753.u2pxHstH-lkp@xxxxxxxxx/config) compiler: alpha-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240116/202401160753.u2pxHstH-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202401160753.u2pxHstH-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from include/linux/pid_namespace.h:7, from include/linux/ptrace.h:10, from arch/alpha/kernel/asm-offsets.c:11: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/asm-offsets.c:15:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 15 | void foo(void) | ^~~ -- In file included from arch/alpha/kernel/traps.c:13: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/traps.c:210:1: warning: no previous prototype for 'do_entArith' [-Wmissing-prototypes] 210 | do_entArith(unsigned long summary, unsigned long write_mask, | ^~~~~~~~~~~ arch/alpha/kernel/traps.c:232:1: warning: no previous prototype for 'do_entIF' [-Wmissing-prototypes] 232 | do_entIF(unsigned long type, struct pt_regs *regs) | ^~~~~~~~ arch/alpha/kernel/traps.c:399:1: warning: no previous prototype for 'do_entDbg' [-Wmissing-prototypes] 399 | do_entDbg(struct pt_regs *regs) | ^~~~~~~~~ arch/alpha/kernel/traps.c:435:1: warning: no previous prototype for 'do_entUna' [-Wmissing-prototypes] 435 | do_entUna(void * va, unsigned long opcode, unsigned long reg, | ^~~~~~~~~ arch/alpha/kernel/traps.c:720:1: warning: no previous prototype for 'do_entUnaUser' [-Wmissing-prototypes] 720 | do_entUnaUser(void __user * va, unsigned long opcode, | ^~~~~~~~~~~~~ arch/alpha/kernel/traps.c:975:1: warning: no previous prototype for 'trap_init' [-Wmissing-prototypes] 975 | trap_init(void) | ^~~~~~~~~ -- In file included from arch/alpha/kernel/process.c:20: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from arch/alpha/include/asm/io.h:8, from include/linux/io.h:13, from include/linux/irq.h:20, 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 include/linux/kernel_stat.h:9, from arch/alpha/kernel/irq.c:17: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/irq.c:96:1: warning: no previous prototype for 'handle_irq' [-Wmissing-prototypes] 96 | handle_irq(int irq) | ^~~~~~~~~~ -- In file included from arch/alpha/include/asm/io.h:8, from include/linux/io.h:13, from include/linux/irq.h:20, from arch/alpha/kernel/irq_alpha.c:8: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/irq_alpha.c:45:1: warning: no previous prototype for 'do_entInt' [-Wmissing-prototypes] 45 | do_entInt(unsigned long type, unsigned long vector, | ^~~~~~~~~ -- In file included from include/linux/pid_namespace.h:7, from include/linux/ptrace.h:10, from arch/alpha/kernel/signal.c:16: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/signal.c:205:1: warning: no previous prototype for 'do_sigreturn' [-Wmissing-prototypes] 205 | do_sigreturn(struct sigcontext __user *sc) | ^~~~~~~~~~~~ arch/alpha/kernel/signal.c:233:1: warning: no previous prototype for 'do_rt_sigreturn' [-Wmissing-prototypes] 233 | do_rt_sigreturn(struct rt_sigframe __user *frame) | ^~~~~~~~~~~~~~~ arch/alpha/kernel/signal.c:523:1: warning: no previous prototype for 'do_work_pending' [-Wmissing-prototypes] 523 | do_work_pending(struct pt_regs *regs, unsigned long thread_flags, | ^~~~~~~~~~~~~~~ -- In file included from arch/alpha/kernel/ptrace.c:11: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/ptrace.c:322:26: warning: no previous prototype for 'syscall_trace_enter' [-Wmissing-prototypes] 322 | asmlinkage unsigned long syscall_trace_enter(void) | ^~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/ptrace.c:334:1: warning: no previous prototype for 'syscall_trace_leave' [-Wmissing-prototypes] 334 | syscall_trace_leave(void) | ^~~~~~~~~~~~~~~~~~~ -- In file included from arch/alpha/kernel/time.c:28: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/time.c:64:6: warning: no previous prototype for 'arch_irq_work_raise' [-Wmissing-prototypes] 64 | void arch_irq_work_raise(void) | ^~~~~~~~~~~~~~~~~~~ -- In file included from arch/alpha/include/asm/io.h:8, from arch/alpha/kernel/io.c:10: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/io.c:654:1: warning: no previous prototype for 'scr_memcpyw' [-Wmissing-prototypes] 654 | scr_memcpyw(u16 *d, const u16 *s, unsigned int count) | ^~~~~~~~~~~ -- In file included from arch/alpha/include/asm/io.h:8, from include/linux/io.h:13, from include/linux/irq.h:20, 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 include/linux/pci.h:38, from arch/alpha/kernel/pci.c:17: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/pci.c:285:1: warning: no previous prototype for 'pcibios_claim_one_bus' [-Wmissing-prototypes] 285 | pcibios_claim_one_bus(struct pci_bus *b) | ^~~~~~~~~~~~~~~~~~~~~ -- In file included from arch/alpha/include/asm/io.h:8, from arch/alpha/kernel/core_cia.c:16: >> include/linux/mm.h:2046:43: warning: 'struct arch_tlbflush_unmap_batch' declared inside parameter list will not be visible outside of this definition or declaration 2046 | static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/core_cia.c:284:1: warning: no previous prototype for 'cia_pci_tbi_try2' [-Wmissing-prototypes] 284 | cia_pci_tbi_try2(struct pci_controller *hose, | ^~~~~~~~~~~~~~~~ arch/alpha/kernel/core_cia.c:580:1: warning: no previous prototype for 'cia_save_srm_settings' [-Wmissing-prototypes] 580 | cia_save_srm_settings(int is_pyxis) | ^~~~~~~~~~~~~~~~~~~~~ arch/alpha/kernel/core_cia.c:606:1: warning: no previous prototype for 'cia_restore_srm_settings' [-Wmissing-prototypes] 606 | cia_restore_srm_settings(void) | ^~~~~~~~~~~~~~~~~~~~~~~~ .. vim +2046 include/linux/mm.h 2040 2041 #if defined(CONFIG_MIGRATION) && defined(CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH) 2042 extern void migrc_flush_start(void); 2043 extern void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch); 2044 #else 2045 static inline void migrc_flush_start(void) {} > 2046 static inline void migrc_flush_end(struct arch_tlbflush_unmap_batch *arch) {} 2047 #endif 2048 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
