Hi chengkaitao, Thank you for the patch! Yet something to improve: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/chengkaitao/mm-memcontrol-protect-the-memory-in-cgroup-from-being-oom-killed/20221130-150440 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20221130070158.44221-1-chengkaitao%40didiglobal.com patch subject: [PATCH] mm: memcontrol: protect the memory in cgroup from being oom killed config: i386-tinyconfig compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/d2e2f936cb254b6976abddb53b9f46dfc9c9a134 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review chengkaitao/mm-memcontrol-protect-the-memory-in-cgroup-from-being-oom-killed/20221130-150440 git checkout d2e2f936cb254b6976abddb53b9f46dfc9c9a134 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All error/warnings (new ones prefixed by >>): ld: init/do_mounts.o: in function `update_parent_oom_protection': >> do_mounts.c:(.text+0x5): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: init/do_mounts.o: in function `get_task_eoom_protect': >> do_mounts.c:(.text+0x6): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: init/do_mounts.o: in function `is_root_oom_protect': >> do_mounts.c:(.text+0x9): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: init/do_mounts.o: in function `mem_cgroup_scan_tasks_update_eoom': >> do_mounts.c:(.text+0xc): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/entry/vdso/vma.o: in function `update_parent_oom_protection': vma.c:(.text+0x1db): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/entry/vdso/vma.o: in function `get_task_eoom_protect': vma.c:(.text+0x1dc): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/entry/vdso/vma.o: in function `is_root_oom_protect': vma.c:(.text+0x1df): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/entry/vdso/vma.o: in function `mem_cgroup_scan_tasks_update_eoom': vma.c:(.text+0x1e2): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/kernel/setup.o: in function `update_parent_oom_protection': setup.c:(.text+0x3): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/kernel/setup.o: in function `get_task_eoom_protect': setup.c:(.text+0x4): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/kernel/setup.o: in function `is_root_oom_protect': setup.c:(.text+0x7): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/kernel/setup.o: in function `mem_cgroup_scan_tasks_update_eoom': setup.c:(.text+0xa): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/kernel/e820.o: in function `update_parent_oom_protection': e820.c:(.text+0x134): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/kernel/e820.o: in function `get_task_eoom_protect': e820.c:(.text+0x135): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/kernel/e820.o: in function `is_root_oom_protect': e820.c:(.text+0x138): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/kernel/e820.o: in function `mem_cgroup_scan_tasks_update_eoom': e820.c:(.text+0x13b): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/kernel/cpu/umwait.o: in function `update_parent_oom_protection': umwait.c:(.text+0x2d): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/kernel/cpu/umwait.o: in function `get_task_eoom_protect': umwait.c:(.text+0x2e): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/kernel/cpu/umwait.o: in function `is_root_oom_protect': umwait.c:(.text+0x31): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/kernel/cpu/umwait.o: in function `mem_cgroup_scan_tasks_update_eoom': umwait.c:(.text+0x34): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/kernel/reboot.o: in function `update_parent_oom_protection': reboot.c:(.text+0x1a): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/kernel/reboot.o: in function `get_task_eoom_protect': reboot.c:(.text+0x1b): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/kernel/reboot.o: in function `is_root_oom_protect': reboot.c:(.text+0x1e): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/kernel/reboot.o: in function `mem_cgroup_scan_tasks_update_eoom': reboot.c:(.text+0x21): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/mm/init.o: in function `update_parent_oom_protection': init.c:(.text+0x0): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/mm/init.o: in function `get_task_eoom_protect': init.c:(.text+0x1): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/mm/init.o: in function `is_root_oom_protect': init.c:(.text+0x4): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/mm/init.o: in function `mem_cgroup_scan_tasks_update_eoom': init.c:(.text+0x7): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/mm/init_32.o: in function `update_parent_oom_protection': init_32.c:(.text+0x0): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/mm/init_32.o: in function `get_task_eoom_protect': init_32.c:(.text+0x1): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/mm/init_32.o: in function `is_root_oom_protect': init_32.c:(.text+0x4): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/mm/init_32.o: in function `mem_cgroup_scan_tasks_update_eoom': init_32.c:(.text+0x7): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/mm/fault.o: in function `update_parent_oom_protection': fault.c:(.text+0x8cd): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/mm/fault.o: in function `get_task_eoom_protect': fault.c:(.text+0x8ce): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/mm/fault.o: in function `is_root_oom_protect': fault.c:(.text+0x8d1): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/mm/fault.o: in function `mem_cgroup_scan_tasks_update_eoom': fault.c:(.text+0x8d4): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/mm/ioremap.o: in function `update_parent_oom_protection': ioremap.c:(.text+0x25c): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/mm/ioremap.o: in function `get_task_eoom_protect': ioremap.c:(.text+0x25d): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/mm/ioremap.o: in function `is_root_oom_protect': ioremap.c:(.text+0x260): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/mm/ioremap.o: in function `mem_cgroup_scan_tasks_update_eoom': ioremap.c:(.text+0x263): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/mm/pgtable.o: in function `update_parent_oom_protection': pgtable.c:(.text+0x4): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/mm/pgtable.o: in function `get_task_eoom_protect': pgtable.c:(.text+0x5): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/mm/pgtable.o: in function `is_root_oom_protect': pgtable.c:(.text+0x8): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/mm/pgtable.o: in function `mem_cgroup_scan_tasks_update_eoom': pgtable.c:(.text+0xb): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: arch/x86/mm/pgtable_32.o: in function `update_parent_oom_protection': pgtable_32.c:(.text+0x0): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: arch/x86/mm/pgtable_32.o: in function `get_task_eoom_protect': pgtable_32.c:(.text+0x1): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: arch/x86/mm/pgtable_32.o: in function `is_root_oom_protect': pgtable_32.c:(.text+0x4): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: arch/x86/mm/pgtable_32.o: in function `mem_cgroup_scan_tasks_update_eoom': pgtable_32.c:(.text+0x7): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: kernel/fork.o: in function `update_parent_oom_protection': fork.c:(.text+0x5bb): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: kernel/fork.o: in function `get_task_eoom_protect': fork.c:(.text+0x5bc): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here ld: kernel/fork.o: in function `is_root_oom_protect': fork.c:(.text+0x5bf): multiple definition of `is_root_oom_protect'; init/main.o:main.c:(.text+0x36): first defined here ld: kernel/fork.o: in function `mem_cgroup_scan_tasks_update_eoom': fork.c:(.text+0x5c2): multiple definition of `mem_cgroup_scan_tasks_update_eoom'; init/main.o:main.c:(.text+0x39): first defined here ld: kernel/cpu.o: in function `update_parent_oom_protection': cpu.c:(.text+0x161): multiple definition of `update_parent_oom_protection'; init/main.o:main.c:(.text+0x32): first defined here ld: kernel/cpu.o: in function `get_task_eoom_protect': cpu.c:(.text+0x162): multiple definition of `get_task_eoom_protect'; init/main.o:main.c:(.text+0x33): first defined here -- In file included from include/linux/swap.h:9, from include/linux/suspend.h:5, from arch/x86/kernel/asm-offsets.c:13: >> include/linux/memcontrol.h:1228:6: warning: no previous prototype for 'update_parent_oom_protection' [-Wmissing-prototypes] 1228 | void update_parent_oom_protection(struct mem_cgroup *root, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1243:15: warning: no previous prototype for 'get_task_eoom_protect' [-Wmissing-prototypes] 1243 | unsigned long get_task_eoom_protect(struct task_struct *p, long points) | ^~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1248:6: warning: no previous prototype for 'is_root_oom_protect' [-Wmissing-prototypes] 1248 | bool is_root_oom_protect(void) | ^~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1372:5: warning: no previous prototype for 'mem_cgroup_scan_tasks_update_eoom' [-Wmissing-prototypes] 1372 | int mem_cgroup_scan_tasks_update_eoom(struct mem_cgroup *memcg, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from include/linux/rmap.h:12, from init/main.c:62: >> include/linux/memcontrol.h:1228:6: warning: no previous prototype for 'update_parent_oom_protection' [-Wmissing-prototypes] 1228 | void update_parent_oom_protection(struct mem_cgroup *root, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1243:15: warning: no previous prototype for 'get_task_eoom_protect' [-Wmissing-prototypes] 1243 | unsigned long get_task_eoom_protect(struct task_struct *p, long points) | ^~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1248:6: warning: no previous prototype for 'is_root_oom_protect' [-Wmissing-prototypes] 1248 | bool is_root_oom_protect(void) | ^~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1372:5: warning: no previous prototype for 'mem_cgroup_scan_tasks_update_eoom' [-Wmissing-prototypes] 1372 | int mem_cgroup_scan_tasks_update_eoom(struct mem_cgroup *memcg, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ init/main.c:775:20: warning: no previous prototype for 'arch_post_acpi_subsys_init' [-Wmissing-prototypes] 775 | void __init __weak arch_post_acpi_subsys_init(void) { } | ^~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from include/linux/swap.h:9, from mm/shmem.c:36: >> include/linux/memcontrol.h:1228:6: warning: no previous prototype for 'update_parent_oom_protection' [-Wmissing-prototypes] 1228 | void update_parent_oom_protection(struct mem_cgroup *root, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1243:15: warning: no previous prototype for 'get_task_eoom_protect' [-Wmissing-prototypes] 1243 | unsigned long get_task_eoom_protect(struct task_struct *p, long points) | ^~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1248:6: warning: no previous prototype for 'is_root_oom_protect' [-Wmissing-prototypes] 1248 | bool is_root_oom_protect(void) | ^~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1372:5: warning: no previous prototype for 'mem_cgroup_scan_tasks_update_eoom' [-Wmissing-prototypes] 1372 | int mem_cgroup_scan_tasks_update_eoom(struct mem_cgroup *memcg, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/shmem.c:4148:13: warning: no previous prototype for 'shmem_init' [-Wmissing-prototypes] 4148 | void __init shmem_init(void) | ^~~~~~~~~~ mm/shmem.c:4156:5: warning: no previous prototype for 'shmem_unuse' [-Wmissing-prototypes] 4156 | int shmem_unuse(unsigned int type) | ^~~~~~~~~~~ mm/shmem.c:4161:5: warning: no previous prototype for 'shmem_lock' [-Wmissing-prototypes] 4161 | int shmem_lock(struct file *file, int lock, struct ucounts *ucounts) | ^~~~~~~~~~ mm/shmem.c:4166:6: warning: no previous prototype for 'shmem_unlock_mapping' [-Wmissing-prototypes] 4166 | void shmem_unlock_mapping(struct address_space *mapping) | ^~~~~~~~~~~~~~~~~~~~ mm/shmem.c:4171:15: warning: no previous prototype for 'shmem_get_unmapped_area' [-Wmissing-prototypes] 4171 | unsigned long shmem_get_unmapped_area(struct file *file, | ^~~~~~~~~~~~~~~~~~~~~~~ mm/shmem.c:4179:6: warning: no previous prototype for 'shmem_truncate_range' [-Wmissing-prototypes] 4179 | void shmem_truncate_range(struct inode *inode, loff_t lstart, loff_t lend) | ^~~~~~~~~~~~~~~~~~~~ mm/shmem.c:4239:14: warning: no previous prototype for 'shmem_kernel_file_setup' [-Wmissing-prototypes] 4239 | struct file *shmem_kernel_file_setup(const char *name, loff_t size, unsigned long flags) | ^~~~~~~~~~~~~~~~~~~~~~~ mm/shmem.c:4250:14: warning: no previous prototype for 'shmem_file_setup' [-Wmissing-prototypes] 4250 | struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags) | ^~~~~~~~~~~~~~~~ mm/shmem.c:4263:14: warning: no previous prototype for 'shmem_file_setup_with_mnt' [-Wmissing-prototypes] 4263 | struct file *shmem_file_setup_with_mnt(struct vfsmount *mnt, const char *name, | ^~~~~~~~~~~~~~~~~~~~~~~~~ mm/shmem.c:4274:5: warning: no previous prototype for 'shmem_zero_setup' [-Wmissing-prototypes] 4274 | int shmem_zero_setup(struct vm_area_struct *vma) | ^~~~~~~~~~~~~~~~ mm/shmem.c:4312:14: warning: no previous prototype for 'shmem_read_mapping_page_gfp' [-Wmissing-prototypes] 4312 | struct page *shmem_read_mapping_page_gfp(struct address_space *mapping, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from fs/pipe.c:26: >> include/linux/memcontrol.h:1228:6: warning: no previous prototype for 'update_parent_oom_protection' [-Wmissing-prototypes] 1228 | void update_parent_oom_protection(struct mem_cgroup *root, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1243:15: warning: no previous prototype for 'get_task_eoom_protect' [-Wmissing-prototypes] 1243 | unsigned long get_task_eoom_protect(struct task_struct *p, long points) | ^~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1248:6: warning: no previous prototype for 'is_root_oom_protect' [-Wmissing-prototypes] 1248 | bool is_root_oom_protect(void) | ^~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1372:5: warning: no previous prototype for 'mem_cgroup_scan_tasks_update_eoom' [-Wmissing-prototypes] 1372 | int mem_cgroup_scan_tasks_update_eoom(struct mem_cgroup *memcg, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/pipe.c:757:15: warning: no previous prototype for 'account_pipe_buffers' [-Wmissing-prototypes] 757 | unsigned long account_pipe_buffers(struct user_struct *user, | ^~~~~~~~~~~~~~~~~~~~ fs/pipe.c:763:6: warning: no previous prototype for 'too_many_pipe_buffers_soft' [-Wmissing-prototypes] 763 | bool too_many_pipe_buffers_soft(unsigned long user_bufs) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ fs/pipe.c:770:6: warning: no previous prototype for 'too_many_pipe_buffers_hard' [-Wmissing-prototypes] 770 | bool too_many_pipe_buffers_hard(unsigned long user_bufs) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ fs/pipe.c:777:6: warning: no previous prototype for 'pipe_is_unprivileged_user' [-Wmissing-prototypes] 777 | bool pipe_is_unprivileged_user(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ fs/pipe.c:1253:5: warning: no previous prototype for 'pipe_resize_ring' [-Wmissing-prototypes] 1253 | int pipe_resize_ring(struct pipe_inode_info *pipe, unsigned int nr_slots) | ^~~~~~~~~~~~~~~~ -- In file included from include/net/sock.h:53, from include/linux/tcp.h:19, from include/linux/ipv6.h:93, from include/net/addrconf.h:52, from lib/vsprintf.c:40: >> include/linux/memcontrol.h:1228:6: warning: no previous prototype for 'update_parent_oom_protection' [-Wmissing-prototypes] 1228 | void update_parent_oom_protection(struct mem_cgroup *root, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1243:15: warning: no previous prototype for 'get_task_eoom_protect' [-Wmissing-prototypes] 1243 | unsigned long get_task_eoom_protect(struct task_struct *p, long points) | ^~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1248:6: warning: no previous prototype for 'is_root_oom_protect' [-Wmissing-prototypes] 1248 | bool is_root_oom_protect(void) | ^~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1372:5: warning: no previous prototype for 'mem_cgroup_scan_tasks_update_eoom' [-Wmissing-prototypes] 1372 | int mem_cgroup_scan_tasks_update_eoom(struct mem_cgroup *memcg, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ lib/vsprintf.c: In function 'va_format': lib/vsprintf.c:1685:9: warning: function 'va_format' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 1685 | buf += vsnprintf(buf, end > buf ? end - buf : 0, va_fmt->fmt, va); | ^~~ -- In file included from include/linux/swap.h:9, from include/asm-generic/tlb.h:15, from arch/x86/include/asm/tlb.h:8, from arch/x86/entry/vdso/vma.c:24: >> include/linux/memcontrol.h:1228:6: warning: no previous prototype for 'update_parent_oom_protection' [-Wmissing-prototypes] 1228 | void update_parent_oom_protection(struct mem_cgroup *root, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1243:15: warning: no previous prototype for 'get_task_eoom_protect' [-Wmissing-prototypes] 1243 | unsigned long get_task_eoom_protect(struct task_struct *p, long points) | ^~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1248:6: warning: no previous prototype for 'is_root_oom_protect' [-Wmissing-prototypes] 1248 | bool is_root_oom_protect(void) | ^~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1372:5: warning: no previous prototype for 'mem_cgroup_scan_tasks_update_eoom' [-Wmissing-prototypes] 1372 | int mem_cgroup_scan_tasks_update_eoom(struct mem_cgroup *memcg, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/entry/vdso/vma.c:35:19: warning: no previous prototype for 'arch_get_vdso_data' [-Wmissing-prototypes] 35 | struct vdso_data *arch_get_vdso_data(void *vvar_page) | ^~~~~~~~~~~~~~~~~~ -- In file included from include/linux/swap.h:9, from include/linux/suspend.h:5, from kernel/sched/build_policy.c:28: >> include/linux/memcontrol.h:1228:6: warning: no previous prototype for 'update_parent_oom_protection' [-Wmissing-prototypes] 1228 | void update_parent_oom_protection(struct mem_cgroup *root, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1243:15: warning: no previous prototype for 'get_task_eoom_protect' [-Wmissing-prototypes] 1243 | unsigned long get_task_eoom_protect(struct task_struct *p, long points) | ^~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1248:6: warning: no previous prototype for 'is_root_oom_protect' [-Wmissing-prototypes] 1248 | bool is_root_oom_protect(void) | ^~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1372:5: warning: no previous prototype for 'mem_cgroup_scan_tasks_update_eoom' [-Wmissing-prototypes] 1372 | int mem_cgroup_scan_tasks_update_eoom(struct mem_cgroup *memcg, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from kernel/sched/build_policy.c:45: kernel/sched/rt.c:9:18: warning: 'max_rt_runtime' defined but not used [-Wunused-const-variable=] 9 | static const u64 max_rt_runtime = MAX_BW; | ^~~~~~~~~~~~~~ -- In file included from include/linux/swap.h:9, from include/linux/suspend.h:5, from arch/x86/kernel/asm-offsets.c:13: >> include/linux/memcontrol.h:1228:6: warning: no previous prototype for 'update_parent_oom_protection' [-Wmissing-prototypes] 1228 | void update_parent_oom_protection(struct mem_cgroup *root, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1243:15: warning: no previous prototype for 'get_task_eoom_protect' [-Wmissing-prototypes] 1243 | unsigned long get_task_eoom_protect(struct task_struct *p, long points) | ^~~~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1248:6: warning: no previous prototype for 'is_root_oom_protect' [-Wmissing-prototypes] 1248 | bool is_root_oom_protect(void) | ^~~~~~~~~~~~~~~~~~~ >> include/linux/memcontrol.h:1372:5: warning: no previous prototype for 'mem_cgroup_scan_tasks_update_eoom' [-Wmissing-prototypes] 1372 | int mem_cgroup_scan_tasks_update_eoom(struct mem_cgroup *memcg, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- 0-DAY CI Kernel Test Service https://01.org/lkp