Hi Mike, I love your patch! Yet something to improve: [auto build test ERROR on next-20210119] [also build test ERROR on v5.11-rc4] [cannot apply to linux/master linus/master hnaz-linux-mm/master v5.11-rc4 v5.11-rc3 v5.11-rc2] [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] url: https://github.com/0day-ci/linux/commits/Mike-Kravetz/create-hugetlb-flag... base: b4bb878f3eb3e604ebfe83bbc17eb7af8d99cbf4 config: nds32-defconfig (attached as .config) compiler: nds32le-linux-gcc (GCC) 9.3.0 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 # https://github.com/0day-ci/linux/commit/ebeb3dd25715894428a5107720212b022... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mike-Kravetz/create-hugetlb-flags-to-consolidate-state/20210120-142142 git checkout ebeb3dd25715894428a5107720212b022616c02f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 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 >>): In file included from kernel/fork.c:51: include/linux/hugetlb.h: In function 'HPageRestoreReserve': 512 | return 0 } | ^ include/linux/hugetlb.h:524:2: note: in expansion of macro 'TESTHPAGEFLAG' 524 | TESTHPAGEFLAG(uname, flname) \ | ^~~~~~~~~~~~~ include/linux/hugetlb.h:531:1: note: in expansion of macro 'HPAGEFLAG' 531 | HPAGEFLAG(RestoreReserve, restore_reserve) | ^~~~~~~~~ kernel/fork.c: At top level: kernel/fork.c:161:13: warning: no previous prototype for 'arch_release_task_struct' [-Wmissing-prototypes] 161 | void __weak arch_release_task_struct(struct task_struct *tsk) | ^~~~~~~~~~~~~~~~~~~~~~~~ kernel/fork.c:746:20: warning: no previous prototype for 'arch_task_cache_init' [-Wmissing-prototypes] 746 | void __init __weak arch_task_cache_init(void) { } | ^~~~~~~~~~~~~~~~~~~~ kernel/fork.c:836:12: warning: no previous prototype for 'arch_dup_task_struct' [-Wmissing-prototypes] 836 | int __weak arch_dup_task_struct(struct task_struct *dst, | ^~~~~~~~~~~~~~~~~~~~ -- In file included from kernel/sysctl.c:45: include/linux/hugetlb.h: In function 'HPageRestoreReserve': 512 | return 0 } | ^ include/linux/hugetlb.h:524:2: note: in expansion of macro 'TESTHPAGEFLAG' 524 | TESTHPAGEFLAG(uname, flname) \ | ^~~~~~~~~~~~~ include/linux/hugetlb.h:531:1: note: in expansion of macro 'HPAGEFLAG' 531 | HPAGEFLAG(RestoreReserve, restore_reserve) | ^~~~~~~~~ -- In file included from include/linux/migrate.h:8, from kernel/sched/sched.h:53, from kernel/sched/core.c:13: include/linux/hugetlb.h: In function 'HPageRestoreReserve': 512 | return 0 } | ^ include/linux/hugetlb.h:524:2: note: in expansion of macro 'TESTHPAGEFLAG' 524 | TESTHPAGEFLAG(uname, flname) \ | ^~~~~~~~~~~~~ include/linux/hugetlb.h:531:1: note: in expansion of macro 'HPAGEFLAG' 531 | HPAGEFLAG(RestoreReserve, restore_reserve) | ^~~~~~~~~ kernel/sched/core.c: In function 'ttwu_stat': kernel/sched/core.c:2955:13: warning: variable 'rq' set but not used [-Wunused-but-set-variable] 2955 | struct rq *rq; | ^~ kernel/sched/core.c: In function 'schedule_tail': kernel/sched/core.c:4298:13: warning: variable 'rq' set but not used [-Wunused-but-set-variable] 4298 | struct rq *rq; | ^~ -- In file included from include/linux/migrate.h:8, from kernel/sched/sched.h:53, from kernel/sched/fair.c:23: include/linux/hugetlb.h: In function 'HPageRestoreReserve': 512 | return 0 } | ^ include/linux/hugetlb.h:524:2: note: in expansion of macro 'TESTHPAGEFLAG' 524 | TESTHPAGEFLAG(uname, flname) \ | ^~~~~~~~~~~~~ include/linux/hugetlb.h:531:1: note: in expansion of macro 'HPAGEFLAG' 531 | HPAGEFLAG(RestoreReserve, restore_reserve) | ^~~~~~~~~ kernel/sched/fair.c: At top level: kernel/sched/fair.c:5399:6: warning: no previous prototype for 'init_cfs_bandwidth' [-Wmissing-prototypes] 5399 | void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {} | ^~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11218:6: warning: no previous prototype for 'free_fair_sched_group' [-Wmissing-prototypes] 11218 | void free_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11220:5: warning: no previous prototype for 'alloc_fair_sched_group' [-Wmissing-prototypes] 11220 | int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11225:6: warning: no previous prototype for 'online_fair_sched_group' [-Wmissing-prototypes] 11225 | void online_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11227:6: warning: no previous prototype for 'unregister_fair_sched_group' [-Wmissing-prototypes] 11227 | void unregister_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from include/linux/migrate.h:8, from kernel/sched/sched.h:53, from kernel/sched/rt.c:6: include/linux/hugetlb.h: In function 'HPageRestoreReserve': 512 | return 0 } | ^ include/linux/hugetlb.h:524:2: note: in expansion of macro 'TESTHPAGEFLAG' 524 | TESTHPAGEFLAG(uname, flname) \ | ^~~~~~~~~~~~~ include/linux/hugetlb.h:531:1: note: in expansion of macro 'HPAGEFLAG' 531 | HPAGEFLAG(RestoreReserve, restore_reserve) | ^~~~~~~~~ kernel/sched/rt.c: At top level: kernel/sched/rt.c:253:6: warning: no previous prototype for 'free_rt_sched_group' [-Wmissing-prototypes] 253 | void free_rt_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~ kernel/sched/rt.c:255:5: warning: no previous prototype for 'alloc_rt_sched_group' [-Wmissing-prototypes] 255 | int alloc_rt_sched_group(struct task_group *tg, struct task_group *parent) | ^~~~~~~~~~~~~~~~~~~~ kernel/sched/rt.c:669:6: warning: no previous prototype for 'sched_rt_bandwidth_account' [-Wmissing-prototypes] 669 | bool sched_rt_bandwidth_account(struct rt_rq *rt_rq) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from include/linux/migrate.h:8, from mm/page_alloc.c:61: include/linux/hugetlb.h: In function 'HPageRestoreReserve': 512 | return 0 } | ^ include/linux/hugetlb.h:524:2: note: in expansion of macro 'TESTHPAGEFLAG' 524 | TESTHPAGEFLAG(uname, flname) \ | ^~~~~~~~~~~~~ include/linux/hugetlb.h:531:1: note: in expansion of macro 'HPAGEFLAG' 531 | HPAGEFLAG(RestoreReserve, restore_reserve) | ^~~~~~~~~ mm/page_alloc.c: At top level: mm/page_alloc.c:2618:5: warning: no previous prototype for 'find_suitable_fallback' [-Wmissing-prototypes] 2618 | int find_suitable_fallback(struct free_area *area, unsigned int order, | ^~~~~~~~~~~~~~~~~~~~~~ mm/page_alloc.c:3597:15: warning: no previous prototype for 'should_fail_alloc_page' [-Wmissing-prototypes] 3597 | noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) | ^~~~~~~~~~~~~~~~~~~~~~ mm/page_alloc.c:6257:23: warning: no previous prototype for 'memmap_init' [-Wmissing-prototypes] 6257 | void __meminit __weak memmap_init(unsigned long size, int nid, | ^~~~~~~~~~~ -- In file included from fs/proc/meminfo.c:6: include/linux/hugetlb.h: In function 'HPageRestoreReserve': 512 | return 0 } | ^ include/linux/hugetlb.h:524:2: note: in expansion of macro 'TESTHPAGEFLAG' 524 | TESTHPAGEFLAG(uname, flname) \ | ^~~~~~~~~~~~~ include/linux/hugetlb.h:531:1: note: in expansion of macro 'HPAGEFLAG' 531 | HPAGEFLAG(RestoreReserve, restore_reserve) | ^~~~~~~~~ fs/proc/meminfo.c: At top level: fs/proc/meminfo.c:22:28: warning: no previous prototype for 'arch_report_meminfo' [-Wmissing-prototypes] 22 | void __attribute__((weak)) arch_report_meminfo(struct seq_file *m) | ^~~~~~~~~~~~~~~~~~~ -- In file included from kernel/events/core.c:31: include/linux/hugetlb.h: In function 'HPageRestoreReserve': 512 | return 0 } | ^ include/linux/hugetlb.h:524:2: note: in expansion of macro 'TESTHPAGEFLAG' 524 | TESTHPAGEFLAG(uname, flname) \ | ^~~~~~~~~~~~~ include/linux/hugetlb.h:531:1: note: in expansion of macro 'HPAGEFLAG' 531 | HPAGEFLAG(RestoreReserve, restore_reserve) | ^~~~~~~~~ kernel/events/core.c: At top level: kernel/events/core.c:6539:6: warning: no previous prototype for 'perf_pmu_snapshot_aux' [-Wmissing-prototypes] 6539 | long perf_pmu_snapshot_aux(struct perf_buffer *rb, | ^~~~~~~~~~~~~~~~~~~~~ vim +512 include/linux/hugetlb.h 488 489 /* 490 * Macros to create test, set and clear function definitions for 491 * hugetlb specific page flags. 492 */ 493 #ifdef CONFIG_HUGETLB_PAGE 494 #define TESTHPAGEFLAG(uname, flname) \ 495 static inline int HPage##uname(struct page *page) \ 496 { BUILD_BUG_ON(sizeof_field(struct page, private) * \ 497 BITS_PER_BYTE < __NR_HPAGEFLAGS); \ 498 return test_bit(HPG_##flname, &(page->private)); } 499 500 #define SETHPAGEFLAG(uname, flname) \ 501 static inline void SetHPage##uname(struct page *page) \ 502 { set_bit(HPG_##flname, &(page->private)); } 503 504 #define CLEARHPAGEFLAG(uname, flname) \ 505 static inline void ClearHPage##uname(struct page *page) \ 506 { clear_bit(HPG_##flname, &(page->private)); } 507 #else 508 #define TESTHPAGEFLAG(uname, flname) \ 509 static inline int HPage##uname(struct page *page) \ 510 { BUILD_BUG_ON(sizeof_field(struct page, private) * \ 511 BITS_PER_BYTE < __NR_HPAGEFLAGS); \ 513 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org