Hi Tang, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 3841d75a6dcd12d108aaf56560b99431d18169e4 commit: 1cfc25ccec44c17c19c892bd31d00d8f6fb23f9b [18309/23799] share_pool: Add proc node to show process overview info config: arm64-randconfig-003-20240928 (https://download.01.org/0day-ci/archive/20240928/202409281617.XJYO7emb-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240928/202409281617.XJYO7emb-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202409281617.XJYO7emb-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/share_pool.c: In function 'sp_group_id_by_pid': mm/share_pool.c:840:29: warning: ordered comparison of pointer with integer zero [-Wextra] 840 | if (!spg_ids || num <= 0) | ^~ mm/share_pool.c: In function 'sp_compact_nodes': mm/share_pool.c:1689:9: error: implicit declaration of function 'sysctl_compaction_handler'; did you mean 'sysctl_memcg_qos_handler'? [-Werror=implicit-function-declaration] 1689 | sysctl_compaction_handler(NULL, 1, NULL, NULL, NULL); | ^~~~~~~~~~~~~~~~~~~~~~~~~ | sysctl_memcg_qos_handler mm/share_pool.c: In function 'sp_hugetlb_entry': mm/share_pool.c:2688:21: error: implicit declaration of function 'huge_ptep_get' [-Werror=implicit-function-declaration] 2688 | pte_t pte = huge_ptep_get(ptep); | ^~~~~~~~~~~~~ mm/share_pool.c:2688:21: error: invalid initializer mm/share_pool.c: In function 'sharepool_no_page': mm/share_pool.c:3824:30: error: implicit declaration of function 'huge_pte_none'; did you mean 'huge_pte_lock'? [-Werror=implicit-function-declaration] 3824 | if (!huge_pte_none(huge_ptep_get(ptep))) { | ^~~~~~~~~~~~~ | huge_pte_lock mm/share_pool.c:3837:23: error: implicit declaration of function 'huge_add_to_page_cache'; did you mean 'add_to_page_cache'? [-Werror=implicit-function-declaration] 3837 | err = huge_add_to_page_cache(page, mapping, idx); | ^~~~~~~~~~~~~~~~~~~~~~ | add_to_page_cache mm/share_pool.c:3859:9: error: implicit declaration of function 'set_huge_pte_at'; did you mean 'set_huge_swap_pte_at'? [-Werror=implicit-function-declaration] 3859 | set_huge_pte_at(mm, haddr, ptep, new_pte); | ^~~~~~~~~~~~~~~ | set_huge_swap_pte_at mm/share_pool.c:3861:9: error: implicit declaration of function 'hugetlb_count_add'; did you mean 'hugetlb_count_sub'? [-Werror=implicit-function-declaration] 3861 | hugetlb_count_add(pages_per_huge_page(h), mm); | ^~~~~~~~~~~~~~~~~ | hugetlb_count_sub mm/share_pool.c:3797:13: warning: variable 'node_id' set but not used [-Wunused-but-set-variable] 3797 | int node_id; | ^~~~~~~ mm/share_pool.c: In function 'sp_alloc_pages': mm/share_pool.c:4018:24: error: implicit declaration of function 'hugetlb_alloc_hugepage'; did you mean 'vmalloc_hugepage'? [-Werror=implicit-function-declaration] 4018 | page = hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE); | ^~~~~~~~~~~~~~~~~~~~~~ | vmalloc_hugepage mm/share_pool.c:4018:61: error: 'HUGETLB_ALLOC_NONE' undeclared (first use in this function); did you mean 'HUGETLB_ANON_FILE'? 4018 | page = hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE); | ^~~~~~~~~~~~~~~~~~ | HUGETLB_ANON_FILE mm/share_pool.c:4018:61: note: each undeclared identifier is reported only once for each function it appears in mm/share_pool.c: At top level:

...

mm/share_pool.c:3736:12: warning: 'proc_overview_show' defined but not used [-Wunused-function] 3736 | static int proc_overview_show(struct seq_file *seq, void *offset) | ^~~~~~~~~~~~~~~~~~ mm/share_pool.c:3693:12: warning: 'proc_stat_show' defined but not used [-Wunused-function] 3693 | static int proc_stat_show(struct seq_file *seq, void *offset) | ^~~~~~~~~~~~~~ mm/share_pool.c:3635:12: warning: 'spa_stat_show' defined but not used [-Wunused-function] 3635 | static int spa_stat_show(struct seq_file *seq, void *offset) | ^~~~~~~~~~~~~ cc1: some warnings being treated as errors

vim +/proc_overview_show +3736 mm/share_pool.c 3735

3736 static int proc_overview_show(struct seq_file *seq, void *offset) 3737 { 3738 seq_printf(seq, "%-8s %-16s %-9s %-9s %-9s %-10s %-10s %-8s\n", 3739 "PID", "COMM", "SP_ALLOC", "SP_K2U", "SP_RES", "Non-SP_RES", 3740 "Non-SP_Shm", "VIRT"); 3741 3742 down_read(&sp_proc_stat_sem); 3743 idr_for_each(&sp_proc_stat_idr, idr_proc_overview_cb, seq); 3744 up_read(&sp_proc_stat_sem); 3745 return 0; 3746 } 3747

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