Hi Wang, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: c9fe32fed709da98069e8215f6ecf39ea63f5355 commit: df165ba49e6e4ce8b4f6076aded3b92e19918b03 [1369/14216] mm/sharepool: Add proc interfaces to show sp info config: arm64-randconfig-002-20240928 (https://download.01.org/0day-ci/archive/20240928/202409280347.fIsKo3PM-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240928/202409280347.fIsKo3PM-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/202409280347.fIsKo3PM-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/share_pool.c: In function 'sp_unshare_kva': mm/share_pool.c:2796:14: warning: variable 'is_hugepage' set but not used [-Wunused-but-set-variable] 2796 | bool is_hugepage = true; | ^~~~~~~~~~~ mm/share_pool.c: At top level:

...

mm/share_pool.c:3305:12: warning: 'proc_usage_show' defined but not used [-Wunused-function] 3305 | static int proc_usage_show(struct seq_file *seq, void *offset) | ^~~~~~~~~~~~~~~ mm/share_pool.c:3285:12: warning: 'proc_group_usage_show' defined but not used [-Wunused-function] 3285 | static int proc_group_usage_show(struct seq_file *seq, void *offset) | ^~~~~~~~~~~~~~~~~~~~~ mm/share_pool.c:3234:12: warning: 'spa_stat_show' defined but not used [-Wunused-function] 3234 | static int spa_stat_show(struct seq_file *seq, void *offset) | ^~~~~~~~~~~~~

vim +/proc_usage_show +3305 mm/share_pool.c 3284

3285 static int proc_group_usage_show(struct seq_file *seq, void *offset) 3286 { 3287 if (!should_show_statistics()) 3288 return -EPERM; 3289 3290 spg_overview_show(seq); 3291 spa_overview_show(seq); 3292 3293 /* print the file header */ 3294 seq_printf(seq, "%-8s %-8s %-9s %-9s %-9s %-8s %-7s %-7s %-4s\n", 3295 "PID", "Group_ID", "SP_ALLOC", "SP_K2U", "SP_RES", 3296 "VIRT", "RES", "Shm", "PROT"); 3297 3298 down_read(&sp_global_sem); 3299 idr_for_each(&sp_group_idr, proc_usage_by_group, seq); 3300 up_read(&sp_global_sem); 3301 3302 return 0; 3303 } 3304 3305 static int proc_usage_show(struct seq_file *seq, void *offset) 3306 { 3307 struct sp_group_master *master = NULL; 3308 unsigned long anon, file, shmem, total_rss; 3309 long sp_res, sp_res_nsize, non_sp_res, non_sp_shm; 3310 struct sp_meminfo *meminfo; 3311 3312 if (!should_show_statistics()) 3313 return -EPERM; 3314 3315 seq_printf(seq, "%-8s %-16s %-9s %-9s %-9s %-10s %-10s %-8s\n", 3316 "PID", "COMM", "SP_ALLOC", "SP_K2U", "SP_RES", "Non-SP_RES", 3317 "Non-SP_Shm", "VIRT"); 3318 3319 down_read(&sp_global_sem); 3320 mutex_lock(&master_list_lock); 3321 list_for_each_entry(master, &master_list, list_node) { 3322 meminfo = &master->meminfo; 3323 get_mm_rss_info(master->mm, &anon, &file, &shmem, &total_rss); 3324 get_process_sp_res(master, &sp_res, &sp_res_nsize); 3325 get_process_non_sp_res(total_rss, shmem, sp_res_nsize, 3326 &non_sp_res, &non_sp_shm); 3327 seq_printf(seq, "%-8d %-16s %-9ld %-9ld %-9ld %-10ld %-10ld %-8ld\n", 3328 master->tgid, master->comm, 3329 meminfo_alloc_sum_byKB(meminfo), 3330 meminfo_k2u_size(meminfo), 3331 sp_res, non_sp_res, non_sp_shm, 3332 page2kb(master->mm->total_vm)); 3333 } 3334 mutex_unlock(&master_list_lock); 3335 up_read(&sp_global_sem); 3336 3337 return 0; 3338 } 3339

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