Hi Ding, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 4c37b6449701a1fcb16050d4e517fa6d505673e1 commit: 4a280fac30d27ae2aff096f9f99aa12d50f83426 [1297/1297] ascend: share_pool: support share pool features for ascend platform config: arm64-randconfig-002-20241117 (https://download.01.org/0day-ci/archive/20241117/202411170503.vMx47JY5-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241117/202411170503.vMx47JY5-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/202411170503.vMx47JY5-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

mm/share_pool.c:2235:12: warning: 'spa_stat_show' defined but not used [-Wunused-function] 2235 | static int spa_stat_show(struct seq_file *seq, void *offset) | ^~~~~~~~~~~~~ mm/share_pool.c:2121:12: warning: 'proc_stat_show' defined but not used [-Wunused-function] 2121 | static int proc_stat_show(struct seq_file *seq, void *offset) | ^~~~~~~~~~~~~~ mm/share_pool.c:1069: warning: Function parameter or member 'size' not described in 'sp_alloc' mm/share_pool.c:1069: warning: Function parameter or member 'sp_flags' not described in 'sp_alloc' mm/share_pool.c:1069: warning: Function parameter or member 'spg_id' not described in 'sp_alloc' mm/share_pool.c:1582: warning: Function parameter or member 'uva' not described in '__sp_walk_page_range' mm/share_pool.c:1582: warning: Function parameter or member 'size' not described in '__sp_walk_page_range' mm/share_pool.c:1582: warning: Function parameter or member 'tsk' not described in '__sp_walk_page_range' mm/share_pool.c:1582: warning: Function parameter or member 'sp_walk_data' not described in '__sp_walk_page_range' mm/share_pool.c:1931: warning: Function parameter or member 'uva' not described in 'sp_walk_page_range' mm/share_pool.c:1931: warning: Function parameter or member 'size' not described in 'sp_walk_page_range' mm/share_pool.c:1931: warning: Function parameter or member 'tsk' not described in 'sp_walk_page_range' mm/share_pool.c:1931: warning: Function parameter or member 'sp_walk_data' not described in 'sp_walk_page_range'

vim +/spa_stat_show +2235 mm/share_pool.c 2120

2121 static int proc_stat_show(struct seq_file *seq, void *offset) 2122 { 2123 /* print the file header */ 2124 seq_printf(seq, "%-12s %-10s %-18s\n", 2125 "Process ID", "Group ID", "Aligned Apply(KB)"); 2126 /* print kthread buff_module_guard_work */ 2127 seq_printf(seq, "%-12s %-10s %-18ld\n", 2128 "guard", "-", byte2kb(kthread_stat.amount)); 2129 idr_for_each(&sp_stat_idr, idr_proc_stat_cb, seq); 2130 return 0; 2131 } 2132 2133 static void rb_spa_stat_show(struct seq_file *seq) 2134 { 2135 struct rb_node *node; 2136 struct sp_area *spa; 2137 2138 spin_lock(&sp_area_lock); 2139 2140 for (node = rb_first(&sp_area_root); node; node = rb_next(node)) { 2141 spa = rb_entry(node, struct sp_area, rb_node); 2142 atomic_inc(&spa->use_count); 2143 spin_unlock(&sp_area_lock); 2144 2145 mutex_lock(&sp_mutex); 2146 if (spg_valid(spa->spg)) 2147 seq_printf(seq, "%-10d ", spa->spg->id); 2148 else /* k2u for task or spg is dead */ 2149 seq_printf(seq, "%-10s ", "None"); 2150 mutex_unlock(&sp_mutex); 2151 2152 seq_printf(seq, "%2s%-14lx %2s%-14lx %-13ld ", 2153 "0x", spa->va_start, 2154 "0x", spa->va_end, 2155 byte2kb(spa->real_size)); 2156 2157 switch (spa->type) { 2158 case SPA_TYPE_ALLOC: 2159 seq_printf(seq, "%-7s ", "ALLOC"); 2160 break; 2161 case SPA_TYPE_K2TASK: 2162 seq_printf(seq, "%-7s ", "TASK"); 2163 break; 2164 case SPA_TYPE_K2SPG: 2165 seq_printf(seq, "%-7s ", "SPG"); 2166 break; 2167 default: 2168 /* usually impossible, perhaps a developer's mistake */ 2169 break; 2170 } 2171 2172 if (spa->is_hugepage) 2173 seq_printf(seq, "%-5s ", "Y"); 2174 else 2175 seq_printf(seq, "%-5s ", "N"); 2176 2177 seq_printf(seq, "%-10d\n", atomic_read(&spa->use_count)); 2178 2179 spin_lock(&sp_area_lock); 2180 __sp_area_drop_locked(spa); 2181 } 2182 2183 spin_unlock(&sp_area_lock); 2184 } 2185 2186 static void spa_overview_show(struct seq_file *seq) 2187 { 2188 unsigned int total_num, alloc_num, k2u_task_num, k2u_spg_num; 2189 unsigned long total_size, alloc_size, k2u_task_size, k2u_spg_size; 2190 2191 spin_lock(&sp_area_lock); 2192 total_num = spa_stat.total_num; 2193 alloc_num = spa_stat.alloc_num; 2194 k2u_task_num = spa_stat.k2u_task_num; 2195 k2u_spg_num = spa_stat.k2u_spg_num; 2196 total_size = spa_stat.total_size; 2197 alloc_size = spa_stat.alloc_size; 2198 k2u_task_size = spa_stat.k2u_task_size; 2199 k2u_spg_size = spa_stat.k2u_spg_size; 2200 spin_unlock(&sp_area_lock); 2201 2202 seq_printf(seq, "Spa total num %u.\n", total_num); 2203 seq_printf(seq, "Spa alloc num %u, k2u(task) num %u, k2u(spg) num %u.\n", 2204 alloc_num, k2u_task_num, k2u_spg_num); 2205 seq_printf(seq, "Spa total size: %13lu KB\n", byte2kb(total_size)); 2206 seq_printf(seq, "Spa alloc size: %13lu KB\n", byte2kb(alloc_size)); 2207 seq_printf(seq, "Spa k2u(task) size: %13lu KB\n", byte2kb(k2u_task_size)); 2208 seq_printf(seq, "Spa k2u(spg) size: %13lu KB\n", byte2kb(k2u_spg_size)); 2209 seq_printf(seq, "\n"); 2210 } 2211 2212 /* the caller must hold sp_mutex */ 2213 static int idr_spg_stat_cb(int id, void *p, void *data) 2214 { 2215 struct sp_group *spg = p; 2216 struct seq_file *seq = data; 2217 2218 seq_printf(seq, "Group %-10d size: %13d KB, spa num: %d.\n", 2219 id, byte2kb(atomic_read(&spg->size)), 2220 atomic_read(&spg->spa_num)); 2221 2222 return 0; 2223 } 2224 2225 static void spg_overview_show(struct seq_file *seq) 2226 { 2227 mutex_lock(&sp_mutex); 2228 idr_for_each(&sp_group_idr, idr_spg_stat_cb, seq); 2229 mutex_unlock(&sp_mutex); 2230 seq_printf(seq, "Share pool total size: %13d KB, spa total num: %d.\n\n", 2231 byte2kb(atomic_read(&spg_stat.spa_total_size)), 2232 atomic_read(&spg_stat.spa_total_num)); 2233 } 2234 2235 static int spa_stat_show(struct seq_file *seq, void *offset) 2236 { 2237 spg_overview_show(seq); 2238 spa_overview_show(seq); 2239 /* print the file header */ 2240 seq_printf(seq, "%-10s %-16s %-16s %-13s %-7s %-5s %-10s\n", 2241 "Group ID", "va_start", "va_end", "Aligned KB", "Type", "Huge", "Ref"); 2242 rb_spa_stat_show(seq); 2243 return 0; 2244 } 2245

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