Hi Iouri, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.16 next-20220113] [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/Iouri-Tarassov/drivers-hv-dxgkrnl-Driver-overview/20220113-035836 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e3084ed48fd6b661fe434da0cb36d7d6706cf27f config: arm64-randconfig-r032-20220113 (https://download.01.org/0day-ci/archive/20220113/202201131549.w952i85x-lkp@xxxxxxxxx/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d1021978b8e7e35dcc30201ca1731d64b5a602a8) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/0day-ci/linux/commit/91a8d0866d1c0efc52ca8e1cb504e0ec15c979e2 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Iouri-Tarassov/drivers-hv-dxgkrnl-Driver-overview/20220113-035836 git checkout 91a8d0866d1c0efc52ca8e1cb504e0ec15c979e2 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/hv/dxgkrnl/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/hv/dxgkrnl/hmgr.c:85:5: warning: no previous prototype for function 'get_instance' [-Wmissing-prototypes] u32 get_instance(struct d3dkmthandle h) ^ drivers/hv/dxgkrnl/hmgr.c:85:1: note: declare 'static' if the function is not intended to be used outside of this translation unit u32 get_instance(struct d3dkmthandle h) ^ static >> drivers/hv/dxgkrnl/hmgr.c:172:6: warning: no previous prototype for function 'print_status' [-Wmissing-prototypes] void print_status(struct hmgrtable *table) ^ drivers/hv/dxgkrnl/hmgr.c:172:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void print_status(struct hmgrtable *table) ^ static >> drivers/hv/dxgkrnl/hmgr.c:551:21: warning: no previous prototype for function 'hmgrtable_get_entry_type' [-Wmissing-prototypes] enum hmgrentry_type hmgrtable_get_entry_type(struct hmgrtable *table, ^ drivers/hv/dxgkrnl/hmgr.c:551:1: note: declare 'static' if the function is not intended to be used outside of this translation unit enum hmgrentry_type hmgrtable_get_entry_type(struct hmgrtable *table, ^ static drivers/hv/dxgkrnl/hmgr.c:167:20: warning: unused function 'is_empty' [-Wunused-function] static inline bool is_empty(struct hmgrtable *table) ^ 4 warnings generated. -- >> drivers/hv/dxgkrnl/dxgadapter.c:261:6: warning: no previous prototype for function 'dxgdevice_mark_destroyed' [-Wmissing-prototypes] void dxgdevice_mark_destroyed(struct dxgdevice *device) ^ drivers/hv/dxgkrnl/dxgadapter.c:261:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dxgdevice_mark_destroyed(struct dxgdevice *device) ^ static 1 warning generated. vim +/get_instance +85 drivers/hv/dxgkrnl/hmgr.c 84 > 85 u32 get_instance(struct d3dkmthandle h) 86 { 87 return (h.v & HMGRHANDLE_INSTANCE_MASK) >> HMGRHANDLE_INSTANCE_SHIFT; 88 } 89 90 static bool is_handle_valid(struct hmgrtable *table, struct d3dkmthandle h, 91 bool ignore_destroyed, enum hmgrentry_type t) 92 { 93 u32 index = get_index(h); 94 u32 unique = get_unique(h); 95 struct hmgrentry *entry; 96 97 if (index >= table->table_size) { 98 pr_err("%s Invalid index %x %d\n", __func__, h.v, index); 99 return false; 100 } 101 102 entry = &table->entry_table[index]; 103 if (unique != entry->unique) { 104 pr_err("%s Invalid unique %x %d %d %d %p", 105 __func__, h.v, unique, entry->unique, 106 index, entry->object); 107 return false; 108 } 109 110 if (entry->destroyed && !ignore_destroyed) { 111 pr_err("%s Invalid destroyed", __func__); 112 return false; 113 } 114 115 if (entry->type == HMGRENTRY_TYPE_FREE) { 116 pr_err("%s Entry is freed %x %d", __func__, h.v, index); 117 return false; 118 } 119 120 if (t != HMGRENTRY_TYPE_FREE && t != entry->type) { 121 pr_err("%s type mismatch %x %d %d", __func__, h.v, 122 t, entry->type); 123 return false; 124 } 125 126 return true; 127 } 128 129 static struct d3dkmthandle build_handle(u32 index, u32 unique, u32 instance) 130 { 131 struct d3dkmthandle handle; 132 133 handle.v = (index << HMGRHANDLE_INDEX_SHIFT) & HMGRHANDLE_INDEX_MASK; 134 handle.v |= (unique << HMGRHANDLE_UNIQUE_SHIFT) & 135 HMGRHANDLE_UNIQUE_MASK; 136 handle.v |= (instance << HMGRHANDLE_INSTANCE_SHIFT) & 137 HMGRHANDLE_INSTANCE_MASK; 138 139 return handle; 140 } 141 142 inline u32 hmgrtable_get_used_entry_count(struct hmgrtable *table) 143 { 144 DXGKRNL_ASSERT(table->table_size >= table->free_count); 145 return (table->table_size - table->free_count); 146 } 147 148 bool hmgrtable_mark_destroyed(struct hmgrtable *table, struct d3dkmthandle h) 149 { 150 if (!is_handle_valid(table, h, false, HMGRENTRY_TYPE_FREE)) 151 return false; 152 153 table->entry_table[get_index(h)].destroyed = true; 154 return true; 155 } 156 157 bool hmgrtable_unmark_destroyed(struct hmgrtable *table, struct d3dkmthandle h) 158 { 159 if (!is_handle_valid(table, h, true, HMGRENTRY_TYPE_FREE)) 160 return true; 161 162 DXGKRNL_ASSERT(table->entry_table[get_index(h)].destroyed); 163 table->entry_table[get_index(h)].destroyed = 0; 164 return true; 165 } 166 167 static inline bool is_empty(struct hmgrtable *table) 168 { 169 return (table->free_count == table->table_size); 170 } 171 > 172 void print_status(struct hmgrtable *table) 173 { 174 int i; 175 176 dev_dbg(dxgglobaldev, "hmgrtable head, tail %p %d %d\n", 177 table, table->free_handle_list_head, 178 table->free_handle_list_tail); 179 if (table->entry_table == NULL) 180 return; 181 for (i = 0; i < 3; i++) { 182 if (table->entry_table[i].type != HMGRENTRY_TYPE_FREE) 183 dev_dbg(dxgglobaldev, "hmgrtable entry %p %d %p\n", 184 table, i, table->entry_table[i].object); 185 else 186 dev_dbg(dxgglobaldev, "hmgrtable entry %p %d %d %d\n", 187 table, i, 188 table->entry_table[i].next_free_index, 189 table->entry_table[i].prev_free_index); 190 } 191 } 192 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
