1 /* 2 * This file defines the trace event structures that go into the ring 3 * buffer directly. They are created via macros so that changes for them 4 * appear in the format file. Using macros will automate this process. 5 * 6 * The macro used to create a ftrace data structure is: 7 * 8 * FTRACE_ENTRY( name, struct_name, id, structure, print ) 9 * 10 * @name: the name used the event name, as well as the name of 11 * the directory that holds the format file. 12 * 13 * @struct_name: the name of the structure that is created. 14 * 15 * @id: The event identifier that is used to detect what event 16 * this is from the ring buffer. 17 * 18 * @structure: the structure layout 19 * 20 * - __field( type, item ) 21 * This is equivalent to declaring 22 * type item; 23 * in the structure. 24 * - __array( type, item, size ) 25 * This is equivalent to declaring 26 * type item[size]; 27 * in the structure. 28 * 29 * * for structures within structures, the format of the internal 30 * structure is layed out. This allows the internal structure 31 * to be deciphered for the format file. Although these macros 32 * may become out of sync with the internal structure, they 33 * will create a compile error if it happens. Since the 34 * internel structures are just tracing helpers, this is not 35 * an issue. 36 * 37 * When an internal structure is used, it should use: 38 * 39 * __field_struct( type, item ) 40 * 41 * instead of __field. This will prevent it from being shown in 42 * the output file. The fields in the structure should use. 43 * 44 * __field_desc( type, container, item ) 45 * __array_desc( type, container, item, len ) 46 * 47 * type, item and len are the same as __field and __array, but 48 * container is added. This is the name of the item in 49 * __field_struct that this is describing. 50 * 51 * 52 * @print: the print format shown to users in the format file. 53 */ 54 55 /* 56 * Function trace entry - function address and parent function addres: 57 */ 58 FTRACE_ENTRY(function, ftrace_entry, 59 60 TRACE_FN, 61 62 F_STRUCT( 63 __field( unsigned long, ip ) 64 __field( unsigned long, parent_ip ) 65 ), 66 67 F_printk(" %lx <-- %lx", __entry->ip, __entry->parent_ip) 68 ); 69 70 /* Function call entry */ 71 FTRACE_ENTRY(funcgraph_entry, ftrace_graph_ent_entry, 72 73 TRACE_GRAPH_ENT, 74 75 F_STRUCT( 76 __field_struct( struct ftrace_graph_ent, graph_ent ) 77 __field_desc( unsigned long, graph_ent, func ) 78 __field_desc( int, graph_ent, depth ) 79 ), 80 81 F_printk("--> %lx (%d)", __entry->func, __entry->depth) 82 ); 83 84 /* Function return entry */ 85 FTRACE_ENTRY(funcgraph_exit, ftrace_graph_ret_entry, 86 87 TRACE_GRAPH_RET, 88 89 F_STRUCT( 90 __field_struct( struct ftrace_graph_ret, ret ) 91 __field_desc( unsigned long, ret, func ) 92 __field_desc( unsigned long long, ret, calltime) 93 __field_desc( unsigned long long, ret, rettime ) 94 __field_desc( unsigned long, ret, overrun ) 95 __field_desc( int, ret, depth ) 96 ), 97 98 F_printk("<-- %lx (%d) (start: %llx end: %llx) over: %d", 99 __entry->func, __entry->depth, 100 __entry->calltime, __entry->rettime, 101 __entry->depth) 102 ); 103 104 /* 105 * Context switch trace entry - which task (and prio) we switched from/to: 106 * 107 * This is used for both wakeup and context switches. We only want 108 * to create one structure, but we need two outputs for it. 109 */ 110 #define FTRACE_CTX_FIELDS \ 111 __field( unsigned int, prev_pid ) \ 112 __field( unsigned char, prev_prio ) \ 113 __field( unsigned char, prev_state ) \ 114 __field( unsigned int, next_pid ) \ 115 __field( unsigned char, next_prio ) \ 116 __field( unsigned char, next_state ) \ 117 __field( unsigned int, next_cpu ) 118 119 FTRACE_ENTRY(context_switch, ctx_switch_entry, 120 121 TRACE_CTX, 122 123 F_STRUCT( 124 FTRACE_CTX_FIELDS 125 ), 126 127 F_printk("%u:%u:%u ==> %u:%u:%u [%03u]", 128 __entry->prev_pid, __entry->prev_prio, __entry->prev_state, 129 __entry->next_pid, __entry->next_prio, __entry->next_state, 130 __entry->next_cpu 131 ) 132 ); 133 134 /* 135 * FTRACE_ENTRY_DUP only creates the format file, it will not 136 * create another structure. 137 */ 138 FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry, 139 140 TRACE_WAKE, 141 142 F_STRUCT( 143 FTRACE_CTX_FIELDS 144 ), 145 146 F_printk("%u:%u:%u ==+ %u:%u:%u [%03u]", 147 __entry->prev_pid, __entry->prev_prio, __entry->prev_state, 148 __entry->next_pid, __entry->next_prio, __entry->next_state, 149 __entry->next_cpu 150 ) 151 ); 152 153 /* 154 * Special (free-form) trace entry: 155 */ 156 FTRACE_ENTRY(special, special_entry, 157 158 TRACE_SPECIAL, 159 160 F_STRUCT( 161 __field( unsigned long, arg1 ) 162 __field( unsigned long, arg2 ) 163 __field( unsigned long, arg3 ) 164 ), 165 166 F_printk("(%08lx) (%08lx) (%08lx)", 167 __entry->arg1, __entry->arg2, __entry->arg3) 168 ); 169 170 /* 171 * Stack-trace entry: 172 */ 173 174 #define FTRACE_STACK_ENTRIES 8 175 176 FTRACE_ENTRY(kernel_stack, stack_entry, 177 178 TRACE_STACK, 179 180 F_STRUCT( 181 __array( unsigned long, caller, FTRACE_STACK_ENTRIES ) 182 ), 183 184 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n" 185 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n", 186 __entry->caller[0], __entry->caller[1], __entry->caller[2], 187 __entry->caller[3], __entry->caller[4], __entry->caller[5], 188 __entry->caller[6], __entry->caller[7]) 189 ); 190 191 FTRACE_ENTRY(user_stack, userstack_entry, 192 193 TRACE_USER_STACK, 194 195 F_STRUCT( 196 __field( unsigned int, tgid ) 197 __array( unsigned long, caller, FTRACE_STACK_ENTRIES ) 198 ), 199 200 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n" 201 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n", 202 __entry->caller[0], __entry->caller[1], __entry->caller[2], 203 __entry->caller[3], __entry->caller[4], __entry->caller[5], 204 __entry->caller[6], __entry->caller[7]) 205 ); 206 207 /* 208 * trace_printk entry: 209 */ 210 FTRACE_ENTRY(bprint, bprint_entry, 211 212 TRACE_BPRINT, 213 214 F_STRUCT( 215 __field( unsigned long, ip ) 216 __field( const char *, fmt ) 217 __dynamic_array( u32, buf ) 218 ), 219 220 F_printk("%08lx fmt:%p", 221 __entry->ip, __entry->fmt) 222 ); 223 224 FTRACE_ENTRY(print, print_entry, 225 226 TRACE_PRINT, 227 228 F_STRUCT( 229 __field( unsigned long, ip ) 230 __dynamic_array( char, buf ) 231 ), 232 233 F_printk("%08lx %s", 234 __entry->ip, __entry->buf) 235 ); 236 237 FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw, 238 239 TRACE_MMIO_RW, 240 241 F_STRUCT( 242 __field_struct( struct mmiotrace_rw, rw ) 243 __field_desc( resource_size_t, rw, phys ) 244 __field_desc( unsigned long, rw, value ) 245 __field_desc( unsigned long, rw, pc ) 246 __field_desc( int, rw, map_id ) 247 __field_desc( unsigned char, rw, opcode ) 248 __field_desc( unsigned char, rw, width ) 249 ), 250 251 F_printk("%lx %lx %lx %d %x %x", 252 (unsigned long)__entry->phys, __entry->value, __entry->pc, 253 __entry->map_id, __entry->opcode, __entry->width) 254 ); 255 256 FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map, 257 258 TRACE_MMIO_MAP, 259 260 F_STRUCT( 261 __field_struct( struct mmiotrace_map, map ) 262 __field_desc( resource_size_t, map, phys ) 263 __field_desc( unsigned long, map, virt ) 264 __field_desc( unsigned long, map, len ) 265 __field_desc( int, map, map_id ) 266 __field_desc( unsigned char, map, opcode ) 267 ), 268 269 F_printk("%lx %lx %lx %d %x", 270 (unsigned long)__entry->phys, __entry->virt, __entry->len, 271 __entry->map_id, __entry->opcode) 272 ); 273 274 FTRACE_ENTRY(boot_call, trace_boot_call, 275 276 TRACE_BOOT_CALL, 277 278 F_STRUCT( 279 __field_struct( struct boot_trace_call, boot_call ) 280 __field_desc( pid_t, boot_call, caller ) 281 __array_desc( char, boot_call, func, KSYM_SYMBOL_LEN) 282 ), 283 284 F_printk("%d %s", __entry->caller, __entry->func) 285 ); 286 287 FTRACE_ENTRY(boot_ret, trace_boot_ret, 288 289 TRACE_BOOT_RET, 290 291 F_STRUCT( 292 __field_struct( struct boot_trace_ret, boot_ret ) 293 __array_desc( char, boot_ret, func, KSYM_SYMBOL_LEN) 294 __field_desc( int, boot_ret, result ) 295 __field_desc( unsigned long, boot_ret, duration ) 296 ), 297 298 F_printk("%s %d %lx", 299 __entry->func, __entry->result, __entry->duration) 300 ); 301 302 #define TRACE_FUNC_SIZE 30 303 #define TRACE_FILE_SIZE 20 304 305 FTRACE_ENTRY(branch, trace_branch, 306 307 TRACE_BRANCH, 308 309 F_STRUCT( 310 __field( unsigned int, line ) 311 __array( char, func, TRACE_FUNC_SIZE+1 ) 312 __array( char, file, TRACE_FILE_SIZE+1 ) 313 __field( char, correct ) 314 ), 315 316 F_printk("%u:%s:%s (%u)", 317 __entry->line, 318 __entry->func, __entry->file, __entry->correct) 319 ); 320 321 FTRACE_ENTRY(hw_branch, hw_branch_entry, 322 323 TRACE_HW_BRANCHES, 324 325 F_STRUCT( 326 __field( u64, from ) 327 __field( u64, to ) 328 ), 329 330 F_printk("from: %llx to: %llx", __entry->from, __entry->to) 331 ); 332 333 FTRACE_ENTRY(kmem_alloc, kmemtrace_alloc_entry, 334 335 TRACE_KMEM_ALLOC, 336 337 F_STRUCT( 338 __field( enum kmemtrace_type_id, type_id ) 339 __field( unsigned long, call_site ) 340 __field( const void *, ptr ) 341 __field( size_t, bytes_req ) 342 __field( size_t, bytes_alloc ) 343 __field( gfp_t, gfp_flags ) 344 __field( int, node ) 345 ), 346 347 F_printk("type:%u call_site:%lx ptr:%p req:%zi alloc:%zi" 348 " flags:%x node:%d", 349 __entry->type_id, __entry->call_site, __entry->ptr, 350 __entry->bytes_req, __entry->bytes_alloc, 351 __entry->gfp_flags, __entry->node) 352 ); 353 354 FTRACE_ENTRY(kmem_free, kmemtrace_free_entry, 355 356 TRACE_KMEM_FREE, 357 358 F_STRUCT( 359 __field( enum kmemtrace_type_id, type_id ) 360 __field( unsigned long, call_site ) 361 __field( const void *, ptr ) 362 ), 363 364 F_printk("type:%u call_site:%lx ptr:%p", 365 __entry->type_id, __entry->call_site, __entry->ptr) 366 ); 367 368 FTRACE_ENTRY(ksym_trace, ksym_trace_entry, 369 370 TRACE_KSYM, 371 372 F_STRUCT( 373 __field( unsigned long, ip ) 374 __field( unsigned char, type ) 375 __array( char , cmd, TASK_COMM_LEN ) 376 __field( unsigned long, addr ) 377 ), 378 379 F_printk("ip: %pF type: %d ksym_name: %pS cmd: %s", 380 (void *)__entry->ip, (unsigned int)__entry->type, 381 (void *)__entry->addr, __entry->cmd) 382 ); 383