1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * This file defines the trace event structures that go into the ring 4 * buffer directly. They are created via macros so that changes for them 5 * appear in the format file. Using macros will automate this process. 6 * 7 * The macro used to create a ftrace data structure is: 8 * 9 * FTRACE_ENTRY( name, struct_name, id, structure, print ) 10 * 11 * @name: the name used the event name, as well as the name of 12 * the directory that holds the format file. 13 * 14 * @struct_name: the name of the structure that is created. 15 * 16 * @id: The event identifier that is used to detect what event 17 * this is from the ring buffer. 18 * 19 * @structure: the structure layout 20 * 21 * - __field( type, item ) 22 * This is equivalent to declaring 23 * type item; 24 * in the structure. 25 * - __array( type, item, size ) 26 * This is equivalent to declaring 27 * type item[size]; 28 * in the structure. 29 * 30 * * for structures within structures, the format of the internal 31 * structure is laid out. This allows the internal structure 32 * to be deciphered for the format file. Although these macros 33 * may become out of sync with the internal structure, they 34 * will create a compile error if it happens. Since the 35 * internal structures are just tracing helpers, this is not 36 * an issue. 37 * 38 * When an internal structure is used, it should use: 39 * 40 * __field_struct( type, item ) 41 * 42 * instead of __field. This will prevent it from being shown in 43 * the output file. The fields in the structure should use. 44 * 45 * __field_desc( type, container, item ) 46 * __array_desc( type, container, item, len ) 47 * 48 * type, item and len are the same as __field and __array, but 49 * container is added. This is the name of the item in 50 * __field_struct that this is describing. 51 * 52 * 53 * @print: the print format shown to users in the format file. 54 */ 55 56 /* 57 * Function trace entry - function address and parent function address: 58 */ 59 FTRACE_ENTRY_REG(function, ftrace_entry, 60 61 TRACE_FN, 62 63 F_STRUCT( 64 __field_fn( unsigned long, ip ) 65 __field_fn( unsigned long, parent_ip ) 66 __dynamic_array( unsigned long, args ) 67 ), 68 69 F_printk(" %ps <-- %ps", 70 (void *)__entry->ip, (void *)__entry->parent_ip), 71 72 perf_ftrace_event_register 73 ); 74 75 /* Function call entry */ 76 FTRACE_ENTRY(funcgraph_entry, ftrace_graph_ent_entry, 77 78 TRACE_GRAPH_ENT, 79 80 F_STRUCT( 81 __field_struct( struct ftrace_graph_ent, graph_ent ) 82 __field_packed( unsigned long, graph_ent, func ) 83 __field_packed( unsigned long, graph_ent, depth ) 84 __dynamic_array(unsigned long, args ) 85 ), 86 87 F_printk("--> %ps (%lu)", (void *)__entry->func, __entry->depth) 88 ); 89 90 #ifdef CONFIG_FUNCTION_GRAPH_RETADDR 91 92 /* Function call entry with a return address */ 93 FTRACE_ENTRY_PACKED(fgraph_retaddr_entry, fgraph_retaddr_ent_entry, 94 95 TRACE_GRAPH_RETADDR_ENT, 96 97 F_STRUCT( 98 __field_struct( struct fgraph_retaddr_ent, graph_ent ) 99 __field_packed( unsigned long, graph_ent, func ) 100 __field_packed( int, graph_ent, depth ) 101 __field_packed( unsigned long, graph_ent, retaddr ) 102 ), 103 104 F_printk("--> %ps (%d) <- %ps", (void *)__entry->func, __entry->depth, 105 (void *)__entry->retaddr) 106 ); 107 108 #else 109 110 #ifndef fgraph_retaddr_ent_entry 111 #define fgraph_retaddr_ent_entry ftrace_graph_ent_entry 112 #endif 113 114 #endif 115 116 #ifdef CONFIG_FUNCTION_GRAPH_RETVAL 117 118 /* Function return entry */ 119 FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry, 120 121 TRACE_GRAPH_RET, 122 123 F_STRUCT( 124 __field_struct( struct ftrace_graph_ret, ret ) 125 __field_packed( unsigned long, ret, func ) 126 __field_packed( unsigned long, ret, retval ) 127 __field_packed( int, ret, depth ) 128 __field_packed( unsigned int, ret, overrun ) 129 __field(unsigned long long, calltime ) 130 __field(unsigned long long, rettime ) 131 ), 132 133 F_printk("<-- %ps (%d) (start: %llx end: %llx) over: %d retval: %lx", 134 (void *)__entry->func, __entry->depth, 135 __entry->calltime, __entry->rettime, 136 __entry->depth, __entry->retval) 137 ); 138 139 #else 140 141 /* Function return entry */ 142 FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry, 143 144 TRACE_GRAPH_RET, 145 146 F_STRUCT( 147 __field_struct( struct ftrace_graph_ret, ret ) 148 __field_packed( unsigned long, ret, func ) 149 __field_packed( int, ret, depth ) 150 __field_packed( unsigned int, ret, overrun ) 151 __field(unsigned long long, calltime ) 152 __field(unsigned long long, rettime ) 153 ), 154 155 F_printk("<-- %ps (%d) (start: %llx end: %llx) over: %d", 156 (void *)__entry->func, __entry->depth, 157 __entry->calltime, __entry->rettime, 158 __entry->depth) 159 ); 160 161 #endif 162 163 /* 164 * Context switch trace entry - which task (and prio) we switched from/to: 165 * 166 * This is used for both wakeup and context switches. We only want 167 * to create one structure, but we need two outputs for it. 168 */ 169 #define FTRACE_CTX_FIELDS \ 170 __field( unsigned int, prev_pid ) \ 171 __field( unsigned int, next_pid ) \ 172 __field( unsigned int, next_cpu ) \ 173 __field( unsigned char, prev_prio ) \ 174 __field( unsigned char, prev_state ) \ 175 __field( unsigned char, next_prio ) \ 176 __field( unsigned char, next_state ) 177 178 FTRACE_ENTRY(context_switch, ctx_switch_entry, 179 180 TRACE_CTX, 181 182 F_STRUCT( 183 FTRACE_CTX_FIELDS 184 ), 185 186 F_printk("%u:%u:%u ==> %u:%u:%u [%03u]", 187 __entry->prev_pid, __entry->prev_prio, __entry->prev_state, 188 __entry->next_pid, __entry->next_prio, __entry->next_state, 189 __entry->next_cpu) 190 ); 191 192 /* 193 * FTRACE_ENTRY_DUP only creates the format file, it will not 194 * create another structure. 195 */ 196 FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry, 197 198 TRACE_WAKE, 199 200 F_STRUCT( 201 FTRACE_CTX_FIELDS 202 ), 203 204 F_printk("%u:%u:%u ==+ %u:%u:%u [%03u]", 205 __entry->prev_pid, __entry->prev_prio, __entry->prev_state, 206 __entry->next_pid, __entry->next_prio, __entry->next_state, 207 __entry->next_cpu) 208 ); 209 210 /* 211 * Stack-trace entry: 212 */ 213 214 #define FTRACE_STACK_ENTRIES 8 215 216 FTRACE_ENTRY(kernel_stack, stack_entry, 217 218 TRACE_STACK, 219 220 F_STRUCT( 221 __field( int, size ) 222 __stack_array( unsigned long, caller, FTRACE_STACK_ENTRIES, size) 223 ), 224 225 F_printk("\t=> %ps\n\t=> %ps\n\t=> %ps\n" 226 "\t=> %ps\n\t=> %ps\n\t=> %ps\n" 227 "\t=> %ps\n\t=> %ps\n", 228 (void *)__entry->caller[0], (void *)__entry->caller[1], 229 (void *)__entry->caller[2], (void *)__entry->caller[3], 230 (void *)__entry->caller[4], (void *)__entry->caller[5], 231 (void *)__entry->caller[6], (void *)__entry->caller[7]) 232 ); 233 234 FTRACE_ENTRY(user_stack, userstack_entry, 235 236 TRACE_USER_STACK, 237 238 F_STRUCT( 239 __field( unsigned int, tgid ) 240 __array( unsigned long, caller, FTRACE_STACK_ENTRIES ) 241 ), 242 243 F_printk("\t=> %ps\n\t=> %ps\n\t=> %ps\n" 244 "\t=> %ps\n\t=> %ps\n\t=> %ps\n" 245 "\t=> %ps\n\t=> %ps\n", 246 (void *)__entry->caller[0], (void *)__entry->caller[1], 247 (void *)__entry->caller[2], (void *)__entry->caller[3], 248 (void *)__entry->caller[4], (void *)__entry->caller[5], 249 (void *)__entry->caller[6], (void *)__entry->caller[7]) 250 ); 251 252 /* 253 * trace_printk entry: 254 */ 255 FTRACE_ENTRY(bprint, bprint_entry, 256 257 TRACE_BPRINT, 258 259 F_STRUCT( 260 __field( unsigned long, ip ) 261 __field( const char *, fmt ) 262 __dynamic_array( u32, buf ) 263 ), 264 265 F_printk("%ps: %s", 266 (void *)__entry->ip, __entry->fmt) 267 ); 268 269 FTRACE_ENTRY_REG(print, print_entry, 270 271 TRACE_PRINT, 272 273 F_STRUCT( 274 __field( unsigned long, ip ) 275 __dynamic_array( char, buf ) 276 ), 277 278 F_printk("%ps: %s", 279 (void *)__entry->ip, __entry->buf), 280 281 ftrace_event_register 282 ); 283 284 FTRACE_ENTRY(raw_data, raw_data_entry, 285 286 TRACE_RAW_DATA, 287 288 F_STRUCT( 289 __field( unsigned int, id ) 290 __dynamic_array( char, buf ) 291 ), 292 293 F_printk("id:%04x %08x", 294 __entry->id, (int)__entry->buf[0]) 295 ); 296 297 FTRACE_ENTRY(bputs, bputs_entry, 298 299 TRACE_BPUTS, 300 301 F_STRUCT( 302 __field( unsigned long, ip ) 303 __field( const char *, str ) 304 ), 305 306 F_printk("%ps: %s", 307 (void *)__entry->ip, __entry->str) 308 ); 309 310 FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw, 311 312 TRACE_MMIO_RW, 313 314 F_STRUCT( 315 __field_struct( struct mmiotrace_rw, rw ) 316 __field_desc( resource_size_t, rw, phys ) 317 __field_desc( unsigned long, rw, value ) 318 __field_desc( unsigned long, rw, pc ) 319 __field_desc( int, rw, map_id ) 320 __field_desc( unsigned char, rw, opcode ) 321 __field_desc( unsigned char, rw, width ) 322 ), 323 324 F_printk("%lx %lx %lx %d %x %x", 325 (unsigned long)__entry->phys, __entry->value, __entry->pc, 326 __entry->map_id, __entry->opcode, __entry->width) 327 ); 328 329 FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map, 330 331 TRACE_MMIO_MAP, 332 333 F_STRUCT( 334 __field_struct( struct mmiotrace_map, map ) 335 __field_desc( resource_size_t, map, phys ) 336 __field_desc( unsigned long, map, virt ) 337 __field_desc( unsigned long, map, len ) 338 __field_desc( int, map, map_id ) 339 __field_desc( unsigned char, map, opcode ) 340 ), 341 342 F_printk("%lx %lx %lx %d %x", 343 (unsigned long)__entry->phys, __entry->virt, __entry->len, 344 __entry->map_id, __entry->opcode) 345 ); 346 347 348 #define TRACE_FUNC_SIZE 30 349 #define TRACE_FILE_SIZE 20 350 351 FTRACE_ENTRY(branch, trace_branch, 352 353 TRACE_BRANCH, 354 355 F_STRUCT( 356 __field( unsigned int, line ) 357 __array( char, func, TRACE_FUNC_SIZE+1 ) 358 __array( char, file, TRACE_FILE_SIZE+1 ) 359 __field( char, correct ) 360 __field( char, constant ) 361 ), 362 363 F_printk("%u:%s:%s (%u)%s", 364 __entry->line, 365 __entry->func, __entry->file, __entry->correct, 366 __entry->constant ? " CONSTANT" : "") 367 ); 368 369 370 FTRACE_ENTRY(hwlat, hwlat_entry, 371 372 TRACE_HWLAT, 373 374 F_STRUCT( 375 __field( u64, duration ) 376 __field( u64, outer_duration ) 377 __field( u64, nmi_total_ts ) 378 __field_struct( struct timespec64, timestamp ) 379 __field_desc( s64, timestamp, tv_sec ) 380 __field_desc( long, timestamp, tv_nsec ) 381 __field( unsigned int, nmi_count ) 382 __field( unsigned int, seqnum ) 383 __field( unsigned int, count ) 384 ), 385 386 F_printk("cnt:%u\tts:%010llu.%010lu\tinner:%llu\touter:%llu\tcount:%d\tnmi-ts:%llu\tnmi-count:%u\n", 387 __entry->seqnum, 388 __entry->tv_sec, 389 __entry->tv_nsec, 390 __entry->duration, 391 __entry->outer_duration, 392 __entry->count, 393 __entry->nmi_total_ts, 394 __entry->nmi_count) 395 ); 396 397 #define FUNC_REPEATS_GET_DELTA_TS(entry) \ 398 (((u64)(entry)->top_delta_ts << 32) | (entry)->bottom_delta_ts) \ 399 400 FTRACE_ENTRY(func_repeats, func_repeats_entry, 401 402 TRACE_FUNC_REPEATS, 403 404 F_STRUCT( 405 __field( unsigned long, ip ) 406 __field( unsigned long, parent_ip ) 407 __field( u16 , count ) 408 __field( u16 , top_delta_ts ) 409 __field( u32 , bottom_delta_ts ) 410 ), 411 412 F_printk(" %ps <-%ps\t(repeats:%u delta: -%llu)", 413 (void *)__entry->ip, 414 (void *)__entry->parent_ip, 415 __entry->count, 416 FUNC_REPEATS_GET_DELTA_TS(__entry)) 417 ); 418 419 FTRACE_ENTRY(osnoise, osnoise_entry, 420 421 TRACE_OSNOISE, 422 423 F_STRUCT( 424 __field( u64, noise ) 425 __field( u64, runtime ) 426 __field( u64, max_sample ) 427 __field( unsigned int, hw_count ) 428 __field( unsigned int, nmi_count ) 429 __field( unsigned int, irq_count ) 430 __field( unsigned int, softirq_count ) 431 __field( unsigned int, thread_count ) 432 ), 433 434 F_printk("noise:%llu\tmax_sample:%llu\thw:%u\tnmi:%u\tirq:%u\tsoftirq:%u\tthread:%u\n", 435 __entry->noise, 436 __entry->max_sample, 437 __entry->hw_count, 438 __entry->nmi_count, 439 __entry->irq_count, 440 __entry->softirq_count, 441 __entry->thread_count) 442 ); 443 444 FTRACE_ENTRY(timerlat, timerlat_entry, 445 446 TRACE_TIMERLAT, 447 448 F_STRUCT( 449 __field( unsigned int, seqnum ) 450 __field( int, context ) 451 __field( u64, timer_latency ) 452 ), 453 454 F_printk("seq:%u\tcontext:%d\ttimer_latency:%llu\n", 455 __entry->seqnum, 456 __entry->context, 457 __entry->timer_latency) 458 ); 459