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