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 */ 58FTRACE_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 */ 71FTRACE_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 */ 85FTRACE_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 119FTRACE_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 */ 138FTRACE_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 * Stack-trace entry: 155 */ 156 157#define FTRACE_STACK_ENTRIES 8 158 159FTRACE_ENTRY(kernel_stack, stack_entry, 160 161 TRACE_STACK, 162 163 F_STRUCT( 164 __array( unsigned long, caller, FTRACE_STACK_ENTRIES ) 165 ), 166 167 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n" 168 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n", 169 __entry->caller[0], __entry->caller[1], __entry->caller[2], 170 __entry->caller[3], __entry->caller[4], __entry->caller[5], 171 __entry->caller[6], __entry->caller[7]) 172); 173 174FTRACE_ENTRY(user_stack, userstack_entry, 175 176 TRACE_USER_STACK, 177 178 F_STRUCT( 179 __field( unsigned int, tgid ) 180 __array( unsigned long, caller, FTRACE_STACK_ENTRIES ) 181 ), 182 183 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n" 184 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n", 185 __entry->caller[0], __entry->caller[1], __entry->caller[2], 186 __entry->caller[3], __entry->caller[4], __entry->caller[5], 187 __entry->caller[6], __entry->caller[7]) 188); 189 190/* 191 * trace_printk entry: 192 */ 193FTRACE_ENTRY(bprint, bprint_entry, 194 195 TRACE_BPRINT, 196 197 F_STRUCT( 198 __field( unsigned long, ip ) 199 __field( const char *, fmt ) 200 __dynamic_array( u32, buf ) 201 ), 202 203 F_printk("%08lx fmt:%p", 204 __entry->ip, __entry->fmt) 205); 206 207FTRACE_ENTRY(print, print_entry, 208 209 TRACE_PRINT, 210 211 F_STRUCT( 212 __field( unsigned long, ip ) 213 __dynamic_array( char, buf ) 214 ), 215 216 F_printk("%08lx %s", 217 __entry->ip, __entry->buf) 218); 219 220FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw, 221 222 TRACE_MMIO_RW, 223 224 F_STRUCT( 225 __field_struct( struct mmiotrace_rw, rw ) 226 __field_desc( resource_size_t, rw, phys ) 227 __field_desc( unsigned long, rw, value ) 228 __field_desc( unsigned long, rw, pc ) 229 __field_desc( int, rw, map_id ) 230 __field_desc( unsigned char, rw, opcode ) 231 __field_desc( unsigned char, rw, width ) 232 ), 233 234 F_printk("%lx %lx %lx %d %x %x", 235 (unsigned long)__entry->phys, __entry->value, __entry->pc, 236 __entry->map_id, __entry->opcode, __entry->width) 237); 238 239FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map, 240 241 TRACE_MMIO_MAP, 242 243 F_STRUCT( 244 __field_struct( struct mmiotrace_map, map ) 245 __field_desc( resource_size_t, map, phys ) 246 __field_desc( unsigned long, map, virt ) 247 __field_desc( unsigned long, map, len ) 248 __field_desc( int, map, map_id ) 249 __field_desc( unsigned char, map, opcode ) 250 ), 251 252 F_printk("%lx %lx %lx %d %x", 253 (unsigned long)__entry->phys, __entry->virt, __entry->len, 254 __entry->map_id, __entry->opcode) 255); 256 257 258#define TRACE_FUNC_SIZE 30 259#define TRACE_FILE_SIZE 20 260 261FTRACE_ENTRY(branch, trace_branch, 262 263 TRACE_BRANCH, 264 265 F_STRUCT( 266 __field( unsigned int, line ) 267 __array( char, func, TRACE_FUNC_SIZE+1 ) 268 __array( char, file, TRACE_FILE_SIZE+1 ) 269 __field( char, correct ) 270 ), 271 272 F_printk("%u:%s:%s (%u)", 273 __entry->line, 274 __entry->func, __entry->file, __entry->correct) 275); 276