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0a1c49db SR |
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 | * | |
d7315094 | 29 | * * for structures within structures, the format of the internal |
25985edc | 30 | * structure is laid out. This allows the internal structure |
d7315094 SR |
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 | * | |
0a1c49db SR |
52 | * @print: the print format shown to users in the format file. |
53 | */ | |
54 | ||
55 | /* | |
b595076a | 56 | * Function trace entry - function address and parent function address: |
0a1c49db SR |
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( | |
d7315094 SR |
76 | __field_struct( struct ftrace_graph_ent, graph_ent ) |
77 | __field_desc( unsigned long, graph_ent, func ) | |
78 | __field_desc( int, graph_ent, depth ) | |
0a1c49db SR |
79 | ), |
80 | ||
c16de8fd | 81 | F_printk("--> %lx (%d)", __entry->func, __entry->depth) |
0a1c49db SR |
82 | ); |
83 | ||
84 | /* Function return entry */ | |
85 | FTRACE_ENTRY(funcgraph_exit, ftrace_graph_ret_entry, | |
86 | ||
87 | TRACE_GRAPH_RET, | |
88 | ||
89 | F_STRUCT( | |
d7315094 SR |
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 ) | |
0a1c49db SR |
96 | ), |
97 | ||
98 | F_printk("<-- %lx (%d) (start: %llx end: %llx) over: %d", | |
99 | __entry->func, __entry->depth, | |
c16de8fd LZ |
100 | __entry->calltime, __entry->rettime, |
101 | __entry->depth) | |
0a1c49db SR |
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 ) \ | |
140e4f2d DS |
112 | __field( unsigned int, next_pid ) \ |
113 | __field( unsigned int, next_cpu ) \ | |
0a1c49db SR |
114 | __field( unsigned char, prev_prio ) \ |
115 | __field( unsigned char, prev_state ) \ | |
0a1c49db | 116 | __field( unsigned char, next_prio ) \ |
140e4f2d | 117 | __field( unsigned char, next_state ) |
0a1c49db | 118 | |
0a1c49db SR |
119 | FTRACE_ENTRY(context_switch, ctx_switch_entry, |
120 | ||
121 | TRACE_CTX, | |
122 | ||
123 | F_STRUCT( | |
124 | FTRACE_CTX_FIELDS | |
125 | ), | |
126 | ||
c16de8fd | 127 | F_printk("%u:%u:%u ==> %u:%u:%u [%03u]", |
0a1c49db SR |
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 | ||
0a1c49db SR |
153 | /* |
154 | * Stack-trace entry: | |
155 | */ | |
156 | ||
157 | #define FTRACE_STACK_ENTRIES 8 | |
158 | ||
159 | FTRACE_ENTRY(kernel_stack, stack_entry, | |
160 | ||
161 | TRACE_STACK, | |
162 | ||
163 | F_STRUCT( | |
4a9bd3f1 SR |
164 | __field( int, size ) |
165 | __dynamic_array(unsigned long, caller ) | |
0a1c49db SR |
166 | ), |
167 | ||
168 | F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n" | |
169 | "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n", | |
170 | __entry->caller[0], __entry->caller[1], __entry->caller[2], | |
171 | __entry->caller[3], __entry->caller[4], __entry->caller[5], | |
172 | __entry->caller[6], __entry->caller[7]) | |
173 | ); | |
174 | ||
175 | FTRACE_ENTRY(user_stack, userstack_entry, | |
176 | ||
177 | TRACE_USER_STACK, | |
178 | ||
179 | F_STRUCT( | |
180 | __field( unsigned int, tgid ) | |
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 | /* | |
192 | * trace_printk entry: | |
193 | */ | |
194 | FTRACE_ENTRY(bprint, bprint_entry, | |
195 | ||
196 | TRACE_BPRINT, | |
197 | ||
198 | F_STRUCT( | |
199 | __field( unsigned long, ip ) | |
200 | __field( const char *, fmt ) | |
201 | __dynamic_array( u32, buf ) | |
202 | ), | |
203 | ||
204 | F_printk("%08lx fmt:%p", | |
205 | __entry->ip, __entry->fmt) | |
206 | ); | |
207 | ||
208 | FTRACE_ENTRY(print, print_entry, | |
209 | ||
210 | TRACE_PRINT, | |
211 | ||
212 | F_STRUCT( | |
213 | __field( unsigned long, ip ) | |
214 | __dynamic_array( char, buf ) | |
215 | ), | |
216 | ||
217 | F_printk("%08lx %s", | |
218 | __entry->ip, __entry->buf) | |
219 | ); | |
220 | ||
221 | FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw, | |
222 | ||
223 | TRACE_MMIO_RW, | |
224 | ||
225 | F_STRUCT( | |
d7315094 SR |
226 | __field_struct( struct mmiotrace_rw, rw ) |
227 | __field_desc( resource_size_t, rw, phys ) | |
228 | __field_desc( unsigned long, rw, value ) | |
229 | __field_desc( unsigned long, rw, pc ) | |
230 | __field_desc( int, rw, map_id ) | |
231 | __field_desc( unsigned char, rw, opcode ) | |
232 | __field_desc( unsigned char, rw, width ) | |
0a1c49db SR |
233 | ), |
234 | ||
c16de8fd LZ |
235 | F_printk("%lx %lx %lx %d %x %x", |
236 | (unsigned long)__entry->phys, __entry->value, __entry->pc, | |
0a1c49db SR |
237 | __entry->map_id, __entry->opcode, __entry->width) |
238 | ); | |
239 | ||
240 | FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map, | |
241 | ||
242 | TRACE_MMIO_MAP, | |
243 | ||
244 | F_STRUCT( | |
d7315094 SR |
245 | __field_struct( struct mmiotrace_map, map ) |
246 | __field_desc( resource_size_t, map, phys ) | |
247 | __field_desc( unsigned long, map, virt ) | |
248 | __field_desc( unsigned long, map, len ) | |
249 | __field_desc( int, map, map_id ) | |
250 | __field_desc( unsigned char, map, opcode ) | |
0a1c49db SR |
251 | ), |
252 | ||
c16de8fd LZ |
253 | F_printk("%lx %lx %lx %d %x", |
254 | (unsigned long)__entry->phys, __entry->virt, __entry->len, | |
0a1c49db SR |
255 | __entry->map_id, __entry->opcode) |
256 | ); | |
257 | ||
0a1c49db SR |
258 | |
259 | #define TRACE_FUNC_SIZE 30 | |
260 | #define TRACE_FILE_SIZE 20 | |
261 | ||
262 | FTRACE_ENTRY(branch, trace_branch, | |
263 | ||
264 | TRACE_BRANCH, | |
265 | ||
266 | F_STRUCT( | |
267 | __field( unsigned int, line ) | |
268 | __array( char, func, TRACE_FUNC_SIZE+1 ) | |
269 | __array( char, file, TRACE_FILE_SIZE+1 ) | |
270 | __field( char, correct ) | |
271 | ), | |
272 | ||
273 | F_printk("%u:%s:%s (%u)", | |
274 | __entry->line, | |
275 | __entry->func, __entry->file, __entry->correct) | |
276 | ); | |
277 |