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Steven Rostedt0a1c49d2009-09-12 19:17:15 -04001/*
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 *
Steven Rostedtd7315092009-09-12 19:22:23 -040029 * * for structures within structures, the format of the internal
Lucas De Marchi25985ed2011-03-30 22:57:33 -030030 * structure is laid out. This allows the internal structure
Steven Rostedtd7315092009-09-12 19:22:23 -040031 * 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 *
Steven Rostedt0a1c49d2009-09-12 19:17:15 -040052 * @print: the print format shown to users in the format file.
53 */
54
55/*
Uwe Kleine-Königb5950762010-11-01 15:38:34 -040056 * Function trace entry - function address and parent function address:
Steven Rostedt0a1c49d2009-09-12 19:17:15 -040057 */
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(
Steven Rostedtd7315092009-09-12 19:22:23 -040076 __field_struct( struct ftrace_graph_ent, graph_ent )
77 __field_desc( unsigned long, graph_ent, func )
78 __field_desc( int, graph_ent, depth )
Steven Rostedt0a1c49d2009-09-12 19:17:15 -040079 ),
80
Li Zefanc16de8f2009-09-14 15:51:39 +080081 F_printk("--> %lx (%d)", __entry->func, __entry->depth)
Steven Rostedt0a1c49d2009-09-12 19:17:15 -040082);
83
84/* Function return entry */
85FTRACE_ENTRY(funcgraph_exit, ftrace_graph_ret_entry,
86
87 TRACE_GRAPH_RET,
88
89 F_STRUCT(
Steven Rostedtd7315092009-09-12 19:22:23 -040090 __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 )
Steven Rostedt0a1c49d2009-09-12 19:17:15 -040096 ),
97
98 F_printk("<-- %lx (%d) (start: %llx end: %llx) over: %d",
99 __entry->func, __entry->depth,
Li Zefanc16de8f2009-09-14 15:51:39 +0800100 __entry->calltime, __entry->rettime,
101 __entry->depth)
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400102);
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 ) \
David Sharp140e4f22010-12-03 16:13:19 -0800112 __field( unsigned int, next_pid ) \
113 __field( unsigned int, next_cpu ) \
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400114 __field( unsigned char, prev_prio ) \
115 __field( unsigned char, prev_state ) \
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400116 __field( unsigned char, next_prio ) \
David Sharp140e4f22010-12-03 16:13:19 -0800117 __field( unsigned char, next_state )
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400118
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400119FTRACE_ENTRY(context_switch, ctx_switch_entry,
120
121 TRACE_CTX,
122
123 F_STRUCT(
124 FTRACE_CTX_FIELDS
125 ),
126
Li Zefanc16de8f2009-09-14 15:51:39 +0800127 F_printk("%u:%u:%u ==> %u:%u:%u [%03u]",
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400128 __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/*
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400154 * 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(
Steven Rostedt4a9bd3f2011-07-14 16:36:53 -0400164 __field( int, size )
165 __dynamic_array(unsigned long, caller )
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400166 ),
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
175FTRACE_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 */
194FTRACE_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
208FTRACE_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
221FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,
222
223 TRACE_MMIO_RW,
224
225 F_STRUCT(
Steven Rostedtd7315092009-09-12 19:22:23 -0400226 __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 )
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400233 ),
234
Li Zefanc16de8f2009-09-14 15:51:39 +0800235 F_printk("%lx %lx %lx %d %x %x",
236 (unsigned long)__entry->phys, __entry->value, __entry->pc,
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400237 __entry->map_id, __entry->opcode, __entry->width)
238);
239
240FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
241
242 TRACE_MMIO_MAP,
243
244 F_STRUCT(
Steven Rostedtd7315092009-09-12 19:22:23 -0400245 __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 )
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400251 ),
252
Li Zefanc16de8f2009-09-14 15:51:39 +0800253 F_printk("%lx %lx %lx %d %x",
254 (unsigned long)__entry->phys, __entry->virt, __entry->len,
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400255 __entry->map_id, __entry->opcode)
256);
257
Steven Rostedt0a1c49d2009-09-12 19:17:15 -0400258
259#define TRACE_FUNC_SIZE 30
260#define TRACE_FILE_SIZE 20
261
262FTRACE_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