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.
6 * The macro used to create a ftrace data structure is:
8 * FTRACE_ENTRY( name, struct_name, id, structure, print )
10 * @name: the name used the event name, as well as the name of
11 * the directory that holds the format file.
13 * @struct_name: the name of the structure that is created.
15 * @id: The event identifier that is used to detect what event
16 * this is from the ring buffer.
18 * @structure: the structure layout
20 * - __field( type, item )
21 * This is equivalent to declaring
24 * - __array( type, item, size )
25 * This is equivalent to declaring
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
37 * When an internal structure is used, it should use:
39 * __field_struct( type, item )
41 * instead of __field. This will prevent it from being shown in
42 * the output file. The fields in the structure should use.
44 * __field_desc( type, container, item )
45 * __array_desc( type, container, item, len )
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.
52 * @print: the print format shown to users in the format file.
56 * Function trace entry - function address and parent function address:
58 FTRACE_ENTRY(function, ftrace_entry,
63 __field( unsigned long, ip )
64 __field( unsigned long, parent_ip )
67 F_printk(" %lx <-- %lx", __entry->ip, __entry->parent_ip)
70 /* Function call entry */
71 FTRACE_ENTRY(funcgraph_entry, ftrace_graph_ent_entry,
76 __field_struct( struct ftrace_graph_ent, graph_ent )
77 __field_desc( unsigned long, graph_ent, func )
78 __field_desc( int, graph_ent, depth )
81 F_printk("--> %lx (%d)", __entry->func, __entry->depth)
84 /* Function return entry */
85 FTRACE_ENTRY(funcgraph_exit, ftrace_graph_ret_entry,
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 )
98 F_printk("<-- %lx (%d) (start: %llx end: %llx) over: %d",
99 __entry->func, __entry->depth,
100 __entry->calltime, __entry->rettime,
105 * Context switch trace entry - which task (and prio) we switched from/to:
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.
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 )
119 FTRACE_ENTRY(context_switch, ctx_switch_entry,
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,
135 * FTRACE_ENTRY_DUP only creates the format file, it will not
136 * create another structure.
138 FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry,
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,
157 #define FTRACE_STACK_ENTRIES 8
159 FTRACE_ENTRY(kernel_stack, stack_entry,
164 __array( unsigned long, caller, FTRACE_STACK_ENTRIES )
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])
174 FTRACE_ENTRY(user_stack, userstack_entry,
179 __field( unsigned int, tgid )
180 __array( unsigned long, caller, FTRACE_STACK_ENTRIES )
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])
191 * trace_printk entry:
193 FTRACE_ENTRY(bprint, bprint_entry,
198 __field( unsigned long, ip )
199 __field( const char *, fmt )
200 __dynamic_array( u32, buf )
203 F_printk("%08lx fmt:%p",
204 __entry->ip, __entry->fmt)
207 FTRACE_ENTRY(print, print_entry,
212 __field( unsigned long, ip )
213 __dynamic_array( char, buf )
217 __entry->ip, __entry->buf)
220 FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,
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 )
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)
239 FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
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 )
252 F_printk("%lx %lx %lx %d %x",
253 (unsigned long)__entry->phys, __entry->virt, __entry->len,
254 __entry->map_id, __entry->opcode)
258 #define TRACE_FUNC_SIZE 30
259 #define TRACE_FILE_SIZE 20
261 FTRACE_ENTRY(branch, trace_branch,
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 )
272 F_printk("%u:%s:%s (%u)",
274 __entry->func, __entry->file, __entry->correct)