1 /* SPDX-License-Identifier: GPL-2.0 */
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.
7 * The macro used to create a ftrace data structure is:
9 * FTRACE_ENTRY( name, struct_name, id, structure, print )
11 * @name: the name used the event name, as well as the name of
12 * the directory that holds the format file.
14 * @struct_name: the name of the structure that is created.
16 * @id: The event identifier that is used to detect what event
17 * this is from the ring buffer.
19 * @structure: the structure layout
21 * - __field( type, item )
22 * This is equivalent to declaring
25 * - __array( type, item, size )
26 * This is equivalent to declaring
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 * internel structures are just tracing helpers, this is not
38 * When an internal structure is used, it should use:
40 * __field_struct( type, item )
42 * instead of __field. This will prevent it from being shown in
43 * the output file. The fields in the structure should use.
45 * __field_desc( type, container, item )
46 * __array_desc( type, container, item, len )
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.
53 * @print: the print format shown to users in the format file.
57 * Function trace entry - function address and parent function address:
59 FTRACE_ENTRY_REG(function
, ftrace_entry
,
64 __field( unsigned long, ip
)
65 __field( unsigned long, parent_ip
)
68 F_printk(" %lx <-- %lx", __entry
->ip
, __entry
->parent_ip
),
72 perf_ftrace_event_register
75 /* Function call entry */
76 FTRACE_ENTRY_PACKED(funcgraph_entry
, ftrace_graph_ent_entry
,
81 __field_struct( struct ftrace_graph_ent
, graph_ent
)
82 __field_desc( unsigned long, graph_ent
, func
)
83 __field_desc( int, graph_ent
, depth
)
86 F_printk("--> %lx (%d)", __entry
->func
, __entry
->depth
),
91 /* Function return entry */
92 FTRACE_ENTRY_PACKED(funcgraph_exit
, ftrace_graph_ret_entry
,
97 __field_struct( struct ftrace_graph_ret
, ret
)
98 __field_desc( unsigned long, ret
, func
)
99 __field_desc( unsigned long long, ret
, calltime
)
100 __field_desc( unsigned long long, ret
, rettime
)
101 __field_desc( unsigned long, ret
, overrun
)
102 __field_desc( int, ret
, depth
)
105 F_printk("<-- %lx (%d) (start: %llx end: %llx) over: %d",
106 __entry
->func
, __entry
->depth
,
107 __entry
->calltime
, __entry
->rettime
,
114 * Context switch trace entry - which task (and prio) we switched from/to:
116 * This is used for both wakeup and context switches. We only want
117 * to create one structure, but we need two outputs for it.
119 #define FTRACE_CTX_FIELDS \
120 __field( unsigned int, prev_pid ) \
121 __field( unsigned int, next_pid ) \
122 __field( unsigned int, next_cpu ) \
123 __field( unsigned char, prev_prio ) \
124 __field( unsigned char, prev_state ) \
125 __field( unsigned char, next_prio ) \
126 __field( unsigned char, next_state )
128 FTRACE_ENTRY(context_switch
, ctx_switch_entry
,
136 F_printk("%u:%u:%u ==> %u:%u:%u [%03u]",
137 __entry
->prev_pid
, __entry
->prev_prio
, __entry
->prev_state
,
138 __entry
->next_pid
, __entry
->next_prio
, __entry
->next_state
,
145 * FTRACE_ENTRY_DUP only creates the format file, it will not
146 * create another structure.
148 FTRACE_ENTRY_DUP(wakeup
, ctx_switch_entry
,
156 F_printk("%u:%u:%u ==+ %u:%u:%u [%03u]",
157 __entry
->prev_pid
, __entry
->prev_prio
, __entry
->prev_state
,
158 __entry
->next_pid
, __entry
->next_prio
, __entry
->next_state
,
168 #define FTRACE_STACK_ENTRIES 8
171 # define IP_FMT "%08lx"
173 # define IP_FMT "%016lx"
176 FTRACE_ENTRY(kernel_stack
, stack_entry
,
182 __dynamic_array(unsigned long, caller
)
185 F_printk("\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n"
186 "\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n"
187 "\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n",
188 __entry
->caller
[0], __entry
->caller
[1], __entry
->caller
[2],
189 __entry
->caller
[3], __entry
->caller
[4], __entry
->caller
[5],
190 __entry
->caller
[6], __entry
->caller
[7]),
195 FTRACE_ENTRY(user_stack
, userstack_entry
,
200 __field( unsigned int, tgid
)
201 __array( unsigned long, caller
, FTRACE_STACK_ENTRIES
)
204 F_printk("\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n"
205 "\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n"
206 "\t=> (" IP_FMT
")\n\t=> (" IP_FMT
")\n",
207 __entry
->caller
[0], __entry
->caller
[1], __entry
->caller
[2],
208 __entry
->caller
[3], __entry
->caller
[4], __entry
->caller
[5],
209 __entry
->caller
[6], __entry
->caller
[7]),
215 * trace_printk entry:
217 FTRACE_ENTRY(bprint
, bprint_entry
,
222 __field( unsigned long, ip
)
223 __field( const char *, fmt
)
224 __dynamic_array( u32
, buf
)
228 (void *)__entry
->ip
, __entry
->fmt
),
233 FTRACE_ENTRY(print
, print_entry
,
238 __field( unsigned long, ip
)
239 __dynamic_array( char, buf
)
243 (void *)__entry
->ip
, __entry
->buf
),
248 FTRACE_ENTRY(raw_data
, raw_data_entry
,
253 __field( unsigned int, id
)
254 __dynamic_array( char, buf
)
257 F_printk("id:%04x %08x",
258 __entry
->id
, (int)__entry
->buf
[0]),
263 FTRACE_ENTRY(bputs
, bputs_entry
,
268 __field( unsigned long, ip
)
269 __field( const char *, str
)
273 (void *)__entry
->ip
, __entry
->str
),
278 FTRACE_ENTRY(mmiotrace_rw
, trace_mmiotrace_rw
,
283 __field_struct( struct mmiotrace_rw
, rw
)
284 __field_desc( resource_size_t
, rw
, phys
)
285 __field_desc( unsigned long, rw
, value
)
286 __field_desc( unsigned long, rw
, pc
)
287 __field_desc( int, rw
, map_id
)
288 __field_desc( unsigned char, rw
, opcode
)
289 __field_desc( unsigned char, rw
, width
)
292 F_printk("%lx %lx %lx %d %x %x",
293 (unsigned long)__entry
->phys
, __entry
->value
, __entry
->pc
,
294 __entry
->map_id
, __entry
->opcode
, __entry
->width
),
299 FTRACE_ENTRY(mmiotrace_map
, trace_mmiotrace_map
,
304 __field_struct( struct mmiotrace_map
, map
)
305 __field_desc( resource_size_t
, map
, phys
)
306 __field_desc( unsigned long, map
, virt
)
307 __field_desc( unsigned long, map
, len
)
308 __field_desc( int, map
, map_id
)
309 __field_desc( unsigned char, map
, opcode
)
312 F_printk("%lx %lx %lx %d %x",
313 (unsigned long)__entry
->phys
, __entry
->virt
, __entry
->len
,
314 __entry
->map_id
, __entry
->opcode
),
320 #define TRACE_FUNC_SIZE 30
321 #define TRACE_FILE_SIZE 20
323 FTRACE_ENTRY(branch
, trace_branch
,
328 __field( unsigned int, line
)
329 __array( char, func
, TRACE_FUNC_SIZE
+1 )
330 __array( char, file
, TRACE_FILE_SIZE
+1 )
331 __field( char, correct
)
332 __field( char, constant
)
335 F_printk("%u:%s:%s (%u)%s",
337 __entry
->func
, __entry
->file
, __entry
->correct
,
338 __entry
->constant
? " CONSTANT" : ""),
344 FTRACE_ENTRY(hwlat
, hwlat_entry
,
349 __field( u64
, duration
)
350 __field( u64
, outer_duration
)
351 __field( u64
, nmi_total_ts
)
352 __field_struct( struct timespec64
, timestamp
)
353 __field_desc( s64
, timestamp
, tv_sec
)
354 __field_desc( long, timestamp
, tv_nsec
)
355 __field( unsigned int, nmi_count
)
356 __field( unsigned int, seqnum
)
359 F_printk("cnt:%u\tts:%010llu.%010lu\tinner:%llu\touter:%llunmi-ts:%llu\tnmi-count:%u\n",
364 __entry
->outer_duration
,
365 __entry
->nmi_total_ts
,