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 addres:
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 )
120 FTRACE_ENTRY_STRUCT_ONLY(ctx_switch_entry,
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,
144 * FTRACE_ENTRY_DUP only creates the format file, it will not
145 * create another structure.
147 FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry,
155 F_printk("%u:%u:%u ==+ %u:%u:%u [%03u]",
156 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
157 __entry->next_pid, __entry->next_prio, __entry->next_state,
163 * Special (free-form) trace entry:
165 FTRACE_ENTRY(special, special_entry,
170 __field( unsigned long, arg1 )
171 __field( unsigned long, arg2 )
172 __field( unsigned long, arg3 )
175 F_printk("(%08lx) (%08lx) (%08lx)",
176 __entry->arg1, __entry->arg2, __entry->arg3)
183 #define FTRACE_STACK_ENTRIES 8
185 FTRACE_ENTRY(kernel_stack, stack_entry,
190 __array( unsigned long, caller, FTRACE_STACK_ENTRIES )
193 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
194 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",
195 __entry->caller[0], __entry->caller[1], __entry->caller[2],
196 __entry->caller[3], __entry->caller[4], __entry->caller[5],
197 __entry->caller[6], __entry->caller[7])
200 FTRACE_ENTRY(user_stack, userstack_entry,
205 __field( unsigned int, tgid )
206 __array( unsigned long, caller, FTRACE_STACK_ENTRIES )
209 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
210 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",
211 __entry->caller[0], __entry->caller[1], __entry->caller[2],
212 __entry->caller[3], __entry->caller[4], __entry->caller[5],
213 __entry->caller[6], __entry->caller[7])
217 * trace_printk entry:
219 FTRACE_ENTRY(bprint, bprint_entry,
224 __field( unsigned long, ip )
225 __field( const char *, fmt )
226 __dynamic_array( u32, buf )
229 F_printk("%08lx fmt:%p",
230 __entry->ip, __entry->fmt)
233 FTRACE_ENTRY(print, print_entry,
238 __field( unsigned long, ip )
239 __dynamic_array( char, buf )
243 __entry->ip, __entry->buf)
246 FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,
251 __field_struct( struct mmiotrace_rw, rw )
252 __field_desc( resource_size_t, rw, phys )
253 __field_desc( unsigned long, rw, value )
254 __field_desc( unsigned long, rw, pc )
255 __field_desc( int, rw, map_id )
256 __field_desc( unsigned char, rw, opcode )
257 __field_desc( unsigned char, rw, width )
260 F_printk("%lx %lx %lx %d %x %x",
261 (unsigned long)__entry->phys, __entry->value, __entry->pc,
262 __entry->map_id, __entry->opcode, __entry->width)
265 FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
270 __field_struct( struct mmiotrace_map, map )
271 __field_desc( resource_size_t, map, phys )
272 __field_desc( unsigned long, map, virt )
273 __field_desc( unsigned long, map, len )
274 __field_desc( int, map, map_id )
275 __field_desc( unsigned char, map, opcode )
278 F_printk("%lx %lx %lx %d %x",
279 (unsigned long)__entry->phys, __entry->virt, __entry->len,
280 __entry->map_id, __entry->opcode)
283 FTRACE_ENTRY(boot_call, trace_boot_call,
288 __field_struct( struct boot_trace_call, boot_call )
289 __field_desc( pid_t, boot_call, caller )
290 __array_desc( char, boot_call, func, KSYM_SYMBOL_LEN)
293 F_printk("%d %s", __entry->caller, __entry->func)
296 FTRACE_ENTRY(boot_ret, trace_boot_ret,
301 __field_struct( struct boot_trace_ret, boot_ret )
302 __array_desc( char, boot_ret, func, KSYM_SYMBOL_LEN)
303 __field_desc( int, boot_ret, result )
304 __field_desc( unsigned long, boot_ret, duration )
307 F_printk("%s %d %lx",
308 __entry->func, __entry->result, __entry->duration)
311 #define TRACE_FUNC_SIZE 30
312 #define TRACE_FILE_SIZE 20
314 FTRACE_ENTRY(branch, trace_branch,
319 __field( unsigned int, line )
320 __array( char, func, TRACE_FUNC_SIZE+1 )
321 __array( char, file, TRACE_FILE_SIZE+1 )
322 __field( char, correct )
325 F_printk("%u:%s:%s (%u)",
327 __entry->func, __entry->file, __entry->correct)
330 FTRACE_ENTRY(hw_branch, hw_branch_entry,
339 F_printk("from: %llx to: %llx", __entry->from, __entry->to)
342 FTRACE_ENTRY(power, trace_power,
347 __field_struct( struct power_trace, state_data )
348 __field_desc( s64, state_data, stamp )
349 __field_desc( s64, state_data, end )
350 __field_desc( int, state_data, type )
351 __field_desc( int, state_data, state )
354 F_printk("%llx->%llx type:%u state:%u",
355 __entry->stamp, __entry->end,
356 __entry->type, __entry->state)
359 FTRACE_ENTRY(kmem_alloc, kmemtrace_alloc_entry,
364 __field( enum kmemtrace_type_id, type_id )
365 __field( unsigned long, call_site )
366 __field( const void *, ptr )
367 __field( size_t, bytes_req )
368 __field( size_t, bytes_alloc )
369 __field( gfp_t, gfp_flags )
373 F_printk("type:%u call_site:%lx ptr:%p req:%zi alloc:%zi"
375 __entry->type_id, __entry->call_site, __entry->ptr,
376 __entry->bytes_req, __entry->bytes_alloc,
377 __entry->gfp_flags, __entry->node)
380 FTRACE_ENTRY(kmem_free, kmemtrace_free_entry,
385 __field( enum kmemtrace_type_id, type_id )
386 __field( unsigned long, call_site )
387 __field( const void *, ptr )
390 F_printk("type:%u call_site:%lx ptr:%p",
391 __entry->type_id, __entry->call_site, __entry->ptr)