powerpc/pmac: Add missing unlocks in error path
[linux-2.6/next.git] / kernel / trace / trace_entries.h
blobc16a08f399df53e9d9728d11e039f485b72e4986
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.
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
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.
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
35 * an issue.
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,
60 TRACE_FN,
62 F_STRUCT(
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,
73 TRACE_GRAPH_ENT,
75 F_STRUCT(
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,
87 TRACE_GRAPH_RET,
89 F_STRUCT(
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,
101 __entry->depth)
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,
121 TRACE_CTX,
123 F_STRUCT(
124 FTRACE_CTX_FIELDS
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,
130 __entry->next_cpu
135 * FTRACE_ENTRY_DUP only creates the format file, it will not
136 * create another structure.
138 FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry,
140 TRACE_WAKE,
142 F_STRUCT(
143 FTRACE_CTX_FIELDS
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
154 * Special (free-form) trace entry:
156 FTRACE_ENTRY(special, special_entry,
158 TRACE_SPECIAL,
160 F_STRUCT(
161 __field( unsigned long, arg1 )
162 __field( unsigned long, arg2 )
163 __field( unsigned long, arg3 )
166 F_printk("(%08lx) (%08lx) (%08lx)",
167 __entry->arg1, __entry->arg2, __entry->arg3)
171 * Stack-trace entry:
174 #define FTRACE_STACK_ENTRIES 8
176 FTRACE_ENTRY(kernel_stack, stack_entry,
178 TRACE_STACK,
180 F_STRUCT(
181 __array( unsigned long, caller, FTRACE_STACK_ENTRIES )
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])
191 FTRACE_ENTRY(user_stack, userstack_entry,
193 TRACE_USER_STACK,
195 F_STRUCT(
196 __field( unsigned int, tgid )
197 __array( unsigned long, caller, FTRACE_STACK_ENTRIES )
200 F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
201 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",
202 __entry->caller[0], __entry->caller[1], __entry->caller[2],
203 __entry->caller[3], __entry->caller[4], __entry->caller[5],
204 __entry->caller[6], __entry->caller[7])
208 * trace_printk entry:
210 FTRACE_ENTRY(bprint, bprint_entry,
212 TRACE_BPRINT,
214 F_STRUCT(
215 __field( unsigned long, ip )
216 __field( const char *, fmt )
217 __dynamic_array( u32, buf )
220 F_printk("%08lx fmt:%p",
221 __entry->ip, __entry->fmt)
224 FTRACE_ENTRY(print, print_entry,
226 TRACE_PRINT,
228 F_STRUCT(
229 __field( unsigned long, ip )
230 __dynamic_array( char, buf )
233 F_printk("%08lx %s",
234 __entry->ip, __entry->buf)
237 FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,
239 TRACE_MMIO_RW,
241 F_STRUCT(
242 __field_struct( struct mmiotrace_rw, rw )
243 __field_desc( resource_size_t, rw, phys )
244 __field_desc( unsigned long, rw, value )
245 __field_desc( unsigned long, rw, pc )
246 __field_desc( int, rw, map_id )
247 __field_desc( unsigned char, rw, opcode )
248 __field_desc( unsigned char, rw, width )
251 F_printk("%lx %lx %lx %d %x %x",
252 (unsigned long)__entry->phys, __entry->value, __entry->pc,
253 __entry->map_id, __entry->opcode, __entry->width)
256 FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
258 TRACE_MMIO_MAP,
260 F_STRUCT(
261 __field_struct( struct mmiotrace_map, map )
262 __field_desc( resource_size_t, map, phys )
263 __field_desc( unsigned long, map, virt )
264 __field_desc( unsigned long, map, len )
265 __field_desc( int, map, map_id )
266 __field_desc( unsigned char, map, opcode )
269 F_printk("%lx %lx %lx %d %x",
270 (unsigned long)__entry->phys, __entry->virt, __entry->len,
271 __entry->map_id, __entry->opcode)
274 FTRACE_ENTRY(boot_call, trace_boot_call,
276 TRACE_BOOT_CALL,
278 F_STRUCT(
279 __field_struct( struct boot_trace_call, boot_call )
280 __field_desc( pid_t, boot_call, caller )
281 __array_desc( char, boot_call, func, KSYM_SYMBOL_LEN)
284 F_printk("%d %s", __entry->caller, __entry->func)
287 FTRACE_ENTRY(boot_ret, trace_boot_ret,
289 TRACE_BOOT_RET,
291 F_STRUCT(
292 __field_struct( struct boot_trace_ret, boot_ret )
293 __array_desc( char, boot_ret, func, KSYM_SYMBOL_LEN)
294 __field_desc( int, boot_ret, result )
295 __field_desc( unsigned long, boot_ret, duration )
298 F_printk("%s %d %lx",
299 __entry->func, __entry->result, __entry->duration)
302 #define TRACE_FUNC_SIZE 30
303 #define TRACE_FILE_SIZE 20
305 FTRACE_ENTRY(branch, trace_branch,
307 TRACE_BRANCH,
309 F_STRUCT(
310 __field( unsigned int, line )
311 __array( char, func, TRACE_FUNC_SIZE+1 )
312 __array( char, file, TRACE_FILE_SIZE+1 )
313 __field( char, correct )
316 F_printk("%u:%s:%s (%u)",
317 __entry->line,
318 __entry->func, __entry->file, __entry->correct)
321 FTRACE_ENTRY(hw_branch, hw_branch_entry,
323 TRACE_HW_BRANCHES,
325 F_STRUCT(
326 __field( u64, from )
327 __field( u64, to )
330 F_printk("from: %llx to: %llx", __entry->from, __entry->to)
333 FTRACE_ENTRY(kmem_alloc, kmemtrace_alloc_entry,
335 TRACE_KMEM_ALLOC,
337 F_STRUCT(
338 __field( enum kmemtrace_type_id, type_id )
339 __field( unsigned long, call_site )
340 __field( const void *, ptr )
341 __field( size_t, bytes_req )
342 __field( size_t, bytes_alloc )
343 __field( gfp_t, gfp_flags )
344 __field( int, node )
347 F_printk("type:%u call_site:%lx ptr:%p req:%zi alloc:%zi"
348 " flags:%x node:%d",
349 __entry->type_id, __entry->call_site, __entry->ptr,
350 __entry->bytes_req, __entry->bytes_alloc,
351 __entry->gfp_flags, __entry->node)
354 FTRACE_ENTRY(kmem_free, kmemtrace_free_entry,
356 TRACE_KMEM_FREE,
358 F_STRUCT(
359 __field( enum kmemtrace_type_id, type_id )
360 __field( unsigned long, call_site )
361 __field( const void *, ptr )
364 F_printk("type:%u call_site:%lx ptr:%p",
365 __entry->type_id, __entry->call_site, __entry->ptr)
368 FTRACE_ENTRY(ksym_trace, ksym_trace_entry,
370 TRACE_KSYM,
372 F_STRUCT(
373 __field( unsigned long, ip )
374 __field( unsigned char, type )
375 __array( char , cmd, TASK_COMM_LEN )
376 __field( unsigned long, addr )
379 F_printk("ip: %pF type: %d ksym_name: %pS cmd: %s",
380 (void *)__entry->ip, (unsigned int)__entry->type,
381 (void *)__entry->addr, __entry->cmd)