Commit | Line | Data |
---|---|---|
16444a8a ACM |
1 | #ifndef _LINUX_FTRACE_H |
2 | #define _LINUX_FTRACE_H | |
3 | ||
0012693a | 4 | #include <linux/trace_clock.h> |
5601020f | 5 | #include <linux/kallsyms.h> |
0012693a | 6 | #include <linux/linkage.h> |
ea4e2bc4 | 7 | #include <linux/bitops.h> |
0012693a FW |
8 | #include <linux/module.h> |
9 | #include <linux/ktime.h> | |
21a8c466 | 10 | #include <linux/sched.h> |
0012693a FW |
11 | #include <linux/types.h> |
12 | #include <linux/init.h> | |
13 | #include <linux/fs.h> | |
16444a8a | 14 | |
c79a61f5 UKK |
15 | #include <asm/ftrace.h> |
16 | ||
606576ce | 17 | #ifdef CONFIG_FUNCTION_TRACER |
3e1932ad | 18 | |
b0fc494f SR |
19 | extern int ftrace_enabled; |
20 | extern int | |
21 | ftrace_enable_sysctl(struct ctl_table *table, int write, | |
8d65af78 | 22 | void __user *buffer, size_t *lenp, |
b0fc494f SR |
23 | loff_t *ppos); |
24 | ||
16444a8a ACM |
25 | typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip); |
26 | ||
27 | struct ftrace_ops { | |
28 | ftrace_func_t func; | |
29 | struct ftrace_ops *next; | |
30 | }; | |
31 | ||
60a7ecf4 SR |
32 | extern int function_trace_stop; |
33 | ||
e7d3737e FW |
34 | /* |
35 | * Type of the current tracing. | |
36 | */ | |
37 | enum ftrace_tracing_type_t { | |
38 | FTRACE_TYPE_ENTER = 0, /* Hook the call of the function */ | |
39 | FTRACE_TYPE_RETURN, /* Hook the return of the function */ | |
40 | }; | |
41 | ||
42 | /* Current tracing type, default is FTRACE_TYPE_ENTER */ | |
43 | extern enum ftrace_tracing_type_t ftrace_tracing_type; | |
44 | ||
60a7ecf4 SR |
45 | /** |
46 | * ftrace_stop - stop function tracer. | |
47 | * | |
48 | * A quick way to stop the function tracer. Note this an on off switch, | |
49 | * it is not something that is recursive like preempt_disable. | |
50 | * This does not disable the calling of mcount, it only stops the | |
51 | * calling of functions from mcount. | |
52 | */ | |
53 | static inline void ftrace_stop(void) | |
54 | { | |
55 | function_trace_stop = 1; | |
56 | } | |
57 | ||
58 | /** | |
59 | * ftrace_start - start the function tracer. | |
60 | * | |
61 | * This function is the inverse of ftrace_stop. This does not enable | |
62 | * the function tracing if the function tracer is disabled. This only | |
63 | * sets the function tracer flag to continue calling the functions | |
64 | * from mcount. | |
65 | */ | |
66 | static inline void ftrace_start(void) | |
67 | { | |
68 | function_trace_stop = 0; | |
69 | } | |
70 | ||
16444a8a ACM |
71 | /* |
72 | * The ftrace_ops must be a static and should also | |
73 | * be read_mostly. These functions do modify read_mostly variables | |
74 | * so use them sparely. Never free an ftrace_op or modify the | |
75 | * next pointer after it has been registered. Even after unregistering | |
76 | * it, the next pointer may still be used internally. | |
77 | */ | |
78 | int register_ftrace_function(struct ftrace_ops *ops); | |
79 | int unregister_ftrace_function(struct ftrace_ops *ops); | |
80 | void clear_ftrace_function(void); | |
81 | ||
82 | extern void ftrace_stub(unsigned long a0, unsigned long a1); | |
16444a8a | 83 | |
606576ce | 84 | #else /* !CONFIG_FUNCTION_TRACER */ |
4dbf6bc2 SR |
85 | /* |
86 | * (un)register_ftrace_function must be a macro since the ops parameter | |
87 | * must not be evaluated. | |
88 | */ | |
89 | #define register_ftrace_function(ops) ({ 0; }) | |
90 | #define unregister_ftrace_function(ops) ({ 0; }) | |
91 | static inline void clear_ftrace_function(void) { } | |
81adbdc0 | 92 | static inline void ftrace_kill(void) { } |
60a7ecf4 SR |
93 | static inline void ftrace_stop(void) { } |
94 | static inline void ftrace_start(void) { } | |
606576ce | 95 | #endif /* CONFIG_FUNCTION_TRACER */ |
352ad25a | 96 | |
f38f1d2a SR |
97 | #ifdef CONFIG_STACK_TRACER |
98 | extern int stack_tracer_enabled; | |
99 | int | |
100 | stack_trace_sysctl(struct ctl_table *table, int write, | |
8d65af78 | 101 | void __user *buffer, size_t *lenp, |
f38f1d2a SR |
102 | loff_t *ppos); |
103 | #endif | |
104 | ||
f6180773 SR |
105 | struct ftrace_func_command { |
106 | struct list_head list; | |
107 | char *name; | |
108 | int (*func)(char *func, char *cmd, | |
109 | char *params, int enable); | |
110 | }; | |
111 | ||
3d083395 | 112 | #ifdef CONFIG_DYNAMIC_FTRACE |
31e88909 | 113 | |
000ab691 SR |
114 | int ftrace_arch_code_modify_prepare(void); |
115 | int ftrace_arch_code_modify_post_process(void); | |
116 | ||
809dcf29 SR |
117 | struct seq_file; |
118 | ||
b6887d79 | 119 | struct ftrace_probe_ops { |
59df055f SR |
120 | void (*func)(unsigned long ip, |
121 | unsigned long parent_ip, | |
122 | void **data); | |
123 | int (*callback)(unsigned long ip, void **data); | |
124 | void (*free)(void **data); | |
809dcf29 SR |
125 | int (*print)(struct seq_file *m, |
126 | unsigned long ip, | |
b6887d79 | 127 | struct ftrace_probe_ops *ops, |
809dcf29 | 128 | void *data); |
59df055f SR |
129 | }; |
130 | ||
131 | extern int | |
b6887d79 | 132 | register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops, |
59df055f SR |
133 | void *data); |
134 | extern void | |
b6887d79 | 135 | unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops, |
59df055f SR |
136 | void *data); |
137 | extern void | |
b6887d79 SR |
138 | unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops); |
139 | extern void unregister_ftrace_function_probe_all(char *glob); | |
59df055f | 140 | |
2cfa1978 MH |
141 | extern int ftrace_text_reserved(void *start, void *end); |
142 | ||
3c1720f0 | 143 | enum { |
37ad5084 SR |
144 | FTRACE_FL_FREE = (1 << 0), |
145 | FTRACE_FL_FAILED = (1 << 1), | |
146 | FTRACE_FL_FILTER = (1 << 2), | |
147 | FTRACE_FL_ENABLED = (1 << 3), | |
41c52c0d | 148 | FTRACE_FL_NOTRACE = (1 << 4), |
0eb96701 | 149 | FTRACE_FL_CONVERTED = (1 << 5), |
3c1720f0 SR |
150 | }; |
151 | ||
3d083395 | 152 | struct dyn_ftrace { |
ee000b7f LJ |
153 | union { |
154 | unsigned long ip; /* address of mcount call-site */ | |
155 | struct dyn_ftrace *freelist; | |
156 | }; | |
157 | union { | |
158 | unsigned long flags; | |
159 | struct dyn_ftrace *newlist; | |
160 | }; | |
161 | struct dyn_arch_ftrace arch; | |
3d083395 SR |
162 | }; |
163 | ||
e1c08bdd | 164 | int ftrace_force_update(void); |
77a2b37d | 165 | void ftrace_set_filter(unsigned char *buf, int len, int reset); |
e1c08bdd | 166 | |
f6180773 SR |
167 | int register_ftrace_command(struct ftrace_func_command *cmd); |
168 | int unregister_ftrace_command(struct ftrace_func_command *cmd); | |
169 | ||
3d083395 | 170 | /* defined in arch */ |
3c1720f0 | 171 | extern int ftrace_ip_converted(unsigned long ip); |
d61f82d0 | 172 | extern int ftrace_dyn_arch_init(void *data); |
d61f82d0 SR |
173 | extern int ftrace_update_ftrace_func(ftrace_func_t func); |
174 | extern void ftrace_caller(void); | |
175 | extern void ftrace_call(void); | |
176 | extern void mcount_call(void); | |
f0001207 SL |
177 | |
178 | #ifndef FTRACE_ADDR | |
179 | #define FTRACE_ADDR ((unsigned long)ftrace_caller) | |
180 | #endif | |
fb52607a FW |
181 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
182 | extern void ftrace_graph_caller(void); | |
5a45cfe1 SR |
183 | extern int ftrace_enable_ftrace_graph_caller(void); |
184 | extern int ftrace_disable_ftrace_graph_caller(void); | |
185 | #else | |
186 | static inline int ftrace_enable_ftrace_graph_caller(void) { return 0; } | |
187 | static inline int ftrace_disable_ftrace_graph_caller(void) { return 0; } | |
e7d3737e | 188 | #endif |
ad90c0e3 | 189 | |
31e88909 | 190 | /** |
57794a9d | 191 | * ftrace_make_nop - convert code into nop |
31e88909 SR |
192 | * @mod: module structure if called by module load initialization |
193 | * @rec: the mcount call site record | |
194 | * @addr: the address that the call site should be calling | |
195 | * | |
196 | * This is a very sensitive operation and great care needs | |
197 | * to be taken by the arch. The operation should carefully | |
198 | * read the location, check to see if what is read is indeed | |
199 | * what we expect it to be, and then on success of the compare, | |
200 | * it should write to the location. | |
201 | * | |
202 | * The code segment at @rec->ip should be a caller to @addr | |
203 | * | |
204 | * Return must be: | |
205 | * 0 on success | |
206 | * -EFAULT on error reading the location | |
207 | * -EINVAL on a failed compare of the contents | |
208 | * -EPERM on error writing to the location | |
209 | * Any other value will be considered a failure. | |
210 | */ | |
211 | extern int ftrace_make_nop(struct module *mod, | |
212 | struct dyn_ftrace *rec, unsigned long addr); | |
a26a2a27 | 213 | |
593eb8a2 | 214 | /** |
31e88909 SR |
215 | * ftrace_make_call - convert a nop call site into a call to addr |
216 | * @rec: the mcount call site record | |
217 | * @addr: the address that the call site should call | |
593eb8a2 SR |
218 | * |
219 | * This is a very sensitive operation and great care needs | |
220 | * to be taken by the arch. The operation should carefully | |
221 | * read the location, check to see if what is read is indeed | |
222 | * what we expect it to be, and then on success of the compare, | |
223 | * it should write to the location. | |
224 | * | |
31e88909 SR |
225 | * The code segment at @rec->ip should be a nop |
226 | * | |
593eb8a2 SR |
227 | * Return must be: |
228 | * 0 on success | |
229 | * -EFAULT on error reading the location | |
230 | * -EINVAL on a failed compare of the contents | |
231 | * -EPERM on error writing to the location | |
232 | * Any other value will be considered a failure. | |
233 | */ | |
31e88909 SR |
234 | extern int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr); |
235 | ||
31e88909 SR |
236 | /* May be defined in arch */ |
237 | extern int ftrace_arch_read_dyn_info(char *buf, int size); | |
593eb8a2 | 238 | |
ecea656d AS |
239 | extern int skip_trace(unsigned long ip); |
240 | ||
c0719e5a SR |
241 | extern void ftrace_disable_daemon(void); |
242 | extern void ftrace_enable_daemon(void); | |
e1c08bdd | 243 | #else |
4dbf6bc2 SR |
244 | static inline int skip_trace(unsigned long ip) { return 0; } |
245 | static inline int ftrace_force_update(void) { return 0; } | |
246 | static inline void ftrace_set_filter(unsigned char *buf, int len, int reset) | |
247 | { | |
248 | } | |
249 | static inline void ftrace_disable_daemon(void) { } | |
250 | static inline void ftrace_enable_daemon(void) { } | |
e7247a15 | 251 | static inline void ftrace_release_mod(struct module *mod) {} |
f6180773 SR |
252 | static inline int register_ftrace_command(struct ftrace_func_command *cmd) |
253 | { | |
97d0bb8d | 254 | return -EINVAL; |
f6180773 SR |
255 | } |
256 | static inline int unregister_ftrace_command(char *cmd_name) | |
257 | { | |
97d0bb8d | 258 | return -EINVAL; |
f6180773 | 259 | } |
2cfa1978 MH |
260 | static inline int ftrace_text_reserved(void *start, void *end) |
261 | { | |
262 | return 0; | |
263 | } | |
ecea656d | 264 | #endif /* CONFIG_DYNAMIC_FTRACE */ |
352ad25a | 265 | |
aeaee8a2 IM |
266 | /* totally disable ftrace - can not re-enable after this */ |
267 | void ftrace_kill(void); | |
268 | ||
f43fdad8 IM |
269 | static inline void tracer_disable(void) |
270 | { | |
606576ce | 271 | #ifdef CONFIG_FUNCTION_TRACER |
f43fdad8 IM |
272 | ftrace_enabled = 0; |
273 | #endif | |
274 | } | |
275 | ||
37002735 HY |
276 | /* |
277 | * Ftrace disable/restore without lock. Some synchronization mechanism | |
9bdeb7b5 | 278 | * must be used to prevent ftrace_enabled to be changed between |
37002735 HY |
279 | * disable/restore. |
280 | */ | |
9bdeb7b5 HY |
281 | static inline int __ftrace_enabled_save(void) |
282 | { | |
606576ce | 283 | #ifdef CONFIG_FUNCTION_TRACER |
9bdeb7b5 HY |
284 | int saved_ftrace_enabled = ftrace_enabled; |
285 | ftrace_enabled = 0; | |
286 | return saved_ftrace_enabled; | |
287 | #else | |
288 | return 0; | |
289 | #endif | |
290 | } | |
291 | ||
292 | static inline void __ftrace_enabled_restore(int enabled) | |
293 | { | |
606576ce | 294 | #ifdef CONFIG_FUNCTION_TRACER |
9bdeb7b5 HY |
295 | ftrace_enabled = enabled; |
296 | #endif | |
297 | } | |
298 | ||
c79a61f5 UKK |
299 | #ifndef HAVE_ARCH_CALLER_ADDR |
300 | # ifdef CONFIG_FRAME_POINTER | |
301 | # define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) | |
302 | # define CALLER_ADDR1 ((unsigned long)__builtin_return_address(1)) | |
303 | # define CALLER_ADDR2 ((unsigned long)__builtin_return_address(2)) | |
304 | # define CALLER_ADDR3 ((unsigned long)__builtin_return_address(3)) | |
305 | # define CALLER_ADDR4 ((unsigned long)__builtin_return_address(4)) | |
306 | # define CALLER_ADDR5 ((unsigned long)__builtin_return_address(5)) | |
307 | # define CALLER_ADDR6 ((unsigned long)__builtin_return_address(6)) | |
308 | # else | |
309 | # define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) | |
310 | # define CALLER_ADDR1 0UL | |
311 | # define CALLER_ADDR2 0UL | |
312 | # define CALLER_ADDR3 0UL | |
313 | # define CALLER_ADDR4 0UL | |
314 | # define CALLER_ADDR5 0UL | |
315 | # define CALLER_ADDR6 0UL | |
316 | # endif | |
317 | #endif /* ifndef HAVE_ARCH_CALLER_ADDR */ | |
352ad25a | 318 | |
81d68a96 | 319 | #ifdef CONFIG_IRQSOFF_TRACER |
489f1396 IM |
320 | extern void time_hardirqs_on(unsigned long a0, unsigned long a1); |
321 | extern void time_hardirqs_off(unsigned long a0, unsigned long a1); | |
81d68a96 | 322 | #else |
4dbf6bc2 SR |
323 | static inline void time_hardirqs_on(unsigned long a0, unsigned long a1) { } |
324 | static inline void time_hardirqs_off(unsigned long a0, unsigned long a1) { } | |
81d68a96 SR |
325 | #endif |
326 | ||
6cd8a4bb | 327 | #ifdef CONFIG_PREEMPT_TRACER |
489f1396 IM |
328 | extern void trace_preempt_on(unsigned long a0, unsigned long a1); |
329 | extern void trace_preempt_off(unsigned long a0, unsigned long a1); | |
6cd8a4bb | 330 | #else |
4dbf6bc2 SR |
331 | static inline void trace_preempt_on(unsigned long a0, unsigned long a1) { } |
332 | static inline void trace_preempt_off(unsigned long a0, unsigned long a1) { } | |
6cd8a4bb SR |
333 | #endif |
334 | ||
68bf21aa SR |
335 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
336 | extern void ftrace_init(void); | |
337 | #else | |
338 | static inline void ftrace_init(void) { } | |
339 | #endif | |
340 | ||
287b6e68 FW |
341 | /* |
342 | * Structure that defines an entry function trace. | |
343 | */ | |
344 | struct ftrace_graph_ent { | |
345 | unsigned long func; /* Current function */ | |
346 | int depth; | |
347 | }; | |
dd0e545f | 348 | |
caf4b323 FW |
349 | /* |
350 | * Structure that defines a return function trace. | |
351 | */ | |
fb52607a | 352 | struct ftrace_graph_ret { |
caf4b323 FW |
353 | unsigned long func; /* Current function */ |
354 | unsigned long long calltime; | |
355 | unsigned long long rettime; | |
0231022c FW |
356 | /* Number of functions that overran the depth limit for current task */ |
357 | unsigned long overrun; | |
287b6e68 | 358 | int depth; |
caf4b323 FW |
359 | }; |
360 | ||
62b915f1 JO |
361 | /* Type of the callback handlers for tracing function graph*/ |
362 | typedef void (*trace_func_graph_ret_t)(struct ftrace_graph_ret *); /* return */ | |
363 | typedef int (*trace_func_graph_ent_t)(struct ftrace_graph_ent *); /* entry */ | |
364 | ||
fb52607a | 365 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
8b96f011 | 366 | |
5ac9f622 | 367 | /* for init task */ |
f876d346 | 368 | #define INIT_FTRACE_GRAPH .ret_stack = NULL, |
5ac9f622 | 369 | |
712406a6 SR |
370 | /* |
371 | * Stack of return addresses for functions | |
372 | * of a thread. | |
373 | * Used in struct thread_info | |
374 | */ | |
375 | struct ftrace_ret_stack { | |
376 | unsigned long ret; | |
377 | unsigned long func; | |
378 | unsigned long long calltime; | |
a2a16d6a | 379 | unsigned long long subtime; |
71e308a2 | 380 | unsigned long fp; |
712406a6 SR |
381 | }; |
382 | ||
383 | /* | |
384 | * Primary handler of a function return. | |
385 | * It relays on ftrace_return_to_handler. | |
386 | * Defined in entry_32/64.S | |
387 | */ | |
388 | extern void return_to_handler(void); | |
389 | ||
390 | extern int | |
71e308a2 SR |
391 | ftrace_push_return_trace(unsigned long ret, unsigned long func, int *depth, |
392 | unsigned long frame_pointer); | |
712406a6 | 393 | |
8b96f011 FW |
394 | /* |
395 | * Sometimes we don't want to trace a function with the function | |
396 | * graph tracer but we want them to keep traced by the usual function | |
397 | * tracer if the function graph tracer is not configured. | |
398 | */ | |
399 | #define __notrace_funcgraph notrace | |
400 | ||
bcbc4f20 FW |
401 | /* |
402 | * We want to which function is an entrypoint of a hardirq. | |
403 | * That will help us to put a signal on output. | |
404 | */ | |
405 | #define __irq_entry __attribute__((__section__(".irqentry.text"))) | |
406 | ||
407 | /* Limits of hardirq entrypoints */ | |
408 | extern char __irqentry_text_start[]; | |
409 | extern char __irqentry_text_end[]; | |
410 | ||
f201ae23 FW |
411 | #define FTRACE_RETFUNC_DEPTH 50 |
412 | #define FTRACE_RETSTACK_ALLOC_SIZE 32 | |
287b6e68 FW |
413 | extern int register_ftrace_graph(trace_func_graph_ret_t retfunc, |
414 | trace_func_graph_ent_t entryfunc); | |
415 | ||
14a866c5 SR |
416 | extern void ftrace_graph_stop(void); |
417 | ||
287b6e68 FW |
418 | /* The current handlers in use */ |
419 | extern trace_func_graph_ret_t ftrace_graph_return; | |
420 | extern trace_func_graph_ent_t ftrace_graph_entry; | |
caf4b323 | 421 | |
fb52607a | 422 | extern void unregister_ftrace_graph(void); |
f201ae23 | 423 | |
fb52607a FW |
424 | extern void ftrace_graph_init_task(struct task_struct *t); |
425 | extern void ftrace_graph_exit_task(struct task_struct *t); | |
21a8c466 FW |
426 | |
427 | static inline int task_curr_ret_stack(struct task_struct *t) | |
428 | { | |
429 | return t->curr_ret_stack; | |
430 | } | |
380c4b14 FW |
431 | |
432 | static inline void pause_graph_tracing(void) | |
433 | { | |
434 | atomic_inc(¤t->tracing_graph_pause); | |
435 | } | |
436 | ||
437 | static inline void unpause_graph_tracing(void) | |
438 | { | |
439 | atomic_dec(¤t->tracing_graph_pause); | |
440 | } | |
5ac9f622 | 441 | #else /* !CONFIG_FUNCTION_GRAPH_TRACER */ |
8b96f011 FW |
442 | |
443 | #define __notrace_funcgraph | |
bcbc4f20 | 444 | #define __irq_entry |
5ac9f622 | 445 | #define INIT_FTRACE_GRAPH |
8b96f011 | 446 | |
fb52607a FW |
447 | static inline void ftrace_graph_init_task(struct task_struct *t) { } |
448 | static inline void ftrace_graph_exit_task(struct task_struct *t) { } | |
21a8c466 | 449 | |
62b915f1 JO |
450 | static inline int register_ftrace_graph(trace_func_graph_ret_t retfunc, |
451 | trace_func_graph_ent_t entryfunc) | |
452 | { | |
453 | return -1; | |
454 | } | |
455 | static inline void unregister_ftrace_graph(void) { } | |
456 | ||
21a8c466 FW |
457 | static inline int task_curr_ret_stack(struct task_struct *tsk) |
458 | { | |
459 | return -1; | |
460 | } | |
380c4b14 FW |
461 | |
462 | static inline void pause_graph_tracing(void) { } | |
463 | static inline void unpause_graph_tracing(void) { } | |
5ac9f622 | 464 | #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ |
caf4b323 | 465 | |
ea4e2bc4 | 466 | #ifdef CONFIG_TRACING |
ea4e2bc4 SR |
467 | |
468 | /* flags for current->trace */ | |
469 | enum { | |
470 | TSK_TRACE_FL_TRACE_BIT = 0, | |
471 | TSK_TRACE_FL_GRAPH_BIT = 1, | |
472 | }; | |
473 | enum { | |
474 | TSK_TRACE_FL_TRACE = 1 << TSK_TRACE_FL_TRACE_BIT, | |
475 | TSK_TRACE_FL_GRAPH = 1 << TSK_TRACE_FL_GRAPH_BIT, | |
476 | }; | |
477 | ||
478 | static inline void set_tsk_trace_trace(struct task_struct *tsk) | |
479 | { | |
480 | set_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace); | |
481 | } | |
482 | ||
483 | static inline void clear_tsk_trace_trace(struct task_struct *tsk) | |
484 | { | |
485 | clear_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace); | |
486 | } | |
487 | ||
488 | static inline int test_tsk_trace_trace(struct task_struct *tsk) | |
489 | { | |
490 | return tsk->trace & TSK_TRACE_FL_TRACE; | |
491 | } | |
492 | ||
493 | static inline void set_tsk_trace_graph(struct task_struct *tsk) | |
494 | { | |
495 | set_bit(TSK_TRACE_FL_GRAPH_BIT, &tsk->trace); | |
496 | } | |
497 | ||
498 | static inline void clear_tsk_trace_graph(struct task_struct *tsk) | |
499 | { | |
500 | clear_bit(TSK_TRACE_FL_GRAPH_BIT, &tsk->trace); | |
501 | } | |
502 | ||
503 | static inline int test_tsk_trace_graph(struct task_struct *tsk) | |
504 | { | |
505 | return tsk->trace & TSK_TRACE_FL_GRAPH; | |
506 | } | |
507 | ||
cecbca96 FW |
508 | enum ftrace_dump_mode; |
509 | ||
510 | extern enum ftrace_dump_mode ftrace_dump_on_oops; | |
526211bc | 511 | |
261842b7 SR |
512 | #ifdef CONFIG_PREEMPT |
513 | #define INIT_TRACE_RECURSION .trace_recursion = 0, | |
514 | #endif | |
515 | ||
ea4e2bc4 SR |
516 | #endif /* CONFIG_TRACING */ |
517 | ||
261842b7 SR |
518 | #ifndef INIT_TRACE_RECURSION |
519 | #define INIT_TRACE_RECURSION | |
520 | #endif | |
b1818748 | 521 | |
e7b8e675 MF |
522 | #ifdef CONFIG_FTRACE_SYSCALLS |
523 | ||
524 | unsigned long arch_syscall_addr(int nr); | |
525 | ||
526 | #endif /* CONFIG_FTRACE_SYSCALLS */ | |
527 | ||
16444a8a | 528 | #endif /* _LINUX_FTRACE_H */ |