Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
bac5fb97 | 2 | |
645df987 SRRH |
3 | #ifndef _LINUX_TRACE_EVENT_H |
4 | #define _LINUX_TRACE_EVENT_H | |
97f20251 | 5 | |
97f20251 | 6 | #include <linux/ring_buffer.h> |
16bb8eb1 | 7 | #include <linux/trace_seq.h> |
be74b73a | 8 | #include <linux/percpu.h> |
20ab4425 | 9 | #include <linux/hardirq.h> |
430ad5a6 | 10 | #include <linux/perf_event.h> |
de7b2973 | 11 | #include <linux/tracepoint.h> |
97f20251 SR |
12 | |
13 | struct trace_array; | |
1c5eb448 | 14 | struct array_buffer; |
97f20251 | 15 | struct tracer; |
6d723736 | 16 | struct dentry; |
2541517c | 17 | struct bpf_prog; |
0dcac272 | 18 | union bpf_attr; |
97f20251 | 19 | |
645df987 SRRH |
20 | const char *trace_print_flags_seq(struct trace_seq *p, const char *delim, |
21 | unsigned long flags, | |
22 | const struct trace_print_flags *flag_array); | |
be74b73a | 23 | |
645df987 SRRH |
24 | const char *trace_print_symbols_seq(struct trace_seq *p, unsigned long val, |
25 | const struct trace_print_flags *symbol_array); | |
0f4fc29d | 26 | |
2fc1b6f0 | 27 | #if BITS_PER_LONG == 32 |
d3213e8f RZ |
28 | const char *trace_print_flags_seq_u64(struct trace_seq *p, const char *delim, |
29 | unsigned long long flags, | |
30 | const struct trace_print_flags_u64 *flag_array); | |
31 | ||
645df987 SRRH |
32 | const char *trace_print_symbols_seq_u64(struct trace_seq *p, |
33 | unsigned long long val, | |
34 | const struct trace_print_flags_u64 | |
2fc1b6f0 | 35 | *symbol_array); |
36 | #endif | |
37 | ||
645df987 SRRH |
38 | const char *trace_print_bitmask_seq(struct trace_seq *p, void *bitmask_ptr, |
39 | unsigned int bitmask_size); | |
4449bf92 | 40 | |
645df987 | 41 | const char *trace_print_hex_seq(struct trace_seq *p, |
2acae0d5 | 42 | const unsigned char *buf, int len, |
3898fac1 | 43 | bool concatenate); |
5a2e3995 | 44 | |
645df987 | 45 | const char *trace_print_array_seq(struct trace_seq *p, |
ac01ce14 | 46 | const void *buf, int count, |
6ea22486 DM |
47 | size_t el_size); |
48 | ||
ef56e047 PM |
49 | const char * |
50 | trace_print_hex_dump_seq(struct trace_seq *p, const char *prefix_str, | |
51 | int prefix_type, int rowsize, int groupsize, | |
52 | const void *buf, size_t len, bool ascii); | |
53 | ||
f71130de LZ |
54 | struct trace_iterator; |
55 | struct trace_event; | |
56 | ||
892c505a SRRH |
57 | int trace_raw_output_prep(struct trace_iterator *iter, |
58 | struct trace_event *event); | |
efbbdaa2 MH |
59 | extern __printf(2, 3) |
60 | void trace_event_printf(struct trace_iterator *iter, const char *fmt, ...); | |
f71130de | 61 | |
ddeea494 SS |
62 | /* Used to find the offset and length of dynamic fields in trace events */ |
63 | struct trace_dynamic_info { | |
64 | #ifdef CONFIG_CPU_BIG_ENDIAN | |
ddeea494 | 65 | u16 len; |
fc52a644 | 66 | u16 offset; |
ddeea494 | 67 | #else |
ddeea494 | 68 | u16 offset; |
fc52a644 | 69 | u16 len; |
ddeea494 | 70 | #endif |
fc52a644 | 71 | } __packed; |
ddeea494 | 72 | |
97f20251 SR |
73 | /* |
74 | * The trace entry - the most basic unit of tracing. This is what | |
75 | * is printed in the end as a single line in the trace output, such as: | |
76 | * | |
77 | * bash-15816 [01] 235.197585: idle_cpu <- irq_enter | |
78 | */ | |
79 | struct trace_entry { | |
89ec0dee | 80 | unsigned short type; |
97f20251 SR |
81 | unsigned char flags; |
82 | unsigned char preempt_count; | |
83 | int pid; | |
97f20251 SR |
84 | }; |
85 | ||
609a7404 | 86 | #define TRACE_EVENT_TYPE_MAX \ |
89ec0dee SR |
87 | ((1 << (sizeof(((struct trace_entry *)0)->type) * 8)) - 1) |
88 | ||
97f20251 SR |
89 | /* |
90 | * Trace iterator - used by printout routines who present trace | |
91 | * results to users and which routines might sleep, etc: | |
92 | */ | |
93 | struct trace_iterator { | |
94 | struct trace_array *tr; | |
95 | struct tracer *trace; | |
1c5eb448 | 96 | struct array_buffer *array_buffer; |
97f20251 SR |
97 | void *private; |
98 | int cpu_file; | |
99 | struct mutex mutex; | |
6d158a81 | 100 | struct ring_buffer_iter **buffer_iter; |
112f38a7 | 101 | unsigned long iter_flags; |
ff895103 SRV |
102 | void *temp; /* temp holder */ |
103 | unsigned int temp_size; | |
efbbdaa2 MH |
104 | char *fmt; /* modified format holder */ |
105 | unsigned int fmt_size; | |
f3ddb74a | 106 | long wait_index; |
97f20251 | 107 | |
bc289ae9 LJ |
108 | /* trace_seq for __print_flags() and __print_symbolic() etc. */ |
109 | struct trace_seq tmp_seq; | |
110 | ||
ed5467da AV |
111 | cpumask_var_t started; |
112 | ||
113 | /* it's true when current open file is snapshot */ | |
114 | bool snapshot; | |
115 | ||
97f20251 SR |
116 | /* The below is zeroed out in pipe_read */ |
117 | struct trace_seq seq; | |
118 | struct trace_entry *ent; | |
bc21b478 | 119 | unsigned long lost_events; |
a63ce5b3 | 120 | int leftover; |
4a9bd3f1 | 121 | int ent_size; |
97f20251 SR |
122 | int cpu; |
123 | u64 ts; | |
124 | ||
97f20251 SR |
125 | loff_t pos; |
126 | long idx; | |
127 | ||
ed5467da | 128 | /* All new field here will be zeroed out in pipe_read */ |
97f20251 SR |
129 | }; |
130 | ||
8be0709f DS |
131 | enum trace_iter_flags { |
132 | TRACE_FILE_LAT_FMT = 1, | |
133 | TRACE_FILE_ANNOTATE = 2, | |
134 | TRACE_FILE_TIME_IN_NS = 4, | |
135 | }; | |
136 | ||
97f20251 SR |
137 | |
138 | typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter, | |
a9a57763 SR |
139 | int flags, struct trace_event *event); |
140 | ||
141 | struct trace_event_functions { | |
97f20251 SR |
142 | trace_print_func trace; |
143 | trace_print_func raw; | |
144 | trace_print_func hex; | |
145 | trace_print_func binary; | |
146 | }; | |
147 | ||
a9a57763 SR |
148 | struct trace_event { |
149 | struct hlist_node node; | |
a9a57763 SR |
150 | int type; |
151 | struct trace_event_functions *funcs; | |
152 | }; | |
153 | ||
9023c930 SRRH |
154 | extern int register_trace_event(struct trace_event *event); |
155 | extern int unregister_trace_event(struct trace_event *event); | |
97f20251 SR |
156 | |
157 | /* Return values for print_line callback */ | |
158 | enum print_line_t { | |
159 | TRACE_TYPE_PARTIAL_LINE = 0, /* Retry after flushing the seq */ | |
160 | TRACE_TYPE_HANDLED = 1, | |
161 | TRACE_TYPE_UNHANDLED = 2, /* Relay to other output functions */ | |
162 | TRACE_TYPE_NO_CONSUME = 3 /* Handled but ask to not consume */ | |
163 | }; | |
164 | ||
af0009fc | 165 | enum print_line_t trace_handle_return(struct trace_seq *s); |
19a7fe20 | 166 | |
36590c50 SAS |
167 | static inline void tracing_generic_entry_update(struct trace_entry *entry, |
168 | unsigned short type, | |
169 | unsigned int trace_ctx) | |
170 | { | |
36590c50 | 171 | entry->preempt_count = trace_ctx & 0xff; |
58177084 | 172 | entry->pid = current->pid; |
36590c50 SAS |
173 | entry->type = type; |
174 | entry->flags = trace_ctx >> 16; | |
175 | } | |
176 | ||
0c02006e SAS |
177 | unsigned int tracing_gen_ctx_irq_test(unsigned int irqs_status); |
178 | ||
179 | enum trace_flag_type { | |
180 | TRACE_FLAG_IRQS_OFF = 0x01, | |
181 | TRACE_FLAG_IRQS_NOSUPPORT = 0x02, | |
182 | TRACE_FLAG_NEED_RESCHED = 0x04, | |
183 | TRACE_FLAG_HARDIRQ = 0x08, | |
184 | TRACE_FLAG_SOFTIRQ = 0x10, | |
185 | TRACE_FLAG_PREEMPT_RESCHED = 0x20, | |
186 | TRACE_FLAG_NMI = 0x40, | |
289e7b0f | 187 | TRACE_FLAG_BH_OFF = 0x80, |
0c02006e SAS |
188 | }; |
189 | ||
190 | #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT | |
191 | static inline unsigned int tracing_gen_ctx_flags(unsigned long irqflags) | |
192 | { | |
193 | unsigned int irq_status = irqs_disabled_flags(irqflags) ? | |
194 | TRACE_FLAG_IRQS_OFF : 0; | |
195 | return tracing_gen_ctx_irq_test(irq_status); | |
196 | } | |
197 | static inline unsigned int tracing_gen_ctx(void) | |
198 | { | |
199 | unsigned long irqflags; | |
200 | ||
201 | local_save_flags(irqflags); | |
202 | return tracing_gen_ctx_flags(irqflags); | |
203 | } | |
204 | #else | |
205 | ||
206 | static inline unsigned int tracing_gen_ctx_flags(unsigned long irqflags) | |
207 | { | |
208 | return tracing_gen_ctx_irq_test(TRACE_FLAG_IRQS_NOSUPPORT); | |
209 | } | |
210 | static inline unsigned int tracing_gen_ctx(void) | |
211 | { | |
212 | return tracing_gen_ctx_irq_test(TRACE_FLAG_IRQS_NOSUPPORT); | |
213 | } | |
214 | #endif | |
215 | ||
216 | static inline unsigned int tracing_gen_ctx_dec(void) | |
217 | { | |
218 | unsigned int trace_ctx; | |
219 | ||
220 | trace_ctx = tracing_gen_ctx(); | |
221 | /* | |
f2cc020d | 222 | * Subtract one from the preemption counter if preemption is enabled, |
0c02006e SAS |
223 | * see trace_event_buffer_reserve()for details. |
224 | */ | |
225 | if (IS_ENABLED(CONFIG_PREEMPTION)) | |
226 | trace_ctx--; | |
227 | return trace_ctx; | |
228 | } | |
36590c50 | 229 | |
7f1d2f82 | 230 | struct trace_event_file; |
ccb469a1 SR |
231 | |
232 | struct ring_buffer_event * | |
13292494 | 233 | trace_event_buffer_lock_reserve(struct trace_buffer **current_buffer, |
7f1d2f82 | 234 | struct trace_event_file *trace_file, |
ccb469a1 | 235 | int type, unsigned long len, |
36590c50 | 236 | unsigned int trace_ctx); |
97f20251 | 237 | |
d914ba37 JF |
238 | #define TRACE_RECORD_CMDLINE BIT(0) |
239 | #define TRACE_RECORD_TGID BIT(1) | |
240 | ||
241 | void tracing_record_taskinfo(struct task_struct *task, int flags); | |
242 | void tracing_record_taskinfo_sched_switch(struct task_struct *prev, | |
243 | struct task_struct *next, int flags); | |
244 | ||
245 | void tracing_record_cmdline(struct task_struct *task); | |
246 | void tracing_record_tgid(struct task_struct *task); | |
97f20251 | 247 | |
bfd5a5e8 DH |
248 | int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...) |
249 | __printf(3, 4); | |
1d6bae96 | 250 | |
1f9963cb LZ |
251 | struct event_filter; |
252 | ||
2239291a SR |
253 | enum trace_reg { |
254 | TRACE_REG_REGISTER, | |
255 | TRACE_REG_UNREGISTER, | |
37d73998 | 256 | #ifdef CONFIG_PERF_EVENTS |
2239291a SR |
257 | TRACE_REG_PERF_REGISTER, |
258 | TRACE_REG_PERF_UNREGISTER, | |
ceec0b6f JO |
259 | TRACE_REG_PERF_OPEN, |
260 | TRACE_REG_PERF_CLOSE, | |
466c81c4 PZ |
261 | /* |
262 | * These (ADD/DEL) use a 'boolean' return value, where 1 (true) means a | |
263 | * custom action was taken and the default action is not to be | |
264 | * performed. | |
265 | */ | |
489c75c3 JO |
266 | TRACE_REG_PERF_ADD, |
267 | TRACE_REG_PERF_DEL, | |
37d73998 | 268 | #endif |
2239291a SR |
269 | }; |
270 | ||
2425bcb9 | 271 | struct trace_event_call; |
2239291a | 272 | |
04ae87a5 PZ |
273 | #define TRACE_FUNCTION_TYPE ((const char *)~0UL) |
274 | ||
275 | struct trace_event_fields { | |
276 | const char *type; | |
277 | union { | |
278 | struct { | |
279 | const char *name; | |
280 | const int size; | |
281 | const int align; | |
282 | const int is_signed; | |
283 | const int filter_type; | |
b6c7abd1 | 284 | const int len; |
04ae87a5 PZ |
285 | }; |
286 | int (*define_fields)(struct trace_event_call *); | |
287 | }; | |
288 | }; | |
289 | ||
2425bcb9 | 290 | struct trace_event_class { |
acd388fd | 291 | const char *system; |
2239291a SR |
292 | void *probe; |
293 | #ifdef CONFIG_PERF_EVENTS | |
294 | void *perf_probe; | |
295 | #endif | |
2425bcb9 | 296 | int (*reg)(struct trace_event_call *event, |
ceec0b6f | 297 | enum trace_reg type, void *data); |
04ae87a5 | 298 | struct trace_event_fields *fields_array; |
2425bcb9 | 299 | struct list_head *(*get_fields)(struct trace_event_call *); |
2e33af02 | 300 | struct list_head fields; |
2425bcb9 | 301 | int (*raw_init)(struct trace_event_call *); |
8f082018 SR |
302 | }; |
303 | ||
2425bcb9 | 304 | extern int trace_event_reg(struct trace_event_call *event, |
ceec0b6f | 305 | enum trace_reg type, void *data); |
a1d0ce82 | 306 | |
3f795dcf | 307 | struct trace_event_buffer { |
13292494 | 308 | struct trace_buffer *buffer; |
3fd40d1e | 309 | struct ring_buffer_event *event; |
7f1d2f82 | 310 | struct trace_event_file *trace_file; |
3fd40d1e | 311 | void *entry; |
36590c50 | 312 | unsigned int trace_ctx; |
8cfcf155 | 313 | struct pt_regs *regs; |
3fd40d1e SR |
314 | }; |
315 | ||
3f795dcf | 316 | void *trace_event_buffer_reserve(struct trace_event_buffer *fbuffer, |
7f1d2f82 | 317 | struct trace_event_file *trace_file, |
3fd40d1e SR |
318 | unsigned long len); |
319 | ||
3f795dcf | 320 | void trace_event_buffer_commit(struct trace_event_buffer *fbuffer); |
3fd40d1e | 321 | |
553552ce | 322 | enum { |
553552ce | 323 | TRACE_EVENT_FL_FILTERED_BIT, |
61c32659 | 324 | TRACE_EVENT_FL_CAP_ANY_BIT, |
27b14b56 | 325 | TRACE_EVENT_FL_NO_SET_FILTER_BIT, |
9b63776f | 326 | TRACE_EVENT_FL_IGNORE_ENABLE_BIT, |
de7b2973 | 327 | TRACE_EVENT_FL_TRACEPOINT_BIT, |
8b0e6c74 | 328 | TRACE_EVENT_FL_DYNAMIC_BIT, |
72cbbc89 | 329 | TRACE_EVENT_FL_KPROBE_BIT, |
04a22fae | 330 | TRACE_EVENT_FL_UPROBE_BIT, |
7491e2c4 | 331 | TRACE_EVENT_FL_EPROBE_BIT, |
334e5519 | 332 | TRACE_EVENT_FL_FPROBE_BIT, |
3a73333f | 333 | TRACE_EVENT_FL_CUSTOM_BIT, |
553552ce SR |
334 | }; |
335 | ||
ae63b31e SR |
336 | /* |
337 | * Event flags: | |
338 | * FILTERED - The event has a filter attached | |
339 | * CAP_ANY - Any user can enable for perf | |
340 | * NO_SET_FILTER - Set when filter has error and is to be ignored | |
5d6ad960 | 341 | * IGNORE_ENABLE - For trace internal events, do not enable with debugfs file |
de7b2973 | 342 | * TRACEPOINT - Event is a tracepoint |
8b0e6c74 | 343 | * DYNAMIC - Event is a dynamic event (created at run time) |
72cbbc89 | 344 | * KPROBE - Event is a kprobe |
04a22fae | 345 | * UPROBE - Event is a uprobe |
7491e2c4 | 346 | * EPROBE - Event is an event probe |
334e5519 | 347 | * FPROBE - Event is an function probe |
3a73333f SRG |
348 | * CUSTOM - Event is a custom event (to be attached to an exsiting tracepoint) |
349 | * This is set when the custom event has not been attached | |
350 | * to a tracepoint yet, then it is cleared when it is. | |
ae63b31e | 351 | */ |
553552ce | 352 | enum { |
e870e9a1 | 353 | TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT), |
61c32659 | 354 | TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT), |
27b14b56 | 355 | TRACE_EVENT_FL_NO_SET_FILTER = (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT), |
9b63776f | 356 | TRACE_EVENT_FL_IGNORE_ENABLE = (1 << TRACE_EVENT_FL_IGNORE_ENABLE_BIT), |
de7b2973 | 357 | TRACE_EVENT_FL_TRACEPOINT = (1 << TRACE_EVENT_FL_TRACEPOINT_BIT), |
8b0e6c74 | 358 | TRACE_EVENT_FL_DYNAMIC = (1 << TRACE_EVENT_FL_DYNAMIC_BIT), |
72cbbc89 | 359 | TRACE_EVENT_FL_KPROBE = (1 << TRACE_EVENT_FL_KPROBE_BIT), |
04a22fae | 360 | TRACE_EVENT_FL_UPROBE = (1 << TRACE_EVENT_FL_UPROBE_BIT), |
7491e2c4 | 361 | TRACE_EVENT_FL_EPROBE = (1 << TRACE_EVENT_FL_EPROBE_BIT), |
334e5519 | 362 | TRACE_EVENT_FL_FPROBE = (1 << TRACE_EVENT_FL_FPROBE_BIT), |
3a73333f | 363 | TRACE_EVENT_FL_CUSTOM = (1 << TRACE_EVENT_FL_CUSTOM_BIT), |
553552ce SR |
364 | }; |
365 | ||
04a22fae WN |
366 | #define TRACE_EVENT_FL_UKPROBE (TRACE_EVENT_FL_KPROBE | TRACE_EVENT_FL_UPROBE) |
367 | ||
2425bcb9 | 368 | struct trace_event_call { |
a59fd602 | 369 | struct list_head list; |
2425bcb9 | 370 | struct trace_event_class *class; |
de7b2973 MD |
371 | union { |
372 | char *name; | |
373 | /* Set TRACE_EVENT_FL_TRACEPOINT flag when using "tp" */ | |
374 | struct tracepoint *tp; | |
375 | }; | |
80decc70 | 376 | struct trace_event event; |
0c564a53 | 377 | char *print_fmt; |
1f9963cb | 378 | struct event_filter *filter; |
1d18538e SRV |
379 | /* |
380 | * Static events can disappear with modules, | |
381 | * where as dynamic ones need their own ref count. | |
382 | */ | |
383 | union { | |
384 | void *module; | |
385 | atomic_t refcnt; | |
386 | }; | |
69fd4f0e | 387 | void *data; |
f9f34447 SRV |
388 | |
389 | /* See the TRACE_EVENT_FL_* flags above */ | |
ae63b31e SR |
390 | int flags; /* static flags of different events */ |
391 | ||
392 | #ifdef CONFIG_PERF_EVENTS | |
393 | int perf_refcount; | |
394 | struct hlist_head __percpu *perf_events; | |
e87c6bc3 | 395 | struct bpf_prog_array __rcu *prog_array; |
d5b5f391 | 396 | |
2425bcb9 | 397 | int (*perf_perm)(struct trace_event_call *, |
d5b5f391 | 398 | struct perf_event *); |
ae63b31e SR |
399 | #endif |
400 | }; | |
401 | ||
1d18538e SRV |
402 | #ifdef CONFIG_DYNAMIC_EVENTS |
403 | bool trace_event_dyn_try_get_ref(struct trace_event_call *call); | |
404 | void trace_event_dyn_put_ref(struct trace_event_call *call); | |
405 | bool trace_event_dyn_busy(struct trace_event_call *call); | |
406 | #else | |
407 | static inline bool trace_event_dyn_try_get_ref(struct trace_event_call *call) | |
408 | { | |
409 | /* Without DYNAMIC_EVENTS configured, nothing should be calling this */ | |
410 | return false; | |
411 | } | |
412 | static inline void trace_event_dyn_put_ref(struct trace_event_call *call) | |
413 | { | |
414 | } | |
415 | static inline bool trace_event_dyn_busy(struct trace_event_call *call) | |
416 | { | |
417 | /* Nothing should call this without DYNAIMIC_EVENTS configured. */ | |
418 | return true; | |
419 | } | |
420 | #endif | |
421 | ||
422 | static inline bool trace_event_try_get_ref(struct trace_event_call *call) | |
423 | { | |
424 | if (call->flags & TRACE_EVENT_FL_DYNAMIC) | |
425 | return trace_event_dyn_try_get_ref(call); | |
426 | else | |
427 | return try_module_get(call->module); | |
428 | } | |
429 | ||
430 | static inline void trace_event_put_ref(struct trace_event_call *call) | |
431 | { | |
432 | if (call->flags & TRACE_EVENT_FL_DYNAMIC) | |
433 | trace_event_dyn_put_ref(call); | |
434 | else | |
435 | module_put(call->module); | |
436 | } | |
437 | ||
e87c6bc3 YS |
438 | #ifdef CONFIG_PERF_EVENTS |
439 | static inline bool bpf_prog_array_valid(struct trace_event_call *call) | |
440 | { | |
441 | /* | |
442 | * This inline function checks whether call->prog_array | |
443 | * is valid or not. The function is called in various places, | |
444 | * outside rcu_read_lock/unlock, as a heuristic to speed up execution. | |
445 | * | |
446 | * If this function returns true, and later call->prog_array | |
447 | * becomes false inside rcu_read_lock/unlock region, | |
448 | * we bail out then. If this function return false, | |
449 | * there is a risk that we might miss a few events if the checking | |
450 | * were delayed until inside rcu_read_lock/unlock region and | |
451 | * call->prog_array happened to become non-NULL then. | |
452 | * | |
453 | * Here, READ_ONCE() is used instead of rcu_access_pointer(). | |
454 | * rcu_access_pointer() requires the actual definition of | |
455 | * "struct bpf_prog_array" while READ_ONCE() only needs | |
456 | * a declaration of the same type. | |
457 | */ | |
458 | return !!READ_ONCE(call->prog_array); | |
459 | } | |
460 | #endif | |
461 | ||
de7b2973 | 462 | static inline const char * |
687fcc4a | 463 | trace_event_name(struct trace_event_call *call) |
de7b2973 | 464 | { |
3a73333f SRG |
465 | if (call->flags & TRACE_EVENT_FL_CUSTOM) |
466 | return call->name; | |
467 | else if (call->flags & TRACE_EVENT_FL_TRACEPOINT) | |
de7b2973 MD |
468 | return call->tp ? call->tp->name : NULL; |
469 | else | |
470 | return call->name; | |
471 | } | |
472 | ||
0aeb1def CW |
473 | static inline struct list_head * |
474 | trace_get_fields(struct trace_event_call *event_call) | |
475 | { | |
476 | if (!event_call->class->get_fields) | |
477 | return &event_call->class->fields; | |
478 | return event_call->class->get_fields(event_call); | |
479 | } | |
480 | ||
7967b3e0 | 481 | struct trace_subsystem_dir; |
ae63b31e SR |
482 | |
483 | enum { | |
5d6ad960 SRRH |
484 | EVENT_FILE_FL_ENABLED_BIT, |
485 | EVENT_FILE_FL_RECORDED_CMD_BIT, | |
d914ba37 | 486 | EVENT_FILE_FL_RECORDED_TGID_BIT, |
5d6ad960 SRRH |
487 | EVENT_FILE_FL_FILTERED_BIT, |
488 | EVENT_FILE_FL_NO_SET_FILTER_BIT, | |
489 | EVENT_FILE_FL_SOFT_MODE_BIT, | |
490 | EVENT_FILE_FL_SOFT_DISABLED_BIT, | |
491 | EVENT_FILE_FL_TRIGGER_MODE_BIT, | |
492 | EVENT_FILE_FL_TRIGGER_COND_BIT, | |
3fdaf80f | 493 | EVENT_FILE_FL_PID_FILTER_BIT, |
065e63f9 | 494 | EVENT_FILE_FL_WAS_ENABLED_BIT, |
ae63b31e SR |
495 | }; |
496 | ||
e3e2a2cc TZ |
497 | extern struct trace_event_file *trace_get_event_file(const char *instance, |
498 | const char *system, | |
499 | const char *event); | |
500 | extern void trace_put_event_file(struct trace_event_file *file); | |
501 | ||
86c5426b TZ |
502 | #define MAX_DYNEVENT_CMD_LEN (2048) |
503 | ||
504 | enum dynevent_type { | |
35ca5207 | 505 | DYNEVENT_TYPE_SYNTH = 1, |
2a588dd1 | 506 | DYNEVENT_TYPE_KPROBE, |
86c5426b TZ |
507 | DYNEVENT_TYPE_NONE, |
508 | }; | |
509 | ||
510 | struct dynevent_cmd; | |
511 | ||
512 | typedef int (*dynevent_create_fn_t)(struct dynevent_cmd *cmd); | |
513 | ||
514 | struct dynevent_cmd { | |
2b90927c | 515 | struct seq_buf seq; |
86c5426b | 516 | const char *event_name; |
86c5426b TZ |
517 | unsigned int n_fields; |
518 | enum dynevent_type type; | |
519 | dynevent_create_fn_t run_command; | |
520 | void *private_data; | |
521 | }; | |
522 | ||
523 | extern int dynevent_create(struct dynevent_cmd *cmd); | |
524 | ||
f5f6b255 TZ |
525 | extern int synth_event_delete(const char *name); |
526 | ||
35ca5207 TZ |
527 | extern void synth_event_cmd_init(struct dynevent_cmd *cmd, |
528 | char *buf, int maxlen); | |
529 | ||
530 | extern int __synth_event_gen_cmd_start(struct dynevent_cmd *cmd, | |
531 | const char *name, | |
532 | struct module *mod, ...); | |
533 | ||
534 | #define synth_event_gen_cmd_start(cmd, name, mod, ...) \ | |
535 | __synth_event_gen_cmd_start(cmd, name, mod, ## __VA_ARGS__, NULL) | |
536 | ||
537 | struct synth_field_desc { | |
538 | const char *type; | |
539 | const char *name; | |
540 | }; | |
541 | ||
542 | extern int synth_event_gen_cmd_array_start(struct dynevent_cmd *cmd, | |
543 | const char *name, | |
544 | struct module *mod, | |
545 | struct synth_field_desc *fields, | |
546 | unsigned int n_fields); | |
547 | extern int synth_event_create(const char *name, | |
548 | struct synth_field_desc *fields, | |
549 | unsigned int n_fields, struct module *mod); | |
550 | ||
551 | extern int synth_event_add_field(struct dynevent_cmd *cmd, | |
552 | const char *type, | |
553 | const char *name); | |
554 | extern int synth_event_add_field_str(struct dynevent_cmd *cmd, | |
555 | const char *type_name); | |
556 | extern int synth_event_add_fields(struct dynevent_cmd *cmd, | |
557 | struct synth_field_desc *fields, | |
558 | unsigned int n_fields); | |
559 | ||
560 | #define synth_event_gen_cmd_end(cmd) \ | |
561 | dynevent_create(cmd) | |
562 | ||
8dcc53ad TZ |
563 | struct synth_event; |
564 | ||
565 | struct synth_event_trace_state { | |
566 | struct trace_event_buffer fbuffer; | |
567 | struct synth_trace_event *entry; | |
568 | struct trace_buffer *buffer; | |
569 | struct synth_event *event; | |
570 | unsigned int cur_field; | |
571 | unsigned int n_u64; | |
7276531d | 572 | bool disabled; |
8dcc53ad TZ |
573 | bool add_next; |
574 | bool add_name; | |
575 | }; | |
576 | ||
577 | extern int synth_event_trace(struct trace_event_file *file, | |
578 | unsigned int n_vals, ...); | |
579 | extern int synth_event_trace_array(struct trace_event_file *file, u64 *vals, | |
580 | unsigned int n_vals); | |
581 | extern int synth_event_trace_start(struct trace_event_file *file, | |
582 | struct synth_event_trace_state *trace_state); | |
583 | extern int synth_event_add_next_val(u64 val, | |
584 | struct synth_event_trace_state *trace_state); | |
585 | extern int synth_event_add_val(const char *field_name, u64 val, | |
586 | struct synth_event_trace_state *trace_state); | |
587 | extern int synth_event_trace_end(struct synth_event_trace_state *trace_state); | |
588 | ||
2a588dd1 TZ |
589 | extern int kprobe_event_delete(const char *name); |
590 | ||
591 | extern void kprobe_event_cmd_init(struct dynevent_cmd *cmd, | |
592 | char *buf, int maxlen); | |
593 | ||
594 | #define kprobe_event_gen_cmd_start(cmd, name, loc, ...) \ | |
595 | __kprobe_event_gen_cmd_start(cmd, false, name, loc, ## __VA_ARGS__, NULL) | |
596 | ||
597 | #define kretprobe_event_gen_cmd_start(cmd, name, loc, ...) \ | |
598 | __kprobe_event_gen_cmd_start(cmd, true, name, loc, ## __VA_ARGS__, NULL) | |
599 | ||
600 | extern int __kprobe_event_gen_cmd_start(struct dynevent_cmd *cmd, | |
601 | bool kretprobe, | |
602 | const char *name, | |
603 | const char *loc, ...); | |
604 | ||
605 | #define kprobe_event_add_fields(cmd, ...) \ | |
606 | __kprobe_event_add_fields(cmd, ## __VA_ARGS__, NULL) | |
607 | ||
608 | #define kprobe_event_add_field(cmd, field) \ | |
609 | __kprobe_event_add_fields(cmd, field, NULL) | |
610 | ||
611 | extern int __kprobe_event_add_fields(struct dynevent_cmd *cmd, ...); | |
612 | ||
613 | #define kprobe_event_gen_cmd_end(cmd) \ | |
614 | dynevent_create(cmd) | |
615 | ||
616 | #define kretprobe_event_gen_cmd_end(cmd) \ | |
617 | dynevent_create(cmd) | |
618 | ||
ae63b31e | 619 | /* |
5d6ad960 | 620 | * Event file flags: |
57d01ad0 | 621 | * ENABLED - The event is enabled |
ae63b31e | 622 | * RECORDED_CMD - The comms should be recorded at sched_switch |
d914ba37 | 623 | * RECORDED_TGID - The tgids should be recorded at sched_switch |
f306cc82 TZ |
624 | * FILTERED - The event has a filter attached |
625 | * NO_SET_FILTER - Set when filter has error and is to be ignored | |
417944c4 SRRH |
626 | * SOFT_MODE - The event is enabled/disabled by SOFT_DISABLED |
627 | * SOFT_DISABLED - When set, do not trace the event (even though its | |
628 | * tracepoint may be enabled) | |
85f2b082 | 629 | * TRIGGER_MODE - When set, invoke the triggers associated with the event |
bac5fb97 | 630 | * TRIGGER_COND - When set, one or more triggers has an associated filter |
3fdaf80f | 631 | * PID_FILTER - When set, the event is filtered based on pid |
065e63f9 | 632 | * WAS_ENABLED - Set when enabled to know to clear trace on module removal |
ae63b31e SR |
633 | */ |
634 | enum { | |
5d6ad960 SRRH |
635 | EVENT_FILE_FL_ENABLED = (1 << EVENT_FILE_FL_ENABLED_BIT), |
636 | EVENT_FILE_FL_RECORDED_CMD = (1 << EVENT_FILE_FL_RECORDED_CMD_BIT), | |
d914ba37 | 637 | EVENT_FILE_FL_RECORDED_TGID = (1 << EVENT_FILE_FL_RECORDED_TGID_BIT), |
5d6ad960 SRRH |
638 | EVENT_FILE_FL_FILTERED = (1 << EVENT_FILE_FL_FILTERED_BIT), |
639 | EVENT_FILE_FL_NO_SET_FILTER = (1 << EVENT_FILE_FL_NO_SET_FILTER_BIT), | |
640 | EVENT_FILE_FL_SOFT_MODE = (1 << EVENT_FILE_FL_SOFT_MODE_BIT), | |
641 | EVENT_FILE_FL_SOFT_DISABLED = (1 << EVENT_FILE_FL_SOFT_DISABLED_BIT), | |
642 | EVENT_FILE_FL_TRIGGER_MODE = (1 << EVENT_FILE_FL_TRIGGER_MODE_BIT), | |
643 | EVENT_FILE_FL_TRIGGER_COND = (1 << EVENT_FILE_FL_TRIGGER_COND_BIT), | |
3fdaf80f | 644 | EVENT_FILE_FL_PID_FILTER = (1 << EVENT_FILE_FL_PID_FILTER_BIT), |
065e63f9 | 645 | EVENT_FILE_FL_WAS_ENABLED = (1 << EVENT_FILE_FL_WAS_ENABLED_BIT), |
ae63b31e SR |
646 | }; |
647 | ||
7f1d2f82 | 648 | struct trace_event_file { |
ae63b31e | 649 | struct list_head list; |
2425bcb9 | 650 | struct trace_event_call *event_call; |
f86f4180 | 651 | struct event_filter __rcu *filter; |
27152bce | 652 | struct eventfs_file *ef; |
ae63b31e | 653 | struct trace_array *tr; |
7967b3e0 | 654 | struct trace_subsystem_dir *system; |
85f2b082 | 655 | struct list_head triggers; |
97f20251 | 656 | |
553552ce SR |
657 | /* |
658 | * 32 bit flags: | |
57d01ad0 SRRH |
659 | * bit 0: enabled |
660 | * bit 1: enabled cmd record | |
417944c4 SRRH |
661 | * bit 2: enable/disable with the soft disable bit |
662 | * bit 3: soft disabled | |
85f2b082 | 663 | * bit 4: trigger enabled |
553552ce | 664 | * |
417944c4 SRRH |
665 | * Note: The bits must be set atomically to prevent races |
666 | * from other writers. Reads of flags do not need to be in | |
667 | * sync as they occur in critical sections. But the way flags | |
ae63b31e | 668 | * is currently used, these changes do not affect the code |
1eaa4787 SR |
669 | * except that when a change is made, it may have a slight |
670 | * delay in propagating the changes to other CPUs due to | |
417944c4 | 671 | * caching and such. Which is mostly OK ;-) |
553552ce | 672 | */ |
417944c4 | 673 | unsigned long flags; |
1cf4c073 | 674 | atomic_t sm_ref; /* soft-mode reference counter */ |
85f2b082 | 675 | atomic_t tm_ref; /* trigger-mode reference counter */ |
97f20251 SR |
676 | }; |
677 | ||
53cf810b FW |
678 | #define __TRACE_EVENT_FLAGS(name, value) \ |
679 | static int __init trace_init_flags_##name(void) \ | |
680 | { \ | |
de7b2973 | 681 | event_##name.flags |= value; \ |
53cf810b FW |
682 | return 0; \ |
683 | } \ | |
684 | early_initcall(trace_init_flags_##name); | |
685 | ||
d5b5f391 | 686 | #define __TRACE_EVENT_PERF_PERM(name, expr...) \ |
2425bcb9 | 687 | static int perf_perm_##name(struct trace_event_call *tp_event, \ |
d5b5f391 PZ |
688 | struct perf_event *p_event) \ |
689 | { \ | |
690 | return ({ expr; }); \ | |
691 | } \ | |
692 | static int __init trace_init_perf_perm_##name(void) \ | |
693 | { \ | |
694 | event_##name.perf_perm = &perf_perm_##name; \ | |
695 | return 0; \ | |
696 | } \ | |
697 | early_initcall(trace_init_perf_perm_##name); | |
698 | ||
e531e90b | 699 | #define PERF_MAX_TRACE_SIZE 8192 |
20ab4425 | 700 | |
938aa33f | 701 | #define MAX_FILTER_STR_VAL 256U /* Should handle KSYM_SYMBOL_LEN */ |
97f20251 | 702 | |
85f2b082 TZ |
703 | enum event_trigger_type { |
704 | ETT_NONE = (0), | |
2a2df321 | 705 | ETT_TRACE_ONOFF = (1 << 0), |
93e31ffb | 706 | ETT_SNAPSHOT = (1 << 1), |
f21ecbb3 | 707 | ETT_STACKTRACE = (1 << 2), |
7862ad18 | 708 | ETT_EVENT_ENABLE = (1 << 3), |
7ef224d1 | 709 | ETT_EVENT_HIST = (1 << 4), |
d0bad49b | 710 | ETT_HIST_ENABLE = (1 << 5), |
7491e2c4 | 711 | ETT_EVENT_EPROBE = (1 << 6), |
85f2b082 TZ |
712 | }; |
713 | ||
6fb2915d | 714 | extern int filter_match_preds(struct event_filter *filter, void *rec); |
f306cc82 | 715 | |
1ac4f51c | 716 | extern enum event_trigger_type |
b47e3302 SRV |
717 | event_triggers_call(struct trace_event_file *file, |
718 | struct trace_buffer *buffer, void *rec, | |
1ac4f51c TZ |
719 | struct ring_buffer_event *event); |
720 | extern void | |
721 | event_triggers_post_call(struct trace_event_file *file, | |
c94e45bc | 722 | enum event_trigger_type tt); |
97f20251 | 723 | |
3fdaf80f SRRH |
724 | bool trace_event_ignore_this_pid(struct trace_event_file *trace_file); |
725 | ||
bc82c38a CL |
726 | bool __trace_trigger_soft_disabled(struct trace_event_file *file); |
727 | ||
13a1e4ae | 728 | /** |
09a5059a | 729 | * trace_trigger_soft_disabled - do triggers and test if soft disabled |
13a1e4ae SRRH |
730 | * @file: The file pointer of the event to test |
731 | * | |
732 | * If any triggers without filters are attached to this event, they | |
733 | * will be called here. If the event is soft disabled and has no | |
734 | * triggers that require testing the fields, it will return true, | |
735 | * otherwise false. | |
736 | */ | |
bc82c38a | 737 | static __always_inline bool |
09a5059a | 738 | trace_trigger_soft_disabled(struct trace_event_file *file) |
13a1e4ae SRRH |
739 | { |
740 | unsigned long eflags = file->flags; | |
741 | ||
bc82c38a CL |
742 | if (likely(!(eflags & (EVENT_FILE_FL_TRIGGER_MODE | |
743 | EVENT_FILE_FL_SOFT_DISABLED | | |
744 | EVENT_FILE_FL_PID_FILTER)))) | |
745 | return false; | |
746 | ||
747 | if (likely(eflags & EVENT_FILE_FL_TRIGGER_COND)) | |
748 | return false; | |
749 | ||
750 | return __trace_trigger_soft_disabled(file); | |
13a1e4ae SRRH |
751 | } |
752 | ||
098d2164 | 753 | #ifdef CONFIG_BPF_EVENTS |
e87c6bc3 | 754 | unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx); |
82e6b1ee | 755 | int perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie); |
e87c6bc3 | 756 | void perf_event_detach_bpf_prog(struct perf_event *event); |
f4e2298e | 757 | int perf_event_query_prog_array(struct perf_event *event, void __user *info); |
c4f6699d AS |
758 | int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog *prog); |
759 | int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_prog *prog); | |
a38d1107 MM |
760 | struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name); |
761 | void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp); | |
41bdc4b4 YS |
762 | int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id, |
763 | u32 *fd_type, const char **buf, | |
764 | u64 *probe_offset, u64 *probe_addr); | |
0dcac272 | 765 | int bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog); |
89ae89f5 | 766 | int bpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog); |
2541517c | 767 | #else |
e87c6bc3 | 768 | static inline unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx) |
2541517c AS |
769 | { |
770 | return 1; | |
771 | } | |
e87c6bc3 YS |
772 | |
773 | static inline int | |
82e6b1ee | 774 | perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie) |
e87c6bc3 YS |
775 | { |
776 | return -EOPNOTSUPP; | |
777 | } | |
778 | ||
779 | static inline void perf_event_detach_bpf_prog(struct perf_event *event) { } | |
780 | ||
f4e2298e YS |
781 | static inline int |
782 | perf_event_query_prog_array(struct perf_event *event, void __user *info) | |
783 | { | |
784 | return -EOPNOTSUPP; | |
785 | } | |
c4f6699d AS |
786 | static inline int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog *p) |
787 | { | |
788 | return -EOPNOTSUPP; | |
789 | } | |
790 | static inline int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_prog *p) | |
791 | { | |
792 | return -EOPNOTSUPP; | |
793 | } | |
a38d1107 | 794 | static inline struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name) |
c4f6699d AS |
795 | { |
796 | return NULL; | |
797 | } | |
a38d1107 MM |
798 | static inline void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp) |
799 | { | |
800 | } | |
41bdc4b4 YS |
801 | static inline int bpf_get_perf_event_info(const struct perf_event *event, |
802 | u32 *prog_id, u32 *fd_type, | |
803 | const char **buf, u64 *probe_offset, | |
804 | u64 *probe_addr) | |
805 | { | |
806 | return -EOPNOTSUPP; | |
807 | } | |
0dcac272 JO |
808 | static inline int |
809 | bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog) | |
810 | { | |
811 | return -EOPNOTSUPP; | |
812 | } | |
89ae89f5 JO |
813 | static inline int |
814 | bpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog) | |
0dcac272 JO |
815 | { |
816 | return -EOPNOTSUPP; | |
817 | } | |
2541517c AS |
818 | #endif |
819 | ||
43b51ead LZ |
820 | enum { |
821 | FILTER_OTHER = 0, | |
822 | FILTER_STATIC_STRING, | |
823 | FILTER_DYN_STRING, | |
05770dd0 | 824 | FILTER_RDYN_STRING, |
87a342f5 | 825 | FILTER_PTR_STRING, |
02aa3162 | 826 | FILTER_TRACE_FN, |
39f7c41c | 827 | FILTER_CPUMASK, |
e57cbaf0 SRRH |
828 | FILTER_COMM, |
829 | FILTER_CPU, | |
4b512860 | 830 | FILTER_STACKTRACE, |
43b51ead LZ |
831 | }; |
832 | ||
2425bcb9 SRRH |
833 | extern int trace_event_raw_init(struct trace_event_call *call); |
834 | extern int trace_define_field(struct trace_event_call *call, const char *type, | |
aeaeae11 FW |
835 | const char *name, int offset, int size, |
836 | int is_signed, int filter_type); | |
2425bcb9 SRRH |
837 | extern int trace_add_event_call(struct trace_event_call *call); |
838 | extern int trace_remove_event_call(struct trace_event_call *call); | |
32bbe007 | 839 | extern int trace_event_get_offsets(struct trace_event_call *call); |
97f20251 | 840 | |
595a438c | 841 | int ftrace_set_clr_event(struct trace_array *tr, char *buf, int set); |
4671c794 | 842 | int trace_set_clr_event(const char *system, const char *event, int set); |
28879787 DI |
843 | int trace_array_set_clr_event(struct trace_array *tr, const char *system, |
844 | const char *event, bool enable); | |
97f20251 SR |
845 | /* |
846 | * The double __builtin_constant_p is because gcc will give us an error | |
847 | * if we try to allocate the static variable to fmt if it is not a | |
848 | * constant. Even with the outer if statement optimizing out. | |
849 | */ | |
850 | #define event_trace_printk(ip, fmt, args...) \ | |
851 | do { \ | |
852 | __trace_printk_check_format(fmt, ##args); \ | |
853 | tracing_record_cmdline(current); \ | |
854 | if (__builtin_constant_p(fmt)) { \ | |
855 | static const char *trace_printk_fmt \ | |
33def849 | 856 | __section("__trace_printk_fmt") = \ |
97f20251 SR |
857 | __builtin_constant_p(fmt) ? fmt : NULL; \ |
858 | \ | |
859 | __trace_bprintk(ip, trace_printk_fmt, ##args); \ | |
860 | } else \ | |
861 | __trace_printk(ip, fmt, ##args); \ | |
862 | } while (0) | |
863 | ||
07b139c8 | 864 | #ifdef CONFIG_PERF_EVENTS |
6fb2915d | 865 | struct perf_event; |
c530665c FW |
866 | |
867 | DECLARE_PER_CPU(struct pt_regs, perf_trace_regs); | |
9802d865 | 868 | DECLARE_PER_CPU(int, bpf_kprobe_override); |
c530665c | 869 | |
1c024eca PZ |
870 | extern int perf_trace_init(struct perf_event *event); |
871 | extern void perf_trace_destroy(struct perf_event *event); | |
a4eaf7f1 PZ |
872 | extern int perf_trace_add(struct perf_event *event, int flags); |
873 | extern void perf_trace_del(struct perf_event *event, int flags); | |
e12f03d7 SL |
874 | #ifdef CONFIG_KPROBE_EVENTS |
875 | extern int perf_kprobe_init(struct perf_event *event, bool is_retprobe); | |
876 | extern void perf_kprobe_destroy(struct perf_event *event); | |
41bdc4b4 YS |
877 | extern int bpf_get_kprobe_info(const struct perf_event *event, |
878 | u32 *fd_type, const char **symbol, | |
879 | u64 *probe_offset, u64 *probe_addr, | |
880 | bool perf_type_tracepoint); | |
e12f03d7 | 881 | #endif |
33ea4b24 | 882 | #ifdef CONFIG_UPROBE_EVENTS |
a6ca88b2 SL |
883 | extern int perf_uprobe_init(struct perf_event *event, |
884 | unsigned long ref_ctr_offset, bool is_retprobe); | |
33ea4b24 | 885 | extern void perf_uprobe_destroy(struct perf_event *event); |
41bdc4b4 YS |
886 | extern int bpf_get_uprobe_info(const struct perf_event *event, |
887 | u32 *fd_type, const char **filename, | |
5125e757 YS |
888 | u64 *probe_offset, u64 *probe_addr, |
889 | bool perf_type_tracepoint); | |
33ea4b24 | 890 | #endif |
1c024eca | 891 | extern int ftrace_profile_set_filter(struct perf_event *event, int event_id, |
6fb2915d LZ |
892 | char *filter_str); |
893 | extern void ftrace_profile_free_filter(struct perf_event *event); | |
1e1dcd93 AS |
894 | void perf_trace_buf_update(void *record, u16 type); |
895 | void *perf_trace_buf_alloc(int size, struct pt_regs **regs, int *rctxp); | |
430ad5a6 | 896 | |
82e6b1ee | 897 | int perf_event_set_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie); |
b89fbfbb AN |
898 | void perf_event_free_bpf_prog(struct perf_event *event); |
899 | ||
c4f6699d AS |
900 | void bpf_trace_run1(struct bpf_prog *prog, u64 arg1); |
901 | void bpf_trace_run2(struct bpf_prog *prog, u64 arg1, u64 arg2); | |
902 | void bpf_trace_run3(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
903 | u64 arg3); | |
904 | void bpf_trace_run4(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
905 | u64 arg3, u64 arg4); | |
906 | void bpf_trace_run5(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
907 | u64 arg3, u64 arg4, u64 arg5); | |
908 | void bpf_trace_run6(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
909 | u64 arg3, u64 arg4, u64 arg5, u64 arg6); | |
910 | void bpf_trace_run7(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
911 | u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7); | |
912 | void bpf_trace_run8(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
913 | u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, | |
914 | u64 arg8); | |
915 | void bpf_trace_run9(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
916 | u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, | |
917 | u64 arg8, u64 arg9); | |
918 | void bpf_trace_run10(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
919 | u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, | |
920 | u64 arg8, u64 arg9, u64 arg10); | |
921 | void bpf_trace_run11(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
922 | u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, | |
923 | u64 arg8, u64 arg9, u64 arg10, u64 arg11); | |
924 | void bpf_trace_run12(struct bpf_prog *prog, u64 arg1, u64 arg2, | |
925 | u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7, | |
926 | u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12); | |
85b67bcb AS |
927 | void perf_trace_run_bpf_submit(void *raw_data, int size, int rctx, |
928 | struct trace_event_call *call, u64 count, | |
929 | struct pt_regs *regs, struct hlist_head *head, | |
930 | struct task_struct *task); | |
931 | ||
430ad5a6 | 932 | static inline void |
1e1dcd93 | 933 | perf_trace_buf_submit(void *raw_data, int size, int rctx, u16 type, |
e6dab5ff | 934 | u64 count, struct pt_regs *regs, void *head, |
8fd0fbbe | 935 | struct task_struct *task) |
430ad5a6 | 936 | { |
8fd0fbbe | 937 | perf_tp_event(type, count, raw_data, size, regs, head, rctx, task); |
430ad5a6 | 938 | } |
e87c6bc3 | 939 | |
6fb2915d LZ |
940 | #endif |
941 | ||
0563231f SRG |
942 | #define TRACE_EVENT_STR_MAX 512 |
943 | ||
944 | /* | |
945 | * gcc warns that you can not use a va_list in an inlined | |
946 | * function. But lets me make it into a macro :-/ | |
947 | */ | |
948 | #define __trace_event_vstr_len(fmt, va) \ | |
949 | ({ \ | |
950 | va_list __ap; \ | |
951 | int __ret; \ | |
952 | \ | |
953 | va_copy(__ap, *(va)); \ | |
954 | __ret = vsnprintf(NULL, 0, fmt, __ap) + 1; \ | |
955 | va_end(__ap); \ | |
956 | \ | |
957 | min(__ret, TRACE_EVENT_STR_MAX); \ | |
958 | }) | |
959 | ||
2425bcb9 | 960 | #endif /* _LINUX_TRACE_EVENT_H */ |
3a73333f SRG |
961 | |
962 | /* | |
963 | * Note: we keep the TRACE_CUSTOM_EVENT outside the include file ifdef protection. | |
964 | * This is due to the way trace custom events work. If a file includes two | |
965 | * trace event headers under one "CREATE_CUSTOM_TRACE_EVENTS" the first include | |
966 | * will override the TRACE_CUSTOM_EVENT and break the second include. | |
967 | */ | |
968 | ||
969 | #ifndef TRACE_CUSTOM_EVENT | |
970 | ||
971 | #define DECLARE_CUSTOM_EVENT_CLASS(name, proto, args, tstruct, assign, print) | |
972 | #define DEFINE_CUSTOM_EVENT(template, name, proto, args) | |
973 | #define TRACE_CUSTOM_EVENT(name, proto, args, struct, assign, print) | |
974 | ||
975 | #endif /* ifdef TRACE_CUSTOM_EVENT (see note above) */ |