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9f36eaed MJ |
1 | /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) |
2 | * | |
a90917c3 | 3 | * lttng-events.h |
4e3c1b9b | 4 | * |
4e3c1b9b | 5 | * Holds LTTng per-session event registry. |
17baffe2 | 6 | * |
886d51a3 | 7 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
4e3c1b9b MD |
8 | */ |
9 | ||
9f36eaed MJ |
10 | #ifndef _LTTNG_EVENTS_H |
11 | #define _LTTNG_EVENTS_H | |
12 | ||
2d042821 | 13 | #include <lttng-kernel-version.h> |
4e3c1b9b | 14 | #include <linux/list.h> |
d6d808f3 | 15 | #include <linux/kprobes.h> |
d83004aa | 16 | #include <linux/kref.h> |
1e367326 | 17 | #include <lttng-cpuhotplug.h> |
41f229dc | 18 | #include <linux/uuid.h> |
67f4eaf8 | 19 | #include <linux/irq_work.h> |
149b9a9d | 20 | #include <wrapper/uprobes.h> |
f64dd4be | 21 | #include <lttng-tracer.h> |
bbd023d6 MD |
22 | #include <lttng-abi.h> |
23 | #include <lttng-abi-old.h> | |
4e3c1b9b | 24 | |
4d879d23 | 25 | #define lttng_is_signed_type(type) (((type) -1) < (type) 1) |
9e7e4892 | 26 | |
a90917c3 MD |
27 | struct lttng_channel; |
28 | struct lttng_session; | |
d83004aa | 29 | struct lttng_metadata_cache; |
1c25284c | 30 | struct lib_ring_buffer_ctx; |
ba1f5986 | 31 | struct perf_event; |
833ad6a0 | 32 | struct perf_event_attr; |
3b731ab1 | 33 | struct lib_ring_buffer_config; |
4e3c1b9b | 34 | |
c0edae1d MD |
35 | /* Type description */ |
36 | ||
c0edae1d MD |
37 | enum abstract_types { |
38 | atype_integer, | |
39 | atype_enum, | |
40 | atype_array, | |
41 | atype_sequence, | |
42 | atype_string, | |
f513b2bf MD |
43 | atype_struct, |
44 | atype_array_compound, /* Array of compound types. */ | |
45 | atype_sequence_compound, /* Sequence of compound types. */ | |
65c85aa6 | 46 | atype_variant, |
3834b99f MD |
47 | atype_array_bitfield, |
48 | atype_sequence_bitfield, | |
c0edae1d MD |
49 | NR_ABSTRACT_TYPES, |
50 | }; | |
51 | ||
c0edae1d | 52 | enum lttng_string_encodings { |
e0a7a7c4 MD |
53 | lttng_encode_none = 0, |
54 | lttng_encode_UTF8 = 1, | |
55 | lttng_encode_ASCII = 2, | |
c0edae1d MD |
56 | NR_STRING_ENCODINGS, |
57 | }; | |
58 | ||
d83004aa JD |
59 | enum channel_type { |
60 | PER_CPU_CHANNEL, | |
61 | METADATA_CHANNEL, | |
62 | }; | |
63 | ||
141ddf28 MD |
64 | struct lttng_enum_value { |
65 | unsigned long long value; | |
66 | unsigned int signedness:1; | |
67 | }; | |
68 | ||
c0edae1d | 69 | struct lttng_enum_entry { |
141ddf28 | 70 | struct lttng_enum_value start, end; /* start and end are inclusive */ |
c0edae1d | 71 | const char *string; |
08ad1061 PP |
72 | struct { |
73 | unsigned int is_auto:1; | |
74 | } options; | |
c0edae1d MD |
75 | }; |
76 | ||
43803cf2 | 77 | #define __type_integer(_type, _size, _alignment, _signedness, \ |
79282ffd | 78 | _byte_order, _user, _base, _encoding) \ |
c099397a MD |
79 | { \ |
80 | .atype = atype_integer, \ | |
81 | .u.basic.integer = \ | |
82 | { \ | |
43803cf2 MD |
83 | .size = (_size) ? : sizeof(_type) * CHAR_BIT, \ |
84 | .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \ | |
85 | .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \ | |
79282ffd MD |
86 | .reverse_byte_order = (_byte_order) != __BYTE_ORDER, \ |
87 | .base = (_base), \ | |
88 | .user = (_user), \ | |
64c796d8 | 89 | .encoding = lttng_encode_##_encoding, \ |
c099397a MD |
90 | }, \ |
91 | } \ | |
92 | ||
93 | struct lttng_integer_type { | |
94 | unsigned int size; /* in bits */ | |
95 | unsigned short alignment; /* in bits */ | |
9cccf98a | 96 | unsigned int signedness:1, |
79282ffd MD |
97 | reverse_byte_order:1, |
98 | user:1; /* fetch from user-space */ | |
e0a7a7c4 MD |
99 | unsigned int base; /* 2, 8, 10, 16, for pretty print */ |
100 | enum lttng_string_encodings encoding; | |
c099397a MD |
101 | }; |
102 | ||
103 | union _lttng_basic_type { | |
104 | struct lttng_integer_type integer; | |
105 | struct { | |
141ddf28 MD |
106 | const struct lttng_enum_desc *desc; /* Enumeration mapping */ |
107 | struct lttng_integer_type container_type; | |
c099397a MD |
108 | } enumeration; |
109 | struct { | |
110 | enum lttng_string_encodings encoding; | |
79282ffd | 111 | unsigned int user:1; /* fetch from user-space */ |
c099397a MD |
112 | } string; |
113 | }; | |
114 | ||
115 | struct lttng_basic_type { | |
116 | enum abstract_types atype; | |
117 | union { | |
118 | union _lttng_basic_type basic; | |
119 | } u; | |
c0edae1d MD |
120 | }; |
121 | ||
122 | struct lttng_type { | |
123 | enum abstract_types atype; | |
c0edae1d | 124 | union { |
c099397a | 125 | union _lttng_basic_type basic; |
c0edae1d | 126 | struct { |
c099397a | 127 | struct lttng_basic_type elem_type; |
c0edae1d | 128 | unsigned int length; /* num. elems. */ |
43803cf2 | 129 | unsigned int elem_alignment; /* alignment override */ |
c0edae1d MD |
130 | } array; |
131 | struct { | |
c099397a MD |
132 | struct lttng_basic_type length_type; |
133 | struct lttng_basic_type elem_type; | |
43803cf2 | 134 | unsigned int elem_alignment; /* alignment override */ |
c0edae1d | 135 | } sequence; |
f513b2bf MD |
136 | struct { |
137 | uint32_t nr_fields; | |
138 | struct lttng_event_field *fields; /* Array of fields. */ | |
139 | } _struct; | |
140 | struct { | |
141 | struct lttng_type *elem_type; | |
142 | unsigned int length; /* num. elems. */ | |
143 | } array_compound; | |
144 | struct { | |
145 | struct lttng_type *elem_type; | |
146 | const char *length_name; | |
147 | } sequence_compound; | |
65c85aa6 MD |
148 | struct { |
149 | const char *tag_name; | |
150 | struct lttng_event_field *choices; /* Array of fields. */ | |
151 | uint32_t nr_choices; | |
152 | } variant; | |
c0edae1d | 153 | } u; |
c099397a MD |
154 | }; |
155 | ||
141ddf28 | 156 | struct lttng_enum_desc { |
c099397a | 157 | const char *name; |
c099397a | 158 | const struct lttng_enum_entry *entries; |
141ddf28 | 159 | unsigned int nr_entries; |
c099397a | 160 | }; |
c0edae1d MD |
161 | |
162 | /* Event field description */ | |
163 | ||
164 | struct lttng_event_field { | |
165 | const char *name; | |
f17701fb | 166 | struct lttng_type type; |
79282ffd | 167 | unsigned int nowrite:1; /* do not write into trace */ |
c0edae1d MD |
168 | }; |
169 | ||
07dfc1d0 MD |
170 | union lttng_ctx_value { |
171 | int64_t s64; | |
172 | const char *str; | |
173 | double d; | |
174 | }; | |
175 | ||
2001023e MD |
176 | /* |
177 | * We need to keep this perf counter field separately from struct | |
178 | * lttng_ctx_field because cpu hotplug needs fixed-location addresses. | |
179 | */ | |
180 | struct lttng_perf_counter_field { | |
2d042821 | 181 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) |
1e367326 MD |
182 | struct lttng_cpuhp_node cpuhp_prepare; |
183 | struct lttng_cpuhp_node cpuhp_online; | |
184 | #else | |
2001023e MD |
185 | struct notifier_block nb; |
186 | int hp_enable; | |
1e367326 | 187 | #endif |
2001023e MD |
188 | struct perf_event_attr *attr; |
189 | struct perf_event **e; /* per-cpu array */ | |
190 | }; | |
191 | ||
79150a49 JD |
192 | struct lttng_probe_ctx { |
193 | struct lttng_event *event; | |
194 | uint8_t interruptible; | |
195 | }; | |
196 | ||
ba1f5986 | 197 | struct lttng_ctx_field { |
8070f5c0 | 198 | struct lttng_event_field event_field; |
f1676205 | 199 | size_t (*get_size)(size_t offset); |
1474c8e2 FG |
200 | size_t (*get_size_arg)(size_t offset, struct lttng_ctx_field *field, |
201 | struct lib_ring_buffer_ctx *ctx, | |
202 | struct lttng_channel *chan); | |
f1676205 MD |
203 | void (*record)(struct lttng_ctx_field *field, |
204 | struct lib_ring_buffer_ctx *ctx, | |
a90917c3 | 205 | struct lttng_channel *chan); |
07dfc1d0 | 206 | void (*get_value)(struct lttng_ctx_field *field, |
79150a49 | 207 | struct lttng_probe_ctx *lttng_probe_ctx, |
07dfc1d0 | 208 | union lttng_ctx_value *value); |
ba1f5986 | 209 | union { |
2001023e | 210 | struct lttng_perf_counter_field *perf_counter; |
ba1f5986 | 211 | } u; |
2dccf128 | 212 | void (*destroy)(struct lttng_ctx_field *field); |
3c1a57e8 MD |
213 | /* |
214 | * Private data to keep state between get_size and record. | |
215 | * User must perform its own synchronization to protect against | |
216 | * concurrent and reentrant contexts. | |
217 | */ | |
218 | void *priv; | |
ba1f5986 MD |
219 | }; |
220 | ||
221 | struct lttng_ctx { | |
833ad6a0 | 222 | struct lttng_ctx_field *fields; |
0d1a681e | 223 | unsigned int nr_fields; |
ba1f5986 | 224 | unsigned int allocated_fields; |
a9dd15da | 225 | size_t largest_align; /* in bytes */ |
0d1a681e MD |
226 | }; |
227 | ||
228 | struct lttng_event_desc { | |
a26a7e4f MD |
229 | const char *name; /* lttng-modules name */ |
230 | const char *kname; /* Linux kernel name (tracepoints) */ | |
c0edae1d | 231 | void *probe_callback; |
0d1a681e MD |
232 | const struct lttng_event_ctx *ctx; /* context */ |
233 | const struct lttng_event_field *fields; /* event payload */ | |
c0edae1d | 234 | unsigned int nr_fields; |
dc7f600a | 235 | struct module *owner; |
c0edae1d MD |
236 | }; |
237 | ||
85a9ca7f | 238 | struct lttng_probe_desc { |
3c997079 | 239 | const char *provider; |
f7bdf4db | 240 | const struct lttng_event_desc **event_desc; |
85a9ca7f MD |
241 | unsigned int nr_events; |
242 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
243 | struct list_head lazy_init_head; |
244 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
245 | }; |
246 | ||
7371f44c MD |
247 | struct lttng_krp; /* Kretprobe handling */ |
248 | ||
3c997079 MD |
249 | enum lttng_event_type { |
250 | LTTNG_TYPE_EVENT = 0, | |
251 | LTTNG_TYPE_ENABLER = 1, | |
252 | }; | |
253 | ||
07dfc1d0 MD |
254 | struct lttng_filter_bytecode_node { |
255 | struct list_head node; | |
256 | struct lttng_enabler *enabler; | |
257 | /* | |
258 | * struct lttng_kernel_filter_bytecode has var. sized array, must be | |
259 | * last field. | |
260 | */ | |
261 | struct lttng_kernel_filter_bytecode bc; | |
262 | }; | |
263 | ||
264 | /* | |
265 | * Filter return value masks. | |
266 | */ | |
267 | enum lttng_filter_ret { | |
268 | LTTNG_FILTER_DISCARD = 0, | |
269 | LTTNG_FILTER_RECORD_FLAG = (1ULL << 0), | |
270 | /* Other bits are kept for future use. */ | |
271 | }; | |
272 | ||
273 | struct lttng_bytecode_runtime { | |
274 | /* Associated bytecode */ | |
275 | struct lttng_filter_bytecode_node *bc; | |
79150a49 JD |
276 | uint64_t (*filter)(void *filter_data, struct lttng_probe_ctx *lttng_probe_ctx, |
277 | const char *filter_stack_data); | |
07dfc1d0 MD |
278 | int link_failed; |
279 | struct list_head node; /* list of bytecode runtime in event */ | |
3834b99f | 280 | struct lttng_event *event; |
07dfc1d0 MD |
281 | }; |
282 | ||
3c997079 MD |
283 | /* |
284 | * Objects in a linked-list of enablers, owned by an event. | |
285 | */ | |
286 | struct lttng_enabler_ref { | |
287 | struct list_head node; /* enabler ref list */ | |
288 | struct lttng_enabler *ref; /* backward ref */ | |
289 | }; | |
290 | ||
3aed4dca FD |
291 | struct lttng_uprobe_handler { |
292 | struct lttng_event *event; | |
293 | loff_t offset; | |
294 | struct uprobe_consumer up_consumer; | |
295 | struct list_head node; | |
296 | }; | |
297 | ||
ad594e3a MD |
298 | enum lttng_syscall_entryexit { |
299 | LTTNG_SYSCALL_ENTRY, | |
300 | LTTNG_SYSCALL_EXIT, | |
301 | }; | |
302 | ||
303 | enum lttng_syscall_abi { | |
304 | LTTNG_SYSCALL_ABI_NATIVE, | |
305 | LTTNG_SYSCALL_ABI_COMPAT, | |
306 | }; | |
307 | ||
85a9ca7f | 308 | /* |
a90917c3 | 309 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
310 | * kept small. |
311 | */ | |
a90917c3 | 312 | struct lttng_event { |
3c997079 | 313 | enum lttng_event_type evtype; /* First field. */ |
85a9ca7f | 314 | unsigned int id; |
a90917c3 | 315 | struct lttng_channel *chan; |
e64957da | 316 | int enabled; |
d3dbe23c | 317 | const struct lttng_event_desc *desc; |
85a9ca7f | 318 | void *filter; |
f1676205 | 319 | struct lttng_ctx *ctx; |
38d024ae | 320 | enum lttng_kernel_instrumentation instrumentation; |
d6d808f3 MD |
321 | union { |
322 | struct { | |
323 | struct kprobe kp; | |
324 | char *symbol_name; | |
325 | } kprobe; | |
7371f44c MD |
326 | struct { |
327 | struct lttng_krp *lttng_krp; | |
328 | char *symbol_name; | |
329 | } kretprobe; | |
149b9a9d | 330 | struct { |
149b9a9d | 331 | struct inode *inode; |
3aed4dca | 332 | struct list_head head; |
149b9a9d | 333 | } uprobe; |
ad594e3a MD |
334 | struct { |
335 | char *syscall_name; | |
336 | enum lttng_syscall_entryexit entryexit; | |
337 | enum lttng_syscall_abi abi; | |
338 | } syscall; | |
d6d808f3 | 339 | } u; |
3c997079 | 340 | struct list_head list; /* Event list in session */ |
9cccf98a | 341 | unsigned int metadata_dumped:1; |
3c997079 MD |
342 | |
343 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
344 | struct list_head enablers_ref_head; | |
345 | struct hlist_node hlist; /* session ht of events */ | |
346 | int registered; /* has reg'd tracepoint probe */ | |
07dfc1d0 MD |
347 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
348 | struct list_head bytecode_runtime_head; | |
349 | int has_enablers_without_bytecode; | |
3c997079 MD |
350 | }; |
351 | ||
352 | enum lttng_enabler_type { | |
4993071a | 353 | LTTNG_ENABLER_STAR_GLOB, |
3c997079 MD |
354 | LTTNG_ENABLER_NAME, |
355 | }; | |
356 | ||
357 | /* | |
358 | * Enabler field, within whatever object is enabling an event. Target of | |
359 | * backward reference. | |
360 | */ | |
361 | struct lttng_enabler { | |
362 | enum lttng_event_type evtype; /* First field. */ | |
363 | ||
364 | enum lttng_enabler_type type; | |
365 | ||
366 | struct list_head node; /* per-session list of enablers */ | |
07dfc1d0 MD |
367 | /* head list of struct lttng_ust_filter_bytecode_node */ |
368 | struct list_head filter_bytecode_head; | |
3c997079 MD |
369 | |
370 | struct lttng_kernel_event event_param; | |
371 | struct lttng_channel *chan; | |
372 | struct lttng_ctx *ctx; | |
373 | unsigned int enabled:1; | |
85a9ca7f MD |
374 | }; |
375 | ||
a90917c3 | 376 | struct lttng_channel_ops { |
85a9ca7f | 377 | struct channel *(*channel_create)(const char *name, |
a90917c3 | 378 | struct lttng_channel *lttng_chan, |
85a9ca7f MD |
379 | void *buf_addr, |
380 | size_t subbuf_size, size_t num_subbuf, | |
381 | unsigned int switch_timer_interval, | |
382 | unsigned int read_timer_interval); | |
383 | void (*channel_destroy)(struct channel *chan); | |
384 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 385 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 386 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 387 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 388 | uint32_t event_id); |
85a9ca7f MD |
389 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
390 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
391 | size_t len); | |
4ea00e4f JD |
392 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
393 | const void *src, size_t len); | |
58aa5d24 MD |
394 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
395 | int c, size_t len); | |
16f78f3a MD |
396 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
397 | size_t len); | |
398 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
399 | const char __user *src, size_t len); | |
1ec3f75a MD |
400 | /* |
401 | * packet_avail_size returns the available size in the current | |
402 | * packet. Note that the size returned is only a hint, since it | |
403 | * may change due to concurrent writes. | |
404 | */ | |
405 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 406 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
407 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
408 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 409 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
410 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
411 | struct lib_ring_buffer *bufb, | |
412 | uint64_t *timestamp_begin); | |
413 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
414 | struct lib_ring_buffer *bufb, | |
415 | uint64_t *timestamp_end); | |
416 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
417 | struct lib_ring_buffer *bufb, | |
418 | uint64_t *events_discarded); | |
419 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
420 | struct lib_ring_buffer *bufb, | |
421 | uint64_t *content_size); | |
422 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
423 | struct lib_ring_buffer *bufb, | |
424 | uint64_t *packet_size); | |
425 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
426 | struct lib_ring_buffer *bufb, | |
427 | uint64_t *stream_id); | |
2348ca17 JD |
428 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
429 | struct lib_ring_buffer *bufb, | |
430 | uint64_t *ts); | |
5b3cf4f9 JD |
431 | int (*sequence_number) (const struct lib_ring_buffer_config *config, |
432 | struct lib_ring_buffer *bufb, | |
433 | uint64_t *seq); | |
5594698f JD |
434 | int (*instance_id) (const struct lib_ring_buffer_config *config, |
435 | struct lib_ring_buffer *bufb, | |
436 | uint64_t *id); | |
85a9ca7f MD |
437 | }; |
438 | ||
a90917c3 | 439 | struct lttng_transport { |
a33c9927 MD |
440 | char *name; |
441 | struct module *owner; | |
442 | struct list_head node; | |
a90917c3 | 443 | struct lttng_channel_ops ops; |
a33c9927 MD |
444 | }; |
445 | ||
80f87dd2 MD |
446 | struct lttng_syscall_filter; |
447 | ||
3c997079 MD |
448 | #define LTTNG_EVENT_HT_BITS 12 |
449 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
450 | ||
451 | struct lttng_event_ht { | |
452 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
453 | }; | |
454 | ||
a90917c3 | 455 | struct lttng_channel { |
c099397a | 456 | unsigned int id; |
85a9ca7f | 457 | struct channel *chan; /* Channel buffers */ |
e64957da | 458 | int enabled; |
f1676205 | 459 | struct lttng_ctx *ctx; |
85a9ca7f | 460 | /* Event ID management */ |
a90917c3 | 461 | struct lttng_session *session; |
85a9ca7f MD |
462 | struct file *file; /* File associated to channel */ |
463 | unsigned int free_event_id; /* Next event ID to allocate */ | |
464 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
465 | struct lttng_channel_ops *ops; |
466 | struct lttng_transport *transport; | |
467 | struct lttng_event **sc_table; /* for syscall tracing */ | |
468 | struct lttng_event **compat_sc_table; | |
5b7ac358 MD |
469 | struct lttng_event **sc_exit_table; /* for syscall exit tracing */ |
470 | struct lttng_event **compat_sc_exit_table; | |
a90917c3 MD |
471 | struct lttng_event *sc_unknown; /* for unknown syscalls */ |
472 | struct lttng_event *sc_compat_unknown; | |
5b7ac358 MD |
473 | struct lttng_event *sc_exit_unknown; |
474 | struct lttng_event *compat_sc_exit_unknown; | |
80f87dd2 | 475 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 476 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 477 | enum channel_type channel_type; |
ad594e3a | 478 | int syscall_all; |
80f87dd2 MD |
479 | unsigned int metadata_dumped:1, |
480 | sys_enter_registered:1, | |
481 | sys_exit_registered:1, | |
3c997079 | 482 | tstate:1; /* Transient enable state */ |
85a9ca7f MD |
483 | }; |
484 | ||
d83004aa JD |
485 | struct lttng_metadata_stream { |
486 | void *priv; /* Ring buffer private data */ | |
487 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
488 | unsigned int metadata_in; /* Bytes read from the cache */ |
489 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
490 | int finalized; /* Has channel been finalized */ |
491 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
492 | struct list_head list; /* Stream list */ | |
b3b8072b | 493 | struct lttng_transport *transport; |
9616f0bf | 494 | uint64_t version; /* Current version of the metadata cache */ |
122c63cb | 495 | bool coherent; /* Stream in a coherent state */ |
d83004aa JD |
496 | }; |
497 | ||
114667d5 MD |
498 | #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 |
499 | ||
500 | struct lttng_dynamic_len_stack { | |
501 | size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE]; | |
502 | size_t offset; | |
503 | }; | |
504 | ||
505 | DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); | |
e0130fab MD |
506 | |
507 | /* | |
d1f652f8 | 508 | * struct lttng_id_tracker declared in header due to deferencing of *v |
e0130fab MD |
509 | * in RCU_INITIALIZER(v). |
510 | */ | |
d1f652f8 MD |
511 | #define LTTNG_ID_HASH_BITS 6 |
512 | #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) | |
e0130fab | 513 | |
d1f652f8 MD |
514 | enum tracker_type { |
515 | TRACKER_PID, | |
516 | TRACKER_VPID, | |
517 | TRACKER_UID, | |
518 | TRACKER_VUID, | |
519 | TRACKER_GID, | |
520 | TRACKER_VGID, | |
521 | ||
522 | TRACKER_UNKNOWN, | |
523 | }; | |
524 | ||
525 | struct lttng_id_tracker_rcu { | |
526 | struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; | |
527 | }; | |
528 | ||
529 | struct lttng_id_tracker { | |
530 | struct lttng_session *session; | |
531 | enum tracker_type tracker_type; | |
532 | struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */ | |
e0130fab MD |
533 | }; |
534 | ||
d1f652f8 | 535 | struct lttng_id_hash_node { |
7e6f9ef6 | 536 | struct hlist_node hlist; |
d1f652f8 | 537 | int id; |
7e6f9ef6 MD |
538 | }; |
539 | ||
a90917c3 | 540 | struct lttng_session { |
85a9ca7f | 541 | int active; /* Is trace session active ? */ |
8070f5c0 | 542 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
543 | struct file *file; /* File associated to session */ |
544 | struct list_head chan; /* Channel list head */ | |
545 | struct list_head events; /* Event list head */ | |
546 | struct list_head list; /* Session list */ | |
c099397a | 547 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 548 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 549 | struct lttng_metadata_cache *metadata_cache; |
d1f652f8 MD |
550 | struct lttng_id_tracker pid_tracker; |
551 | struct lttng_id_tracker vpid_tracker; | |
552 | struct lttng_id_tracker uid_tracker; | |
553 | struct lttng_id_tracker vuid_tracker; | |
554 | struct lttng_id_tracker gid_tracker; | |
555 | struct lttng_id_tracker vgid_tracker; | |
3c997079 MD |
556 | unsigned int metadata_dumped:1, |
557 | tstate:1; /* Transient enable state */ | |
558 | /* List of enablers */ | |
559 | struct list_head enablers_head; | |
560 | /* Hash table of events */ | |
561 | struct lttng_event_ht events_ht; | |
7f859fbf | 562 | char name[LTTNG_KERNEL_SESSION_NAME_LEN]; |
1c88f269 | 563 | char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN]; |
85a9ca7f MD |
564 | }; |
565 | ||
d83004aa JD |
566 | struct lttng_metadata_cache { |
567 | char *data; /* Metadata cache */ | |
568 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
569 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
3780dda9 | 570 | atomic_t producing; /* Metadata being produced (incomplete) */ |
d83004aa JD |
571 | struct kref refcount; /* Metadata cache usage */ |
572 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 573 | uuid_le uuid; /* Trace session unique ID (copy) */ |
9616f0bf JD |
574 | struct mutex lock; /* Produce/consume lock */ |
575 | uint64_t version; /* Current version of the metadata */ | |
d83004aa JD |
576 | }; |
577 | ||
3c997079 MD |
578 | void lttng_lock_sessions(void); |
579 | void lttng_unlock_sessions(void); | |
580 | ||
581 | struct list_head *lttng_get_probe_list_head(void); | |
582 | ||
583 | struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_type type, | |
584 | struct lttng_kernel_event *event_param, | |
585 | struct lttng_channel *chan); | |
586 | ||
587 | int lttng_enabler_enable(struct lttng_enabler *enabler); | |
588 | int lttng_enabler_disable(struct lttng_enabler *enabler); | |
589 | int lttng_fix_pending_events(void); | |
590 | int lttng_session_active(void); | |
591 | ||
a90917c3 MD |
592 | struct lttng_session *lttng_session_create(void); |
593 | int lttng_session_enable(struct lttng_session *session); | |
594 | int lttng_session_disable(struct lttng_session *session); | |
595 | void lttng_session_destroy(struct lttng_session *session); | |
9616f0bf | 596 | int lttng_session_metadata_regenerate(struct lttng_session *session); |
601252cf | 597 | int lttng_session_statedump(struct lttng_session *session); |
d83004aa | 598 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 599 | |
a90917c3 | 600 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
601 | const char *transport_name, |
602 | void *buf_addr, | |
603 | size_t subbuf_size, size_t num_subbuf, | |
604 | unsigned int switch_timer_interval, | |
d83004aa JD |
605 | unsigned int read_timer_interval, |
606 | enum channel_type channel_type); | |
a90917c3 | 607 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
608 | int overwrite, void *buf_addr, |
609 | size_t subbuf_size, size_t num_subbuf, | |
610 | unsigned int switch_timer_interval, | |
611 | unsigned int read_timer_interval); | |
4e3c1b9b | 612 | |
d83004aa | 613 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 614 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
3c997079 MD |
615 | struct lttng_kernel_event *event_param, |
616 | void *filter, | |
617 | const struct lttng_event_desc *event_desc, | |
618 | enum lttng_kernel_instrumentation itype); | |
33a39a3c MD |
619 | struct lttng_event *_lttng_event_create(struct lttng_channel *chan, |
620 | struct lttng_kernel_event *event_param, | |
621 | void *filter, | |
622 | const struct lttng_event_desc *event_desc, | |
623 | enum lttng_kernel_instrumentation itype); | |
6dccd6c1 JD |
624 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
625 | struct lttng_kernel_old_event *old_event_param, | |
626 | void *filter, | |
627 | const struct lttng_event_desc *internal_desc); | |
c0e31d2e | 628 | |
a90917c3 MD |
629 | int lttng_channel_enable(struct lttng_channel *channel); |
630 | int lttng_channel_disable(struct lttng_channel *channel); | |
631 | int lttng_event_enable(struct lttng_event *event); | |
632 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 633 | |
a90917c3 MD |
634 | void lttng_transport_register(struct lttng_transport *transport); |
635 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 636 | |
360f38ea | 637 | void synchronize_trace(void); |
80996790 | 638 | int lttng_abi_init(void); |
6dccd6c1 | 639 | int lttng_abi_compat_old_init(void); |
80996790 | 640 | void lttng_abi_exit(void); |
6dccd6c1 | 641 | void lttng_abi_compat_old_exit(void); |
1c25284c | 642 | |
a90917c3 MD |
643 | int lttng_probe_register(struct lttng_probe_desc *desc); |
644 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
645 | const struct lttng_event_desc *lttng_event_get(const char *name); | |
646 | void lttng_event_put(const struct lttng_event_desc *desc); | |
647 | int lttng_probes_init(void); | |
648 | void lttng_probes_exit(void); | |
1ec65de1 | 649 | |
b3b8072b | 650 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
122c63cb | 651 | struct channel *chan, bool *coherent); |
d83004aa | 652 | |
d1f652f8 MD |
653 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); |
654 | int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); | |
655 | void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); | |
656 | bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id); | |
657 | int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); | |
658 | int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); | |
e0130fab | 659 | |
d1f652f8 MD |
660 | int lttng_session_track_id(struct lttng_session *session, |
661 | enum tracker_type tracker_type, int id); | |
662 | int lttng_session_untrack_id(struct lttng_session *session, | |
663 | enum tracker_type tracker_type, int id); | |
e0130fab | 664 | |
d1f652f8 MD |
665 | int lttng_session_list_tracker_ids(struct lttng_session *session, |
666 | enum tracker_type tracker_type); | |
7e6f9ef6 | 667 | |
2754583e MD |
668 | void lttng_clock_ref(void); |
669 | void lttng_clock_unref(void); | |
670 | ||
3a523f5b | 671 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a90917c3 MD |
672 | int lttng_syscalls_register(struct lttng_channel *chan, void *filter); |
673 | int lttng_syscalls_unregister(struct lttng_channel *chan); | |
ad594e3a | 674 | int lttng_syscalls_destroy(struct lttng_channel *chan); |
80f87dd2 | 675 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
ad594e3a | 676 | struct lttng_event *event); |
80f87dd2 | 677 | int lttng_syscall_filter_disable(struct lttng_channel *chan, |
ad594e3a | 678 | struct lttng_event *event); |
12e579db MD |
679 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
680 | struct lttng_kernel_syscall_mask __user *usyscall_mask); | |
1ec65de1 | 681 | #else |
a90917c3 | 682 | static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter) |
1ec65de1 MD |
683 | { |
684 | return -ENOSYS; | |
685 | } | |
686 | ||
a90917c3 | 687 | static inline int lttng_syscalls_unregister(struct lttng_channel *chan) |
1ec65de1 MD |
688 | { |
689 | return 0; | |
690 | } | |
80f87dd2 | 691 | |
ad594e3a MD |
692 | static inline int lttng_syscalls_destroy(struct lttng_channel *chan) |
693 | { | |
694 | return 0; | |
695 | } | |
696 | ||
f127e61e | 697 | static inline int lttng_syscall_filter_enable(struct lttng_channel *chan, |
5fecce37 | 698 | struct lttng_event *event) |
80f87dd2 MD |
699 | { |
700 | return -ENOSYS; | |
701 | } | |
702 | ||
f127e61e | 703 | static inline int lttng_syscall_filter_disable(struct lttng_channel *chan, |
5fecce37 | 704 | struct lttng_event *event) |
80f87dd2 MD |
705 | { |
706 | return -ENOSYS; | |
707 | } | |
12e579db | 708 | |
f127e61e | 709 | static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, |
12e579db MD |
710 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
711 | { | |
712 | return -ENOSYS; | |
713 | } | |
1ec65de1 MD |
714 | #endif |
715 | ||
07dfc1d0 MD |
716 | void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); |
717 | int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler, | |
718 | struct lttng_kernel_filter_bytecode __user *bytecode); | |
f127e61e MD |
719 | void lttng_enabler_event_link_bytecode(struct lttng_event *event, |
720 | struct lttng_enabler *enabler); | |
b3fdf78b | 721 | void lttng_free_event_filter_runtime(struct lttng_event *event); |
07dfc1d0 | 722 | |
114667d5 MD |
723 | int lttng_probes_init(void); |
724 | ||
07dfc1d0 MD |
725 | extern struct lttng_ctx *lttng_static_ctx; |
726 | ||
727 | int lttng_context_init(void); | |
728 | void lttng_context_exit(void); | |
2dccf128 | 729 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
a9dd15da | 730 | void lttng_context_update(struct lttng_ctx *ctx); |
44252f0f | 731 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
07dfc1d0 | 732 | int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
733 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
734 | struct lttng_ctx_field *field); | |
2dccf128 | 735 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 736 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
b3699d90 | 737 | int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 738 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 739 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 740 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
741 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
742 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
743 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
744 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
745 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 746 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
79150a49 JD |
747 | int lttng_add_interruptible_to_ctx(struct lttng_ctx **ctx); |
748 | int lttng_add_need_reschedule_to_ctx(struct lttng_ctx **ctx); | |
749 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
750 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx); | |
751 | #else | |
752 | static inline | |
753 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx) | |
754 | { | |
755 | return -ENOSYS; | |
756 | } | |
757 | #endif | |
758 | #ifdef CONFIG_PREEMPT_RT_FULL | |
759 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx); | |
760 | #else | |
761 | static inline | |
762 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx) | |
763 | { | |
764 | return -ENOSYS; | |
765 | } | |
766 | #endif | |
2fa2d39a FG |
767 | |
768 | int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type); | |
769 | ||
a6cf40a4 | 770 | #if defined(CONFIG_CGROUPS) && \ |
2d042821 | 771 | ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \ |
a6cf40a4 MJ |
772 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) |
773 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); | |
774 | #else | |
775 | static inline | |
776 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx) | |
777 | { | |
778 | return -ENOSYS; | |
779 | } | |
780 | #endif | |
781 | ||
782 | #if defined(CONFIG_IPC_NS) && \ | |
2d042821 | 783 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
784 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); |
785 | #else | |
786 | static inline | |
787 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx) | |
788 | { | |
789 | return -ENOSYS; | |
790 | } | |
791 | #endif | |
792 | ||
793 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
2d042821 | 794 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
795 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); |
796 | #else | |
797 | static inline | |
798 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx) | |
799 | { | |
800 | return -ENOSYS; | |
801 | } | |
802 | #endif | |
803 | ||
804 | #if defined(CONFIG_NET_NS) && \ | |
2d042821 | 805 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
806 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); |
807 | #else | |
808 | static inline | |
809 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx) | |
810 | { | |
811 | return -ENOSYS; | |
812 | } | |
813 | #endif | |
814 | ||
815 | #if defined(CONFIG_PID_NS) && \ | |
2d042821 | 816 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
817 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); |
818 | #else | |
819 | static inline | |
820 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx) | |
821 | { | |
822 | return -ENOSYS; | |
823 | } | |
824 | #endif | |
825 | ||
826 | #if defined(CONFIG_USER_NS) && \ | |
2d042821 | 827 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
828 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); |
829 | #else | |
830 | static inline | |
831 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx) | |
832 | { | |
833 | return -ENOSYS; | |
834 | } | |
835 | #endif | |
836 | ||
837 | #if defined(CONFIG_UTS_NS) && \ | |
2d042821 | 838 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
839 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); |
840 | #else | |
841 | static inline | |
842 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx) | |
843 | { | |
844 | return -ENOSYS; | |
845 | } | |
846 | #endif | |
847 | ||
dc923e75 MJ |
848 | int lttng_add_uid_to_ctx(struct lttng_ctx **ctx); |
849 | int lttng_add_euid_to_ctx(struct lttng_ctx **ctx); | |
850 | int lttng_add_suid_to_ctx(struct lttng_ctx **ctx); | |
851 | int lttng_add_gid_to_ctx(struct lttng_ctx **ctx); | |
852 | int lttng_add_egid_to_ctx(struct lttng_ctx **ctx); | |
853 | int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx); | |
854 | int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx); | |
855 | int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx); | |
856 | int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx); | |
857 | int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx); | |
858 | int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx); | |
859 | int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx); | |
860 | ||
8a3af9ee | 861 | #if defined(CONFIG_PERF_EVENTS) |
c24a0d71 MD |
862 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
863 | uint64_t config, | |
864 | const char *name, | |
865 | struct lttng_ctx **ctx); | |
1e367326 MD |
866 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, |
867 | struct lttng_cpuhp_node *node); | |
868 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
869 | struct lttng_cpuhp_node *node); | |
1d443b34 MD |
870 | #else |
871 | static inline | |
872 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
873 | uint64_t config, | |
874 | const char *name, | |
875 | struct lttng_ctx **ctx) | |
876 | { | |
877 | return -ENOSYS; | |
878 | } | |
1e367326 MD |
879 | static inline |
880 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
881 | struct lttng_cpuhp_node *node) | |
882 | { | |
883 | return 0; | |
884 | } | |
885 | static inline | |
886 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
887 | struct lttng_cpuhp_node *node) | |
888 | { | |
889 | return 0; | |
890 | } | |
1d443b34 | 891 | #endif |
02119ee5 | 892 | |
0c956676 MD |
893 | int lttng_logger_init(void); |
894 | void lttng_logger_exit(void); | |
895 | ||
c337ddc2 MD |
896 | extern int lttng_statedump_start(struct lttng_session *session); |
897 | ||
acd614cc | 898 | #ifdef CONFIG_KPROBES |
f17701fb MD |
899 | int lttng_kprobes_register(const char *name, |
900 | const char *symbol_name, | |
901 | uint64_t offset, | |
902 | uint64_t addr, | |
a90917c3 MD |
903 | struct lttng_event *event); |
904 | void lttng_kprobes_unregister(struct lttng_event *event); | |
905 | void lttng_kprobes_destroy_private(struct lttng_event *event); | |
acd614cc MD |
906 | #else |
907 | static inline | |
908 | int lttng_kprobes_register(const char *name, | |
909 | const char *symbol_name, | |
910 | uint64_t offset, | |
911 | uint64_t addr, | |
a90917c3 | 912 | struct lttng_event *event) |
acd614cc MD |
913 | { |
914 | return -ENOSYS; | |
915 | } | |
916 | ||
25f53c39 | 917 | static inline |
a90917c3 | 918 | void lttng_kprobes_unregister(struct lttng_event *event) |
acd614cc MD |
919 | { |
920 | } | |
edeb3137 MD |
921 | |
922 | static inline | |
a90917c3 | 923 | void lttng_kprobes_destroy_private(struct lttng_event *event) |
edeb3137 MD |
924 | { |
925 | } | |
acd614cc | 926 | #endif |
d6d808f3 | 927 | |
3aed4dca FD |
928 | int lttng_event_add_callsite(struct lttng_event *event, |
929 | struct lttng_kernel_event_callsite *callsite); | |
e33fc900 | 930 | |
149b9a9d YB |
931 | #ifdef CONFIG_UPROBES |
932 | int lttng_uprobes_register(const char *name, | |
3aed4dca FD |
933 | int fd, struct lttng_event *event); |
934 | int lttng_uprobes_add_callsite(struct lttng_event *event, | |
935 | struct lttng_kernel_event_callsite *callsite); | |
149b9a9d YB |
936 | void lttng_uprobes_unregister(struct lttng_event *event); |
937 | void lttng_uprobes_destroy_private(struct lttng_event *event); | |
938 | #else | |
939 | static inline | |
940 | int lttng_uprobes_register(const char *name, | |
3aed4dca FD |
941 | int fd, struct lttng_event *event) |
942 | { | |
943 | return -ENOSYS; | |
944 | } | |
945 | ||
946 | static inline | |
947 | int lttng_uprobes_add_callsite(struct lttng_event *event, | |
e33fc900 | 948 | struct lttng_kernel_event_callsite *callsite) |
149b9a9d YB |
949 | { |
950 | return -ENOSYS; | |
951 | } | |
952 | ||
953 | static inline | |
954 | void lttng_uprobes_unregister(struct lttng_event *event) | |
955 | { | |
956 | } | |
957 | ||
958 | static inline | |
959 | void lttng_uprobes_destroy_private(struct lttng_event *event) | |
960 | { | |
961 | } | |
962 | #endif | |
963 | ||
7371f44c MD |
964 | #ifdef CONFIG_KRETPROBES |
965 | int lttng_kretprobes_register(const char *name, | |
966 | const char *symbol_name, | |
967 | uint64_t offset, | |
968 | uint64_t addr, | |
a90917c3 MD |
969 | struct lttng_event *event_entry, |
970 | struct lttng_event *event_exit); | |
971 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
972 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
a0493bef MD |
973 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, |
974 | int enable); | |
7371f44c MD |
975 | #else |
976 | static inline | |
977 | int lttng_kretprobes_register(const char *name, | |
978 | const char *symbol_name, | |
979 | uint64_t offset, | |
980 | uint64_t addr, | |
a90917c3 MD |
981 | struct lttng_event *event_entry, |
982 | struct lttng_event *event_exit) | |
7371f44c MD |
983 | { |
984 | return -ENOSYS; | |
985 | } | |
986 | ||
987 | static inline | |
a90917c3 | 988 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
989 | { |
990 | } | |
991 | ||
992 | static inline | |
a90917c3 | 993 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
994 | { |
995 | } | |
a0493bef MD |
996 | |
997 | static inline | |
998 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, | |
999 | int enable) | |
1000 | { | |
1001 | return -ENOSYS; | |
1002 | } | |
7371f44c MD |
1003 | #endif |
1004 | ||
3db41b2c | 1005 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 1006 | |
271b6681 | 1007 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 1008 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 1009 | |
ef200626 | 1010 | #define TRACEPOINT_HAS_DATA_ARG |
ef200626 | 1011 | |
a90917c3 | 1012 | #endif /* _LTTNG_EVENTS_H */ |