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b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
9f36eaed | 2 | * |
2df37e95 | 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 | ||
3a523f5b | 13 | #include <linux/version.h> |
4e3c1b9b | 14 | #include <linux/list.h> |
d6d808f3 | 15 | #include <linux/kprobes.h> |
d83004aa | 16 | #include <linux/kref.h> |
41f229dc | 17 | #include <linux/uuid.h> |
149b9a9d | 18 | #include <wrapper/uprobes.h> |
2df37e95 MD |
19 | #include <lttng/cpuhotplug.h> |
20 | #include <lttng/tracer.h> | |
21 | #include <lttng/abi.h> | |
22 | #include <lttng/abi-old.h> | |
23 | #include <lttng/endian.h> | |
4e3c1b9b | 24 | |
06254b0f | 25 | #define lttng_is_signed_type(type) (((type)(-1)) < 0) |
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, | |
c0edae1d | 39 | atype_string, |
ceabb767 MD |
40 | atype_enum_nestable, |
41 | atype_array_nestable, | |
42 | atype_sequence_nestable, | |
43 | atype_struct_nestable, | |
44 | atype_variant_nestable, | |
c0edae1d MD |
45 | NR_ABSTRACT_TYPES, |
46 | }; | |
47 | ||
c0edae1d | 48 | enum lttng_string_encodings { |
e0a7a7c4 MD |
49 | lttng_encode_none = 0, |
50 | lttng_encode_UTF8 = 1, | |
51 | lttng_encode_ASCII = 2, | |
c0edae1d MD |
52 | NR_STRING_ENCODINGS, |
53 | }; | |
54 | ||
d83004aa JD |
55 | enum channel_type { |
56 | PER_CPU_CHANNEL, | |
57 | METADATA_CHANNEL, | |
58 | }; | |
59 | ||
141ddf28 MD |
60 | struct lttng_enum_value { |
61 | unsigned long long value; | |
62 | unsigned int signedness:1; | |
63 | }; | |
64 | ||
c0edae1d | 65 | struct lttng_enum_entry { |
141ddf28 | 66 | struct lttng_enum_value start, end; /* start and end are inclusive */ |
c0edae1d | 67 | const char *string; |
08ad1061 PP |
68 | struct { |
69 | unsigned int is_auto:1; | |
70 | } options; | |
c0edae1d MD |
71 | }; |
72 | ||
43803cf2 MD |
73 | #define __type_integer(_type, _size, _alignment, _signedness, \ |
74 | _byte_order, _base, _encoding) \ | |
c099397a MD |
75 | { \ |
76 | .atype = atype_integer, \ | |
ceabb767 | 77 | .u.integer = \ |
c099397a | 78 | { \ |
43803cf2 MD |
79 | .size = (_size) ? : sizeof(_type) * CHAR_BIT, \ |
80 | .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \ | |
81 | .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \ | |
82 | .reverse_byte_order = _byte_order != __BYTE_ORDER, \ | |
e0a7a7c4 | 83 | .base = _base, \ |
64c796d8 | 84 | .encoding = lttng_encode_##_encoding, \ |
c099397a MD |
85 | }, \ |
86 | } \ | |
87 | ||
88 | struct lttng_integer_type { | |
89 | unsigned int size; /* in bits */ | |
90 | unsigned short alignment; /* in bits */ | |
9cccf98a MD |
91 | unsigned int signedness:1, |
92 | reverse_byte_order:1; | |
e0a7a7c4 MD |
93 | unsigned int base; /* 2, 8, 10, 16, for pretty print */ |
94 | enum lttng_string_encodings encoding; | |
c099397a MD |
95 | }; |
96 | ||
c0edae1d MD |
97 | struct lttng_type { |
98 | enum abstract_types atype; | |
c0edae1d | 99 | union { |
ceabb767 | 100 | struct lttng_integer_type integer; |
c0edae1d | 101 | struct { |
ceabb767 MD |
102 | enum lttng_string_encodings encoding; |
103 | } string; | |
c0edae1d | 104 | struct { |
ceabb767 MD |
105 | const struct lttng_enum_desc *desc; /* Enumeration mapping */ |
106 | const struct lttng_type *container_type; | |
107 | } enum_nestable; | |
f513b2bf | 108 | struct { |
ceabb767 MD |
109 | const struct lttng_type *elem_type; |
110 | unsigned int length; /* Num. elems. */ | |
111 | unsigned int alignment; | |
112 | } array_nestable; | |
f513b2bf | 113 | struct { |
ceabb767 MD |
114 | const char *length_name; /* Length field name. */ |
115 | const struct lttng_type *elem_type; | |
116 | unsigned int alignment; /* Alignment before elements. */ | |
117 | } sequence_nestable; | |
f513b2bf | 118 | struct { |
ceabb767 MD |
119 | unsigned int nr_fields; |
120 | const struct lttng_event_field *fields; /* Array of fields. */ | |
121 | unsigned int alignment; | |
122 | } struct_nestable; | |
65c85aa6 MD |
123 | struct { |
124 | const char *tag_name; | |
ceabb767 MD |
125 | const struct lttng_event_field *choices; /* Array of fields. */ |
126 | unsigned int nr_choices; | |
127 | unsigned int alignment; | |
128 | } variant_nestable; | |
c0edae1d | 129 | } u; |
c099397a MD |
130 | }; |
131 | ||
141ddf28 | 132 | struct lttng_enum_desc { |
c099397a | 133 | const char *name; |
c099397a | 134 | const struct lttng_enum_entry *entries; |
141ddf28 | 135 | unsigned int nr_entries; |
c099397a | 136 | }; |
c0edae1d MD |
137 | |
138 | /* Event field description */ | |
139 | ||
140 | struct lttng_event_field { | |
141 | const char *name; | |
f17701fb | 142 | struct lttng_type type; |
f127e61e | 143 | unsigned int nowrite:1, /* do not write into trace */ |
ceabb767 MD |
144 | user:1, /* fetch from user-space */ |
145 | nofilter:1; /* do not consider for filter */ | |
c0edae1d MD |
146 | }; |
147 | ||
07dfc1d0 MD |
148 | union lttng_ctx_value { |
149 | int64_t s64; | |
150 | const char *str; | |
151 | double d; | |
152 | }; | |
153 | ||
2001023e MD |
154 | /* |
155 | * We need to keep this perf counter field separately from struct | |
156 | * lttng_ctx_field because cpu hotplug needs fixed-location addresses. | |
157 | */ | |
158 | struct lttng_perf_counter_field { | |
1e367326 MD |
159 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) |
160 | struct lttng_cpuhp_node cpuhp_prepare; | |
161 | struct lttng_cpuhp_node cpuhp_online; | |
162 | #else | |
2001023e MD |
163 | struct notifier_block nb; |
164 | int hp_enable; | |
1e367326 | 165 | #endif |
2001023e MD |
166 | struct perf_event_attr *attr; |
167 | struct perf_event **e; /* per-cpu array */ | |
168 | }; | |
169 | ||
79150a49 JD |
170 | struct lttng_probe_ctx { |
171 | struct lttng_event *event; | |
172 | uint8_t interruptible; | |
173 | }; | |
174 | ||
ba1f5986 | 175 | struct lttng_ctx_field { |
8070f5c0 | 176 | struct lttng_event_field event_field; |
f1676205 | 177 | size_t (*get_size)(size_t offset); |
1474c8e2 FG |
178 | size_t (*get_size_arg)(size_t offset, struct lttng_ctx_field *field, |
179 | struct lib_ring_buffer_ctx *ctx, | |
180 | struct lttng_channel *chan); | |
f1676205 MD |
181 | void (*record)(struct lttng_ctx_field *field, |
182 | struct lib_ring_buffer_ctx *ctx, | |
a90917c3 | 183 | struct lttng_channel *chan); |
07dfc1d0 | 184 | void (*get_value)(struct lttng_ctx_field *field, |
79150a49 | 185 | struct lttng_probe_ctx *lttng_probe_ctx, |
07dfc1d0 | 186 | union lttng_ctx_value *value); |
ba1f5986 | 187 | union { |
2001023e | 188 | struct lttng_perf_counter_field *perf_counter; |
ba1f5986 | 189 | } u; |
2dccf128 | 190 | void (*destroy)(struct lttng_ctx_field *field); |
3c1a57e8 MD |
191 | /* |
192 | * Private data to keep state between get_size and record. | |
193 | * User must perform its own synchronization to protect against | |
194 | * concurrent and reentrant contexts. | |
195 | */ | |
196 | void *priv; | |
ba1f5986 MD |
197 | }; |
198 | ||
199 | struct lttng_ctx { | |
833ad6a0 | 200 | struct lttng_ctx_field *fields; |
0d1a681e | 201 | unsigned int nr_fields; |
ba1f5986 | 202 | unsigned int allocated_fields; |
a9dd15da | 203 | size_t largest_align; /* in bytes */ |
0d1a681e MD |
204 | }; |
205 | ||
206 | struct lttng_event_desc { | |
a26a7e4f MD |
207 | const char *name; /* lttng-modules name */ |
208 | const char *kname; /* Linux kernel name (tracepoints) */ | |
c0edae1d | 209 | void *probe_callback; |
0d1a681e MD |
210 | const struct lttng_event_ctx *ctx; /* context */ |
211 | const struct lttng_event_field *fields; /* event payload */ | |
c0edae1d | 212 | unsigned int nr_fields; |
dc7f600a | 213 | struct module *owner; |
c0edae1d MD |
214 | }; |
215 | ||
85a9ca7f | 216 | struct lttng_probe_desc { |
3c997079 | 217 | const char *provider; |
f7bdf4db | 218 | const struct lttng_event_desc **event_desc; |
85a9ca7f MD |
219 | unsigned int nr_events; |
220 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
221 | struct list_head lazy_init_head; |
222 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
223 | }; |
224 | ||
7371f44c MD |
225 | struct lttng_krp; /* Kretprobe handling */ |
226 | ||
3c997079 MD |
227 | enum lttng_event_type { |
228 | LTTNG_TYPE_EVENT = 0, | |
229 | LTTNG_TYPE_ENABLER = 1, | |
230 | }; | |
231 | ||
07dfc1d0 MD |
232 | struct lttng_filter_bytecode_node { |
233 | struct list_head node; | |
234 | struct lttng_enabler *enabler; | |
235 | /* | |
236 | * struct lttng_kernel_filter_bytecode has var. sized array, must be | |
237 | * last field. | |
238 | */ | |
239 | struct lttng_kernel_filter_bytecode bc; | |
240 | }; | |
241 | ||
242 | /* | |
243 | * Filter return value masks. | |
244 | */ | |
245 | enum lttng_filter_ret { | |
246 | LTTNG_FILTER_DISCARD = 0, | |
247 | LTTNG_FILTER_RECORD_FLAG = (1ULL << 0), | |
248 | /* Other bits are kept for future use. */ | |
249 | }; | |
250 | ||
251 | struct lttng_bytecode_runtime { | |
252 | /* Associated bytecode */ | |
253 | struct lttng_filter_bytecode_node *bc; | |
79150a49 JD |
254 | uint64_t (*filter)(void *filter_data, struct lttng_probe_ctx *lttng_probe_ctx, |
255 | const char *filter_stack_data); | |
07dfc1d0 MD |
256 | int link_failed; |
257 | struct list_head node; /* list of bytecode runtime in event */ | |
3834b99f | 258 | struct lttng_event *event; |
07dfc1d0 MD |
259 | }; |
260 | ||
3c997079 MD |
261 | /* |
262 | * Objects in a linked-list of enablers, owned by an event. | |
263 | */ | |
264 | struct lttng_enabler_ref { | |
265 | struct list_head node; /* enabler ref list */ | |
266 | struct lttng_enabler *ref; /* backward ref */ | |
267 | }; | |
268 | ||
3aed4dca FD |
269 | struct lttng_uprobe_handler { |
270 | struct lttng_event *event; | |
271 | loff_t offset; | |
272 | struct uprobe_consumer up_consumer; | |
273 | struct list_head node; | |
274 | }; | |
275 | ||
badfe9f5 MD |
276 | enum lttng_syscall_entryexit { |
277 | LTTNG_SYSCALL_ENTRY, | |
278 | LTTNG_SYSCALL_EXIT, | |
279 | }; | |
280 | ||
281 | enum lttng_syscall_abi { | |
282 | LTTNG_SYSCALL_ABI_NATIVE, | |
283 | LTTNG_SYSCALL_ABI_COMPAT, | |
284 | }; | |
285 | ||
85a9ca7f | 286 | /* |
a90917c3 | 287 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
288 | * kept small. |
289 | */ | |
a90917c3 | 290 | struct lttng_event { |
3c997079 | 291 | enum lttng_event_type evtype; /* First field. */ |
85a9ca7f | 292 | unsigned int id; |
a90917c3 | 293 | struct lttng_channel *chan; |
e64957da | 294 | int enabled; |
d3dbe23c | 295 | const struct lttng_event_desc *desc; |
85a9ca7f | 296 | void *filter; |
f1676205 | 297 | struct lttng_ctx *ctx; |
38d024ae | 298 | enum lttng_kernel_instrumentation instrumentation; |
d6d808f3 MD |
299 | union { |
300 | struct { | |
301 | struct kprobe kp; | |
302 | char *symbol_name; | |
303 | } kprobe; | |
7371f44c MD |
304 | struct { |
305 | struct lttng_krp *lttng_krp; | |
306 | char *symbol_name; | |
307 | } kretprobe; | |
149b9a9d | 308 | struct { |
149b9a9d | 309 | struct inode *inode; |
3aed4dca | 310 | struct list_head head; |
149b9a9d | 311 | } uprobe; |
badfe9f5 MD |
312 | struct { |
313 | char *syscall_name; | |
314 | enum lttng_syscall_entryexit entryexit; | |
315 | enum lttng_syscall_abi abi; | |
316 | } syscall; | |
d6d808f3 | 317 | } u; |
3c997079 | 318 | struct list_head list; /* Event list in session */ |
9cccf98a | 319 | unsigned int metadata_dumped:1; |
3c997079 MD |
320 | |
321 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
322 | struct list_head enablers_ref_head; | |
323 | struct hlist_node hlist; /* session ht of events */ | |
324 | int registered; /* has reg'd tracepoint probe */ | |
07dfc1d0 MD |
325 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
326 | struct list_head bytecode_runtime_head; | |
327 | int has_enablers_without_bytecode; | |
3c997079 MD |
328 | }; |
329 | ||
3b861b22 FD |
330 | enum lttng_enabler_format_type { |
331 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
332 | LTTNG_ENABLER_FORMAT_NAME, | |
3c997079 MD |
333 | }; |
334 | ||
335 | /* | |
336 | * Enabler field, within whatever object is enabling an event. Target of | |
337 | * backward reference. | |
338 | */ | |
339 | struct lttng_enabler { | |
340 | enum lttng_event_type evtype; /* First field. */ | |
341 | ||
3b861b22 | 342 | enum lttng_enabler_format_type format_type; |
3c997079 MD |
343 | |
344 | struct list_head node; /* per-session list of enablers */ | |
07dfc1d0 MD |
345 | /* head list of struct lttng_ust_filter_bytecode_node */ |
346 | struct list_head filter_bytecode_head; | |
3c997079 MD |
347 | |
348 | struct lttng_kernel_event event_param; | |
349 | struct lttng_channel *chan; | |
2954b37c FD |
350 | /* |
351 | * Unused, but kept around to make it explicit that the tracer can do | |
352 | * it. | |
353 | */ | |
3c997079 MD |
354 | struct lttng_ctx *ctx; |
355 | unsigned int enabled:1; | |
85a9ca7f MD |
356 | }; |
357 | ||
a90917c3 | 358 | struct lttng_channel_ops { |
85a9ca7f | 359 | struct channel *(*channel_create)(const char *name, |
a90917c3 | 360 | struct lttng_channel *lttng_chan, |
85a9ca7f MD |
361 | void *buf_addr, |
362 | size_t subbuf_size, size_t num_subbuf, | |
363 | unsigned int switch_timer_interval, | |
364 | unsigned int read_timer_interval); | |
365 | void (*channel_destroy)(struct channel *chan); | |
366 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 367 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 368 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 369 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 370 | uint32_t event_id); |
85a9ca7f MD |
371 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
372 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
373 | size_t len); | |
4ea00e4f JD |
374 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
375 | const void *src, size_t len); | |
58aa5d24 MD |
376 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
377 | int c, size_t len); | |
16f78f3a MD |
378 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
379 | size_t len); | |
380 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
381 | const char __user *src, size_t len); | |
1ec3f75a MD |
382 | /* |
383 | * packet_avail_size returns the available size in the current | |
384 | * packet. Note that the size returned is only a hint, since it | |
385 | * may change due to concurrent writes. | |
386 | */ | |
387 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 388 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
389 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
390 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 391 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
392 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
393 | struct lib_ring_buffer *bufb, | |
394 | uint64_t *timestamp_begin); | |
395 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
396 | struct lib_ring_buffer *bufb, | |
397 | uint64_t *timestamp_end); | |
398 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
399 | struct lib_ring_buffer *bufb, | |
400 | uint64_t *events_discarded); | |
401 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
402 | struct lib_ring_buffer *bufb, | |
403 | uint64_t *content_size); | |
404 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
405 | struct lib_ring_buffer *bufb, | |
406 | uint64_t *packet_size); | |
407 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
408 | struct lib_ring_buffer *bufb, | |
409 | uint64_t *stream_id); | |
2348ca17 JD |
410 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
411 | struct lib_ring_buffer *bufb, | |
412 | uint64_t *ts); | |
5b3cf4f9 JD |
413 | int (*sequence_number) (const struct lib_ring_buffer_config *config, |
414 | struct lib_ring_buffer *bufb, | |
415 | uint64_t *seq); | |
5594698f JD |
416 | int (*instance_id) (const struct lib_ring_buffer_config *config, |
417 | struct lib_ring_buffer *bufb, | |
418 | uint64_t *id); | |
85a9ca7f MD |
419 | }; |
420 | ||
a90917c3 | 421 | struct lttng_transport { |
a33c9927 MD |
422 | char *name; |
423 | struct module *owner; | |
424 | struct list_head node; | |
a90917c3 | 425 | struct lttng_channel_ops ops; |
a33c9927 MD |
426 | }; |
427 | ||
80f87dd2 MD |
428 | struct lttng_syscall_filter; |
429 | ||
3c997079 MD |
430 | #define LTTNG_EVENT_HT_BITS 12 |
431 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
432 | ||
433 | struct lttng_event_ht { | |
434 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
435 | }; | |
436 | ||
a90917c3 | 437 | struct lttng_channel { |
c099397a | 438 | unsigned int id; |
85a9ca7f | 439 | struct channel *chan; /* Channel buffers */ |
e64957da | 440 | int enabled; |
f1676205 | 441 | struct lttng_ctx *ctx; |
85a9ca7f | 442 | /* Event ID management */ |
a90917c3 | 443 | struct lttng_session *session; |
85a9ca7f MD |
444 | struct file *file; /* File associated to channel */ |
445 | unsigned int free_event_id; /* Next event ID to allocate */ | |
446 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
447 | struct lttng_channel_ops *ops; |
448 | struct lttng_transport *transport; | |
449 | struct lttng_event **sc_table; /* for syscall tracing */ | |
450 | struct lttng_event **compat_sc_table; | |
5b7ac358 MD |
451 | struct lttng_event **sc_exit_table; /* for syscall exit tracing */ |
452 | struct lttng_event **compat_sc_exit_table; | |
a90917c3 MD |
453 | struct lttng_event *sc_unknown; /* for unknown syscalls */ |
454 | struct lttng_event *sc_compat_unknown; | |
5b7ac358 MD |
455 | struct lttng_event *sc_exit_unknown; |
456 | struct lttng_event *compat_sc_exit_unknown; | |
80f87dd2 | 457 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 458 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 459 | enum channel_type channel_type; |
badfe9f5 | 460 | int syscall_all; |
80f87dd2 MD |
461 | unsigned int metadata_dumped:1, |
462 | sys_enter_registered:1, | |
463 | sys_exit_registered:1, | |
3c997079 | 464 | tstate:1; /* Transient enable state */ |
85a9ca7f MD |
465 | }; |
466 | ||
d83004aa JD |
467 | struct lttng_metadata_stream { |
468 | void *priv; /* Ring buffer private data */ | |
469 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
470 | unsigned int metadata_in; /* Bytes read from the cache */ |
471 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
472 | int finalized; /* Has channel been finalized */ |
473 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
474 | struct list_head list; /* Stream list */ | |
b3b8072b | 475 | struct lttng_transport *transport; |
9616f0bf | 476 | uint64_t version; /* Current version of the metadata cache */ |
8b97fd42 | 477 | bool coherent; /* Stream in a coherent state */ |
d83004aa JD |
478 | }; |
479 | ||
114667d5 MD |
480 | #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 |
481 | ||
482 | struct lttng_dynamic_len_stack { | |
483 | size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE]; | |
484 | size_t offset; | |
485 | }; | |
486 | ||
487 | DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); | |
e0130fab MD |
488 | |
489 | /* | |
d1f652f8 | 490 | * struct lttng_id_tracker declared in header due to deferencing of *v |
e0130fab MD |
491 | * in RCU_INITIALIZER(v). |
492 | */ | |
d1f652f8 MD |
493 | #define LTTNG_ID_HASH_BITS 6 |
494 | #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) | |
e0130fab | 495 | |
d1f652f8 MD |
496 | enum tracker_type { |
497 | TRACKER_PID, | |
498 | TRACKER_VPID, | |
499 | TRACKER_UID, | |
500 | TRACKER_VUID, | |
501 | TRACKER_GID, | |
502 | TRACKER_VGID, | |
503 | ||
504 | TRACKER_UNKNOWN, | |
505 | }; | |
506 | ||
507 | struct lttng_id_tracker_rcu { | |
508 | struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; | |
509 | }; | |
510 | ||
511 | struct lttng_id_tracker { | |
512 | struct lttng_session *session; | |
513 | enum tracker_type tracker_type; | |
514 | struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */ | |
e0130fab MD |
515 | }; |
516 | ||
d1f652f8 | 517 | struct lttng_id_hash_node { |
7e6f9ef6 | 518 | struct hlist_node hlist; |
d1f652f8 | 519 | int id; |
7e6f9ef6 MD |
520 | }; |
521 | ||
a90917c3 | 522 | struct lttng_session { |
85a9ca7f | 523 | int active; /* Is trace session active ? */ |
8070f5c0 | 524 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
525 | struct file *file; /* File associated to session */ |
526 | struct list_head chan; /* Channel list head */ | |
527 | struct list_head events; /* Event list head */ | |
528 | struct list_head list; /* Session list */ | |
c099397a | 529 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 530 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 531 | struct lttng_metadata_cache *metadata_cache; |
d1f652f8 MD |
532 | struct lttng_id_tracker pid_tracker; |
533 | struct lttng_id_tracker vpid_tracker; | |
534 | struct lttng_id_tracker uid_tracker; | |
535 | struct lttng_id_tracker vuid_tracker; | |
536 | struct lttng_id_tracker gid_tracker; | |
537 | struct lttng_id_tracker vgid_tracker; | |
3c997079 MD |
538 | unsigned int metadata_dumped:1, |
539 | tstate:1; /* Transient enable state */ | |
540 | /* List of enablers */ | |
541 | struct list_head enablers_head; | |
542 | /* Hash table of events */ | |
543 | struct lttng_event_ht events_ht; | |
7f859fbf | 544 | char name[LTTNG_KERNEL_SESSION_NAME_LEN]; |
1c88f269 | 545 | char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN]; |
85a9ca7f MD |
546 | }; |
547 | ||
d83004aa JD |
548 | struct lttng_metadata_cache { |
549 | char *data; /* Metadata cache */ | |
550 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
551 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
3e75e2a7 | 552 | atomic_t producing; /* Metadata being produced (incomplete) */ |
d83004aa JD |
553 | struct kref refcount; /* Metadata cache usage */ |
554 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 555 | uuid_le uuid; /* Trace session unique ID (copy) */ |
9616f0bf JD |
556 | struct mutex lock; /* Produce/consume lock */ |
557 | uint64_t version; /* Current version of the metadata */ | |
d83004aa JD |
558 | }; |
559 | ||
3c997079 MD |
560 | void lttng_lock_sessions(void); |
561 | void lttng_unlock_sessions(void); | |
562 | ||
563 | struct list_head *lttng_get_probe_list_head(void); | |
564 | ||
3b861b22 | 565 | struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_format_type format_type, |
3c997079 MD |
566 | struct lttng_kernel_event *event_param, |
567 | struct lttng_channel *chan); | |
568 | ||
569 | int lttng_enabler_enable(struct lttng_enabler *enabler); | |
570 | int lttng_enabler_disable(struct lttng_enabler *enabler); | |
571 | int lttng_fix_pending_events(void); | |
572 | int lttng_session_active(void); | |
573 | ||
a90917c3 MD |
574 | struct lttng_session *lttng_session_create(void); |
575 | int lttng_session_enable(struct lttng_session *session); | |
576 | int lttng_session_disable(struct lttng_session *session); | |
577 | void lttng_session_destroy(struct lttng_session *session); | |
9616f0bf | 578 | int lttng_session_metadata_regenerate(struct lttng_session *session); |
601252cf | 579 | int lttng_session_statedump(struct lttng_session *session); |
d83004aa | 580 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 581 | |
a90917c3 | 582 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
583 | const char *transport_name, |
584 | void *buf_addr, | |
585 | size_t subbuf_size, size_t num_subbuf, | |
586 | unsigned int switch_timer_interval, | |
d83004aa JD |
587 | unsigned int read_timer_interval, |
588 | enum channel_type channel_type); | |
a90917c3 | 589 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
590 | int overwrite, void *buf_addr, |
591 | size_t subbuf_size, size_t num_subbuf, | |
592 | unsigned int switch_timer_interval, | |
593 | unsigned int read_timer_interval); | |
4e3c1b9b | 594 | |
d83004aa | 595 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 596 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
3c997079 MD |
597 | struct lttng_kernel_event *event_param, |
598 | void *filter, | |
599 | const struct lttng_event_desc *event_desc, | |
600 | enum lttng_kernel_instrumentation itype); | |
33a39a3c MD |
601 | struct lttng_event *_lttng_event_create(struct lttng_channel *chan, |
602 | struct lttng_kernel_event *event_param, | |
603 | void *filter, | |
604 | const struct lttng_event_desc *event_desc, | |
605 | enum lttng_kernel_instrumentation itype); | |
6dccd6c1 JD |
606 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
607 | struct lttng_kernel_old_event *old_event_param, | |
608 | void *filter, | |
609 | const struct lttng_event_desc *internal_desc); | |
c0e31d2e | 610 | |
a90917c3 MD |
611 | int lttng_channel_enable(struct lttng_channel *channel); |
612 | int lttng_channel_disable(struct lttng_channel *channel); | |
613 | int lttng_event_enable(struct lttng_event *event); | |
614 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 615 | |
a90917c3 MD |
616 | void lttng_transport_register(struct lttng_transport *transport); |
617 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 618 | |
360f38ea | 619 | void synchronize_trace(void); |
80996790 | 620 | int lttng_abi_init(void); |
6dccd6c1 | 621 | int lttng_abi_compat_old_init(void); |
80996790 | 622 | void lttng_abi_exit(void); |
6dccd6c1 | 623 | void lttng_abi_compat_old_exit(void); |
1c25284c | 624 | |
a90917c3 MD |
625 | int lttng_probe_register(struct lttng_probe_desc *desc); |
626 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
627 | const struct lttng_event_desc *lttng_event_get(const char *name); | |
628 | void lttng_event_put(const struct lttng_event_desc *desc); | |
629 | int lttng_probes_init(void); | |
630 | void lttng_probes_exit(void); | |
1ec65de1 | 631 | |
b3b8072b | 632 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
8b97fd42 | 633 | struct channel *chan, bool *coherent); |
d83004aa | 634 | |
d1f652f8 MD |
635 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); |
636 | int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); | |
637 | void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); | |
638 | bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id); | |
639 | int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); | |
640 | int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); | |
e0130fab | 641 | |
d1f652f8 MD |
642 | int lttng_session_track_id(struct lttng_session *session, |
643 | enum tracker_type tracker_type, int id); | |
644 | int lttng_session_untrack_id(struct lttng_session *session, | |
645 | enum tracker_type tracker_type, int id); | |
e0130fab | 646 | |
d1f652f8 MD |
647 | int lttng_session_list_tracker_ids(struct lttng_session *session, |
648 | enum tracker_type tracker_type); | |
7e6f9ef6 | 649 | |
2754583e MD |
650 | void lttng_clock_ref(void); |
651 | void lttng_clock_unref(void); | |
652 | ||
3a523f5b | 653 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a90917c3 MD |
654 | int lttng_syscalls_register(struct lttng_channel *chan, void *filter); |
655 | int lttng_syscalls_unregister(struct lttng_channel *chan); | |
badfe9f5 | 656 | int lttng_syscalls_destroy(struct lttng_channel *chan); |
80f87dd2 | 657 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
badfe9f5 | 658 | struct lttng_event *event); |
80f87dd2 | 659 | int lttng_syscall_filter_disable(struct lttng_channel *chan, |
badfe9f5 | 660 | struct lttng_event *event); |
12e579db MD |
661 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
662 | struct lttng_kernel_syscall_mask __user *usyscall_mask); | |
1ec65de1 | 663 | #else |
a90917c3 | 664 | static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter) |
1ec65de1 MD |
665 | { |
666 | return -ENOSYS; | |
667 | } | |
668 | ||
a90917c3 | 669 | static inline int lttng_syscalls_unregister(struct lttng_channel *chan) |
1ec65de1 MD |
670 | { |
671 | return 0; | |
672 | } | |
80f87dd2 | 673 | |
badfe9f5 MD |
674 | static inline int lttng_syscalls_destroy(struct lttng_channel *chan) |
675 | { | |
676 | return 0; | |
677 | } | |
678 | ||
f127e61e | 679 | static inline int lttng_syscall_filter_enable(struct lttng_channel *chan, |
badfe9f5 | 680 | struct lttng_event *event); |
80f87dd2 MD |
681 | { |
682 | return -ENOSYS; | |
683 | } | |
684 | ||
f127e61e | 685 | static inline int lttng_syscall_filter_disable(struct lttng_channel *chan, |
badfe9f5 | 686 | struct lttng_event *event); |
80f87dd2 MD |
687 | { |
688 | return -ENOSYS; | |
689 | } | |
12e579db | 690 | |
f127e61e | 691 | static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, |
12e579db MD |
692 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
693 | { | |
694 | return -ENOSYS; | |
695 | } | |
1ec65de1 MD |
696 | #endif |
697 | ||
07dfc1d0 MD |
698 | void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); |
699 | int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler, | |
700 | struct lttng_kernel_filter_bytecode __user *bytecode); | |
f127e61e MD |
701 | void lttng_enabler_event_link_bytecode(struct lttng_event *event, |
702 | struct lttng_enabler *enabler); | |
07dfc1d0 | 703 | |
114667d5 MD |
704 | int lttng_probes_init(void); |
705 | ||
07dfc1d0 MD |
706 | extern struct lttng_ctx *lttng_static_ctx; |
707 | ||
708 | int lttng_context_init(void); | |
709 | void lttng_context_exit(void); | |
2dccf128 | 710 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
c02eb859 MD |
711 | ssize_t lttng_append_context_index(struct lttng_ctx **ctx_p); |
712 | struct lttng_ctx_field *lttng_get_context_field_from_index(struct lttng_ctx *ctx, | |
713 | size_t index); | |
a9dd15da | 714 | void lttng_context_update(struct lttng_ctx *ctx); |
44252f0f | 715 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
07dfc1d0 | 716 | int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
717 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
718 | struct lttng_ctx_field *field); | |
c02eb859 | 719 | void lttng_remove_context_field_index(struct lttng_ctx **ctx_p, size_t index); |
2dccf128 | 720 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 721 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
b3699d90 | 722 | int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 723 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 724 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 725 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
726 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
727 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
728 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
729 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
730 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 731 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
79150a49 JD |
732 | int lttng_add_interruptible_to_ctx(struct lttng_ctx **ctx); |
733 | int lttng_add_need_reschedule_to_ctx(struct lttng_ctx **ctx); | |
734 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
735 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx); | |
736 | #else | |
737 | static inline | |
738 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx) | |
739 | { | |
740 | return -ENOSYS; | |
741 | } | |
742 | #endif | |
743 | #ifdef CONFIG_PREEMPT_RT_FULL | |
744 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx); | |
745 | #else | |
746 | static inline | |
747 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx) | |
748 | { | |
749 | return -ENOSYS; | |
750 | } | |
751 | #endif | |
2fa2d39a FG |
752 | |
753 | int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type); | |
754 | ||
a6cf40a4 MJ |
755 | #if defined(CONFIG_CGROUPS) && \ |
756 | ((LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)) || \ | |
757 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) | |
758 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); | |
759 | #else | |
760 | static inline | |
761 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx) | |
762 | { | |
763 | return -ENOSYS; | |
764 | } | |
765 | #endif | |
766 | ||
767 | #if defined(CONFIG_IPC_NS) && \ | |
768 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
769 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); | |
770 | #else | |
771 | static inline | |
772 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx) | |
773 | { | |
774 | return -ENOSYS; | |
775 | } | |
776 | #endif | |
777 | ||
778 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
779 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
780 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); | |
781 | #else | |
782 | static inline | |
783 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx) | |
784 | { | |
785 | return -ENOSYS; | |
786 | } | |
787 | #endif | |
788 | ||
789 | #if defined(CONFIG_NET_NS) && \ | |
790 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
791 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); | |
792 | #else | |
793 | static inline | |
794 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx) | |
795 | { | |
796 | return -ENOSYS; | |
797 | } | |
798 | #endif | |
799 | ||
800 | #if defined(CONFIG_PID_NS) && \ | |
801 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
802 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); | |
803 | #else | |
804 | static inline | |
805 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx) | |
806 | { | |
807 | return -ENOSYS; | |
808 | } | |
809 | #endif | |
810 | ||
811 | #if defined(CONFIG_USER_NS) && \ | |
812 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
813 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); | |
814 | #else | |
815 | static inline | |
816 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx) | |
817 | { | |
818 | return -ENOSYS; | |
819 | } | |
820 | #endif | |
821 | ||
822 | #if defined(CONFIG_UTS_NS) && \ | |
823 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
824 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); | |
825 | #else | |
826 | static inline | |
827 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx) | |
828 | { | |
829 | return -ENOSYS; | |
830 | } | |
831 | #endif | |
832 | ||
876e2e92 MJ |
833 | #if defined(CONFIG_TIME_NS) && \ |
834 | (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) | |
835 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx); | |
836 | #else | |
837 | static inline | |
838 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx) | |
839 | { | |
840 | return -ENOSYS; | |
841 | } | |
842 | #endif | |
843 | ||
dc923e75 MJ |
844 | int lttng_add_uid_to_ctx(struct lttng_ctx **ctx); |
845 | int lttng_add_euid_to_ctx(struct lttng_ctx **ctx); | |
846 | int lttng_add_suid_to_ctx(struct lttng_ctx **ctx); | |
847 | int lttng_add_gid_to_ctx(struct lttng_ctx **ctx); | |
848 | int lttng_add_egid_to_ctx(struct lttng_ctx **ctx); | |
849 | int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx); | |
850 | int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx); | |
851 | int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx); | |
852 | int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx); | |
853 | int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx); | |
854 | int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx); | |
855 | int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx); | |
856 | ||
8a3af9ee | 857 | #if defined(CONFIG_PERF_EVENTS) |
c24a0d71 MD |
858 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
859 | uint64_t config, | |
860 | const char *name, | |
861 | struct lttng_ctx **ctx); | |
1e367326 MD |
862 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, |
863 | struct lttng_cpuhp_node *node); | |
864 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
865 | struct lttng_cpuhp_node *node); | |
1d443b34 MD |
866 | #else |
867 | static inline | |
868 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
869 | uint64_t config, | |
870 | const char *name, | |
871 | struct lttng_ctx **ctx) | |
872 | { | |
873 | return -ENOSYS; | |
874 | } | |
1e367326 MD |
875 | static inline |
876 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
877 | struct lttng_cpuhp_node *node) | |
878 | { | |
879 | return 0; | |
880 | } | |
881 | static inline | |
882 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
883 | struct lttng_cpuhp_node *node) | |
884 | { | |
885 | return 0; | |
886 | } | |
1d443b34 | 887 | #endif |
02119ee5 | 888 | |
0c956676 MD |
889 | int lttng_logger_init(void); |
890 | void lttng_logger_exit(void); | |
891 | ||
c337ddc2 MD |
892 | extern int lttng_statedump_start(struct lttng_session *session); |
893 | ||
acd614cc | 894 | #ifdef CONFIG_KPROBES |
f17701fb MD |
895 | int lttng_kprobes_register(const char *name, |
896 | const char *symbol_name, | |
897 | uint64_t offset, | |
898 | uint64_t addr, | |
a90917c3 MD |
899 | struct lttng_event *event); |
900 | void lttng_kprobes_unregister(struct lttng_event *event); | |
901 | void lttng_kprobes_destroy_private(struct lttng_event *event); | |
acd614cc MD |
902 | #else |
903 | static inline | |
904 | int lttng_kprobes_register(const char *name, | |
905 | const char *symbol_name, | |
906 | uint64_t offset, | |
907 | uint64_t addr, | |
a90917c3 | 908 | struct lttng_event *event) |
acd614cc MD |
909 | { |
910 | return -ENOSYS; | |
911 | } | |
912 | ||
25f53c39 | 913 | static inline |
a90917c3 | 914 | void lttng_kprobes_unregister(struct lttng_event *event) |
acd614cc MD |
915 | { |
916 | } | |
edeb3137 MD |
917 | |
918 | static inline | |
a90917c3 | 919 | void lttng_kprobes_destroy_private(struct lttng_event *event) |
edeb3137 MD |
920 | { |
921 | } | |
acd614cc | 922 | #endif |
d6d808f3 | 923 | |
3aed4dca FD |
924 | int lttng_event_add_callsite(struct lttng_event *event, |
925 | struct lttng_kernel_event_callsite *callsite); | |
e33fc900 | 926 | |
149b9a9d YB |
927 | #ifdef CONFIG_UPROBES |
928 | int lttng_uprobes_register(const char *name, | |
3aed4dca FD |
929 | int fd, struct lttng_event *event); |
930 | int lttng_uprobes_add_callsite(struct lttng_event *event, | |
931 | struct lttng_kernel_event_callsite *callsite); | |
149b9a9d YB |
932 | void lttng_uprobes_unregister(struct lttng_event *event); |
933 | void lttng_uprobes_destroy_private(struct lttng_event *event); | |
934 | #else | |
935 | static inline | |
936 | int lttng_uprobes_register(const char *name, | |
3aed4dca FD |
937 | int fd, struct lttng_event *event) |
938 | { | |
939 | return -ENOSYS; | |
940 | } | |
941 | ||
942 | static inline | |
943 | int lttng_uprobes_add_callsite(struct lttng_event *event, | |
e33fc900 | 944 | struct lttng_kernel_event_callsite *callsite) |
149b9a9d YB |
945 | { |
946 | return -ENOSYS; | |
947 | } | |
948 | ||
949 | static inline | |
950 | void lttng_uprobes_unregister(struct lttng_event *event) | |
951 | { | |
952 | } | |
953 | ||
954 | static inline | |
955 | void lttng_uprobes_destroy_private(struct lttng_event *event) | |
956 | { | |
957 | } | |
958 | #endif | |
959 | ||
7371f44c MD |
960 | #ifdef CONFIG_KRETPROBES |
961 | int lttng_kretprobes_register(const char *name, | |
962 | const char *symbol_name, | |
963 | uint64_t offset, | |
964 | uint64_t addr, | |
a90917c3 MD |
965 | struct lttng_event *event_entry, |
966 | struct lttng_event *event_exit); | |
967 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
968 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
a0493bef MD |
969 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, |
970 | int enable); | |
7371f44c MD |
971 | #else |
972 | static inline | |
973 | int lttng_kretprobes_register(const char *name, | |
974 | const char *symbol_name, | |
975 | uint64_t offset, | |
976 | uint64_t addr, | |
a90917c3 MD |
977 | struct lttng_event *event_entry, |
978 | struct lttng_event *event_exit) | |
7371f44c MD |
979 | { |
980 | return -ENOSYS; | |
981 | } | |
982 | ||
983 | static inline | |
a90917c3 | 984 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
985 | { |
986 | } | |
987 | ||
988 | static inline | |
a90917c3 | 989 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
990 | { |
991 | } | |
a0493bef MD |
992 | |
993 | static inline | |
994 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, | |
995 | int enable) | |
996 | { | |
997 | return -ENOSYS; | |
998 | } | |
7371f44c MD |
999 | #endif |
1000 | ||
3db41b2c | 1001 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 1002 | |
271b6681 | 1003 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 1004 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 1005 | |
ef200626 | 1006 | #define TRACEPOINT_HAS_DATA_ARG |
ef200626 | 1007 | |
ceabb767 MD |
1008 | static inline bool lttng_is_bytewise_integer(const struct lttng_type *type) |
1009 | { | |
1010 | if (type->atype != atype_integer) | |
1011 | return false; | |
1012 | switch (type->u.integer.size) { | |
1013 | case 8: /* Fall-through. */ | |
1014 | case 16: /* Fall-through. */ | |
1015 | case 32: /* Fall-through. */ | |
1016 | case 64: | |
1017 | break; | |
1018 | default: | |
1019 | return false; | |
1020 | } | |
1021 | return true; | |
1022 | } | |
1023 | ||
a90917c3 | 1024 | #endif /* _LTTNG_EVENTS_H */ |