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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; | |
350 | struct lttng_ctx *ctx; | |
351 | unsigned int enabled:1; | |
85a9ca7f MD |
352 | }; |
353 | ||
a90917c3 | 354 | struct lttng_channel_ops { |
85a9ca7f | 355 | struct channel *(*channel_create)(const char *name, |
a90917c3 | 356 | struct lttng_channel *lttng_chan, |
85a9ca7f MD |
357 | void *buf_addr, |
358 | size_t subbuf_size, size_t num_subbuf, | |
359 | unsigned int switch_timer_interval, | |
360 | unsigned int read_timer_interval); | |
361 | void (*channel_destroy)(struct channel *chan); | |
362 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 363 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 364 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 365 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 366 | uint32_t event_id); |
85a9ca7f MD |
367 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
368 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
369 | size_t len); | |
4ea00e4f JD |
370 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
371 | const void *src, size_t len); | |
58aa5d24 MD |
372 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
373 | int c, size_t len); | |
16f78f3a MD |
374 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
375 | size_t len); | |
376 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
377 | const char __user *src, size_t len); | |
1ec3f75a MD |
378 | /* |
379 | * packet_avail_size returns the available size in the current | |
380 | * packet. Note that the size returned is only a hint, since it | |
381 | * may change due to concurrent writes. | |
382 | */ | |
383 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 384 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
385 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
386 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 387 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
388 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
389 | struct lib_ring_buffer *bufb, | |
390 | uint64_t *timestamp_begin); | |
391 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
392 | struct lib_ring_buffer *bufb, | |
393 | uint64_t *timestamp_end); | |
394 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
395 | struct lib_ring_buffer *bufb, | |
396 | uint64_t *events_discarded); | |
397 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
398 | struct lib_ring_buffer *bufb, | |
399 | uint64_t *content_size); | |
400 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
401 | struct lib_ring_buffer *bufb, | |
402 | uint64_t *packet_size); | |
403 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
404 | struct lib_ring_buffer *bufb, | |
405 | uint64_t *stream_id); | |
2348ca17 JD |
406 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
407 | struct lib_ring_buffer *bufb, | |
408 | uint64_t *ts); | |
5b3cf4f9 JD |
409 | int (*sequence_number) (const struct lib_ring_buffer_config *config, |
410 | struct lib_ring_buffer *bufb, | |
411 | uint64_t *seq); | |
5594698f JD |
412 | int (*instance_id) (const struct lib_ring_buffer_config *config, |
413 | struct lib_ring_buffer *bufb, | |
414 | uint64_t *id); | |
85a9ca7f MD |
415 | }; |
416 | ||
a90917c3 | 417 | struct lttng_transport { |
a33c9927 MD |
418 | char *name; |
419 | struct module *owner; | |
420 | struct list_head node; | |
a90917c3 | 421 | struct lttng_channel_ops ops; |
a33c9927 MD |
422 | }; |
423 | ||
80f87dd2 MD |
424 | struct lttng_syscall_filter; |
425 | ||
3c997079 MD |
426 | #define LTTNG_EVENT_HT_BITS 12 |
427 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
428 | ||
429 | struct lttng_event_ht { | |
430 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
431 | }; | |
432 | ||
a90917c3 | 433 | struct lttng_channel { |
c099397a | 434 | unsigned int id; |
85a9ca7f | 435 | struct channel *chan; /* Channel buffers */ |
e64957da | 436 | int enabled; |
f1676205 | 437 | struct lttng_ctx *ctx; |
85a9ca7f | 438 | /* Event ID management */ |
a90917c3 | 439 | struct lttng_session *session; |
85a9ca7f MD |
440 | struct file *file; /* File associated to channel */ |
441 | unsigned int free_event_id; /* Next event ID to allocate */ | |
442 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
443 | struct lttng_channel_ops *ops; |
444 | struct lttng_transport *transport; | |
445 | struct lttng_event **sc_table; /* for syscall tracing */ | |
446 | struct lttng_event **compat_sc_table; | |
5b7ac358 MD |
447 | struct lttng_event **sc_exit_table; /* for syscall exit tracing */ |
448 | struct lttng_event **compat_sc_exit_table; | |
a90917c3 MD |
449 | struct lttng_event *sc_unknown; /* for unknown syscalls */ |
450 | struct lttng_event *sc_compat_unknown; | |
5b7ac358 MD |
451 | struct lttng_event *sc_exit_unknown; |
452 | struct lttng_event *compat_sc_exit_unknown; | |
80f87dd2 | 453 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 454 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 455 | enum channel_type channel_type; |
badfe9f5 | 456 | int syscall_all; |
80f87dd2 MD |
457 | unsigned int metadata_dumped:1, |
458 | sys_enter_registered:1, | |
459 | sys_exit_registered:1, | |
3c997079 | 460 | tstate:1; /* Transient enable state */ |
85a9ca7f MD |
461 | }; |
462 | ||
d83004aa JD |
463 | struct lttng_metadata_stream { |
464 | void *priv; /* Ring buffer private data */ | |
465 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
466 | unsigned int metadata_in; /* Bytes read from the cache */ |
467 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
468 | int finalized; /* Has channel been finalized */ |
469 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
470 | struct list_head list; /* Stream list */ | |
b3b8072b | 471 | struct lttng_transport *transport; |
9616f0bf | 472 | uint64_t version; /* Current version of the metadata cache */ |
8b97fd42 | 473 | bool coherent; /* Stream in a coherent state */ |
d83004aa JD |
474 | }; |
475 | ||
114667d5 MD |
476 | #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 |
477 | ||
478 | struct lttng_dynamic_len_stack { | |
479 | size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE]; | |
480 | size_t offset; | |
481 | }; | |
482 | ||
483 | DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); | |
e0130fab MD |
484 | |
485 | /* | |
d1f652f8 | 486 | * struct lttng_id_tracker declared in header due to deferencing of *v |
e0130fab MD |
487 | * in RCU_INITIALIZER(v). |
488 | */ | |
d1f652f8 MD |
489 | #define LTTNG_ID_HASH_BITS 6 |
490 | #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) | |
e0130fab | 491 | |
d1f652f8 MD |
492 | enum tracker_type { |
493 | TRACKER_PID, | |
494 | TRACKER_VPID, | |
495 | TRACKER_UID, | |
496 | TRACKER_VUID, | |
497 | TRACKER_GID, | |
498 | TRACKER_VGID, | |
499 | ||
500 | TRACKER_UNKNOWN, | |
501 | }; | |
502 | ||
503 | struct lttng_id_tracker_rcu { | |
504 | struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; | |
505 | }; | |
506 | ||
507 | struct lttng_id_tracker { | |
508 | struct lttng_session *session; | |
509 | enum tracker_type tracker_type; | |
510 | struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */ | |
e0130fab MD |
511 | }; |
512 | ||
d1f652f8 | 513 | struct lttng_id_hash_node { |
7e6f9ef6 | 514 | struct hlist_node hlist; |
d1f652f8 | 515 | int id; |
7e6f9ef6 MD |
516 | }; |
517 | ||
a90917c3 | 518 | struct lttng_session { |
85a9ca7f | 519 | int active; /* Is trace session active ? */ |
8070f5c0 | 520 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
521 | struct file *file; /* File associated to session */ |
522 | struct list_head chan; /* Channel list head */ | |
523 | struct list_head events; /* Event list head */ | |
524 | struct list_head list; /* Session list */ | |
c099397a | 525 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 526 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 527 | struct lttng_metadata_cache *metadata_cache; |
d1f652f8 MD |
528 | struct lttng_id_tracker pid_tracker; |
529 | struct lttng_id_tracker vpid_tracker; | |
530 | struct lttng_id_tracker uid_tracker; | |
531 | struct lttng_id_tracker vuid_tracker; | |
532 | struct lttng_id_tracker gid_tracker; | |
533 | struct lttng_id_tracker vgid_tracker; | |
3c997079 MD |
534 | unsigned int metadata_dumped:1, |
535 | tstate:1; /* Transient enable state */ | |
536 | /* List of enablers */ | |
537 | struct list_head enablers_head; | |
538 | /* Hash table of events */ | |
539 | struct lttng_event_ht events_ht; | |
7f859fbf | 540 | char name[LTTNG_KERNEL_SESSION_NAME_LEN]; |
1c88f269 | 541 | char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN]; |
85a9ca7f MD |
542 | }; |
543 | ||
d83004aa JD |
544 | struct lttng_metadata_cache { |
545 | char *data; /* Metadata cache */ | |
546 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
547 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
3e75e2a7 | 548 | atomic_t producing; /* Metadata being produced (incomplete) */ |
d83004aa JD |
549 | struct kref refcount; /* Metadata cache usage */ |
550 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 551 | uuid_le uuid; /* Trace session unique ID (copy) */ |
9616f0bf JD |
552 | struct mutex lock; /* Produce/consume lock */ |
553 | uint64_t version; /* Current version of the metadata */ | |
d83004aa JD |
554 | }; |
555 | ||
3c997079 MD |
556 | void lttng_lock_sessions(void); |
557 | void lttng_unlock_sessions(void); | |
558 | ||
559 | struct list_head *lttng_get_probe_list_head(void); | |
560 | ||
3b861b22 | 561 | struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_format_type format_type, |
3c997079 MD |
562 | struct lttng_kernel_event *event_param, |
563 | struct lttng_channel *chan); | |
564 | ||
565 | int lttng_enabler_enable(struct lttng_enabler *enabler); | |
566 | int lttng_enabler_disable(struct lttng_enabler *enabler); | |
567 | int lttng_fix_pending_events(void); | |
568 | int lttng_session_active(void); | |
569 | ||
a90917c3 MD |
570 | struct lttng_session *lttng_session_create(void); |
571 | int lttng_session_enable(struct lttng_session *session); | |
572 | int lttng_session_disable(struct lttng_session *session); | |
573 | void lttng_session_destroy(struct lttng_session *session); | |
9616f0bf | 574 | int lttng_session_metadata_regenerate(struct lttng_session *session); |
601252cf | 575 | int lttng_session_statedump(struct lttng_session *session); |
d83004aa | 576 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 577 | |
a90917c3 | 578 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
579 | const char *transport_name, |
580 | void *buf_addr, | |
581 | size_t subbuf_size, size_t num_subbuf, | |
582 | unsigned int switch_timer_interval, | |
d83004aa JD |
583 | unsigned int read_timer_interval, |
584 | enum channel_type channel_type); | |
a90917c3 | 585 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
586 | int overwrite, void *buf_addr, |
587 | size_t subbuf_size, size_t num_subbuf, | |
588 | unsigned int switch_timer_interval, | |
589 | unsigned int read_timer_interval); | |
4e3c1b9b | 590 | |
d83004aa | 591 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 592 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
3c997079 MD |
593 | struct lttng_kernel_event *event_param, |
594 | void *filter, | |
595 | const struct lttng_event_desc *event_desc, | |
596 | enum lttng_kernel_instrumentation itype); | |
33a39a3c MD |
597 | struct lttng_event *_lttng_event_create(struct lttng_channel *chan, |
598 | struct lttng_kernel_event *event_param, | |
599 | void *filter, | |
600 | const struct lttng_event_desc *event_desc, | |
601 | enum lttng_kernel_instrumentation itype); | |
6dccd6c1 JD |
602 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
603 | struct lttng_kernel_old_event *old_event_param, | |
604 | void *filter, | |
605 | const struct lttng_event_desc *internal_desc); | |
c0e31d2e | 606 | |
a90917c3 MD |
607 | int lttng_channel_enable(struct lttng_channel *channel); |
608 | int lttng_channel_disable(struct lttng_channel *channel); | |
609 | int lttng_event_enable(struct lttng_event *event); | |
610 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 611 | |
a90917c3 MD |
612 | void lttng_transport_register(struct lttng_transport *transport); |
613 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 614 | |
360f38ea | 615 | void synchronize_trace(void); |
80996790 | 616 | int lttng_abi_init(void); |
6dccd6c1 | 617 | int lttng_abi_compat_old_init(void); |
80996790 | 618 | void lttng_abi_exit(void); |
6dccd6c1 | 619 | void lttng_abi_compat_old_exit(void); |
1c25284c | 620 | |
a90917c3 MD |
621 | int lttng_probe_register(struct lttng_probe_desc *desc); |
622 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
623 | const struct lttng_event_desc *lttng_event_get(const char *name); | |
624 | void lttng_event_put(const struct lttng_event_desc *desc); | |
625 | int lttng_probes_init(void); | |
626 | void lttng_probes_exit(void); | |
1ec65de1 | 627 | |
b3b8072b | 628 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
8b97fd42 | 629 | struct channel *chan, bool *coherent); |
d83004aa | 630 | |
d1f652f8 MD |
631 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); |
632 | int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); | |
633 | void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); | |
634 | bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id); | |
635 | int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); | |
636 | int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); | |
e0130fab | 637 | |
d1f652f8 MD |
638 | int lttng_session_track_id(struct lttng_session *session, |
639 | enum tracker_type tracker_type, int id); | |
640 | int lttng_session_untrack_id(struct lttng_session *session, | |
641 | enum tracker_type tracker_type, int id); | |
e0130fab | 642 | |
d1f652f8 MD |
643 | int lttng_session_list_tracker_ids(struct lttng_session *session, |
644 | enum tracker_type tracker_type); | |
7e6f9ef6 | 645 | |
2754583e MD |
646 | void lttng_clock_ref(void); |
647 | void lttng_clock_unref(void); | |
648 | ||
3a523f5b | 649 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a90917c3 MD |
650 | int lttng_syscalls_register(struct lttng_channel *chan, void *filter); |
651 | int lttng_syscalls_unregister(struct lttng_channel *chan); | |
badfe9f5 | 652 | int lttng_syscalls_destroy(struct lttng_channel *chan); |
80f87dd2 | 653 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
badfe9f5 | 654 | struct lttng_event *event); |
80f87dd2 | 655 | int lttng_syscall_filter_disable(struct lttng_channel *chan, |
badfe9f5 | 656 | struct lttng_event *event); |
12e579db MD |
657 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
658 | struct lttng_kernel_syscall_mask __user *usyscall_mask); | |
1ec65de1 | 659 | #else |
a90917c3 | 660 | static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter) |
1ec65de1 MD |
661 | { |
662 | return -ENOSYS; | |
663 | } | |
664 | ||
a90917c3 | 665 | static inline int lttng_syscalls_unregister(struct lttng_channel *chan) |
1ec65de1 MD |
666 | { |
667 | return 0; | |
668 | } | |
80f87dd2 | 669 | |
badfe9f5 MD |
670 | static inline int lttng_syscalls_destroy(struct lttng_channel *chan) |
671 | { | |
672 | return 0; | |
673 | } | |
674 | ||
f127e61e | 675 | static inline int lttng_syscall_filter_enable(struct lttng_channel *chan, |
badfe9f5 | 676 | struct lttng_event *event); |
80f87dd2 MD |
677 | { |
678 | return -ENOSYS; | |
679 | } | |
680 | ||
f127e61e | 681 | static inline int lttng_syscall_filter_disable(struct lttng_channel *chan, |
badfe9f5 | 682 | struct lttng_event *event); |
80f87dd2 MD |
683 | { |
684 | return -ENOSYS; | |
685 | } | |
12e579db | 686 | |
f127e61e | 687 | static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, |
12e579db MD |
688 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
689 | { | |
690 | return -ENOSYS; | |
691 | } | |
1ec65de1 MD |
692 | #endif |
693 | ||
07dfc1d0 MD |
694 | void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); |
695 | int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler, | |
696 | struct lttng_kernel_filter_bytecode __user *bytecode); | |
f127e61e MD |
697 | void lttng_enabler_event_link_bytecode(struct lttng_event *event, |
698 | struct lttng_enabler *enabler); | |
07dfc1d0 | 699 | |
114667d5 MD |
700 | int lttng_probes_init(void); |
701 | ||
07dfc1d0 MD |
702 | extern struct lttng_ctx *lttng_static_ctx; |
703 | ||
704 | int lttng_context_init(void); | |
705 | void lttng_context_exit(void); | |
2dccf128 | 706 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
c02eb859 MD |
707 | ssize_t lttng_append_context_index(struct lttng_ctx **ctx_p); |
708 | struct lttng_ctx_field *lttng_get_context_field_from_index(struct lttng_ctx *ctx, | |
709 | size_t index); | |
a9dd15da | 710 | void lttng_context_update(struct lttng_ctx *ctx); |
44252f0f | 711 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
07dfc1d0 | 712 | int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
713 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
714 | struct lttng_ctx_field *field); | |
c02eb859 | 715 | void lttng_remove_context_field_index(struct lttng_ctx **ctx_p, size_t index); |
2dccf128 | 716 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 717 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
b3699d90 | 718 | int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 719 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 720 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 721 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
722 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
723 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
724 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
725 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
726 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 727 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
79150a49 JD |
728 | int lttng_add_interruptible_to_ctx(struct lttng_ctx **ctx); |
729 | int lttng_add_need_reschedule_to_ctx(struct lttng_ctx **ctx); | |
730 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
731 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx); | |
732 | #else | |
733 | static inline | |
734 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx) | |
735 | { | |
736 | return -ENOSYS; | |
737 | } | |
738 | #endif | |
739 | #ifdef CONFIG_PREEMPT_RT_FULL | |
740 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx); | |
741 | #else | |
742 | static inline | |
743 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx) | |
744 | { | |
745 | return -ENOSYS; | |
746 | } | |
747 | #endif | |
2fa2d39a FG |
748 | |
749 | int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type); | |
750 | ||
a6cf40a4 MJ |
751 | #if defined(CONFIG_CGROUPS) && \ |
752 | ((LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)) || \ | |
753 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) | |
754 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); | |
755 | #else | |
756 | static inline | |
757 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx) | |
758 | { | |
759 | return -ENOSYS; | |
760 | } | |
761 | #endif | |
762 | ||
763 | #if defined(CONFIG_IPC_NS) && \ | |
764 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
765 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); | |
766 | #else | |
767 | static inline | |
768 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx) | |
769 | { | |
770 | return -ENOSYS; | |
771 | } | |
772 | #endif | |
773 | ||
774 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
775 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
776 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); | |
777 | #else | |
778 | static inline | |
779 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx) | |
780 | { | |
781 | return -ENOSYS; | |
782 | } | |
783 | #endif | |
784 | ||
785 | #if defined(CONFIG_NET_NS) && \ | |
786 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
787 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); | |
788 | #else | |
789 | static inline | |
790 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx) | |
791 | { | |
792 | return -ENOSYS; | |
793 | } | |
794 | #endif | |
795 | ||
796 | #if defined(CONFIG_PID_NS) && \ | |
797 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
798 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); | |
799 | #else | |
800 | static inline | |
801 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx) | |
802 | { | |
803 | return -ENOSYS; | |
804 | } | |
805 | #endif | |
806 | ||
807 | #if defined(CONFIG_USER_NS) && \ | |
808 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
809 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); | |
810 | #else | |
811 | static inline | |
812 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx) | |
813 | { | |
814 | return -ENOSYS; | |
815 | } | |
816 | #endif | |
817 | ||
818 | #if defined(CONFIG_UTS_NS) && \ | |
819 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
820 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); | |
821 | #else | |
822 | static inline | |
823 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx) | |
824 | { | |
825 | return -ENOSYS; | |
826 | } | |
827 | #endif | |
828 | ||
876e2e92 MJ |
829 | #if defined(CONFIG_TIME_NS) && \ |
830 | (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) | |
831 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx); | |
832 | #else | |
833 | static inline | |
834 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx) | |
835 | { | |
836 | return -ENOSYS; | |
837 | } | |
838 | #endif | |
839 | ||
dc923e75 MJ |
840 | int lttng_add_uid_to_ctx(struct lttng_ctx **ctx); |
841 | int lttng_add_euid_to_ctx(struct lttng_ctx **ctx); | |
842 | int lttng_add_suid_to_ctx(struct lttng_ctx **ctx); | |
843 | int lttng_add_gid_to_ctx(struct lttng_ctx **ctx); | |
844 | int lttng_add_egid_to_ctx(struct lttng_ctx **ctx); | |
845 | int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx); | |
846 | int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx); | |
847 | int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx); | |
848 | int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx); | |
849 | int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx); | |
850 | int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx); | |
851 | int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx); | |
852 | ||
8a3af9ee | 853 | #if defined(CONFIG_PERF_EVENTS) |
c24a0d71 MD |
854 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
855 | uint64_t config, | |
856 | const char *name, | |
857 | struct lttng_ctx **ctx); | |
1e367326 MD |
858 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, |
859 | struct lttng_cpuhp_node *node); | |
860 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
861 | struct lttng_cpuhp_node *node); | |
1d443b34 MD |
862 | #else |
863 | static inline | |
864 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
865 | uint64_t config, | |
866 | const char *name, | |
867 | struct lttng_ctx **ctx) | |
868 | { | |
869 | return -ENOSYS; | |
870 | } | |
1e367326 MD |
871 | static inline |
872 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
873 | struct lttng_cpuhp_node *node) | |
874 | { | |
875 | return 0; | |
876 | } | |
877 | static inline | |
878 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
879 | struct lttng_cpuhp_node *node) | |
880 | { | |
881 | return 0; | |
882 | } | |
1d443b34 | 883 | #endif |
02119ee5 | 884 | |
0c956676 MD |
885 | int lttng_logger_init(void); |
886 | void lttng_logger_exit(void); | |
887 | ||
c337ddc2 MD |
888 | extern int lttng_statedump_start(struct lttng_session *session); |
889 | ||
acd614cc | 890 | #ifdef CONFIG_KPROBES |
f17701fb MD |
891 | int lttng_kprobes_register(const char *name, |
892 | const char *symbol_name, | |
893 | uint64_t offset, | |
894 | uint64_t addr, | |
a90917c3 MD |
895 | struct lttng_event *event); |
896 | void lttng_kprobes_unregister(struct lttng_event *event); | |
897 | void lttng_kprobes_destroy_private(struct lttng_event *event); | |
acd614cc MD |
898 | #else |
899 | static inline | |
900 | int lttng_kprobes_register(const char *name, | |
901 | const char *symbol_name, | |
902 | uint64_t offset, | |
903 | uint64_t addr, | |
a90917c3 | 904 | struct lttng_event *event) |
acd614cc MD |
905 | { |
906 | return -ENOSYS; | |
907 | } | |
908 | ||
25f53c39 | 909 | static inline |
a90917c3 | 910 | void lttng_kprobes_unregister(struct lttng_event *event) |
acd614cc MD |
911 | { |
912 | } | |
edeb3137 MD |
913 | |
914 | static inline | |
a90917c3 | 915 | void lttng_kprobes_destroy_private(struct lttng_event *event) |
edeb3137 MD |
916 | { |
917 | } | |
acd614cc | 918 | #endif |
d6d808f3 | 919 | |
3aed4dca FD |
920 | int lttng_event_add_callsite(struct lttng_event *event, |
921 | struct lttng_kernel_event_callsite *callsite); | |
e33fc900 | 922 | |
149b9a9d YB |
923 | #ifdef CONFIG_UPROBES |
924 | int lttng_uprobes_register(const char *name, | |
3aed4dca FD |
925 | int fd, struct lttng_event *event); |
926 | int lttng_uprobes_add_callsite(struct lttng_event *event, | |
927 | struct lttng_kernel_event_callsite *callsite); | |
149b9a9d YB |
928 | void lttng_uprobes_unregister(struct lttng_event *event); |
929 | void lttng_uprobes_destroy_private(struct lttng_event *event); | |
930 | #else | |
931 | static inline | |
932 | int lttng_uprobes_register(const char *name, | |
3aed4dca FD |
933 | int fd, struct lttng_event *event) |
934 | { | |
935 | return -ENOSYS; | |
936 | } | |
937 | ||
938 | static inline | |
939 | int lttng_uprobes_add_callsite(struct lttng_event *event, | |
e33fc900 | 940 | struct lttng_kernel_event_callsite *callsite) |
149b9a9d YB |
941 | { |
942 | return -ENOSYS; | |
943 | } | |
944 | ||
945 | static inline | |
946 | void lttng_uprobes_unregister(struct lttng_event *event) | |
947 | { | |
948 | } | |
949 | ||
950 | static inline | |
951 | void lttng_uprobes_destroy_private(struct lttng_event *event) | |
952 | { | |
953 | } | |
954 | #endif | |
955 | ||
7371f44c MD |
956 | #ifdef CONFIG_KRETPROBES |
957 | int lttng_kretprobes_register(const char *name, | |
958 | const char *symbol_name, | |
959 | uint64_t offset, | |
960 | uint64_t addr, | |
a90917c3 MD |
961 | struct lttng_event *event_entry, |
962 | struct lttng_event *event_exit); | |
963 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
964 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
a0493bef MD |
965 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, |
966 | int enable); | |
7371f44c MD |
967 | #else |
968 | static inline | |
969 | int lttng_kretprobes_register(const char *name, | |
970 | const char *symbol_name, | |
971 | uint64_t offset, | |
972 | uint64_t addr, | |
a90917c3 MD |
973 | struct lttng_event *event_entry, |
974 | struct lttng_event *event_exit) | |
7371f44c MD |
975 | { |
976 | return -ENOSYS; | |
977 | } | |
978 | ||
979 | static inline | |
a90917c3 | 980 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
981 | { |
982 | } | |
983 | ||
984 | static inline | |
a90917c3 | 985 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
986 | { |
987 | } | |
a0493bef MD |
988 | |
989 | static inline | |
990 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, | |
991 | int enable) | |
992 | { | |
993 | return -ENOSYS; | |
994 | } | |
7371f44c MD |
995 | #endif |
996 | ||
3db41b2c | 997 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 998 | |
271b6681 | 999 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 1000 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 1001 | |
ef200626 | 1002 | #define TRACEPOINT_HAS_DATA_ARG |
ef200626 | 1003 | |
ceabb767 MD |
1004 | static inline bool lttng_is_bytewise_integer(const struct lttng_type *type) |
1005 | { | |
1006 | if (type->atype != atype_integer) | |
1007 | return false; | |
1008 | switch (type->u.integer.size) { | |
1009 | case 8: /* Fall-through. */ | |
1010 | case 16: /* Fall-through. */ | |
1011 | case 32: /* Fall-through. */ | |
1012 | case 64: | |
1013 | break; | |
1014 | default: | |
1015 | return false; | |
1016 | } | |
1017 | return true; | |
1018 | } | |
1019 | ||
a90917c3 | 1020 | #endif /* _LTTNG_EVENTS_H */ |