1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
5 * Holds LTTng per-session event registry.
7 * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10 #ifndef _LTTNG_EVENTS_H
11 #define _LTTNG_EVENTS_H
13 #include <lttng/kernel-version.h>
14 #include <linux/list.h>
15 #include <linux/kprobes.h>
16 #include <linux/kref.h>
17 #include <linux/uuid.h>
18 #include <linux/irq_work.h>
19 #include <wrapper/uprobes.h>
20 #include <lttng/cpuhotplug.h>
21 #include <lttng/tracer.h>
22 #include <lttng/abi.h>
23 #include <lttng/abi-old.h>
24 #include <lttng/endian.h>
26 #define lttng_is_signed_type(type) (((type) -1) < (type) 1)
30 struct lttng_metadata_cache
;
31 struct lib_ring_buffer_ctx
;
33 struct perf_event_attr
;
34 struct lib_ring_buffer_config
;
36 /* Type description */
38 enum lttng_kernel_type
{
39 lttng_kernel_type_integer
,
40 lttng_kernel_type_string
,
41 lttng_kernel_type_enum
,
42 lttng_kernel_type_array
,
43 lttng_kernel_type_sequence
,
44 lttng_kernel_type_struct
,
45 lttng_kernel_type_variant
,
46 NR_LTTNG_KERNEL_TYPES
,
49 enum lttng_kernel_string_encoding
{
50 lttng_kernel_string_encoding_none
= 0,
51 lttng_kernel_string_encoding_UTF8
= 1,
52 lttng_kernel_string_encoding_ASCII
= 2,
53 NR_LTTNG_KERNEL_STRING_ENCODING
,
61 struct lttng_kernel_enum_value
{
62 unsigned long long value
;
63 unsigned int signedness
:1;
66 struct lttng_kernel_enum_entry
{
67 struct lttng_kernel_enum_value start
, end
; /* start and end are inclusive */
70 unsigned int is_auto
:1;
75 * struct lttng_kernel_type_common is fixed-size. Its children inherits
76 * from it by embedding struct lttng_kernel_type_common as its first field.
78 struct lttng_kernel_type_common
{
79 enum lttng_kernel_type type
;
82 struct lttng_kernel_type_integer
{
83 struct lttng_kernel_type_common parent
;
84 unsigned int size
; /* in bits */
85 unsigned short alignment
; /* in bits */
86 unsigned int signedness
:1,
88 unsigned int base
; /* 2, 8, 10, 16, for pretty print */
91 struct lttng_kernel_type_string
{
92 struct lttng_kernel_type_common parent
;
93 enum lttng_kernel_string_encoding encoding
;
96 struct lttng_kernel_type_enum
{
97 struct lttng_kernel_type_common parent
;
98 const struct lttng_kernel_enum_desc
*desc
; /* Enumeration mapping */
99 const struct lttng_kernel_type_common
*container_type
;
102 struct lttng_kernel_type_array
{
103 struct lttng_kernel_type_common parent
;
104 const struct lttng_kernel_type_common
*elem_type
;
105 unsigned int length
; /* Num. elems. */
106 unsigned int alignment
;
107 enum lttng_kernel_string_encoding encoding
;
110 struct lttng_kernel_type_sequence
{
111 struct lttng_kernel_type_common parent
;
112 const char *length_name
; /* Length field name. If NULL, use previous field. */
113 const struct lttng_kernel_type_common
*elem_type
;
114 unsigned int alignment
; /* Alignment before elements. */
115 enum lttng_kernel_string_encoding encoding
;
118 struct lttng_kernel_type_struct
{
119 struct lttng_kernel_type_common parent
;
120 unsigned int nr_fields
;
121 const struct lttng_kernel_event_field
**fields
; /* Array of pointers to fields. */
122 unsigned int alignment
;
125 struct lttng_kernel_type_variant
{
126 struct lttng_kernel_type_common parent
;
127 const char *tag_name
; /* Tag field name. If NULL, use previous field. */
128 const struct lttng_kernel_event_field
**choices
; /* Array of pointers to fields. */
129 unsigned int nr_choices
;
130 unsigned int alignment
;
133 struct lttng_kernel_enum_desc
{
135 const struct lttng_kernel_enum_entry
**entries
;
136 unsigned int nr_entries
;
139 /* Event field description */
141 struct lttng_kernel_event_field
{
143 const struct lttng_kernel_type_common
*type
;
144 unsigned int nowrite
:1, /* do not write into trace */
145 user
:1, /* fetch from user-space */
146 nofilter
:1; /* do not consider for filter */
149 #define lttng_kernel_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \
150 ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_integer, { \
152 .type = lttng_kernel_type_integer, \
155 .alignment = (_alignment), \
156 .signedness = (_signedness), \
157 .reverse_byte_order = (_byte_order) != __BYTE_ORDER, \
161 #define lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base) \
162 lttng_kernel_static_type_integer(sizeof(_type) * CHAR_BIT, \
163 lttng_alignof(_type) * CHAR_BIT, \
164 lttng_is_signed_type(_type), \
168 #define lttng_kernel_static_type_enum(_desc, _container_type) \
169 ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_enum, { \
171 .type = lttng_kernel_type_enum, \
174 .container_type = (_container_type), \
177 #define lttng_kernel_static_type_array(_length, _elem_type, _alignment, _encoding) \
178 ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_array, { \
180 .type = lttng_kernel_type_array, \
182 .length = (_length), \
183 .alignment = (_alignment), \
184 .encoding = lttng_kernel_string_encoding_##_encoding, \
185 .elem_type = (_elem_type), \
188 #define lttng_kernel_static_type_array_text(_length) \
189 lttng_kernel_static_type_array(_length, \
190 lttng_kernel_static_type_integer(sizeof(char) * CHAR_BIT, \
191 lttng_alignof(char) * CHAR_BIT, lttng_is_signed_type(char), \
195 #define lttng_kernel_static_type_sequence(_length_name, _elem_type, _alignment, _encoding) \
196 ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_sequence, { \
198 .type = lttng_kernel_type_sequence, \
200 .length_name = (_length_name), \
201 .alignment = (_alignment), \
202 .encoding = lttng_kernel_string_encoding_##_encoding, \
203 .elem_type = (_elem_type), \
206 #define lttng_kernel_static_type_string(_encoding) \
207 ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_string, { \
209 .type = lttng_kernel_type_string, \
211 .encoding = lttng_kernel_string_encoding_##_encoding, \
214 #define lttng_kernel_static_type_struct(_nr_fields, _fields, _alignment) \
215 ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_struct, { \
217 .type = lttng_kernel_type_struct, \
219 .nr_fields = (_nr_fields), \
221 .alignment = (_alignment), \
224 #define lttng_kernel_static_type_variant(_nr_choices, _choices, _tag_name, _alignment) \
225 ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_variant, { \
227 .type = lttng_kernel_type_variant, \
229 .tag_name = (_tag_name), \
230 .choices = _choices, \
231 .nr_choices = (_nr_choices), \
232 .alignment = (_alignment), \
235 #define lttng_kernel_static_event_field(_name, _type, _nowrite, _user, _nofilter) \
236 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_event_field, { \
239 .nowrite = (_nowrite), \
241 .nofilter = (_nofilter), \
244 #define lttng_kernel_static_event_field_array(_fields...) \
245 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_event_field *, \
249 #define lttng_kernel_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \
250 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \
251 .event_field = (_event_field), \
252 .get_size = (_get_size), \
253 .record = (_record), \
254 .get_value = (_get_value), \
255 .destroy = (_destroy), \
259 #define lttng_kernel_static_enum_entry_value(_string, _value) \
260 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \
262 .signedness = lttng_is_signed_type(__typeof__(_value)), \
263 .value = lttng_is_signed_type(__typeof__(_value)) ? \
264 (long long) (_value) : (_value), \
267 .signedness = lttng_is_signed_type(__typeof__(_value)), \
268 .value = lttng_is_signed_type(__typeof__(_value)) ? \
269 (long long) (_value) : (_value), \
271 .string = (_string), \
274 #define lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) \
275 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \
277 .signedness = lttng_is_signed_type(__typeof__(_range_start)), \
278 .value = lttng_is_signed_type(__typeof__(_range_start)) ? \
279 (long long) (_range_start) : (_range_start), \
282 .signedness = lttng_is_signed_type(__typeof__(_range_end)), \
283 .value = lttng_is_signed_type(__typeof__(_range_end)) ? \
284 (long long) (_range_end) : (_range_end), \
286 .string = (_string), \
289 #define lttng_kernel_static_enum_entry_auto(_string) \
290 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \
299 .string = (_string), \
305 struct lttng_ctx_value
{
314 * We need to keep this perf counter field separately from struct
315 * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses.
317 struct lttng_perf_counter_field
{
318 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
319 struct lttng_cpuhp_node cpuhp_prepare
;
320 struct lttng_cpuhp_node cpuhp_online
;
322 struct notifier_block nb
;
325 struct perf_event_attr
*attr
;
326 struct perf_event
**e
; /* per-cpu array */
328 struct lttng_kernel_event_field
*event_field
;
331 struct lttng_probe_ctx
{
332 struct lttng_kernel_event_common
*event
;
333 uint8_t interruptible
;
336 struct lttng_kernel_ctx_field
{
337 const struct lttng_kernel_event_field
*event_field
;
338 size_t (*get_size
)(void *priv
, struct lttng_probe_ctx
*probe_ctx
,
340 void (*record
)(void *priv
, struct lttng_probe_ctx
*probe_ctx
,
341 struct lib_ring_buffer_ctx
*ctx
,
342 struct lttng_channel
*chan
);
343 void (*get_value
)(void *priv
, struct lttng_probe_ctx
*probe_ctx
,
344 struct lttng_ctx_value
*value
);
345 void (*destroy
)(void *priv
);
349 struct lttng_kernel_ctx
{
350 struct lttng_kernel_ctx_field
*fields
;
351 unsigned int nr_fields
;
352 unsigned int allocated_fields
;
353 size_t largest_align
; /* in bytes */
356 struct lttng_kernel_event_desc
{
357 const char *event_name
; /* lttng-modules name */
358 const char *event_kname
; /* Linux kernel name (tracepoints) */
359 const struct lttng_kernel_probe_desc
*probe_desc
;
360 void (*probe_callback
)(void);
361 const struct lttng_kernel_event_field
**fields
; /* event payload */
362 unsigned int nr_fields
;
363 struct module
*owner
;
366 struct lttng_kernel_probe_desc
{
367 const char *provider_name
;
368 const struct lttng_kernel_event_desc
**event_desc
;
369 unsigned int nr_events
;
370 struct list_head head
; /* chain registered probes */
371 struct list_head lazy_init_head
;
372 int lazy
; /* lazy registration */
375 struct lttng_krp
; /* Kretprobe handling */
377 enum lttng_kernel_bytecode_type
{
378 LTTNG_KERNEL_BYTECODE_TYPE_FILTER
,
379 LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE
,
382 struct lttng_bytecode_node
{
383 enum lttng_kernel_bytecode_type type
;
384 struct list_head node
;
385 struct lttng_enabler
*enabler
;
388 uint32_t reloc_offset
;
394 struct lttng_interpreter_output
;
396 struct lttng_bytecode_runtime
{
397 /* Associated bytecode */
398 enum lttng_kernel_bytecode_type type
;
399 struct lttng_bytecode_node
*bc
;
400 int (*interpreter_func
)(struct lttng_bytecode_runtime
*kernel_bytecode
,
401 const char *interpreter_stack_data
,
402 struct lttng_probe_ctx
*lttng_probe_ctx
,
405 struct list_head node
; /* list of bytecode runtime in event */
406 struct lttng_kernel_ctx
*ctx
;
410 * Objects in a linked-list of enablers, owned by an event.
412 struct lttng_enabler_ref
{
413 struct list_head node
; /* enabler ref list */
414 struct lttng_enabler
*ref
; /* backward ref */
417 struct lttng_uprobe_handler
{
418 struct lttng_kernel_event_common
*event
;
420 struct uprobe_consumer up_consumer
;
421 struct list_head node
;
424 struct lttng_kprobe
{
429 struct lttng_uprobe
{
431 struct list_head head
;
434 enum lttng_syscall_entryexit
{
439 enum lttng_syscall_abi
{
440 LTTNG_SYSCALL_ABI_NATIVE
,
441 LTTNG_SYSCALL_ABI_COMPAT
,
445 * Result of the run_filter() callback.
447 enum lttng_kernel_event_filter_result
{
448 LTTNG_KERNEL_EVENT_FILTER_ACCEPT
= 0,
449 LTTNG_KERNEL_EVENT_FILTER_REJECT
= 1,
452 struct lttng_kernel_event_common_private
;
454 enum lttng_kernel_event_type
{
455 LTTNG_KERNEL_EVENT_TYPE_RECORDER
= 0,
456 LTTNG_KERNEL_EVENT_TYPE_NOTIFIER
= 1,
459 struct lttng_kernel_event_common
{
460 struct lttng_kernel_event_common_private
*priv
; /* Private event interface */
462 enum lttng_kernel_event_type type
;
463 /* Get child with container_of(). */
466 int eval_filter
; /* Need to evaluate filters */
467 int (*run_filter
)(const struct lttng_kernel_event_common
*event
,
468 const char *stack_data
,
469 struct lttng_probe_ctx
*probe_ctx
,
473 struct lttng_kernel_event_recorder_private
;
475 struct lttng_kernel_event_recorder
{
476 struct lttng_kernel_event_common parent
;
477 struct lttng_kernel_event_recorder_private
*priv
; /* Private event record interface */
479 struct lttng_channel
*chan
;
482 struct lttng_kernel_notification_ctx
{
483 int eval_capture
; /* Capture evaluation available. */
486 struct lttng_kernel_event_notifier_private
;
488 struct lttng_kernel_event_notifier
{
489 struct lttng_kernel_event_common parent
;
490 struct lttng_kernel_event_notifier_private
*priv
; /* Private event notifier interface */
492 int eval_capture
; /* Need to evaluate capture */
493 void (*notification_send
)(struct lttng_kernel_event_notifier
*event_notifier
,
494 const char *stack_data
,
495 struct lttng_probe_ctx
*probe_ctx
,
496 struct lttng_kernel_notification_ctx
*notif_ctx
);
499 enum lttng_enabler_format_type
{
500 LTTNG_ENABLER_FORMAT_STAR_GLOB
,
501 LTTNG_ENABLER_FORMAT_NAME
,
504 struct lttng_channel_ops
{
505 struct channel
*(*channel_create
)(const char *name
,
508 size_t subbuf_size
, size_t num_subbuf
,
509 unsigned int switch_timer_interval
,
510 unsigned int read_timer_interval
);
511 void (*channel_destroy
)(struct channel
*chan
);
512 struct lib_ring_buffer
*(*buffer_read_open
)(struct channel
*chan
);
513 int (*buffer_has_read_closed_stream
)(struct channel
*chan
);
514 void (*buffer_read_close
)(struct lib_ring_buffer
*buf
);
515 int (*event_reserve
)(struct lib_ring_buffer_ctx
*ctx
);
516 void (*event_commit
)(struct lib_ring_buffer_ctx
*ctx
);
517 void (*event_write
)(struct lib_ring_buffer_ctx
*ctx
, const void *src
,
519 void (*event_write_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
520 const void *src
, size_t len
);
521 void (*event_memset
)(struct lib_ring_buffer_ctx
*ctx
,
523 void (*event_strcpy
)(struct lib_ring_buffer_ctx
*ctx
, const char *src
,
525 void (*event_strcpy_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
526 const char __user
*src
, size_t len
);
528 * packet_avail_size returns the available size in the current
529 * packet. Note that the size returned is only a hint, since it
530 * may change due to concurrent writes.
532 size_t (*packet_avail_size
)(struct channel
*chan
);
533 wait_queue_head_t
*(*get_writer_buf_wait_queue
)(struct channel
*chan
, int cpu
);
534 wait_queue_head_t
*(*get_hp_wait_queue
)(struct channel
*chan
);
535 int (*is_finalized
)(struct channel
*chan
);
536 int (*is_disabled
)(struct channel
*chan
);
537 int (*timestamp_begin
) (const struct lib_ring_buffer_config
*config
,
538 struct lib_ring_buffer
*bufb
,
539 uint64_t *timestamp_begin
);
540 int (*timestamp_end
) (const struct lib_ring_buffer_config
*config
,
541 struct lib_ring_buffer
*bufb
,
542 uint64_t *timestamp_end
);
543 int (*events_discarded
) (const struct lib_ring_buffer_config
*config
,
544 struct lib_ring_buffer
*bufb
,
545 uint64_t *events_discarded
);
546 int (*content_size
) (const struct lib_ring_buffer_config
*config
,
547 struct lib_ring_buffer
*bufb
,
548 uint64_t *content_size
);
549 int (*packet_size
) (const struct lib_ring_buffer_config
*config
,
550 struct lib_ring_buffer
*bufb
,
551 uint64_t *packet_size
);
552 int (*stream_id
) (const struct lib_ring_buffer_config
*config
,
553 struct lib_ring_buffer
*bufb
,
554 uint64_t *stream_id
);
555 int (*current_timestamp
) (const struct lib_ring_buffer_config
*config
,
556 struct lib_ring_buffer
*bufb
,
558 int (*sequence_number
) (const struct lib_ring_buffer_config
*config
,
559 struct lib_ring_buffer
*bufb
,
561 int (*instance_id
) (const struct lib_ring_buffer_config
*config
,
562 struct lib_ring_buffer
*bufb
,
566 struct lttng_counter_ops
{
567 struct lib_counter
*(*counter_create
)(size_t nr_dimensions
,
568 const size_t *max_nr_elem
, /* for each dimension */
569 int64_t global_sum_step
);
570 void (*counter_destroy
)(struct lib_counter
*counter
);
571 int (*counter_add
)(struct lib_counter
*counter
, const size_t *dimension_indexes
,
574 * counter_read reads a specific cpu's counter if @cpu >= 0, or
575 * the global aggregation counter if @cpu == -1.
577 int (*counter_read
)(struct lib_counter
*counter
, const size_t *dimension_indexes
, int cpu
,
578 int64_t *value
, bool *overflow
, bool *underflow
);
580 * counter_aggregate returns the total sum of all per-cpu counters and
581 * the global aggregation counter.
583 int (*counter_aggregate
)(struct lib_counter
*counter
, const size_t *dimension_indexes
,
584 int64_t *value
, bool *overflow
, bool *underflow
);
585 int (*counter_clear
)(struct lib_counter
*counter
, const size_t *dimension_indexes
);
588 struct lttng_transport
{
590 struct module
*owner
;
591 struct list_head node
;
592 struct lttng_channel_ops ops
;
595 struct lttng_counter_transport
{
597 struct module
*owner
;
598 struct list_head node
;
599 struct lttng_counter_ops ops
;
602 struct lttng_syscall_filter
;
604 #define LTTNG_EVENT_HT_BITS 12
605 #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
607 struct lttng_event_ht
{
608 struct hlist_head table
[LTTNG_EVENT_HT_SIZE
];
611 #define LTTNG_EVENT_NOTIFIER_HT_BITS 12
612 #define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS)
614 struct lttng_event_notifier_ht
{
615 struct hlist_head table
[LTTNG_EVENT_NOTIFIER_HT_SIZE
];
618 struct lttng_channel
{
620 struct channel
*chan
; /* Channel buffers */
622 struct lttng_kernel_ctx
*ctx
;
623 /* Event ID management */
624 struct lttng_session
*session
;
625 struct file
*file
; /* File associated to channel */
626 unsigned int free_event_id
; /* Next event ID to allocate */
627 struct list_head list
; /* Channel list */
628 struct lttng_channel_ops
*ops
;
629 struct lttng_transport
*transport
;
630 struct hlist_head
*sc_table
; /* for syscall tracing */
631 struct hlist_head
*compat_sc_table
;
632 struct hlist_head
*sc_exit_table
; /* for syscall exit tracing */
633 struct hlist_head
*compat_sc_exit_table
;
634 struct hlist_head sc_unknown
; /* for unknown syscalls */
635 struct hlist_head sc_compat_unknown
;
636 struct hlist_head sc_exit_unknown
;
637 struct hlist_head compat_sc_exit_unknown
;
638 struct lttng_syscall_filter
*sc_filter
;
639 int header_type
; /* 0: unset, 1: compact, 2: large */
640 enum channel_type channel_type
;
641 int syscall_all_entry
;
642 int syscall_all_exit
;
643 unsigned int metadata_dumped
:1,
644 sys_enter_registered
:1,
645 sys_exit_registered
:1,
646 tstate
:1; /* Transient enable state */
649 struct lttng_metadata_stream
{
650 void *priv
; /* Ring buffer private data */
651 struct lttng_metadata_cache
*metadata_cache
;
652 unsigned int metadata_in
; /* Bytes read from the cache */
653 unsigned int metadata_out
; /* Bytes consumed from stream */
654 int finalized
; /* Has channel been finalized */
655 wait_queue_head_t read_wait
; /* Reader buffer-level wait queue */
656 struct list_head list
; /* Stream list */
657 struct lttng_transport
*transport
;
658 uint64_t version
; /* Current version of the metadata cache */
659 bool coherent
; /* Stream in a coherent state */
662 #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
664 struct lttng_dynamic_len_stack
{
665 size_t stack
[LTTNG_DYNAMIC_LEN_STACK_SIZE
];
669 DECLARE_PER_CPU(struct lttng_dynamic_len_stack
, lttng_dynamic_len_stack
);
672 * struct lttng_id_tracker declared in header due to deferencing of *v
673 * in RCU_INITIALIZER(v).
675 #define LTTNG_ID_HASH_BITS 6
676 #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS)
689 struct lttng_id_tracker_rcu
{
690 struct hlist_head id_hash
[LTTNG_ID_TABLE_SIZE
];
693 struct lttng_id_tracker
{
694 struct lttng_session
*session
;
695 enum tracker_type tracker_type
;
696 struct lttng_id_tracker_rcu
*p
; /* RCU dereferenced. */
699 struct lttng_id_hash_node
{
700 struct hlist_node hlist
;
704 struct lttng_session
{
705 int active
; /* Is trace session active ? */
706 int been_active
; /* Has trace session been active ? */
707 struct file
*file
; /* File associated to session */
708 struct list_head chan
; /* Channel list head */
709 struct list_head events
; /* Event list head */
710 struct list_head list
; /* Session list */
711 unsigned int free_chan_id
; /* Next chan ID to allocate */
712 uuid_le uuid
; /* Trace session unique ID */
713 struct lttng_metadata_cache
*metadata_cache
;
714 struct lttng_id_tracker pid_tracker
;
715 struct lttng_id_tracker vpid_tracker
;
716 struct lttng_id_tracker uid_tracker
;
717 struct lttng_id_tracker vuid_tracker
;
718 struct lttng_id_tracker gid_tracker
;
719 struct lttng_id_tracker vgid_tracker
;
720 unsigned int metadata_dumped
:1,
721 tstate
:1; /* Transient enable state */
722 /* List of event enablers */
723 struct list_head enablers_head
;
724 /* Hash table of events */
725 struct lttng_event_ht events_ht
;
726 char name
[LTTNG_KERNEL_ABI_SESSION_NAME_LEN
];
727 char creation_time
[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN
];
730 struct lttng_counter
{
731 struct file
*file
; /* File associated to counter. */
733 struct lttng_counter_transport
*transport
;
734 struct lib_counter
*counter
;
735 struct lttng_counter_ops
*ops
;
738 struct lttng_event_notifier_group
{
739 struct file
*file
; /* File associated to event notifier group */
740 struct file
*notif_file
; /* File used to expose notifications to userspace. */
741 struct list_head node
; /* event notifier group list */
742 struct list_head enablers_head
; /* List of enablers */
743 struct list_head event_notifiers_head
; /* List of event notifier */
744 struct lttng_event_notifier_ht event_notifiers_ht
; /* Hash table of event notifiers */
745 struct lttng_channel_ops
*ops
;
746 struct lttng_transport
*transport
;
747 struct channel
*chan
; /* Ring buffer channel for event notifier group. */
748 struct lib_ring_buffer
*buf
; /* Ring buffer for event notifier group. */
749 wait_queue_head_t read_wait
;
750 struct irq_work wakeup_pending
; /* Pending wakeup irq work. */
751 struct lttng_kernel_event_notifier
*sc_unknown
; /* for unknown syscalls */
752 struct lttng_kernel_event_notifier
*sc_compat_unknown
;
754 struct lttng_syscall_filter
*sc_filter
;
756 struct hlist_head
*event_notifier_syscall_dispatch
;
757 struct hlist_head
*event_notifier_compat_syscall_dispatch
;
758 struct hlist_head
*event_notifier_exit_syscall_dispatch
;
759 struct hlist_head
*event_notifier_exit_compat_syscall_dispatch
;
761 struct hlist_head event_notifier_unknown_syscall_dispatch
;
762 struct hlist_head event_notifier_compat_unknown_syscall_dispatch
;
763 struct hlist_head event_notifier_exit_unknown_syscall_dispatch
;
764 struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch
;
766 int syscall_all_entry
;
767 int syscall_all_exit
;
769 unsigned int sys_enter_registered
:1, sys_exit_registered
:1;
771 struct lttng_counter
*error_counter
;
772 size_t error_counter_len
;
775 struct lttng_metadata_cache
{
776 char *data
; /* Metadata cache */
777 unsigned int cache_alloc
; /* Metadata allocated size (bytes) */
778 unsigned int metadata_written
; /* Number of bytes written in metadata cache */
779 atomic_t producing
; /* Metadata being produced (incomplete) */
780 struct kref refcount
; /* Metadata cache usage */
781 struct list_head metadata_stream
; /* Metadata stream list */
782 uuid_le uuid
; /* Trace session unique ID (copy) */
783 struct mutex lock
; /* Produce/consume lock */
784 uint64_t version
; /* Current version of the metadata */
787 void lttng_lock_sessions(void);
788 void lttng_unlock_sessions(void);
790 struct list_head
*lttng_get_probe_list_head(void);
792 struct lttng_event_enabler
*lttng_event_enabler_create(
793 enum lttng_enabler_format_type format_type
,
794 struct lttng_kernel_abi_event
*event_param
,
795 struct lttng_channel
*chan
);
797 int lttng_event_enabler_enable(struct lttng_event_enabler
*event_enabler
);
798 int lttng_event_enabler_disable(struct lttng_event_enabler
*event_enabler
);
799 struct lttng_event_notifier_enabler
*lttng_event_notifier_enabler_create(
800 struct lttng_event_notifier_group
*event_notifier_group
,
801 enum lttng_enabler_format_type format_type
,
802 struct lttng_kernel_abi_event_notifier
*event_notifier_param
);
804 int lttng_event_notifier_enabler_enable(
805 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
806 int lttng_event_notifier_enabler_disable(
807 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
808 int lttng_fix_pending_events(void);
809 int lttng_fix_pending_event_notifiers(void);
810 int lttng_session_active(void);
811 bool lttng_event_notifier_active(void);
813 struct lttng_session
*lttng_session_create(void);
814 int lttng_session_enable(struct lttng_session
*session
);
815 int lttng_session_disable(struct lttng_session
*session
);
816 void lttng_session_destroy(struct lttng_session
*session
);
817 int lttng_session_metadata_regenerate(struct lttng_session
*session
);
818 int lttng_session_statedump(struct lttng_session
*session
);
819 void metadata_cache_destroy(struct kref
*kref
);
821 struct lttng_counter
*lttng_kernel_counter_create(
822 const char *counter_transport_name
, size_t number_dimensions
,
823 const size_t *dimensions_sizes
);
824 int lttng_kernel_counter_read(struct lttng_counter
*counter
,
825 const size_t *dimension_indexes
, int32_t cpu
,
826 int64_t *val
, bool *overflow
, bool *underflow
);
827 int lttng_kernel_counter_aggregate(struct lttng_counter
*counter
,
828 const size_t *dimension_indexes
, int64_t *val
,
829 bool *overflow
, bool *underflow
);
830 int lttng_kernel_counter_clear(struct lttng_counter
*counter
,
831 const size_t *dimension_indexes
);
834 struct lttng_event_notifier_group
*lttng_event_notifier_group_create(void);
835 int lttng_event_notifier_group_create_error_counter(
836 struct file
*event_notifier_group_file
,
837 const struct lttng_kernel_abi_counter_conf
*error_counter_conf
);
838 void lttng_event_notifier_group_destroy(
839 struct lttng_event_notifier_group
*event_notifier_group
);
841 struct lttng_channel
*lttng_channel_create(struct lttng_session
*session
,
842 const char *transport_name
,
844 size_t subbuf_size
, size_t num_subbuf
,
845 unsigned int switch_timer_interval
,
846 unsigned int read_timer_interval
,
847 enum channel_type channel_type
);
848 struct lttng_channel
*lttng_global_channel_create(struct lttng_session
*session
,
849 int overwrite
, void *buf_addr
,
850 size_t subbuf_size
, size_t num_subbuf
,
851 unsigned int switch_timer_interval
,
852 unsigned int read_timer_interval
);
854 void lttng_metadata_channel_destroy(struct lttng_channel
*chan
);
855 struct lttng_kernel_event_recorder
*lttng_kernel_event_recorder_create(struct lttng_channel
*chan
,
856 struct lttng_kernel_abi_event
*event_param
,
857 const struct lttng_kernel_event_desc
*event_desc
,
858 enum lttng_kernel_abi_instrumentation itype
);
859 struct lttng_kernel_event_recorder
*_lttng_kernel_event_recorder_create(struct lttng_channel
*chan
,
860 struct lttng_kernel_abi_event
*event_param
,
861 const struct lttng_kernel_event_desc
*event_desc
,
862 enum lttng_kernel_abi_instrumentation itype
);
863 struct lttng_kernel_event_recorder
*lttng_event_compat_old_create(struct lttng_channel
*chan
,
864 struct lttng_kernel_abi_old_event
*old_event_param
,
865 const struct lttng_kernel_event_desc
*internal_desc
);
867 struct lttng_kernel_event_notifier
*lttng_event_notifier_create(
868 const struct lttng_kernel_event_desc
*event_notifier_desc
,
870 uint64_t error_counter_idx
,
871 struct lttng_event_notifier_group
*event_notifier_group
,
872 struct lttng_kernel_abi_event_notifier
*event_notifier_param
,
873 enum lttng_kernel_abi_instrumentation itype
);
874 struct lttng_kernel_event_notifier
*_lttng_event_notifier_create(
875 const struct lttng_kernel_event_desc
*event_notifier_desc
,
877 uint64_t error_counter_idx
,
878 struct lttng_event_notifier_group
*event_notifier_group
,
879 struct lttng_kernel_abi_event_notifier
*event_notifier_param
,
880 enum lttng_kernel_abi_instrumentation itype
);
882 int lttng_channel_enable(struct lttng_channel
*channel
);
883 int lttng_channel_disable(struct lttng_channel
*channel
);
884 int lttng_event_enable(struct lttng_kernel_event_common
*event
);
885 int lttng_event_disable(struct lttng_kernel_event_common
*event
);
887 void lttng_transport_register(struct lttng_transport
*transport
);
888 void lttng_transport_unregister(struct lttng_transport
*transport
);
890 void lttng_counter_transport_register(struct lttng_counter_transport
*transport
);
891 void lttng_counter_transport_unregister(struct lttng_counter_transport
*transport
);
893 void synchronize_trace(void);
894 int lttng_abi_init(void);
895 int lttng_abi_compat_old_init(void);
896 void lttng_abi_exit(void);
897 void lttng_abi_compat_old_exit(void);
899 int lttng_probe_register(struct lttng_kernel_probe_desc
*desc
);
900 void lttng_probe_unregister(struct lttng_kernel_probe_desc
*desc
);
901 const struct lttng_kernel_event_desc
*lttng_event_desc_get(const char *name
);
902 void lttng_event_desc_put(const struct lttng_kernel_event_desc
*desc
);
903 int lttng_probes_init(void);
904 void lttng_probes_exit(void);
906 int lttng_metadata_output_channel(struct lttng_metadata_stream
*stream
,
907 struct channel
*chan
, bool *coherent
);
909 int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node
*node
);
910 int lttng_id_tracker_empty_set(struct lttng_id_tracker
*lf
);
911 void lttng_id_tracker_destroy(struct lttng_id_tracker
*lf
, bool rcu
);
912 bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu
*p
, int id
);
913 int lttng_id_tracker_add(struct lttng_id_tracker
*lf
, int id
);
914 int lttng_id_tracker_del(struct lttng_id_tracker
*lf
, int id
);
916 int lttng_session_track_id(struct lttng_session
*session
,
917 enum tracker_type tracker_type
, int id
);
918 int lttng_session_untrack_id(struct lttng_session
*session
,
919 enum tracker_type tracker_type
, int id
);
921 int lttng_session_list_tracker_ids(struct lttng_session
*session
,
922 enum tracker_type tracker_type
);
924 void lttng_clock_ref(void);
925 void lttng_clock_unref(void);
927 int lttng_desc_match_enabler(const struct lttng_kernel_event_desc
*desc
,
928 struct lttng_enabler
*enabler
);
930 #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
931 int lttng_syscalls_register_event(struct lttng_event_enabler
*event_enabler
);
932 int lttng_syscalls_unregister_channel(struct lttng_channel
*chan
);
933 int lttng_syscalls_destroy_event(struct lttng_channel
*chan
);
934 int lttng_syscall_filter_enable_event(
935 struct lttng_channel
*chan
,
936 struct lttng_kernel_event_recorder
*event
);
937 int lttng_syscall_filter_disable_event(
938 struct lttng_channel
*chan
,
939 struct lttng_kernel_event_recorder
*event
);
941 long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
942 struct lttng_kernel_abi_syscall_mask __user
*usyscall_mask
);
944 int lttng_syscalls_register_event_notifier(
945 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
946 int lttng_syscalls_create_matching_event_notifiers(
947 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
948 int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group
*group
);
949 int lttng_syscall_filter_enable_event_notifier(struct lttng_kernel_event_notifier
*event_notifier
);
950 int lttng_syscall_filter_disable_event_notifier(struct lttng_kernel_event_notifier
*event_notifier
);
952 static inline int lttng_syscalls_register_event(
953 struct lttng_event_enabler
*event_enabler
)
958 static inline int lttng_syscalls_unregister_channel(struct lttng_channel
*chan
)
963 static inline int lttng_syscalls_destroy(struct lttng_channel
*chan
)
968 static inline int lttng_syscall_filter_enable_event(struct lttng_channel
*chan
,
969 struct lttng_kernel_event_recorder
*event
);
974 static inline int lttng_syscall_filter_disable_event(struct lttng_channel
*chan
,
975 struct lttng_kernel_event_recorder
*event
);
980 static inline long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
981 struct lttng_kernel_syscall_mask __user
*usyscall_mask
)
986 static inline int lttng_syscalls_register_event_notifier(
987 struct lttng_event_notifier_group
*group
)
992 static inline int lttng_syscalls_unregister_event_notifier_group(
993 struct lttng_event_notifier_group
*group
)
998 static inline int lttng_syscall_filter_enable_event_notifier(
999 struct lttng_event_notifier_group
*group
,
1005 static inline int lttng_syscall_filter_disable_event_notifier(
1006 struct lttng_event_notifier_group
*group
,
1014 int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler
*event_enabler
,
1015 struct lttng_kernel_abi_filter_bytecode __user
*bytecode
);
1016 int lttng_event_notifier_enabler_attach_filter_bytecode(
1017 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
1018 struct lttng_kernel_abi_filter_bytecode __user
*bytecode
);
1019 int lttng_event_notifier_enabler_attach_capture_bytecode(
1020 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
1021 struct lttng_kernel_abi_capture_bytecode __user
*bytecode
);
1023 void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc
*event_desc
,
1024 struct lttng_kernel_ctx
*ctx
,
1025 struct list_head
*instance_bytecode_runtime_head
,
1026 struct list_head
*enabler_bytecode_runtime_head
);
1027 void lttng_free_event_filter_runtime(struct lttng_kernel_event_common
*event
);
1029 int lttng_probes_init(void);
1031 extern struct lttng_kernel_ctx
*lttng_static_ctx
;
1033 int lttng_context_init(void);
1034 void lttng_context_exit(void);
1035 int lttng_kernel_context_append(struct lttng_kernel_ctx
**ctx_p
,
1036 const struct lttng_kernel_ctx_field
*f
);
1037 void lttng_kernel_context_remove_last(struct lttng_kernel_ctx
**ctx_p
);
1038 struct lttng_kernel_ctx_field
*lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx
*ctx
,
1040 int lttng_kernel_find_context(struct lttng_kernel_ctx
*ctx
, const char *name
);
1041 int lttng_kernel_get_context_index(struct lttng_kernel_ctx
*ctx
, const char *name
);
1042 void lttng_kernel_destroy_context(struct lttng_kernel_ctx
*ctx
);
1043 int lttng_add_pid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1044 int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx
**ctx
);
1045 int lttng_add_procname_to_ctx(struct lttng_kernel_ctx
**ctx
);
1046 int lttng_add_prio_to_ctx(struct lttng_kernel_ctx
**ctx
);
1047 int lttng_add_nice_to_ctx(struct lttng_kernel_ctx
**ctx
);
1048 int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1049 int lttng_add_tid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1050 int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1051 int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1052 int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1053 int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx
**ctx
);
1054 int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx
**ctx
);
1055 int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx
**ctx
);
1056 #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
1057 int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx
**ctx
);
1060 int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx
**ctx
)
1065 #ifdef CONFIG_PREEMPT_RT_FULL
1066 int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx
**ctx
);
1069 int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx
**ctx
)
1075 int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx
**ctx
, int type
);
1077 #if defined(CONFIG_CGROUPS) && \
1078 ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \
1079 LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
1080 int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx
**ctx
);
1083 int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx
**ctx
)
1089 #if defined(CONFIG_IPC_NS) && \
1090 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1091 int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx
**ctx
);
1094 int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx
**ctx
)
1100 #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
1101 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1102 int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx
**ctx
);
1105 int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx
**ctx
)
1111 #if defined(CONFIG_NET_NS) && \
1112 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1113 int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx
**ctx
);
1116 int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx
**ctx
)
1122 #if defined(CONFIG_PID_NS) && \
1123 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1124 int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx
**ctx
);
1127 int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx
**ctx
)
1133 #if defined(CONFIG_USER_NS) && \
1134 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1135 int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx
**ctx
);
1138 int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx
**ctx
)
1144 #if defined(CONFIG_UTS_NS) && \
1145 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1146 int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx
**ctx
);
1149 int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx
**ctx
)
1155 #if defined(CONFIG_TIME_NS) && \
1156 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
1157 int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx
**ctx
);
1160 int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx
**ctx
)
1166 int lttng_add_uid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1167 int lttng_add_euid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1168 int lttng_add_suid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1169 int lttng_add_gid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1170 int lttng_add_egid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1171 int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1172 int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1173 int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1174 int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1175 int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1176 int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1177 int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx
**ctx
);
1179 #if defined(CONFIG_PERF_EVENTS)
1180 int lttng_add_perf_counter_to_ctx(uint32_t type
,
1183 struct lttng_kernel_ctx
**ctx
);
1184 int lttng_cpuhp_perf_counter_online(unsigned int cpu
,
1185 struct lttng_cpuhp_node
*node
);
1186 int lttng_cpuhp_perf_counter_dead(unsigned int cpu
,
1187 struct lttng_cpuhp_node
*node
);
1190 int lttng_add_perf_counter_to_ctx(uint32_t type
,
1193 struct lttng_kernel_ctx
**ctx
)
1198 int lttng_cpuhp_perf_counter_online(unsigned int cpu
,
1199 struct lttng_cpuhp_node
*node
)
1204 int lttng_cpuhp_perf_counter_dead(unsigned int cpu
,
1205 struct lttng_cpuhp_node
*node
)
1211 int lttng_logger_init(void);
1212 void lttng_logger_exit(void);
1214 extern int lttng_statedump_start(struct lttng_session
*session
);
1216 #ifdef CONFIG_KPROBES
1217 int lttng_kprobes_register_event(const char *name
,
1218 const char *symbol_name
,
1221 struct lttng_kernel_event_recorder
*event
);
1222 void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder
*event
);
1223 void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder
*event
);
1224 int lttng_kprobes_register_event_notifier(const char *symbol_name
,
1227 struct lttng_kernel_event_notifier
*event_notifier
);
1228 void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier
*event_notifier
);
1229 void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier
*event_notifier
);
1232 int lttng_kprobes_register_event(const char *name
,
1233 const char *symbol_name
,
1236 struct lttng_kernel_event_recorder
*event
)
1242 void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder
*event
)
1247 void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder
*event
)
1252 int lttng_kprobes_register_event_notifier(const char *symbol_name
,
1255 struct lttng_kernel_event_notifier
*event_notifier
)
1261 void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier
*event_notifier
)
1266 void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier
*event_notifier
)
1271 int lttng_event_add_callsite(struct lttng_kernel_event_common
*event
,
1272 struct lttng_kernel_abi_event_callsite __user
*callsite
);
1274 #ifdef CONFIG_UPROBES
1275 int lttng_uprobes_register_event(const char *name
,
1276 int fd
, struct lttng_kernel_event_recorder
*event
);
1277 int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common
*event
,
1278 struct lttng_kernel_abi_event_callsite __user
*callsite
);
1279 void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder
*event
);
1280 void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder
*event
);
1281 int lttng_uprobes_register_event_notifier(const char *name
,
1282 int fd
, struct lttng_kernel_event_notifier
*event_notifier
);
1283 void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier
*event_notifier
);
1284 void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier
*event_notifier
);
1287 int lttng_uprobes_register_event(const char *name
,
1288 int fd
, struct lttng_kernel_event_recorder
*event
)
1294 int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common
*event
,
1295 struct lttng_kernel_abi_event_callsite __user
*callsite
)
1301 void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder
*event
)
1306 void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder
*event
)
1311 int lttng_uprobes_register_event_notifier(const char *name
,
1312 int fd
, struct lttng_kernel_event_notifier
*event_notifier
)
1318 void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier
*event_notifier
)
1323 void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier
*event_notifier
)
1328 #ifdef CONFIG_KRETPROBES
1329 int lttng_kretprobes_register(const char *name
,
1330 const char *symbol_name
,
1333 struct lttng_kernel_event_recorder
*event_entry
,
1334 struct lttng_kernel_event_recorder
*event_exit
);
1335 void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder
*event
);
1336 void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder
*event
);
1337 int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common
*event
,
1341 int lttng_kretprobes_register(const char *name
,
1342 const char *symbol_name
,
1345 struct lttng_kernel_event_recorder
*event_entry
,
1346 struct lttng_kernel_event_recorder
*event_exit
)
1352 void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder
*event
)
1357 void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder
*event
)
1362 int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common
*event
,
1369 int lttng_calibrate(struct lttng_kernel_abi_calibrate
*calibrate
);
1371 extern const struct file_operations lttng_tracepoint_list_fops
;
1372 extern const struct file_operations lttng_syscall_list_fops
;
1374 #define TRACEPOINT_HAS_DATA_ARG
1376 #endif /* _LTTNG_EVENTS_H */