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)) < 0)
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 */
43 atype_sequence_nestable
,
44 atype_struct_nestable
,
45 atype_variant_nestable
,
49 enum lttng_string_encodings
{
50 lttng_encode_none
= 0,
51 lttng_encode_UTF8
= 1,
52 lttng_encode_ASCII
= 2,
61 struct lttng_enum_value
{
62 unsigned long long value
;
63 unsigned int signedness
:1;
66 struct lttng_enum_entry
{
67 struct lttng_enum_value start
, end
; /* start and end are inclusive */
70 unsigned int is_auto
:1;
74 #define __type_integer(_type, _size, _alignment, _signedness, \
75 _byte_order, _base, _encoding) \
77 .atype = atype_integer, \
80 .size = (_size) ? : sizeof(_type) * CHAR_BIT, \
81 .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \
82 .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \
83 .reverse_byte_order = _byte_order != __BYTE_ORDER, \
85 .encoding = lttng_encode_##_encoding, \
89 struct lttng_integer_type {
90 unsigned int size
; /* in bits */
91 unsigned short alignment
; /* in bits */
92 unsigned int signedness
:1,
94 unsigned int base
; /* 2, 8, 10, 16, for pretty print */
95 enum lttng_string_encodings encoding
;
99 enum abstract_types atype
;
101 struct lttng_integer_type integer
;
103 enum lttng_string_encodings encoding
;
106 const struct lttng_enum_desc
*desc
; /* Enumeration mapping */
107 const struct lttng_type
*container_type
;
110 const struct lttng_type
*elem_type
;
111 unsigned int length
; /* Num. elems. */
112 unsigned int alignment
;
115 const char *length_name
; /* Length field name. */
116 const struct lttng_type
*elem_type
;
117 unsigned int alignment
; /* Alignment before elements. */
120 unsigned int nr_fields
;
121 const struct lttng_event_field
*fields
; /* Array of fields. */
122 unsigned int alignment
;
125 const char *tag_name
;
126 const struct lttng_event_field
*choices
; /* Array of fields. */
127 unsigned int nr_choices
;
128 unsigned int alignment
;
133 struct lttng_enum_desc
{
135 const struct lttng_enum_entry
*entries
;
136 unsigned int nr_entries
;
139 /* Event field description */
141 struct lttng_event_field
{
143 struct lttng_type 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 union lttng_ctx_value
{
156 * We need to keep this perf counter field separately from struct
157 * lttng_ctx_field because cpu hotplug needs fixed-location addresses.
159 struct lttng_perf_counter_field
{
160 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
161 struct lttng_cpuhp_node cpuhp_prepare
;
162 struct lttng_cpuhp_node cpuhp_online
;
164 struct notifier_block nb
;
167 struct perf_event_attr
*attr
;
168 struct perf_event
**e
; /* per-cpu array */
171 struct lttng_probe_ctx
{
172 struct lttng_event
*event
;
173 struct lttng_event_notifier
*event_notifier
; // Not sure if we will ever need it.
174 uint8_t interruptible
;
177 struct lttng_ctx_field
{
178 struct lttng_event_field event_field
;
179 size_t (*get_size
)(size_t offset
);
180 size_t (*get_size_arg
)(size_t offset
, struct lttng_ctx_field
*field
,
181 struct lib_ring_buffer_ctx
*ctx
,
182 struct lttng_channel
*chan
);
183 void (*record
)(struct lttng_ctx_field
*field
,
184 struct lib_ring_buffer_ctx
*ctx
,
185 struct lttng_channel
*chan
);
186 void (*get_value
)(struct lttng_ctx_field
*field
,
187 struct lttng_probe_ctx
*lttng_probe_ctx
,
188 union lttng_ctx_value
*value
);
190 struct lttng_perf_counter_field
*perf_counter
;
192 void (*destroy
)(struct lttng_ctx_field
*field
);
194 * Private data to keep state between get_size and record.
195 * User must perform its own synchronization to protect against
196 * concurrent and reentrant contexts.
202 struct lttng_ctx_field
*fields
;
203 unsigned int nr_fields
;
204 unsigned int allocated_fields
;
205 size_t largest_align
; /* in bytes */
208 struct lttng_event_desc
{
209 const char *name
; /* lttng-modules name */
210 const char *kname
; /* Linux kernel name (tracepoints) */
211 void *probe_callback
; /* store-event and count-event probe */
212 const struct lttng_event_ctx
*ctx
; /* context */
213 const struct lttng_event_field
*fields
; /* event payload */
214 unsigned int nr_fields
;
215 struct module
*owner
;
216 void *event_notifier_callback
;
219 struct lttng_probe_desc
{
220 const char *provider
;
221 const struct lttng_event_desc
**event_desc
;
222 unsigned int nr_events
;
223 struct list_head head
; /* chain registered probes */
224 struct list_head lazy_init_head
;
225 int lazy
; /* lazy registration */
228 struct lttng_krp
; /* Kretprobe handling */
230 enum lttng_event_type
{
231 LTTNG_TYPE_EVENT
= 0,
232 LTTNG_TYPE_ENABLER
= 1,
235 enum lttng_bytecode_node_type
{
236 LTTNG_BYTECODE_NODE_TYPE_FILTER
,
237 LTTNG_BYTECODE_NODE_TYPE_CAPTURE
,
240 struct lttng_bytecode_node
{
241 enum lttng_bytecode_node_type type
;
242 struct list_head node
;
243 struct lttng_enabler
*enabler
;
246 uint32_t reloc_offset
;
253 * Bytecode interpreter return value masks.
255 enum lttng_bytecode_interpreter_ret
{
256 LTTNG_INTERPRETER_DISCARD
= 0,
257 LTTNG_INTERPRETER_RECORD_FLAG
= (1ULL << 0),
258 /* Other bits are kept for future use. */
261 struct lttng_interpreter_output
;
263 struct lttng_bytecode_runtime
{
264 /* Associated bytecode */
265 struct lttng_bytecode_node
*bc
;
267 uint64_t (*filter
)(void *filter_data
,
268 struct lttng_probe_ctx
*lttng_probe_ctx
,
269 const char *filter_stack_data
);
270 uint64_t (*capture
)(void *filter_data
,
271 struct lttng_probe_ctx
*lttng_probe_ctx
,
272 const char *capture_stack_data
,
273 struct lttng_interpreter_output
*output
);
276 struct list_head node
; /* list of bytecode runtime in event */
277 struct lttng_ctx
*ctx
;
281 * Objects in a linked-list of enablers, owned by an event.
283 struct lttng_enabler_ref
{
284 struct list_head node
; /* enabler ref list */
285 struct lttng_enabler
*ref
; /* backward ref */
288 struct lttng_uprobe_handler
{
290 struct lttng_event
*event
;
291 struct lttng_event_notifier
*event_notifier
;
294 struct uprobe_consumer up_consumer
;
295 struct list_head node
;
298 struct lttng_kprobe
{
304 struct lttng_uprobe
{
306 struct list_head head
;
310 enum lttng_syscall_entryexit
{
315 enum lttng_syscall_abi
{
316 LTTNG_SYSCALL_ABI_NATIVE
,
317 LTTNG_SYSCALL_ABI_COMPAT
,
320 struct lttng_syscall
{
321 struct list_head node
; /* chain registered syscall trigger */
322 unsigned int syscall_id
;
326 enum lttng_key_token_type
{
327 LTTNG_KEY_TOKEN_STRING
= 0,
328 LTTNG_KEY_TOKEN_EVENT_NAME
= 1,
331 #define LTTNG_KEY_TOKEN_STRING_LEN_MAX LTTNG_KERNEL_KEY_TOKEN_STRING_LEN_MAX
332 struct lttng_key_token
{
333 enum lttng_key_token_type type
;
335 char string
[LTTNG_KEY_TOKEN_STRING_LEN_MAX
];
339 #define LTTNG_NR_KEY_TOKEN LTTNG_KERNEL_NR_KEY_TOKEN
340 struct lttng_counter_key_dimension
{
341 size_t nr_key_tokens
;
342 struct lttng_key_token key_tokens
[LTTNG_KERNEL_NR_KEY_TOKEN
];
345 #define LTTNG_COUNTER_DIMENSION_MAX LTTNG_KERNEL_COUNTER_DIMENSION_MAX
346 struct lttng_counter_key
{
347 size_t nr_dimensions
;
348 struct lttng_counter_key_dimension key_dimensions
[LTTNG_COUNTER_DIMENSION_MAX
];
351 #define LTTNG_KEY_TOKEN_STRING_LEN_MAX LTTNG_KERNEL_KEY_TOKEN_STRING_LEN_MAX
354 * lttng_event structure is referred to by the tracing fast path. It must be
358 enum lttng_event_type evtype
; /* First field. */
359 struct lttng_event_container
*container
;
362 const struct lttng_event_desc
*desc
;
364 struct lttng_ctx
*ctx
;
365 enum lttng_kernel_instrumentation instrumentation
;
367 struct lttng_kprobe kprobe
;
369 struct lttng_krp
*lttng_krp
;
373 struct lttng_uprobe uprobe
;
375 enum lttng_syscall_entryexit entryexit
;
376 enum lttng_syscall_abi abi
;
377 struct hlist_node node
; /* chain registered syscall event */
380 struct list_head list
; /* Event list in session */
381 unsigned int metadata_dumped
:1;
383 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
384 struct list_head enablers_ref_head
;
385 struct hlist_node name_hlist
; /* session ht of events, per event name */
386 struct hlist_node key_hlist
; /* session ht of events, per key */
387 int registered
; /* has reg'd tracepoint probe */
388 /* list of struct lttng_bytecode_runtime, sorted by seqnum */
389 struct list_head filter_bytecode_runtime_head
;
390 int has_enablers_without_bytecode
;
392 /* List node of actions to perform (for syscall events). */
393 struct hlist_node action_list
;
395 char key
[LTTNG_KEY_TOKEN_STRING_LEN_MAX
];
398 * For non-coalesce-hit event containers, each event is
399 * associated with a single event enabler user_token.
404 struct lttng_kernel_notifier_ctx
{
408 // FIXME: Really similar to lttng_event above. Could those be merged ?
409 struct lttng_event_notifier
{
410 enum lttng_event_type evtype
; /* First field. */
412 uint64_t error_counter_index
;
414 int registered
; /* has reg'd tracepoint probe */
415 const struct lttng_event_desc
*desc
;
417 struct list_head list
; /* event_notifier list in event_notifier group */
419 enum lttng_kernel_instrumentation instrumentation
;
421 struct lttng_kprobe kprobe
;
422 struct lttng_uprobe uprobe
;
424 enum lttng_syscall_entryexit entryexit
;
425 enum lttng_syscall_abi abi
;
426 struct hlist_node node
; /* chain registered syscall event_notifier */
427 unsigned int syscall_id
;
432 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
433 struct list_head enablers_ref_head
;
434 struct hlist_node hlist
; /* session ht of event_notifiers */
435 /* list of struct lttng_bytecode_runtime, sorted by seqnum */
436 struct list_head filter_bytecode_runtime_head
;
438 struct list_head capture_bytecode_runtime_head
;
439 int has_enablers_without_bytecode
;
440 int eval_capture
; /* Should evaluate capture */
442 void (*send_notification
)(struct lttng_event_notifier
*event_notifier
,
443 struct lttng_probe_ctx
*lttng_probe_ctx
,
444 const char *interpreter_stack_data
,
445 struct lttng_kernel_notifier_ctx
*notif_ctx
);
446 struct lttng_event_notifier_group
*group
; /* Weak ref */
449 enum lttng_enabler_format_type
{
450 LTTNG_ENABLER_FORMAT_STAR_GLOB
,
451 LTTNG_ENABLER_FORMAT_NAME
,
455 * Enabler field, within whatever object is enabling an event. Target of
456 * backward reference.
458 struct lttng_enabler
{
459 enum lttng_event_type evtype
; /* First field. */
461 enum lttng_enabler_format_type format_type
;
463 /* head list of struct lttng_bytecode_node */
464 struct list_head filter_bytecode_head
;
466 struct lttng_kernel_event event_param
;
467 unsigned int enabled
:1;
469 uint64_t user_token
; /* User-provided token. */
472 struct lttng_event_enabler
{
473 struct lttng_enabler base
;
474 struct list_head node
; /* per-session list of enablers */
475 struct lttng_event_container
*container
;
476 struct lttng_counter_key key
;
478 * Unused, but kept around to make it explicit that the tracer can do
481 struct lttng_ctx
*ctx
;
484 struct lttng_event_notifier_enabler
{
485 struct lttng_enabler base
;
486 uint64_t error_counter_index
;
487 struct list_head node
; /* List of event_notifier enablers */
488 struct lttng_event_notifier_group
*group
;
490 /* head list of struct lttng_bytecode_node */
491 struct list_head capture_bytecode_head
;
492 uint64_t num_captures
;
497 struct lttng_enabler
*lttng_event_enabler_as_enabler(
498 struct lttng_event_enabler
*event_enabler
)
500 return &event_enabler
->base
;
504 struct lttng_enabler
*lttng_event_notifier_enabler_as_enabler(
505 struct lttng_event_notifier_enabler
*event_notifier_enabler
)
507 return &event_notifier_enabler
->base
;
510 struct lttng_channel_ops
{
511 struct channel
*(*channel_create
)(const char *name
,
514 size_t subbuf_size
, size_t num_subbuf
,
515 unsigned int switch_timer_interval
,
516 unsigned int read_timer_interval
);
517 void (*channel_destroy
)(struct channel
*chan
);
518 struct lib_ring_buffer
*(*buffer_read_open
)(struct channel
*chan
);
519 int (*buffer_has_read_closed_stream
)(struct channel
*chan
);
520 void (*buffer_read_close
)(struct lib_ring_buffer
*buf
);
521 int (*event_reserve
)(struct lib_ring_buffer_ctx
*ctx
,
523 void (*event_commit
)(struct lib_ring_buffer_ctx
*ctx
);
524 void (*event_write
)(struct lib_ring_buffer_ctx
*ctx
, const void *src
,
526 void (*event_write_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
527 const void *src
, size_t len
);
528 void (*event_memset
)(struct lib_ring_buffer_ctx
*ctx
,
530 void (*event_strcpy
)(struct lib_ring_buffer_ctx
*ctx
, const char *src
,
532 void (*event_strcpy_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
533 const char __user
*src
, size_t len
);
535 * packet_avail_size returns the available size in the current
536 * packet. Note that the size returned is only a hint, since it
537 * may change due to concurrent writes.
539 size_t (*packet_avail_size
)(struct channel
*chan
);
540 wait_queue_head_t
*(*get_writer_buf_wait_queue
)(struct channel
*chan
, int cpu
);
541 wait_queue_head_t
*(*get_hp_wait_queue
)(struct channel
*chan
);
542 int (*is_finalized
)(struct channel
*chan
);
543 int (*is_disabled
)(struct channel
*chan
);
544 int (*timestamp_begin
) (const struct lib_ring_buffer_config
*config
,
545 struct lib_ring_buffer
*bufb
,
546 uint64_t *timestamp_begin
);
547 int (*timestamp_end
) (const struct lib_ring_buffer_config
*config
,
548 struct lib_ring_buffer
*bufb
,
549 uint64_t *timestamp_end
);
550 int (*events_discarded
) (const struct lib_ring_buffer_config
*config
,
551 struct lib_ring_buffer
*bufb
,
552 uint64_t *events_discarded
);
553 int (*content_size
) (const struct lib_ring_buffer_config
*config
,
554 struct lib_ring_buffer
*bufb
,
555 uint64_t *content_size
);
556 int (*packet_size
) (const struct lib_ring_buffer_config
*config
,
557 struct lib_ring_buffer
*bufb
,
558 uint64_t *packet_size
);
559 int (*stream_id
) (const struct lib_ring_buffer_config
*config
,
560 struct lib_ring_buffer
*bufb
,
561 uint64_t *stream_id
);
562 int (*current_timestamp
) (const struct lib_ring_buffer_config
*config
,
563 struct lib_ring_buffer
*bufb
,
565 int (*sequence_number
) (const struct lib_ring_buffer_config
*config
,
566 struct lib_ring_buffer
*bufb
,
568 int (*instance_id
) (const struct lib_ring_buffer_config
*config
,
569 struct lib_ring_buffer
*bufb
,
573 struct lttng_counter_ops
{
574 struct lib_counter
*(*counter_create
)(size_t nr_dimensions
,
575 const size_t *max_nr_elem
, /* for each dimension */
576 int64_t global_sum_step
);
577 void (*counter_destroy
)(struct lib_counter
*counter
);
578 int (*counter_add
)(struct lib_counter
*counter
, const size_t *dimension_indexes
,
581 * counter_read reads a specific cpu's counter if @cpu >= 0, or
582 * the global aggregation counter if @cpu == -1.
584 int (*counter_read
)(struct lib_counter
*counter
, const size_t *dimension_indexes
, int cpu
,
585 int64_t *value
, bool *overflow
, bool *underflow
);
587 * counter_aggregate returns the total sum of all per-cpu counters and
588 * the global aggregation counter.
590 int (*counter_aggregate
)(struct lib_counter
*counter
, const size_t *dimension_indexes
,
591 int64_t *value
, bool *overflow
, bool *underflow
);
592 int (*counter_clear
)(struct lib_counter
*counter
, const size_t *dimension_indexes
);
595 struct lttng_transport
{
597 struct module
*owner
;
598 struct list_head node
;
599 struct lttng_channel_ops ops
;
602 struct lttng_counter_transport
{
604 struct module
*owner
;
605 struct list_head node
;
606 struct lttng_counter_ops ops
;
609 struct lttng_syscall_filter
;
611 #define LTTNG_EVENT_HT_BITS 12
612 #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
614 struct lttng_event_ht
{
615 struct hlist_head table
[LTTNG_EVENT_HT_SIZE
];
618 #define LTTNG_EVENT_NOTIFIER_HT_BITS 12
619 #define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS)
621 struct lttng_event_notifier_ht
{
622 struct hlist_head table
[LTTNG_EVENT_NOTIFIER_HT_SIZE
];
625 enum lttng_event_container_type
{
626 LTTNG_EVENT_CONTAINER_CHANNEL
,
627 LTTNG_EVENT_CONTAINER_COUNTER
,
631 * An event can be contained within either a channel or a counter.
633 struct lttng_event_container
{
634 enum lttng_event_container_type type
;
636 struct file
*file
; /* File associated to event container */
637 struct lttng_session
*session
; /* Session containing the container */
639 struct hlist_head
*sc_table
; /* for syscall tracing */
640 struct hlist_head
*compat_sc_table
;
641 struct hlist_head
*sc_exit_table
; /* for syscall exit tracing */
642 struct hlist_head
*compat_sc_exit_table
;
645 * Combining all unknown syscall events works as long as they
646 * are only matched by "all" syscalls enablers, but will require
647 * a design change when we allow matching by syscall number, for
648 * instance by allocating sc_tables accomodating NR_syscalls
651 struct hlist_head sc_unknown
; /* for unknown syscalls */
652 struct hlist_head sc_compat_unknown
;
653 struct hlist_head sc_exit_unknown
;
654 struct hlist_head compat_sc_exit_unknown
;
656 struct lttng_syscall_filter
*sc_filter
;
657 int syscall_all_entry
;
658 int syscall_all_exit
;
659 unsigned int sys_enter_registered
:1,
660 sys_exit_registered
:1,
661 tstate
:1; /* Transient enable state */
665 struct lttng_channel
{
667 struct channel
*chan
; /* Channel buffers */
668 struct lttng_ctx
*ctx
;
669 /* Event ID management */
670 unsigned int free_event_id
; /* Next event ID to allocate */
671 struct list_head list
; /* Channel list */
672 struct lttng_channel_ops
*ops
;
673 struct lttng_transport
*transport
;
674 int header_type
; /* 0: unset, 1: compact, 2: large */
675 enum channel_type channel_type
;
676 unsigned int metadata_dumped
:1;
678 struct lttng_event_container parent
;
681 struct lttng_metadata_stream
{
682 void *priv
; /* Ring buffer private data */
683 struct lttng_metadata_cache
*metadata_cache
;
684 unsigned int metadata_in
; /* Bytes read from the cache */
685 unsigned int metadata_out
; /* Bytes consumed from stream */
686 int finalized
; /* Has channel been finalized */
687 wait_queue_head_t read_wait
; /* Reader buffer-level wait queue */
688 struct list_head list
; /* Stream list */
689 struct lttng_transport
*transport
;
690 uint64_t version
; /* Current version of the metadata cache */
691 bool coherent
; /* Stream in a coherent state */
694 #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
696 struct lttng_dynamic_len_stack
{
697 size_t stack
[LTTNG_DYNAMIC_LEN_STACK_SIZE
];
701 DECLARE_PER_CPU(struct lttng_dynamic_len_stack
, lttng_dynamic_len_stack
);
704 * struct lttng_id_tracker declared in header due to deferencing of *v
705 * in RCU_INITIALIZER(v).
707 #define LTTNG_ID_HASH_BITS 6
708 #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS)
721 struct lttng_id_tracker_rcu
{
722 struct hlist_head id_hash
[LTTNG_ID_TABLE_SIZE
];
725 struct lttng_id_tracker
{
726 struct lttng_session
*session
;
727 enum tracker_type tracker_type
;
728 struct lttng_id_tracker_rcu
*p
; /* RCU dereferenced. */
731 struct lttng_id_hash_node
{
732 struct hlist_node hlist
;
736 struct lttng_session
{
737 int active
; /* Is trace session active ? */
738 int been_active
; /* Has trace session been active ? */
739 struct file
*file
; /* File associated to session */
740 struct list_head chan
; /* Channel list head */
741 struct list_head events
; /* Event list head */
742 struct list_head counters
; /* Counters list head */
743 struct list_head list
; /* Session list */
744 unsigned int free_chan_id
; /* Next chan ID to allocate */
745 uuid_le uuid
; /* Trace session unique ID */
746 struct lttng_metadata_cache
*metadata_cache
;
747 struct lttng_id_tracker pid_tracker
;
748 struct lttng_id_tracker vpid_tracker
;
749 struct lttng_id_tracker uid_tracker
;
750 struct lttng_id_tracker vuid_tracker
;
751 struct lttng_id_tracker gid_tracker
;
752 struct lttng_id_tracker vgid_tracker
;
753 unsigned int metadata_dumped
:1,
754 tstate
:1; /* Transient enable state */
755 /* List of event enablers */
756 struct list_head enablers_head
;
757 /* Hash table of events indexed by event name */
758 struct lttng_event_ht events_name_ht
;
759 /* Hash table of events indexed by key */
760 struct lttng_event_ht events_key_ht
;
761 char name
[LTTNG_KERNEL_SESSION_NAME_LEN
];
762 char creation_time
[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN
];
765 struct lttng_counter_map_descriptor
{
768 char key
[LTTNG_KERNEL_COUNTER_KEY_LEN
];
771 struct lttng_counter_map
{
772 struct lttng_counter_map_descriptor
*descriptors
;
773 size_t nr_descriptors
;
775 struct mutex lock
; /* counter map lock */
778 struct lttng_counter
{
780 struct lttng_counter_transport
*transport
;
781 struct lib_counter
*counter
;
782 struct lttng_counter_ops
*ops
;
783 struct list_head node
; /* Counter list (in session) */
785 size_t free_index
; /* Next index to allocate */
786 struct lttng_counter_map map
;
788 struct lttng_event_container parent
;
791 struct lttng_event_notifier_group
{
792 struct file
*file
; /* File associated to event notifier group */
793 struct file
*notif_file
; /* File used to expose notifications to userspace. */
794 struct list_head node
; /* event notifier group list */
795 struct list_head enablers_head
; /* List of enablers */
796 struct list_head event_notifiers_head
; /* List of event notifier */
797 struct lttng_event_notifier_ht event_notifiers_ht
; /* Hash table of event notifiers */
798 struct lttng_ctx
*ctx
; /* Contexts for filters. */
799 struct lttng_channel_ops
*ops
;
800 struct lttng_transport
*transport
;
801 struct channel
*chan
; /* Ring buffer channel for event notifier group. */
802 struct lib_ring_buffer
*buf
; /* Ring buffer for event notifier group. */
803 wait_queue_head_t read_wait
;
804 struct irq_work wakeup_pending
; /* Pending wakeup irq work. */
805 struct lttng_event_notifier
*sc_unknown
; /* for unknown syscalls */
806 struct lttng_event_notifier
*sc_compat_unknown
;
808 struct lttng_syscall_filter
*sc_filter
;
810 struct hlist_head
*event_notifier_syscall_dispatch
;
811 struct hlist_head
*event_notifier_compat_syscall_dispatch
;
812 struct hlist_head
*event_notifier_exit_syscall_dispatch
;
813 struct hlist_head
*event_notifier_exit_compat_syscall_dispatch
;
815 struct hlist_head event_notifier_unknown_syscall_dispatch
;
816 struct hlist_head event_notifier_compat_unknown_syscall_dispatch
;
817 struct hlist_head event_notifier_exit_unknown_syscall_dispatch
;
818 struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch
;
820 int syscall_all_entry
;
821 int syscall_all_exit
;
823 unsigned int sys_enter_registered
:1, sys_exit_registered
:1;
825 struct lttng_counter
*error_counter
;
826 size_t error_counter_len
;
829 struct lttng_metadata_cache
{
830 char *data
; /* Metadata cache */
831 unsigned int cache_alloc
; /* Metadata allocated size (bytes) */
832 unsigned int metadata_written
; /* Number of bytes written in metadata cache */
833 atomic_t producing
; /* Metadata being produced (incomplete) */
834 struct kref refcount
; /* Metadata cache usage */
835 struct list_head metadata_stream
; /* Metadata stream list */
836 uuid_le uuid
; /* Trace session unique ID (copy) */
837 struct mutex lock
; /* Produce/consume lock */
838 uint64_t version
; /* Current version of the metadata */
842 struct lttng_event_container
*lttng_channel_get_event_container(struct lttng_channel
*channel
)
844 return &channel
->parent
;
848 struct lttng_event_container
*lttng_counter_get_event_container(struct lttng_counter
*counter
)
850 return &counter
->parent
;
854 struct lttng_channel
*lttng_event_container_get_channel(struct lttng_event_container
*container
)
856 if (container
->type
!= LTTNG_EVENT_CONTAINER_CHANNEL
)
858 return container_of(container
, struct lttng_channel
, parent
);
862 struct lttng_counter
*lttng_event_container_get_counter(struct lttng_event_container
*container
)
864 if (container
->type
!= LTTNG_EVENT_CONTAINER_COUNTER
)
866 return container_of(container
, struct lttng_counter
, parent
);
869 void lttng_lock_sessions(void);
870 void lttng_unlock_sessions(void);
872 struct list_head
*lttng_get_probe_list_head(void);
874 struct lttng_event_enabler
*lttng_event_enabler_create(
875 enum lttng_enabler_format_type format_type
,
876 struct lttng_kernel_event
*event_param
,
877 const struct lttng_counter_key
*key
,
878 struct lttng_event_container
*container
);
880 int lttng_event_enabler_enable(struct lttng_event_enabler
*event_enabler
);
881 int lttng_event_enabler_disable(struct lttng_event_enabler
*event_enabler
);
882 struct lttng_event_notifier_enabler
*lttng_event_notifier_enabler_create(
883 struct lttng_event_notifier_group
*event_notifier_group
,
884 enum lttng_enabler_format_type format_type
,
885 struct lttng_kernel_event_notifier
*event_notifier_param
);
887 int lttng_event_notifier_enabler_enable(
888 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
889 int lttng_event_notifier_enabler_disable(
890 struct lttng_event_notifier_enabler
*event_notifier_enabler
);
891 int lttng_fix_pending_events(void);
892 int lttng_fix_pending_event_notifiers(void);
893 int lttng_session_active(void);
894 bool lttng_event_notifier_active(void);
896 struct lttng_session
*lttng_session_create(void);
897 int lttng_session_enable(struct lttng_session
*session
);
898 int lttng_session_disable(struct lttng_session
*session
);
899 void lttng_session_destroy(struct lttng_session
*session
);
900 int lttng_session_metadata_regenerate(struct lttng_session
*session
);
901 int lttng_session_statedump(struct lttng_session
*session
);
902 void metadata_cache_destroy(struct kref
*kref
);
904 int lttng_kernel_counter_read(struct lttng_counter
*counter
,
905 const size_t *dimension_indexes
, int32_t cpu
,
906 int64_t *val
, bool *overflow
, bool *underflow
);
907 int lttng_kernel_counter_aggregate(struct lttng_counter
*counter
,
908 const size_t *dimension_indexes
, int64_t *val
,
909 bool *overflow
, bool *underflow
);
910 int lttng_kernel_counter_clear(struct lttng_counter
*counter
,
911 const size_t *dimension_indexes
);
914 struct lttng_event_notifier_group
*lttng_event_notifier_group_create(void);
915 int lttng_event_notifier_group_create_error_counter(
916 struct file
*event_notifier_group_file
,
917 const struct lttng_kernel_counter_conf
*error_counter_conf
);
919 void lttng_event_notifier_group_destroy(
920 struct lttng_event_notifier_group
*event_notifier_group
);
921 int lttng_event_notifier_group_set_error_counter(
922 struct lttng_event_notifier_group
*event_notifier_group
,
923 const char *counter_transport_name
,
926 struct lttng_channel
*lttng_channel_create(struct lttng_session
*session
,
927 const char *transport_name
,
929 size_t subbuf_size
, size_t num_subbuf
,
930 unsigned int switch_timer_interval
,
931 unsigned int read_timer_interval
,
932 enum channel_type channel_type
);
934 void lttng_metadata_channel_destroy(struct lttng_channel
*chan
);
935 struct lttng_event
*lttng_event_create(struct lttng_event_container
*container
,
936 struct lttng_kernel_event
*event_param
,
937 const struct lttng_counter_key
*key
,
939 const struct lttng_event_desc
*event_desc
,
940 enum lttng_kernel_instrumentation itype
,
941 uint64_t user_token
);
942 struct lttng_event
*_lttng_event_create(struct lttng_event_container
*container
,
943 struct lttng_kernel_event
*event_param
,
944 const struct lttng_counter_key
*key
,
946 const struct lttng_event_desc
*event_desc
,
947 enum lttng_kernel_instrumentation itype
,
948 uint64_t user_token
);
949 struct lttng_counter
*lttng_session_create_counter(
950 struct lttng_session
*session
,
951 const char *counter_transport_name
,
952 size_t number_dimensions
, const size_t *dimensions_sizes
,
955 struct lttng_event_notifier
*lttng_event_notifier_create(
956 const struct lttng_event_desc
*event_notifier_desc
,
958 uint64_t error_counter_idx
,
959 struct lttng_event_notifier_group
*event_notifier_group
,
960 struct lttng_kernel_event_notifier
*event_notifier_param
,
962 enum lttng_kernel_instrumentation itype
);
963 struct lttng_event_notifier
*_lttng_event_notifier_create(
964 const struct lttng_event_desc
*event_notifier_desc
,
966 uint64_t error_counter_idx
,
967 struct lttng_event_notifier_group
*event_notifier_group
,
968 struct lttng_kernel_event_notifier
*event_notifier_param
,
970 enum lttng_kernel_instrumentation itype
);
972 int lttng_event_container_enable(struct lttng_event_container
*container
);
973 int lttng_event_container_disable(struct lttng_event_container
*container
);
974 int lttng_event_enable(struct lttng_event
*event
);
975 int lttng_event_disable(struct lttng_event
*event
);
977 int lttng_event_notifier_enable(struct lttng_event_notifier
*event_notifier
);
978 int lttng_event_notifier_disable(struct lttng_event_notifier
*event_notifier
);
980 void lttng_transport_register(struct lttng_transport
*transport
);
981 void lttng_transport_unregister(struct lttng_transport
*transport
);
983 void lttng_counter_transport_register(struct lttng_counter_transport
*transport
);
984 void lttng_counter_transport_unregister(struct lttng_counter_transport
*transport
);
986 void synchronize_trace(void);
987 int lttng_abi_init(void);
988 int lttng_abi_compat_old_init(void);
989 void lttng_abi_exit(void);
990 void lttng_abi_compat_old_exit(void);
992 int lttng_probe_register(struct lttng_probe_desc
*desc
);
993 void lttng_probe_unregister(struct lttng_probe_desc
*desc
);
994 const struct lttng_event_desc
*lttng_event_desc_get(const char *name
);
995 void lttng_event_desc_put(const struct lttng_event_desc
*desc
);
996 int lttng_probes_init(void);
997 void lttng_probes_exit(void);
999 int lttng_metadata_output_channel(struct lttng_metadata_stream
*stream
,
1000 struct channel
*chan
, bool *coherent
);
1002 int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node
*node
);
1003 int lttng_id_tracker_empty_set(struct lttng_id_tracker
*lf
);
1004 void lttng_id_tracker_destroy(struct lttng_id_tracker
*lf
, bool rcu
);
1005 bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu
*p
, int id
);
1006 int lttng_id_tracker_add(struct lttng_id_tracker
*lf
, int id
);
1007 int lttng_id_tracker_del(struct lttng_id_tracker
*lf
, int id
);
1009 int lttng_session_track_id(struct lttng_session
*session
,
1010 enum tracker_type tracker_type
, int id
);
1011 int lttng_session_untrack_id(struct lttng_session
*session
,
1012 enum tracker_type tracker_type
, int id
);
1014 int lttng_session_list_tracker_ids(struct lttng_session
*session
,
1015 enum tracker_type tracker_type
);
1017 void lttng_clock_ref(void);
1018 void lttng_clock_unref(void);
1020 int lttng_desc_match_enabler(const struct lttng_event_desc
*desc
,
1021 struct lttng_enabler
*enabler
);
1023 #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
1024 int lttng_syscalls_register_event(struct lttng_event_enabler
*event_enabler
, void *filter
);
1025 int lttng_syscalls_unregister_event_container(struct lttng_event_container
*event_container
);
1026 int lttng_syscalls_destroy_event_container(struct lttng_event_container
*container
);
1027 int lttng_syscall_filter_enable_event(struct lttng_event_container
*container
,
1028 struct lttng_event
*event
);
1029 int lttng_syscall_filter_disable_event(struct lttng_event_container
*container
,
1030 struct lttng_event
*event
);
1031 long lttng_event_container_syscall_mask(struct lttng_event_container
*container
,
1032 struct lttng_kernel_syscall_mask __user
*usyscall_mask
);
1034 int lttng_syscalls_register_event_notifier(
1035 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
1037 int lttng_syscals_create_matching_event_notifiers(
1038 struct lttng_event_notifier_enabler
*event_notifier_enabler
, void *filter
);
1039 int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group
*group
);
1040 int lttng_syscall_filter_enable_event_notifier(struct lttng_event_notifier
*event_notifier
);
1041 int lttng_syscall_filter_disable_event_notifier(struct lttng_event_notifier
*event_notifier
);
1043 static inline int lttng_syscalls_register_event(
1044 struct lttng_event_enabler
*event_enabler
, void *filter
)
1049 static inline int lttng_syscalls_unregister_event_container(struct lttng_event_container
*event_container
)
1054 static inline int lttng_syscalls_destroy_event_container(struct lttng_event_container
*event_container
)
1059 static inline int lttng_syscall_filter_enable_event(struct lttng_event_container
*event_container
,
1060 struct lttng_event
*event
);
1065 static inline int lttng_syscall_filter_disable_event(struct lttng_event_container
*event_container
,
1066 struct lttng_event
*event
);
1071 static inline long lttng_channel_syscall_mask(struct lttng_event_container
*event_container
,
1072 struct lttng_kernel_syscall_mask __user
*usyscall_mask
)
1077 static inline int lttng_syscalls_register_event_notifier(
1078 struct lttng_event_notifier_group
*group
, void *filter
)
1083 static inline int lttng_syscalls_unregister_event_notifier_group(
1084 struct lttng_event_notifier_group
*group
)
1089 static inline int lttng_syscall_filter_enable_event_notifier(
1090 struct lttng_event_notifier_group
*group
,
1096 static inline int lttng_syscall_filter_disable_event_notifier(
1097 struct lttng_event_notifier_group
*group
,
1105 int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler
*event_enabler
,
1106 struct lttng_kernel_filter_bytecode __user
*bytecode
);
1107 int lttng_event_notifier_enabler_attach_filter_bytecode(
1108 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
1109 struct lttng_kernel_filter_bytecode __user
*bytecode
);
1110 int lttng_event_notifier_enabler_attach_capture_bytecode(
1111 struct lttng_event_notifier_enabler
*event_notifier_enabler
,
1112 struct lttng_kernel_capture_bytecode __user
*bytecode
);
1114 void lttng_enabler_link_bytecode(const struct lttng_event_desc
*event_desc
,
1115 struct lttng_ctx
*ctx
,
1116 struct list_head
*instance_bytecode_runtime_head
,
1117 struct list_head
*enabler_bytecode_runtime_head
);
1118 void lttng_free_event_filter_runtime(struct lttng_event
*event
);
1119 void lttng_free_event_notifier_filter_runtime(struct lttng_event_notifier
*event_notifier
);
1121 int lttng_probes_init(void);
1123 extern struct lttng_ctx
*lttng_static_ctx
;
1125 int lttng_context_init(void);
1126 void lttng_context_exit(void);
1127 struct lttng_ctx_field
*lttng_append_context(struct lttng_ctx
**ctx
);
1128 ssize_t
lttng_append_context_index(struct lttng_ctx
**ctx_p
);
1129 struct lttng_ctx_field
*lttng_get_context_field_from_index(struct lttng_ctx
*ctx
,
1131 void lttng_context_update(struct lttng_ctx
*ctx
);
1132 int lttng_find_context(struct lttng_ctx
*ctx
, const char *name
);
1133 int lttng_get_context_index(struct lttng_ctx
*ctx
, const char *name
);
1134 void lttng_remove_context_field(struct lttng_ctx
**ctx
,
1135 struct lttng_ctx_field
*field
);
1136 void lttng_remove_context_field_index(struct lttng_ctx
**ctx_p
, size_t index
);
1137 void lttng_destroy_context(struct lttng_ctx
*ctx
);
1138 int lttng_add_pid_to_ctx(struct lttng_ctx
**ctx
);
1139 int lttng_add_cpu_id_to_ctx(struct lttng_ctx
**ctx
);
1140 int lttng_add_procname_to_ctx(struct lttng_ctx
**ctx
);
1141 int lttng_add_prio_to_ctx(struct lttng_ctx
**ctx
);
1142 int lttng_add_nice_to_ctx(struct lttng_ctx
**ctx
);
1143 int lttng_add_vpid_to_ctx(struct lttng_ctx
**ctx
);
1144 int lttng_add_tid_to_ctx(struct lttng_ctx
**ctx
);
1145 int lttng_add_vtid_to_ctx(struct lttng_ctx
**ctx
);
1146 int lttng_add_ppid_to_ctx(struct lttng_ctx
**ctx
);
1147 int lttng_add_vppid_to_ctx(struct lttng_ctx
**ctx
);
1148 int lttng_add_hostname_to_ctx(struct lttng_ctx
**ctx
);
1149 int lttng_add_interruptible_to_ctx(struct lttng_ctx
**ctx
);
1150 int lttng_add_need_reschedule_to_ctx(struct lttng_ctx
**ctx
);
1151 #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
1152 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
);
1155 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
)
1160 #ifdef CONFIG_PREEMPT_RT_FULL
1161 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
);
1164 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
)
1170 int lttng_add_callstack_to_ctx(struct lttng_ctx
**ctx
, int type
);
1172 #if defined(CONFIG_CGROUPS) && \
1173 ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \
1174 LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
1175 int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx
**ctx
);
1178 int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx
**ctx
)
1184 #if defined(CONFIG_IPC_NS) && \
1185 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1186 int lttng_add_ipc_ns_to_ctx(struct lttng_ctx
**ctx
);
1189 int lttng_add_ipc_ns_to_ctx(struct lttng_ctx
**ctx
)
1195 #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
1196 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1197 int lttng_add_mnt_ns_to_ctx(struct lttng_ctx
**ctx
);
1200 int lttng_add_mnt_ns_to_ctx(struct lttng_ctx
**ctx
)
1206 #if defined(CONFIG_NET_NS) && \
1207 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1208 int lttng_add_net_ns_to_ctx(struct lttng_ctx
**ctx
);
1211 int lttng_add_net_ns_to_ctx(struct lttng_ctx
**ctx
)
1217 #if defined(CONFIG_PID_NS) && \
1218 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1219 int lttng_add_pid_ns_to_ctx(struct lttng_ctx
**ctx
);
1222 int lttng_add_pid_ns_to_ctx(struct lttng_ctx
**ctx
)
1228 #if defined(CONFIG_USER_NS) && \
1229 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1230 int lttng_add_user_ns_to_ctx(struct lttng_ctx
**ctx
);
1233 int lttng_add_user_ns_to_ctx(struct lttng_ctx
**ctx
)
1239 #if defined(CONFIG_UTS_NS) && \
1240 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
1241 int lttng_add_uts_ns_to_ctx(struct lttng_ctx
**ctx
);
1244 int lttng_add_uts_ns_to_ctx(struct lttng_ctx
**ctx
)
1250 #if defined(CONFIG_TIME_NS) && \
1251 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
1252 int lttng_add_time_ns_to_ctx(struct lttng_ctx
**ctx
);
1255 int lttng_add_time_ns_to_ctx(struct lttng_ctx
**ctx
)
1261 int lttng_add_uid_to_ctx(struct lttng_ctx
**ctx
);
1262 int lttng_add_euid_to_ctx(struct lttng_ctx
**ctx
);
1263 int lttng_add_suid_to_ctx(struct lttng_ctx
**ctx
);
1264 int lttng_add_gid_to_ctx(struct lttng_ctx
**ctx
);
1265 int lttng_add_egid_to_ctx(struct lttng_ctx
**ctx
);
1266 int lttng_add_sgid_to_ctx(struct lttng_ctx
**ctx
);
1267 int lttng_add_vuid_to_ctx(struct lttng_ctx
**ctx
);
1268 int lttng_add_veuid_to_ctx(struct lttng_ctx
**ctx
);
1269 int lttng_add_vsuid_to_ctx(struct lttng_ctx
**ctx
);
1270 int lttng_add_vgid_to_ctx(struct lttng_ctx
**ctx
);
1271 int lttng_add_vegid_to_ctx(struct lttng_ctx
**ctx
);
1272 int lttng_add_vsgid_to_ctx(struct lttng_ctx
**ctx
);
1274 #if defined(CONFIG_PERF_EVENTS)
1275 int lttng_add_perf_counter_to_ctx(uint32_t type
,
1278 struct lttng_ctx
**ctx
);
1279 int lttng_cpuhp_perf_counter_online(unsigned int cpu
,
1280 struct lttng_cpuhp_node
*node
);
1281 int lttng_cpuhp_perf_counter_dead(unsigned int cpu
,
1282 struct lttng_cpuhp_node
*node
);
1285 int lttng_add_perf_counter_to_ctx(uint32_t type
,
1288 struct lttng_ctx
**ctx
)
1293 int lttng_cpuhp_perf_counter_online(unsigned int cpu
,
1294 struct lttng_cpuhp_node
*node
)
1299 int lttng_cpuhp_perf_counter_dead(unsigned int cpu
,
1300 struct lttng_cpuhp_node
*node
)
1306 int lttng_logger_init(void);
1307 void lttng_logger_exit(void);
1309 extern int lttng_statedump_start(struct lttng_session
*session
);
1311 #ifdef CONFIG_KPROBES
1312 int lttng_kprobes_register_event(const char *name
,
1313 const char *symbol_name
,
1316 struct lttng_event
*event
);
1317 void lttng_kprobes_unregister_event(struct lttng_event
*event
);
1318 void lttng_kprobes_destroy_event_private(struct lttng_event
*event
);
1319 int lttng_kprobes_register_event_notifier(const char *symbol_name
,
1322 struct lttng_event_notifier
*event_notifier
);
1323 void lttng_kprobes_unregister_event_notifier(struct lttng_event_notifier
*event_notifier
);
1324 void lttng_kprobes_destroy_event_notifier_private(struct lttng_event_notifier
*event_notifier
);
1327 int lttng_kprobes_register_event(const char *name
,
1328 const char *symbol_name
,
1331 struct lttng_event
*event
)
1337 void lttng_kprobes_unregister_event(struct lttng_event
*event
)
1342 void lttng_kprobes_destroy_event_private(struct lttng_event
*event
)
1347 int lttng_kprobes_register_event_notifier(const char *symbol_name
,
1350 struct lttng_event_notifier
*event_notifier
)
1356 void lttng_kprobes_unregister_event_notifier(struct lttng_event_notifier
*event_notifier
)
1361 void lttng_kprobes_destroy_event_notifier_private(struct lttng_event_notifier
*event_notifier
)
1366 int lttng_event_add_callsite(struct lttng_event
*event
,
1367 struct lttng_kernel_event_callsite
*callsite
);
1369 int lttng_event_notifier_add_callsite(struct lttng_event_notifier
*event_notifier
,
1370 struct lttng_kernel_event_callsite
*callsite
);
1372 #ifdef CONFIG_UPROBES
1373 int lttng_uprobes_register_event(const char *name
,
1374 int fd
, struct lttng_event
*event
);
1375 int lttng_uprobes_event_add_callsite(struct lttng_event
*event
,
1376 struct lttng_kernel_event_callsite
*callsite
);
1377 void lttng_uprobes_unregister_event(struct lttng_event
*event
);
1378 void lttng_uprobes_destroy_event_private(struct lttng_event
*event
);
1379 int lttng_uprobes_register_event_notifier(const char *name
,
1380 int fd
, struct lttng_event_notifier
*event_notifier
);
1381 int lttng_uprobes_event_notifier_add_callsite(struct lttng_event_notifier
*event_notifier
,
1382 struct lttng_kernel_event_callsite
*callsite
);
1383 void lttng_uprobes_unregister_event_notifier(struct lttng_event_notifier
*event_notifier
);
1384 void lttng_uprobes_destroy_event_notifier_private(struct lttng_event_notifier
*event_notifier
);
1387 int lttng_uprobes_register_event(const char *name
,
1388 int fd
, struct lttng_event
*event
)
1394 int lttng_uprobes_event_add_callsite(struct lttng_event
*event
,
1395 struct lttng_kernel_event_callsite
*callsite
)
1401 void lttng_uprobes_unregister_event(struct lttng_event
*event
)
1406 void lttng_uprobes_destroy_event_private(struct lttng_event
*event
)
1411 int lttng_uprobes_register_event_notifier(const char *name
,
1412 int fd
, struct lttng_event_notifier
*event_notifier
)
1418 int lttng_uprobes_event_notifier_add_callsite(struct lttng_event_notifier
*event_notifier
,
1419 struct lttng_kernel_event_callsite
*callsite
)
1425 void lttng_uprobes_unregister_event_notifier(struct lttng_event_notifier
*event_notifier
)
1430 void lttng_uprobes_destroy_event_notifier_private(struct lttng_event_notifier
*event_notifier
)
1435 #ifdef CONFIG_KRETPROBES
1436 int lttng_kretprobes_register(const char *name
,
1437 const char *symbol_name
,
1440 struct lttng_event
*event_entry
,
1441 struct lttng_event
*event_exit
);
1442 void lttng_kretprobes_unregister(struct lttng_event
*event
);
1443 void lttng_kretprobes_destroy_private(struct lttng_event
*event
);
1444 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
1448 int lttng_kretprobes_register(const char *name
,
1449 const char *symbol_name
,
1452 struct lttng_event
*event_entry
,
1453 struct lttng_event
*event_exit
)
1459 void lttng_kretprobes_unregister(struct lttng_event
*event
)
1464 void lttng_kretprobes_destroy_private(struct lttng_event
*event
)
1469 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
1476 int lttng_calibrate(struct lttng_kernel_calibrate
*calibrate
);
1478 extern const struct file_operations lttng_tracepoint_list_fops
;
1479 extern const struct file_operations lttng_syscall_list_fops
;
1481 #define TRACEPOINT_HAS_DATA_ARG
1483 static inline bool lttng_is_bytewise_integer(const struct lttng_type
*type
)
1485 if (type
->atype
!= atype_integer
)
1487 switch (type
->u
.integer
.size
) {
1488 case 8: /* Fall-through. */
1489 case 16: /* Fall-through. */
1490 case 32: /* Fall-through. */
1499 #endif /* _LTTNG_EVENTS_H */