1 #ifndef _LTTNG_EVENTS_H
2 #define _LTTNG_EVENTS_H
7 * Holds LTTng per-session event registry.
9 * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; only
14 * version 2.1 of the License.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include <linux/version.h>
27 #include <linux/list.h>
28 #include <linux/kprobes.h>
29 #include <linux/kref.h>
30 #include <wrapper/uuid.h>
31 #include <lttng-tracer.h>
32 #include <lttng-abi.h>
33 #include <lttng-abi-old.h>
35 #define lttng_is_signed_type(type) (((type)(-1)) < 0)
39 struct lttng_metadata_cache
;
40 struct lib_ring_buffer_ctx
;
42 struct perf_event_attr
;
43 struct lib_ring_buffer_config
;
45 /* Type description */
54 atype_array_compound
, /* Array of compound types. */
55 atype_sequence_compound
, /* Sequence of compound types. */
60 enum lttng_string_encodings
{
61 lttng_encode_none
= 0,
62 lttng_encode_UTF8
= 1,
63 lttng_encode_ASCII
= 2,
72 struct lttng_enum_value
{
73 unsigned long long value
;
74 unsigned int signedness
:1;
77 struct lttng_enum_entry
{
78 struct lttng_enum_value start
, end
; /* start and end are inclusive */
82 #define __type_integer(_type, _size, _alignment, _signedness, \
83 _byte_order, _base, _encoding) \
85 .atype = atype_integer, \
88 .size = (_size) ? : sizeof(_type) * CHAR_BIT, \
89 .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \
90 .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \
91 .reverse_byte_order = _byte_order != __BYTE_ORDER, \
93 .encoding = lttng_encode_##_encoding, \
97 struct lttng_integer_type {
98 unsigned int size
; /* in bits */
99 unsigned short alignment
; /* in bits */
100 unsigned int signedness
:1,
101 reverse_byte_order
:1;
102 unsigned int base
; /* 2, 8, 10, 16, for pretty print */
103 enum lttng_string_encodings encoding
;
106 union _lttng_basic_type
{
107 struct lttng_integer_type integer
;
109 const struct lttng_enum_desc
*desc
; /* Enumeration mapping */
110 struct lttng_integer_type container_type
;
113 enum lttng_string_encodings encoding
;
117 struct lttng_basic_type
{
118 enum abstract_types atype
;
120 union _lttng_basic_type basic
;
125 enum abstract_types atype
;
127 union _lttng_basic_type basic
;
129 struct lttng_basic_type elem_type
;
130 unsigned int length
; /* num. elems. */
131 unsigned int elem_alignment
; /* alignment override */
134 struct lttng_basic_type length_type
;
135 struct lttng_basic_type elem_type
;
136 unsigned int elem_alignment
; /* alignment override */
140 struct lttng_event_field
*fields
; /* Array of fields. */
143 struct lttng_type
*elem_type
;
144 unsigned int length
; /* num. elems. */
147 struct lttng_type
*elem_type
;
148 const char *length_name
;
151 const char *tag_name
;
152 struct lttng_event_field
*choices
; /* Array of fields. */
158 struct lttng_enum_desc
{
160 const struct lttng_enum_entry
*entries
;
161 unsigned int nr_entries
;
164 /* Event field description */
166 struct lttng_event_field
{
168 struct lttng_type type
;
169 unsigned int nowrite
:1, /* do not write into trace */
170 user
:1; /* fetch from user-space */
173 union lttng_ctx_value
{
180 * We need to keep this perf counter field separately from struct
181 * lttng_ctx_field because cpu hotplug needs fixed-location addresses.
183 struct lttng_perf_counter_field
{
184 struct notifier_block nb
;
186 struct perf_event_attr
*attr
;
187 struct perf_event
**e
; /* per-cpu array */
190 struct lttng_probe_ctx
{
191 struct lttng_event
*event
;
192 uint8_t interruptible
;
195 struct lttng_ctx_field
{
196 struct lttng_event_field event_field
;
197 size_t (*get_size
)(size_t offset
);
198 void (*record
)(struct lttng_ctx_field
*field
,
199 struct lib_ring_buffer_ctx
*ctx
,
200 struct lttng_channel
*chan
);
201 void (*get_value
)(struct lttng_ctx_field
*field
,
202 struct lttng_probe_ctx
*lttng_probe_ctx
,
203 union lttng_ctx_value
*value
);
205 struct lttng_perf_counter_field
*perf_counter
;
207 void (*destroy
)(struct lttng_ctx_field
*field
);
211 struct lttng_ctx_field
*fields
;
212 unsigned int nr_fields
;
213 unsigned int allocated_fields
;
214 size_t largest_align
; /* in bytes */
217 struct lttng_event_desc
{
218 const char *name
; /* lttng-modules name */
219 const char *kname
; /* Linux kernel name (tracepoints) */
220 void *probe_callback
;
221 const struct lttng_event_ctx
*ctx
; /* context */
222 const struct lttng_event_field
*fields
; /* event payload */
223 unsigned int nr_fields
;
224 struct module
*owner
;
227 struct lttng_probe_desc
{
228 const char *provider
;
229 const struct lttng_event_desc
**event_desc
;
230 unsigned int nr_events
;
231 struct list_head head
; /* chain registered probes */
232 struct list_head lazy_init_head
;
233 int lazy
; /* lazy registration */
236 struct lttng_krp
; /* Kretprobe handling */
238 enum lttng_event_type
{
239 LTTNG_TYPE_EVENT
= 0,
240 LTTNG_TYPE_ENABLER
= 1,
243 struct lttng_filter_bytecode_node
{
244 struct list_head node
;
245 struct lttng_enabler
*enabler
;
247 * struct lttng_kernel_filter_bytecode has var. sized array, must be
250 struct lttng_kernel_filter_bytecode bc
;
254 * Filter return value masks.
256 enum lttng_filter_ret
{
257 LTTNG_FILTER_DISCARD
= 0,
258 LTTNG_FILTER_RECORD_FLAG
= (1ULL << 0),
259 /* Other bits are kept for future use. */
262 struct lttng_bytecode_runtime
{
263 /* Associated bytecode */
264 struct lttng_filter_bytecode_node
*bc
;
265 uint64_t (*filter
)(void *filter_data
, struct lttng_probe_ctx
*lttng_probe_ctx
,
266 const char *filter_stack_data
);
268 struct list_head node
; /* list of bytecode runtime in event */
272 * Objects in a linked-list of enablers, owned by an event.
274 struct lttng_enabler_ref
{
275 struct list_head node
; /* enabler ref list */
276 struct lttng_enabler
*ref
; /* backward ref */
280 * lttng_event structure is referred to by the tracing fast path. It must be
284 enum lttng_event_type evtype
; /* First field. */
286 struct lttng_channel
*chan
;
288 const struct lttng_event_desc
*desc
;
290 struct lttng_ctx
*ctx
;
291 enum lttng_kernel_instrumentation instrumentation
;
298 struct lttng_krp
*lttng_krp
;
305 struct list_head list
; /* Event list in session */
306 unsigned int metadata_dumped
:1;
308 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
309 struct list_head enablers_ref_head
;
310 struct hlist_node hlist
; /* session ht of events */
311 int registered
; /* has reg'd tracepoint probe */
312 /* list of struct lttng_bytecode_runtime, sorted by seqnum */
313 struct list_head bytecode_runtime_head
;
314 int has_enablers_without_bytecode
;
317 enum lttng_enabler_type
{
318 LTTNG_ENABLER_WILDCARD
,
323 * Enabler field, within whatever object is enabling an event. Target of
324 * backward reference.
326 struct lttng_enabler
{
327 enum lttng_event_type evtype
; /* First field. */
329 enum lttng_enabler_type type
;
331 struct list_head node
; /* per-session list of enablers */
332 /* head list of struct lttng_ust_filter_bytecode_node */
333 struct list_head filter_bytecode_head
;
335 struct lttng_kernel_event event_param
;
336 struct lttng_channel
*chan
;
337 struct lttng_ctx
*ctx
;
338 unsigned int enabled
:1;
341 struct lttng_channel_ops
{
342 struct channel
*(*channel_create
)(const char *name
,
343 struct lttng_channel
*lttng_chan
,
345 size_t subbuf_size
, size_t num_subbuf
,
346 unsigned int switch_timer_interval
,
347 unsigned int read_timer_interval
);
348 void (*channel_destroy
)(struct channel
*chan
);
349 struct lib_ring_buffer
*(*buffer_read_open
)(struct channel
*chan
);
350 int (*buffer_has_read_closed_stream
)(struct channel
*chan
);
351 void (*buffer_read_close
)(struct lib_ring_buffer
*buf
);
352 int (*event_reserve
)(struct lib_ring_buffer_ctx
*ctx
,
354 void (*event_commit
)(struct lib_ring_buffer_ctx
*ctx
);
355 void (*event_write
)(struct lib_ring_buffer_ctx
*ctx
, const void *src
,
357 void (*event_write_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
358 const void *src
, size_t len
);
359 void (*event_memset
)(struct lib_ring_buffer_ctx
*ctx
,
361 void (*event_strcpy
)(struct lib_ring_buffer_ctx
*ctx
, const char *src
,
363 void (*event_strcpy_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
364 const char __user
*src
, size_t len
);
366 * packet_avail_size returns the available size in the current
367 * packet. Note that the size returned is only a hint, since it
368 * may change due to concurrent writes.
370 size_t (*packet_avail_size
)(struct channel
*chan
);
371 wait_queue_head_t
*(*get_writer_buf_wait_queue
)(struct channel
*chan
, int cpu
);
372 wait_queue_head_t
*(*get_hp_wait_queue
)(struct channel
*chan
);
373 int (*is_finalized
)(struct channel
*chan
);
374 int (*is_disabled
)(struct channel
*chan
);
375 int (*timestamp_begin
) (const struct lib_ring_buffer_config
*config
,
376 struct lib_ring_buffer
*bufb
,
377 uint64_t *timestamp_begin
);
378 int (*timestamp_end
) (const struct lib_ring_buffer_config
*config
,
379 struct lib_ring_buffer
*bufb
,
380 uint64_t *timestamp_end
);
381 int (*events_discarded
) (const struct lib_ring_buffer_config
*config
,
382 struct lib_ring_buffer
*bufb
,
383 uint64_t *events_discarded
);
384 int (*content_size
) (const struct lib_ring_buffer_config
*config
,
385 struct lib_ring_buffer
*bufb
,
386 uint64_t *content_size
);
387 int (*packet_size
) (const struct lib_ring_buffer_config
*config
,
388 struct lib_ring_buffer
*bufb
,
389 uint64_t *packet_size
);
390 int (*stream_id
) (const struct lib_ring_buffer_config
*config
,
391 struct lib_ring_buffer
*bufb
,
392 uint64_t *stream_id
);
393 int (*current_timestamp
) (const struct lib_ring_buffer_config
*config
,
394 struct lib_ring_buffer
*bufb
,
396 int (*sequence_number
) (const struct lib_ring_buffer_config
*config
,
397 struct lib_ring_buffer
*bufb
,
399 int (*instance_id
) (const struct lib_ring_buffer_config
*config
,
400 struct lib_ring_buffer
*bufb
,
404 struct lttng_transport
{
406 struct module
*owner
;
407 struct list_head node
;
408 struct lttng_channel_ops ops
;
411 struct lttng_syscall_filter
;
413 #define LTTNG_EVENT_HT_BITS 12
414 #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
416 struct lttng_event_ht
{
417 struct hlist_head table
[LTTNG_EVENT_HT_SIZE
];
420 struct lttng_channel
{
422 struct channel
*chan
; /* Channel buffers */
424 struct lttng_ctx
*ctx
;
425 /* Event ID management */
426 struct lttng_session
*session
;
427 struct file
*file
; /* File associated to channel */
428 unsigned int free_event_id
; /* Next event ID to allocate */
429 struct list_head list
; /* Channel list */
430 struct lttng_channel_ops
*ops
;
431 struct lttng_transport
*transport
;
432 struct lttng_event
**sc_table
; /* for syscall tracing */
433 struct lttng_event
**compat_sc_table
;
434 struct lttng_event
**sc_exit_table
; /* for syscall exit tracing */
435 struct lttng_event
**compat_sc_exit_table
;
436 struct lttng_event
*sc_unknown
; /* for unknown syscalls */
437 struct lttng_event
*sc_compat_unknown
;
438 struct lttng_event
*sc_exit_unknown
;
439 struct lttng_event
*compat_sc_exit_unknown
;
440 struct lttng_syscall_filter
*sc_filter
;
441 int header_type
; /* 0: unset, 1: compact, 2: large */
442 enum channel_type channel_type
;
443 unsigned int metadata_dumped
:1,
444 sys_enter_registered
:1,
445 sys_exit_registered
:1,
447 tstate
:1; /* Transient enable state */
450 struct lttng_metadata_stream
{
451 void *priv
; /* Ring buffer private data */
452 struct lttng_metadata_cache
*metadata_cache
;
453 unsigned int metadata_in
; /* Bytes read from the cache */
454 unsigned int metadata_out
; /* Bytes consumed from stream */
455 int finalized
; /* Has channel been finalized */
456 wait_queue_head_t read_wait
; /* Reader buffer-level wait queue */
457 struct list_head list
; /* Stream list */
458 struct lttng_transport
*transport
;
459 uint64_t version
; /* Current version of the metadata cache */
462 #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
464 struct lttng_dynamic_len_stack
{
465 size_t stack
[LTTNG_DYNAMIC_LEN_STACK_SIZE
];
469 DECLARE_PER_CPU(struct lttng_dynamic_len_stack
, lttng_dynamic_len_stack
);
472 * struct lttng_pid_tracker declared in header due to deferencing of *v
473 * in RCU_INITIALIZER(v).
475 #define LTTNG_PID_HASH_BITS 6
476 #define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS)
478 struct lttng_pid_tracker
{
479 struct hlist_head pid_hash
[LTTNG_PID_TABLE_SIZE
];
482 struct lttng_pid_hash_node
{
483 struct hlist_node hlist
;
487 struct lttng_session
{
488 int active
; /* Is trace session active ? */
489 int been_active
; /* Has trace session been active ? */
490 struct file
*file
; /* File associated to session */
491 struct list_head chan
; /* Channel list head */
492 struct list_head events
; /* Event list head */
493 struct list_head list
; /* Session list */
494 unsigned int free_chan_id
; /* Next chan ID to allocate */
495 uuid_le uuid
; /* Trace session unique ID */
496 struct lttng_metadata_cache
*metadata_cache
;
497 struct lttng_pid_tracker
*pid_tracker
;
498 unsigned int metadata_dumped
:1,
499 tstate
:1; /* Transient enable state */
500 /* List of enablers */
501 struct list_head enablers_head
;
502 /* Hash table of events */
503 struct lttng_event_ht events_ht
;
506 struct lttng_metadata_cache
{
507 char *data
; /* Metadata cache */
508 unsigned int cache_alloc
; /* Metadata allocated size (bytes) */
509 unsigned int metadata_written
; /* Number of bytes written in metadata cache */
510 struct kref refcount
; /* Metadata cache usage */
511 struct list_head metadata_stream
; /* Metadata stream list */
512 uuid_le uuid
; /* Trace session unique ID (copy) */
513 struct mutex lock
; /* Produce/consume lock */
514 uint64_t version
; /* Current version of the metadata */
517 void lttng_lock_sessions(void);
518 void lttng_unlock_sessions(void);
520 struct list_head
*lttng_get_probe_list_head(void);
522 struct lttng_enabler
*lttng_enabler_create(enum lttng_enabler_type type
,
523 struct lttng_kernel_event
*event_param
,
524 struct lttng_channel
*chan
);
526 int lttng_enabler_enable(struct lttng_enabler
*enabler
);
527 int lttng_enabler_disable(struct lttng_enabler
*enabler
);
528 int lttng_fix_pending_events(void);
529 int lttng_session_active(void);
531 struct lttng_session
*lttng_session_create(void);
532 int lttng_session_enable(struct lttng_session
*session
);
533 int lttng_session_disable(struct lttng_session
*session
);
534 void lttng_session_destroy(struct lttng_session
*session
);
535 int lttng_session_metadata_regenerate(struct lttng_session
*session
);
536 int lttng_session_statedump(struct lttng_session
*session
);
537 void metadata_cache_destroy(struct kref
*kref
);
539 struct lttng_channel
*lttng_channel_create(struct lttng_session
*session
,
540 const char *transport_name
,
542 size_t subbuf_size
, size_t num_subbuf
,
543 unsigned int switch_timer_interval
,
544 unsigned int read_timer_interval
,
545 enum channel_type channel_type
);
546 struct lttng_channel
*lttng_global_channel_create(struct lttng_session
*session
,
547 int overwrite
, void *buf_addr
,
548 size_t subbuf_size
, size_t num_subbuf
,
549 unsigned int switch_timer_interval
,
550 unsigned int read_timer_interval
);
552 void lttng_metadata_channel_destroy(struct lttng_channel
*chan
);
553 struct lttng_event
*lttng_event_create(struct lttng_channel
*chan
,
554 struct lttng_kernel_event
*event_param
,
556 const struct lttng_event_desc
*event_desc
,
557 enum lttng_kernel_instrumentation itype
);
558 struct lttng_event
*_lttng_event_create(struct lttng_channel
*chan
,
559 struct lttng_kernel_event
*event_param
,
561 const struct lttng_event_desc
*event_desc
,
562 enum lttng_kernel_instrumentation itype
);
563 struct lttng_event
*lttng_event_compat_old_create(struct lttng_channel
*chan
,
564 struct lttng_kernel_old_event
*old_event_param
,
566 const struct lttng_event_desc
*internal_desc
);
568 int lttng_channel_enable(struct lttng_channel
*channel
);
569 int lttng_channel_disable(struct lttng_channel
*channel
);
570 int lttng_event_enable(struct lttng_event
*event
);
571 int lttng_event_disable(struct lttng_event
*event
);
573 void lttng_transport_register(struct lttng_transport
*transport
);
574 void lttng_transport_unregister(struct lttng_transport
*transport
);
576 void synchronize_trace(void);
577 int lttng_abi_init(void);
578 int lttng_abi_compat_old_init(void);
579 void lttng_abi_exit(void);
580 void lttng_abi_compat_old_exit(void);
582 int lttng_probe_register(struct lttng_probe_desc
*desc
);
583 void lttng_probe_unregister(struct lttng_probe_desc
*desc
);
584 const struct lttng_event_desc
*lttng_event_get(const char *name
);
585 void lttng_event_put(const struct lttng_event_desc
*desc
);
586 int lttng_probes_init(void);
587 void lttng_probes_exit(void);
589 int lttng_metadata_output_channel(struct lttng_metadata_stream
*stream
,
590 struct channel
*chan
);
592 int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node
*node
);
593 struct lttng_pid_tracker
*lttng_pid_tracker_create(void);
594 void lttng_pid_tracker_destroy(struct lttng_pid_tracker
*lpf
);
595 bool lttng_pid_tracker_lookup(struct lttng_pid_tracker
*lpf
, int pid
);
596 int lttng_pid_tracker_add(struct lttng_pid_tracker
*lpf
, int pid
);
597 int lttng_pid_tracker_del(struct lttng_pid_tracker
*lpf
, int pid
);
599 int lttng_session_track_pid(struct lttng_session
*session
, int pid
);
600 int lttng_session_untrack_pid(struct lttng_session
*session
, int pid
);
602 int lttng_session_list_tracker_pids(struct lttng_session
*session
);
604 void lttng_clock_ref(void);
605 void lttng_clock_unref(void);
607 #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
608 int lttng_syscalls_register(struct lttng_channel
*chan
, void *filter
);
609 int lttng_syscalls_unregister(struct lttng_channel
*chan
);
610 int lttng_syscall_filter_enable(struct lttng_channel
*chan
,
612 int lttng_syscall_filter_disable(struct lttng_channel
*chan
,
614 long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
615 struct lttng_kernel_syscall_mask __user
*usyscall_mask
);
617 static inline int lttng_syscalls_register(struct lttng_channel
*chan
, void *filter
)
622 static inline int lttng_syscalls_unregister(struct lttng_channel
*chan
)
627 static inline int lttng_syscall_filter_enable(struct lttng_channel
*chan
,
633 static inline int lttng_syscall_filter_disable(struct lttng_channel
*chan
,
639 static inline long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
640 struct lttng_kernel_syscall_mask __user
*usyscall_mask
)
646 void lttng_filter_sync_state(struct lttng_bytecode_runtime
*runtime
);
647 int lttng_enabler_attach_bytecode(struct lttng_enabler
*enabler
,
648 struct lttng_kernel_filter_bytecode __user
*bytecode
);
649 void lttng_enabler_event_link_bytecode(struct lttng_event
*event
,
650 struct lttng_enabler
*enabler
);
652 int lttng_probes_init(void);
654 extern struct lttng_ctx
*lttng_static_ctx
;
656 int lttng_context_init(void);
657 void lttng_context_exit(void);
658 struct lttng_ctx_field
*lttng_append_context(struct lttng_ctx
**ctx
);
659 void lttng_context_update(struct lttng_ctx
*ctx
);
660 int lttng_find_context(struct lttng_ctx
*ctx
, const char *name
);
661 int lttng_get_context_index(struct lttng_ctx
*ctx
, const char *name
);
662 void lttng_remove_context_field(struct lttng_ctx
**ctx
,
663 struct lttng_ctx_field
*field
);
664 void lttng_destroy_context(struct lttng_ctx
*ctx
);
665 int lttng_add_pid_to_ctx(struct lttng_ctx
**ctx
);
666 int lttng_add_cpu_id_to_ctx(struct lttng_ctx
**ctx
);
667 int lttng_add_procname_to_ctx(struct lttng_ctx
**ctx
);
668 int lttng_add_prio_to_ctx(struct lttng_ctx
**ctx
);
669 int lttng_add_nice_to_ctx(struct lttng_ctx
**ctx
);
670 int lttng_add_vpid_to_ctx(struct lttng_ctx
**ctx
);
671 int lttng_add_tid_to_ctx(struct lttng_ctx
**ctx
);
672 int lttng_add_vtid_to_ctx(struct lttng_ctx
**ctx
);
673 int lttng_add_ppid_to_ctx(struct lttng_ctx
**ctx
);
674 int lttng_add_vppid_to_ctx(struct lttng_ctx
**ctx
);
675 int lttng_add_hostname_to_ctx(struct lttng_ctx
**ctx
);
676 int lttng_add_interruptible_to_ctx(struct lttng_ctx
**ctx
);
677 int lttng_add_need_reschedule_to_ctx(struct lttng_ctx
**ctx
);
678 #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
679 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
);
682 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
)
687 #ifdef CONFIG_PREEMPT_RT_FULL
688 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
);
691 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
)
696 #if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
697 int lttng_add_perf_counter_to_ctx(uint32_t type
,
700 struct lttng_ctx
**ctx
);
703 int lttng_add_perf_counter_to_ctx(uint32_t type
,
706 struct lttng_ctx
**ctx
)
712 int lttng_logger_init(void);
713 void lttng_logger_exit(void);
715 extern int lttng_statedump_start(struct lttng_session
*session
);
717 #ifdef CONFIG_KPROBES
718 int lttng_kprobes_register(const char *name
,
719 const char *symbol_name
,
722 struct lttng_event
*event
);
723 void lttng_kprobes_unregister(struct lttng_event
*event
);
724 void lttng_kprobes_destroy_private(struct lttng_event
*event
);
727 int lttng_kprobes_register(const char *name
,
728 const char *symbol_name
,
731 struct lttng_event
*event
)
737 void lttng_kprobes_unregister(struct lttng_event
*event
)
742 void lttng_kprobes_destroy_private(struct lttng_event
*event
)
747 #ifdef CONFIG_KRETPROBES
748 int lttng_kretprobes_register(const char *name
,
749 const char *symbol_name
,
752 struct lttng_event
*event_entry
,
753 struct lttng_event
*event_exit
);
754 void lttng_kretprobes_unregister(struct lttng_event
*event
);
755 void lttng_kretprobes_destroy_private(struct lttng_event
*event
);
756 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
760 int lttng_kretprobes_register(const char *name
,
761 const char *symbol_name
,
764 struct lttng_event
*event_entry
,
765 struct lttng_event
*event_exit
)
771 void lttng_kretprobes_unregister(struct lttng_event
*event
)
776 void lttng_kretprobes_destroy_private(struct lttng_event
*event
)
781 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
788 #ifdef CONFIG_DYNAMIC_FTRACE
789 int lttng_ftrace_register(const char *name
,
790 const char *symbol_name
,
791 struct lttng_event
*event
);
792 void lttng_ftrace_unregister(struct lttng_event
*event
);
793 void lttng_ftrace_destroy_private(struct lttng_event
*event
);
796 int lttng_ftrace_register(const char *name
,
797 const char *symbol_name
,
798 struct lttng_event
*event
)
804 void lttng_ftrace_unregister(struct lttng_event
*event
)
809 void lttng_ftrace_destroy_private(struct lttng_event
*event
)
814 int lttng_calibrate(struct lttng_kernel_calibrate
*calibrate
);
816 extern const struct file_operations lttng_tracepoint_list_fops
;
817 extern const struct file_operations lttng_syscall_list_fops
;
819 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
820 #define TRACEPOINT_HAS_DATA_ARG
823 #endif /* _LTTNG_EVENTS_H */