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-abi.h>
32 #include <lttng-abi-old.h>
34 #define lttng_is_signed_type(type) (((type)(-1)) < 0)
38 struct lttng_metadata_cache
;
39 struct lib_ring_buffer_ctx
;
41 struct perf_event_attr
;
42 struct lib_ring_buffer_config
;
44 /* Type description */
53 atype_array_compound
, /* Array of compound types. */
54 atype_sequence_compound
, /* Sequence of compound types. */
59 enum lttng_string_encodings
{
60 lttng_encode_none
= 0,
61 lttng_encode_UTF8
= 1,
62 lttng_encode_ASCII
= 2,
71 struct lttng_enum_entry
{
72 unsigned long long start
, end
; /* start and end are inclusive */
76 #define __type_integer(_type, _size, _alignment, _signedness, \
77 _byte_order, _base, _encoding) \
79 .atype = atype_integer, \
82 .size = (_size) ? : sizeof(_type) * CHAR_BIT, \
83 .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \
84 .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \
85 .reverse_byte_order = _byte_order != __BYTE_ORDER, \
87 .encoding = lttng_encode_##_encoding, \
91 struct lttng_integer_type {
92 unsigned int size
; /* in bits */
93 unsigned short alignment
; /* in bits */
94 unsigned int signedness
:1,
96 unsigned int base
; /* 2, 8, 10, 16, for pretty print */
97 enum lttng_string_encodings encoding
;
100 union _lttng_basic_type
{
101 struct lttng_integer_type integer
;
106 enum lttng_string_encodings encoding
;
110 struct lttng_basic_type
{
111 enum abstract_types atype
;
113 union _lttng_basic_type basic
;
118 enum abstract_types atype
;
120 union _lttng_basic_type basic
;
122 struct lttng_basic_type elem_type
;
123 unsigned int length
; /* num. elems. */
124 unsigned int elem_alignment
; /* alignment override */
127 struct lttng_basic_type length_type
;
128 struct lttng_basic_type elem_type
;
129 unsigned int elem_alignment
; /* alignment override */
133 struct lttng_event_field
*fields
; /* Array of fields. */
136 struct lttng_type
*elem_type
;
137 unsigned int length
; /* num. elems. */
140 struct lttng_type
*elem_type
;
141 const char *length_name
;
144 const char *tag_name
;
145 struct lttng_event_field
*choices
; /* Array of fields. */
153 struct lttng_type container_type
;
154 const struct lttng_enum_entry
*entries
;
158 /* Event field description */
160 struct lttng_event_field
{
162 struct lttng_type type
;
163 unsigned int nowrite
:1, /* do not write into trace */
164 user
:1; /* fetch from user-space */
167 union lttng_ctx_value
{
174 * We need to keep this perf counter field separately from struct
175 * lttng_ctx_field because cpu hotplug needs fixed-location addresses.
177 struct lttng_perf_counter_field
{
178 struct notifier_block nb
;
180 struct perf_event_attr
*attr
;
181 struct perf_event
**e
; /* per-cpu array */
184 struct lttng_probe_ctx
{
185 struct lttng_event
*event
;
186 uint8_t interruptible
;
189 struct lttng_ctx_field
{
190 struct lttng_event_field event_field
;
191 size_t (*get_size
)(size_t offset
);
192 void (*record
)(struct lttng_ctx_field
*field
,
193 struct lib_ring_buffer_ctx
*ctx
,
194 struct lttng_channel
*chan
);
195 void (*get_value
)(struct lttng_ctx_field
*field
,
196 struct lttng_probe_ctx
*lttng_probe_ctx
,
197 union lttng_ctx_value
*value
);
199 struct lttng_perf_counter_field
*perf_counter
;
201 void (*destroy
)(struct lttng_ctx_field
*field
);
205 struct lttng_ctx_field
*fields
;
206 unsigned int nr_fields
;
207 unsigned int allocated_fields
;
208 size_t largest_align
; /* in bytes */
211 struct lttng_event_desc
{
212 const char *name
; /* lttng-modules name */
213 const char *kname
; /* Linux kernel name (tracepoints) */
214 void *probe_callback
;
215 const struct lttng_event_ctx
*ctx
; /* context */
216 const struct lttng_event_field
*fields
; /* event payload */
217 unsigned int nr_fields
;
218 struct module
*owner
;
221 struct lttng_probe_desc
{
222 const char *provider
;
223 const struct lttng_event_desc
**event_desc
;
224 unsigned int nr_events
;
225 struct list_head head
; /* chain registered probes */
226 struct list_head lazy_init_head
;
227 int lazy
; /* lazy registration */
230 struct lttng_krp
; /* Kretprobe handling */
232 enum lttng_event_type
{
233 LTTNG_TYPE_EVENT
= 0,
234 LTTNG_TYPE_ENABLER
= 1,
237 struct lttng_filter_bytecode_node
{
238 struct list_head node
;
239 struct lttng_enabler
*enabler
;
241 * struct lttng_kernel_filter_bytecode has var. sized array, must be
244 struct lttng_kernel_filter_bytecode bc
;
248 * Filter return value masks.
250 enum lttng_filter_ret
{
251 LTTNG_FILTER_DISCARD
= 0,
252 LTTNG_FILTER_RECORD_FLAG
= (1ULL << 0),
253 /* Other bits are kept for future use. */
256 struct lttng_bytecode_runtime
{
257 /* Associated bytecode */
258 struct lttng_filter_bytecode_node
*bc
;
259 uint64_t (*filter
)(void *filter_data
, struct lttng_probe_ctx
*lttng_probe_ctx
,
260 const char *filter_stack_data
);
262 struct list_head node
; /* list of bytecode runtime in event */
266 * Objects in a linked-list of enablers, owned by an event.
268 struct lttng_enabler_ref
{
269 struct list_head node
; /* enabler ref list */
270 struct lttng_enabler
*ref
; /* backward ref */
274 * lttng_event structure is referred to by the tracing fast path. It must be
278 enum lttng_event_type evtype
; /* First field. */
280 struct lttng_channel
*chan
;
282 const struct lttng_event_desc
*desc
;
284 struct lttng_ctx
*ctx
;
285 enum lttng_kernel_instrumentation instrumentation
;
292 struct lttng_krp
*lttng_krp
;
299 struct list_head list
; /* Event list in session */
300 unsigned int metadata_dumped
:1;
302 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
303 struct list_head enablers_ref_head
;
304 struct hlist_node hlist
; /* session ht of events */
305 int registered
; /* has reg'd tracepoint probe */
306 /* list of struct lttng_bytecode_runtime, sorted by seqnum */
307 struct list_head bytecode_runtime_head
;
308 int has_enablers_without_bytecode
;
311 enum lttng_enabler_type
{
312 LTTNG_ENABLER_WILDCARD
,
317 * Enabler field, within whatever object is enabling an event. Target of
318 * backward reference.
320 struct lttng_enabler
{
321 enum lttng_event_type evtype
; /* First field. */
323 enum lttng_enabler_type type
;
325 struct list_head node
; /* per-session list of enablers */
326 /* head list of struct lttng_ust_filter_bytecode_node */
327 struct list_head filter_bytecode_head
;
329 struct lttng_kernel_event event_param
;
330 struct lttng_channel
*chan
;
331 struct lttng_ctx
*ctx
;
332 unsigned int enabled
:1;
335 struct lttng_channel_ops
{
336 struct channel
*(*channel_create
)(const char *name
,
337 struct lttng_channel
*lttng_chan
,
339 size_t subbuf_size
, size_t num_subbuf
,
340 unsigned int switch_timer_interval
,
341 unsigned int read_timer_interval
);
342 void (*channel_destroy
)(struct channel
*chan
);
343 struct lib_ring_buffer
*(*buffer_read_open
)(struct channel
*chan
);
344 int (*buffer_has_read_closed_stream
)(struct channel
*chan
);
345 void (*buffer_read_close
)(struct lib_ring_buffer
*buf
);
346 int (*event_reserve
)(struct lib_ring_buffer_ctx
*ctx
,
348 void (*event_commit
)(struct lib_ring_buffer_ctx
*ctx
);
349 void (*event_write
)(struct lib_ring_buffer_ctx
*ctx
, const void *src
,
351 void (*event_write_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
352 const void *src
, size_t len
);
353 void (*event_memset
)(struct lib_ring_buffer_ctx
*ctx
,
355 void (*event_strcpy
)(struct lib_ring_buffer_ctx
*ctx
, const char *src
,
357 void (*event_strcpy_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
358 const char __user
*src
, size_t len
);
360 * packet_avail_size returns the available size in the current
361 * packet. Note that the size returned is only a hint, since it
362 * may change due to concurrent writes.
364 size_t (*packet_avail_size
)(struct channel
*chan
);
365 wait_queue_head_t
*(*get_writer_buf_wait_queue
)(struct channel
*chan
, int cpu
);
366 wait_queue_head_t
*(*get_hp_wait_queue
)(struct channel
*chan
);
367 int (*is_finalized
)(struct channel
*chan
);
368 int (*is_disabled
)(struct channel
*chan
);
369 int (*timestamp_begin
) (const struct lib_ring_buffer_config
*config
,
370 struct lib_ring_buffer
*bufb
,
371 uint64_t *timestamp_begin
);
372 int (*timestamp_end
) (const struct lib_ring_buffer_config
*config
,
373 struct lib_ring_buffer
*bufb
,
374 uint64_t *timestamp_end
);
375 int (*events_discarded
) (const struct lib_ring_buffer_config
*config
,
376 struct lib_ring_buffer
*bufb
,
377 uint64_t *events_discarded
);
378 int (*content_size
) (const struct lib_ring_buffer_config
*config
,
379 struct lib_ring_buffer
*bufb
,
380 uint64_t *content_size
);
381 int (*packet_size
) (const struct lib_ring_buffer_config
*config
,
382 struct lib_ring_buffer
*bufb
,
383 uint64_t *packet_size
);
384 int (*stream_id
) (const struct lib_ring_buffer_config
*config
,
385 struct lib_ring_buffer
*bufb
,
386 uint64_t *stream_id
);
387 int (*current_timestamp
) (const struct lib_ring_buffer_config
*config
,
388 struct lib_ring_buffer
*bufb
,
390 int (*sequence_number
) (const struct lib_ring_buffer_config
*config
,
391 struct lib_ring_buffer
*bufb
,
393 int (*instance_id
) (const struct lib_ring_buffer_config
*config
,
394 struct lib_ring_buffer
*bufb
,
398 struct lttng_transport
{
400 struct module
*owner
;
401 struct list_head node
;
402 struct lttng_channel_ops ops
;
405 struct lttng_syscall_filter
;
407 #define LTTNG_EVENT_HT_BITS 12
408 #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
410 struct lttng_event_ht
{
411 struct hlist_head table
[LTTNG_EVENT_HT_SIZE
];
414 struct lttng_channel
{
416 struct channel
*chan
; /* Channel buffers */
418 struct lttng_ctx
*ctx
;
419 /* Event ID management */
420 struct lttng_session
*session
;
421 struct file
*file
; /* File associated to channel */
422 unsigned int free_event_id
; /* Next event ID to allocate */
423 struct list_head list
; /* Channel list */
424 struct lttng_channel_ops
*ops
;
425 struct lttng_transport
*transport
;
426 struct lttng_event
**sc_table
; /* for syscall tracing */
427 struct lttng_event
**compat_sc_table
;
428 struct lttng_event
**sc_exit_table
; /* for syscall exit tracing */
429 struct lttng_event
**compat_sc_exit_table
;
430 struct lttng_event
*sc_unknown
; /* for unknown syscalls */
431 struct lttng_event
*sc_compat_unknown
;
432 struct lttng_event
*sc_exit_unknown
;
433 struct lttng_event
*compat_sc_exit_unknown
;
434 struct lttng_syscall_filter
*sc_filter
;
435 int header_type
; /* 0: unset, 1: compact, 2: large */
436 enum channel_type channel_type
;
437 unsigned int metadata_dumped
:1,
438 sys_enter_registered
:1,
439 sys_exit_registered
:1,
441 tstate
:1; /* Transient enable state */
444 struct lttng_metadata_stream
{
445 void *priv
; /* Ring buffer private data */
446 struct lttng_metadata_cache
*metadata_cache
;
447 unsigned int metadata_in
; /* Bytes read from the cache */
448 unsigned int metadata_out
; /* Bytes consumed from stream */
449 int finalized
; /* Has channel been finalized */
450 wait_queue_head_t read_wait
; /* Reader buffer-level wait queue */
451 struct list_head list
; /* Stream list */
452 struct lttng_transport
*transport
;
453 uint64_t version
; /* Current version of the metadata cache */
456 #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
458 struct lttng_dynamic_len_stack
{
459 size_t stack
[LTTNG_DYNAMIC_LEN_STACK_SIZE
];
463 DECLARE_PER_CPU(struct lttng_dynamic_len_stack
, lttng_dynamic_len_stack
);
466 * struct lttng_pid_tracker declared in header due to deferencing of *v
467 * in RCU_INITIALIZER(v).
469 #define LTTNG_PID_HASH_BITS 6
470 #define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS)
472 struct lttng_pid_tracker
{
473 struct hlist_head pid_hash
[LTTNG_PID_TABLE_SIZE
];
476 struct lttng_pid_hash_node
{
477 struct hlist_node hlist
;
481 struct lttng_session
{
482 int active
; /* Is trace session active ? */
483 int been_active
; /* Has trace session been active ? */
484 struct file
*file
; /* File associated to session */
485 struct list_head chan
; /* Channel list head */
486 struct list_head events
; /* Event list head */
487 struct list_head list
; /* Session list */
488 unsigned int free_chan_id
; /* Next chan ID to allocate */
489 uuid_le uuid
; /* Trace session unique ID */
490 struct lttng_metadata_cache
*metadata_cache
;
491 struct lttng_pid_tracker
*pid_tracker
;
492 unsigned int metadata_dumped
:1,
493 tstate
:1; /* Transient enable state */
494 /* List of enablers */
495 struct list_head enablers_head
;
496 /* Hash table of events */
497 struct lttng_event_ht events_ht
;
500 struct lttng_metadata_cache
{
501 char *data
; /* Metadata cache */
502 unsigned int cache_alloc
; /* Metadata allocated size (bytes) */
503 unsigned int metadata_written
; /* Number of bytes written in metadata cache */
504 struct kref refcount
; /* Metadata cache usage */
505 struct list_head metadata_stream
; /* Metadata stream list */
506 uuid_le uuid
; /* Trace session unique ID (copy) */
507 struct mutex lock
; /* Produce/consume lock */
508 uint64_t version
; /* Current version of the metadata */
511 void lttng_lock_sessions(void);
512 void lttng_unlock_sessions(void);
514 struct list_head
*lttng_get_probe_list_head(void);
516 struct lttng_enabler
*lttng_enabler_create(enum lttng_enabler_type type
,
517 struct lttng_kernel_event
*event_param
,
518 struct lttng_channel
*chan
);
520 int lttng_enabler_enable(struct lttng_enabler
*enabler
);
521 int lttng_enabler_disable(struct lttng_enabler
*enabler
);
522 int lttng_fix_pending_events(void);
523 int lttng_session_active(void);
525 struct lttng_session
*lttng_session_create(void);
526 int lttng_session_enable(struct lttng_session
*session
);
527 int lttng_session_disable(struct lttng_session
*session
);
528 void lttng_session_destroy(struct lttng_session
*session
);
529 int lttng_session_metadata_regenerate(struct lttng_session
*session
);
530 void metadata_cache_destroy(struct kref
*kref
);
532 struct lttng_channel
*lttng_channel_create(struct lttng_session
*session
,
533 const char *transport_name
,
535 size_t subbuf_size
, size_t num_subbuf
,
536 unsigned int switch_timer_interval
,
537 unsigned int read_timer_interval
,
538 enum channel_type channel_type
);
539 struct lttng_channel
*lttng_global_channel_create(struct lttng_session
*session
,
540 int overwrite
, void *buf_addr
,
541 size_t subbuf_size
, size_t num_subbuf
,
542 unsigned int switch_timer_interval
,
543 unsigned int read_timer_interval
);
545 void lttng_metadata_channel_destroy(struct lttng_channel
*chan
);
546 struct lttng_event
*lttng_event_create(struct lttng_channel
*chan
,
547 struct lttng_kernel_event
*event_param
,
549 const struct lttng_event_desc
*event_desc
,
550 enum lttng_kernel_instrumentation itype
);
551 struct lttng_event
*_lttng_event_create(struct lttng_channel
*chan
,
552 struct lttng_kernel_event
*event_param
,
554 const struct lttng_event_desc
*event_desc
,
555 enum lttng_kernel_instrumentation itype
);
556 struct lttng_event
*lttng_event_compat_old_create(struct lttng_channel
*chan
,
557 struct lttng_kernel_old_event
*old_event_param
,
559 const struct lttng_event_desc
*internal_desc
);
561 int lttng_channel_enable(struct lttng_channel
*channel
);
562 int lttng_channel_disable(struct lttng_channel
*channel
);
563 int lttng_event_enable(struct lttng_event
*event
);
564 int lttng_event_disable(struct lttng_event
*event
);
566 void lttng_transport_register(struct lttng_transport
*transport
);
567 void lttng_transport_unregister(struct lttng_transport
*transport
);
569 void synchronize_trace(void);
570 int lttng_abi_init(void);
571 int lttng_abi_compat_old_init(void);
572 void lttng_abi_exit(void);
573 void lttng_abi_compat_old_exit(void);
575 int lttng_probe_register(struct lttng_probe_desc
*desc
);
576 void lttng_probe_unregister(struct lttng_probe_desc
*desc
);
577 const struct lttng_event_desc
*lttng_event_get(const char *name
);
578 void lttng_event_put(const struct lttng_event_desc
*desc
);
579 int lttng_probes_init(void);
580 void lttng_probes_exit(void);
582 int lttng_metadata_output_channel(struct lttng_metadata_stream
*stream
,
583 struct channel
*chan
);
585 int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node
*node
);
586 struct lttng_pid_tracker
*lttng_pid_tracker_create(void);
587 void lttng_pid_tracker_destroy(struct lttng_pid_tracker
*lpf
);
588 bool lttng_pid_tracker_lookup(struct lttng_pid_tracker
*lpf
, int pid
);
589 int lttng_pid_tracker_add(struct lttng_pid_tracker
*lpf
, int pid
);
590 int lttng_pid_tracker_del(struct lttng_pid_tracker
*lpf
, int pid
);
592 int lttng_session_track_pid(struct lttng_session
*session
, int pid
);
593 int lttng_session_untrack_pid(struct lttng_session
*session
, int pid
);
595 int lttng_session_list_tracker_pids(struct lttng_session
*session
);
597 void lttng_clock_ref(void);
598 void lttng_clock_unref(void);
600 #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
601 int lttng_syscalls_register(struct lttng_channel
*chan
, void *filter
);
602 int lttng_syscalls_unregister(struct lttng_channel
*chan
);
603 int lttng_syscall_filter_enable(struct lttng_channel
*chan
,
605 int lttng_syscall_filter_disable(struct lttng_channel
*chan
,
607 long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
608 struct lttng_kernel_syscall_mask __user
*usyscall_mask
);
610 static inline int lttng_syscalls_register(struct lttng_channel
*chan
, void *filter
)
615 static inline int lttng_syscalls_unregister(struct lttng_channel
*chan
)
620 static inline int lttng_syscall_filter_enable(struct lttng_channel
*chan
,
626 static inline int lttng_syscall_filter_disable(struct lttng_channel
*chan
,
632 static inline long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
633 struct lttng_kernel_syscall_mask __user
*usyscall_mask
)
639 void lttng_filter_sync_state(struct lttng_bytecode_runtime
*runtime
);
640 int lttng_enabler_attach_bytecode(struct lttng_enabler
*enabler
,
641 struct lttng_kernel_filter_bytecode __user
*bytecode
);
642 void lttng_enabler_event_link_bytecode(struct lttng_event
*event
,
643 struct lttng_enabler
*enabler
);
645 int lttng_probes_init(void);
647 extern struct lttng_ctx
*lttng_static_ctx
;
649 int lttng_context_init(void);
650 void lttng_context_exit(void);
651 struct lttng_ctx_field
*lttng_append_context(struct lttng_ctx
**ctx
);
652 void lttng_context_update(struct lttng_ctx
*ctx
);
653 int lttng_find_context(struct lttng_ctx
*ctx
, const char *name
);
654 int lttng_get_context_index(struct lttng_ctx
*ctx
, const char *name
);
655 void lttng_remove_context_field(struct lttng_ctx
**ctx
,
656 struct lttng_ctx_field
*field
);
657 void lttng_destroy_context(struct lttng_ctx
*ctx
);
658 int lttng_add_pid_to_ctx(struct lttng_ctx
**ctx
);
659 int lttng_add_cpu_id_to_ctx(struct lttng_ctx
**ctx
);
660 int lttng_add_procname_to_ctx(struct lttng_ctx
**ctx
);
661 int lttng_add_prio_to_ctx(struct lttng_ctx
**ctx
);
662 int lttng_add_nice_to_ctx(struct lttng_ctx
**ctx
);
663 int lttng_add_vpid_to_ctx(struct lttng_ctx
**ctx
);
664 int lttng_add_tid_to_ctx(struct lttng_ctx
**ctx
);
665 int lttng_add_vtid_to_ctx(struct lttng_ctx
**ctx
);
666 int lttng_add_ppid_to_ctx(struct lttng_ctx
**ctx
);
667 int lttng_add_vppid_to_ctx(struct lttng_ctx
**ctx
);
668 int lttng_add_hostname_to_ctx(struct lttng_ctx
**ctx
);
669 int lttng_add_interruptible_to_ctx(struct lttng_ctx
**ctx
);
670 int lttng_add_need_reschedule_to_ctx(struct lttng_ctx
**ctx
);
671 #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
672 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
);
675 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
)
680 #ifdef CONFIG_PREEMPT_RT_FULL
681 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
);
684 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
)
689 #if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
690 int lttng_add_perf_counter_to_ctx(uint32_t type
,
693 struct lttng_ctx
**ctx
);
696 int lttng_add_perf_counter_to_ctx(uint32_t type
,
699 struct lttng_ctx
**ctx
)
705 int lttng_logger_init(void);
706 void lttng_logger_exit(void);
708 extern int lttng_statedump_start(struct lttng_session
*session
);
710 #ifdef CONFIG_KPROBES
711 int lttng_kprobes_register(const char *name
,
712 const char *symbol_name
,
715 struct lttng_event
*event
);
716 void lttng_kprobes_unregister(struct lttng_event
*event
);
717 void lttng_kprobes_destroy_private(struct lttng_event
*event
);
720 int lttng_kprobes_register(const char *name
,
721 const char *symbol_name
,
724 struct lttng_event
*event
)
730 void lttng_kprobes_unregister(struct lttng_event
*event
)
735 void lttng_kprobes_destroy_private(struct lttng_event
*event
)
740 #ifdef CONFIG_KRETPROBES
741 int lttng_kretprobes_register(const char *name
,
742 const char *symbol_name
,
745 struct lttng_event
*event_entry
,
746 struct lttng_event
*event_exit
);
747 void lttng_kretprobes_unregister(struct lttng_event
*event
);
748 void lttng_kretprobes_destroy_private(struct lttng_event
*event
);
749 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
753 int lttng_kretprobes_register(const char *name
,
754 const char *symbol_name
,
757 struct lttng_event
*event_entry
,
758 struct lttng_event
*event_exit
)
764 void lttng_kretprobes_unregister(struct lttng_event
*event
)
769 void lttng_kretprobes_destroy_private(struct lttng_event
*event
)
774 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
781 #ifdef CONFIG_DYNAMIC_FTRACE
782 int lttng_ftrace_register(const char *name
,
783 const char *symbol_name
,
784 struct lttng_event
*event
);
785 void lttng_ftrace_unregister(struct lttng_event
*event
);
786 void lttng_ftrace_destroy_private(struct lttng_event
*event
);
789 int lttng_ftrace_register(const char *name
,
790 const char *symbol_name
,
791 struct lttng_event
*event
)
797 void lttng_ftrace_unregister(struct lttng_event
*event
)
802 void lttng_ftrace_destroy_private(struct lttng_event
*event
)
807 int lttng_calibrate(struct lttng_kernel_calibrate
*calibrate
);
809 extern const struct file_operations lttng_tracepoint_list_fops
;
810 extern const struct file_operations lttng_syscall_list_fops
;
812 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
813 #define TRACEPOINT_HAS_DATA_ARG
816 #endif /* _LTTNG_EVENTS_H */