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 <lttng-kernel-version.h>
27 #include <linux/list.h>
28 #include <linux/kprobes.h>
29 #include <linux/kref.h>
30 #include <lttng-cpuhotplug.h>
31 #include <wrapper/uuid.h>
32 #include <lttng-tracer.h>
33 #include <lttng-abi.h>
34 #include <lttng-abi-old.h>
36 #define lttng_is_signed_type(type) (((type)(-1)) < 0)
40 struct lttng_metadata_cache
;
41 struct lib_ring_buffer_ctx
;
43 struct perf_event_attr
;
44 struct lib_ring_buffer_config
;
46 /* Type description */
55 atype_array_compound
, /* Array of compound types. */
56 atype_sequence_compound
, /* Sequence of compound types. */
61 enum lttng_string_encodings
{
62 lttng_encode_none
= 0,
63 lttng_encode_UTF8
= 1,
64 lttng_encode_ASCII
= 2,
73 struct lttng_enum_value
{
74 unsigned long long value
;
75 unsigned int signedness
:1;
78 struct lttng_enum_entry
{
79 struct lttng_enum_value start
, end
; /* start and end are inclusive */
82 unsigned int is_auto
:1;
86 #define __type_integer(_type, _size, _alignment, _signedness, \
87 _byte_order, _base, _encoding) \
89 .atype = atype_integer, \
92 .size = (_size) ? : sizeof(_type) * CHAR_BIT, \
93 .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \
94 .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \
95 .reverse_byte_order = _byte_order != __BYTE_ORDER, \
97 .encoding = lttng_encode_##_encoding, \
101 struct lttng_integer_type {
102 unsigned int size
; /* in bits */
103 unsigned short alignment
; /* in bits */
104 unsigned int signedness
:1,
105 reverse_byte_order
:1;
106 unsigned int base
; /* 2, 8, 10, 16, for pretty print */
107 enum lttng_string_encodings encoding
;
110 union _lttng_basic_type
{
111 struct lttng_integer_type integer
;
113 const struct lttng_enum_desc
*desc
; /* Enumeration mapping */
114 struct lttng_integer_type container_type
;
117 enum lttng_string_encodings encoding
;
121 struct lttng_basic_type
{
122 enum abstract_types atype
;
124 union _lttng_basic_type basic
;
129 enum abstract_types atype
;
131 union _lttng_basic_type basic
;
133 struct lttng_basic_type elem_type
;
134 unsigned int length
; /* num. elems. */
135 unsigned int elem_alignment
; /* alignment override */
138 struct lttng_basic_type length_type
;
139 struct lttng_basic_type elem_type
;
140 unsigned int elem_alignment
; /* alignment override */
144 struct lttng_event_field
*fields
; /* Array of fields. */
147 struct lttng_type
*elem_type
;
148 unsigned int length
; /* num. elems. */
151 struct lttng_type
*elem_type
;
152 const char *length_name
;
155 const char *tag_name
;
156 struct lttng_event_field
*choices
; /* Array of fields. */
162 struct lttng_enum_desc
{
164 const struct lttng_enum_entry
*entries
;
165 unsigned int nr_entries
;
168 /* Event field description */
170 struct lttng_event_field
{
172 struct lttng_type type
;
173 unsigned int nowrite
:1, /* do not write into trace */
174 user
:1; /* fetch from user-space */
177 union lttng_ctx_value
{
184 * We need to keep this perf counter field separately from struct
185 * lttng_ctx_field because cpu hotplug needs fixed-location addresses.
187 struct lttng_perf_counter_field
{
188 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
189 struct lttng_cpuhp_node cpuhp_prepare
;
190 struct lttng_cpuhp_node cpuhp_online
;
192 struct notifier_block nb
;
195 struct perf_event_attr
*attr
;
196 struct perf_event
**e
; /* per-cpu array */
199 struct lttng_probe_ctx
{
200 struct lttng_event
*event
;
201 uint8_t interruptible
;
204 struct lttng_ctx_field
{
205 struct lttng_event_field event_field
;
206 size_t (*get_size
)(size_t offset
);
207 void (*record
)(struct lttng_ctx_field
*field
,
208 struct lib_ring_buffer_ctx
*ctx
,
209 struct lttng_channel
*chan
);
210 void (*get_value
)(struct lttng_ctx_field
*field
,
211 struct lttng_probe_ctx
*lttng_probe_ctx
,
212 union lttng_ctx_value
*value
);
214 struct lttng_perf_counter_field
*perf_counter
;
216 void (*destroy
)(struct lttng_ctx_field
*field
);
220 struct lttng_ctx_field
*fields
;
221 unsigned int nr_fields
;
222 unsigned int allocated_fields
;
223 size_t largest_align
; /* in bytes */
226 struct lttng_event_desc
{
227 const char *name
; /* lttng-modules name */
228 const char *kname
; /* Linux kernel name (tracepoints) */
229 void *probe_callback
;
230 const struct lttng_event_ctx
*ctx
; /* context */
231 const struct lttng_event_field
*fields
; /* event payload */
232 unsigned int nr_fields
;
233 struct module
*owner
;
236 struct lttng_probe_desc
{
237 const char *provider
;
238 const struct lttng_event_desc
**event_desc
;
239 unsigned int nr_events
;
240 struct list_head head
; /* chain registered probes */
241 struct list_head lazy_init_head
;
242 int lazy
; /* lazy registration */
245 struct lttng_krp
; /* Kretprobe handling */
247 enum lttng_event_type
{
248 LTTNG_TYPE_EVENT
= 0,
249 LTTNG_TYPE_ENABLER
= 1,
252 struct lttng_filter_bytecode_node
{
253 struct list_head node
;
254 struct lttng_enabler
*enabler
;
256 * struct lttng_kernel_filter_bytecode has var. sized array, must be
259 struct lttng_kernel_filter_bytecode bc
;
263 * Filter return value masks.
265 enum lttng_filter_ret
{
266 LTTNG_FILTER_DISCARD
= 0,
267 LTTNG_FILTER_RECORD_FLAG
= (1ULL << 0),
268 /* Other bits are kept for future use. */
271 struct lttng_bytecode_runtime
{
272 /* Associated bytecode */
273 struct lttng_filter_bytecode_node
*bc
;
274 uint64_t (*filter
)(void *filter_data
, struct lttng_probe_ctx
*lttng_probe_ctx
,
275 const char *filter_stack_data
);
277 struct list_head node
; /* list of bytecode runtime in event */
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 */
289 * lttng_event structure is referred to by the tracing fast path. It must be
293 enum lttng_event_type evtype
; /* First field. */
295 struct lttng_channel
*chan
;
297 const struct lttng_event_desc
*desc
;
299 struct lttng_ctx
*ctx
;
300 enum lttng_kernel_instrumentation instrumentation
;
307 struct lttng_krp
*lttng_krp
;
311 struct list_head list
; /* Event list in session */
312 unsigned int metadata_dumped
:1;
314 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
315 struct list_head enablers_ref_head
;
316 struct hlist_node hlist
; /* session ht of events */
317 int registered
; /* has reg'd tracepoint probe */
318 /* list of struct lttng_bytecode_runtime, sorted by seqnum */
319 struct list_head bytecode_runtime_head
;
320 int has_enablers_without_bytecode
;
323 enum lttng_enabler_type
{
324 LTTNG_ENABLER_STAR_GLOB
,
329 * Enabler field, within whatever object is enabling an event. Target of
330 * backward reference.
332 struct lttng_enabler
{
333 enum lttng_event_type evtype
; /* First field. */
335 enum lttng_enabler_type type
;
337 struct list_head node
; /* per-session list of enablers */
338 /* head list of struct lttng_ust_filter_bytecode_node */
339 struct list_head filter_bytecode_head
;
341 struct lttng_kernel_event event_param
;
342 struct lttng_channel
*chan
;
343 struct lttng_ctx
*ctx
;
344 unsigned int enabled
:1;
347 struct lttng_channel_ops
{
348 struct channel
*(*channel_create
)(const char *name
,
349 struct lttng_channel
*lttng_chan
,
351 size_t subbuf_size
, size_t num_subbuf
,
352 unsigned int switch_timer_interval
,
353 unsigned int read_timer_interval
);
354 void (*channel_destroy
)(struct channel
*chan
);
355 struct lib_ring_buffer
*(*buffer_read_open
)(struct channel
*chan
);
356 int (*buffer_has_read_closed_stream
)(struct channel
*chan
);
357 void (*buffer_read_close
)(struct lib_ring_buffer
*buf
);
358 int (*event_reserve
)(struct lib_ring_buffer_ctx
*ctx
,
360 void (*event_commit
)(struct lib_ring_buffer_ctx
*ctx
);
361 void (*event_write
)(struct lib_ring_buffer_ctx
*ctx
, const void *src
,
363 void (*event_write_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
364 const void *src
, size_t len
);
365 void (*event_memset
)(struct lib_ring_buffer_ctx
*ctx
,
367 void (*event_strcpy
)(struct lib_ring_buffer_ctx
*ctx
, const char *src
,
369 void (*event_strcpy_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
370 const char __user
*src
, size_t len
);
372 * packet_avail_size returns the available size in the current
373 * packet. Note that the size returned is only a hint, since it
374 * may change due to concurrent writes.
376 size_t (*packet_avail_size
)(struct channel
*chan
);
377 wait_queue_head_t
*(*get_writer_buf_wait_queue
)(struct channel
*chan
, int cpu
);
378 wait_queue_head_t
*(*get_hp_wait_queue
)(struct channel
*chan
);
379 int (*is_finalized
)(struct channel
*chan
);
380 int (*is_disabled
)(struct channel
*chan
);
381 int (*timestamp_begin
) (const struct lib_ring_buffer_config
*config
,
382 struct lib_ring_buffer
*bufb
,
383 uint64_t *timestamp_begin
);
384 int (*timestamp_end
) (const struct lib_ring_buffer_config
*config
,
385 struct lib_ring_buffer
*bufb
,
386 uint64_t *timestamp_end
);
387 int (*events_discarded
) (const struct lib_ring_buffer_config
*config
,
388 struct lib_ring_buffer
*bufb
,
389 uint64_t *events_discarded
);
390 int (*content_size
) (const struct lib_ring_buffer_config
*config
,
391 struct lib_ring_buffer
*bufb
,
392 uint64_t *content_size
);
393 int (*packet_size
) (const struct lib_ring_buffer_config
*config
,
394 struct lib_ring_buffer
*bufb
,
395 uint64_t *packet_size
);
396 int (*stream_id
) (const struct lib_ring_buffer_config
*config
,
397 struct lib_ring_buffer
*bufb
,
398 uint64_t *stream_id
);
399 int (*current_timestamp
) (const struct lib_ring_buffer_config
*config
,
400 struct lib_ring_buffer
*bufb
,
402 int (*sequence_number
) (const struct lib_ring_buffer_config
*config
,
403 struct lib_ring_buffer
*bufb
,
405 int (*instance_id
) (const struct lib_ring_buffer_config
*config
,
406 struct lib_ring_buffer
*bufb
,
410 struct lttng_transport
{
412 struct module
*owner
;
413 struct list_head node
;
414 struct lttng_channel_ops ops
;
417 struct lttng_syscall_filter
;
419 #define LTTNG_EVENT_HT_BITS 12
420 #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
422 struct lttng_event_ht
{
423 struct hlist_head table
[LTTNG_EVENT_HT_SIZE
];
426 struct lttng_channel
{
428 struct channel
*chan
; /* Channel buffers */
430 struct lttng_ctx
*ctx
;
431 /* Event ID management */
432 struct lttng_session
*session
;
433 struct file
*file
; /* File associated to channel */
434 unsigned int free_event_id
; /* Next event ID to allocate */
435 struct list_head list
; /* Channel list */
436 struct lttng_channel_ops
*ops
;
437 struct lttng_transport
*transport
;
438 struct lttng_event
**sc_table
; /* for syscall tracing */
439 struct lttng_event
**compat_sc_table
;
440 struct lttng_event
**sc_exit_table
; /* for syscall exit tracing */
441 struct lttng_event
**compat_sc_exit_table
;
442 struct lttng_event
*sc_unknown
; /* for unknown syscalls */
443 struct lttng_event
*sc_compat_unknown
;
444 struct lttng_event
*sc_exit_unknown
;
445 struct lttng_event
*compat_sc_exit_unknown
;
446 struct lttng_syscall_filter
*sc_filter
;
447 int header_type
; /* 0: unset, 1: compact, 2: large */
448 enum channel_type channel_type
;
449 unsigned int metadata_dumped
:1,
450 sys_enter_registered
:1,
451 sys_exit_registered
:1,
453 tstate
:1; /* Transient enable state */
456 struct lttng_metadata_stream
{
457 void *priv
; /* Ring buffer private data */
458 struct lttng_metadata_cache
*metadata_cache
;
459 unsigned int metadata_in
; /* Bytes read from the cache */
460 unsigned int metadata_out
; /* Bytes consumed from stream */
461 int finalized
; /* Has channel been finalized */
462 wait_queue_head_t read_wait
; /* Reader buffer-level wait queue */
463 struct list_head list
; /* Stream list */
464 struct lttng_transport
*transport
;
465 uint64_t version
; /* Current version of the metadata cache */
468 #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
470 struct lttng_dynamic_len_stack
{
471 size_t stack
[LTTNG_DYNAMIC_LEN_STACK_SIZE
];
475 DECLARE_PER_CPU(struct lttng_dynamic_len_stack
, lttng_dynamic_len_stack
);
478 * struct lttng_pid_tracker declared in header due to deferencing of *v
479 * in RCU_INITIALIZER(v).
481 #define LTTNG_PID_HASH_BITS 6
482 #define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS)
484 struct lttng_pid_tracker
{
485 struct hlist_head pid_hash
[LTTNG_PID_TABLE_SIZE
];
488 struct lttng_pid_hash_node
{
489 struct hlist_node hlist
;
493 struct lttng_session
{
494 int active
; /* Is trace session active ? */
495 int been_active
; /* Has trace session been active ? */
496 struct file
*file
; /* File associated to session */
497 struct list_head chan
; /* Channel list head */
498 struct list_head events
; /* Event list head */
499 struct list_head list
; /* Session list */
500 unsigned int free_chan_id
; /* Next chan ID to allocate */
501 uuid_le uuid
; /* Trace session unique ID */
502 struct lttng_metadata_cache
*metadata_cache
;
503 struct lttng_pid_tracker
*pid_tracker
;
504 unsigned int metadata_dumped
:1,
505 tstate
:1; /* Transient enable state */
506 /* List of enablers */
507 struct list_head enablers_head
;
508 /* Hash table of events */
509 struct lttng_event_ht events_ht
;
512 struct lttng_metadata_cache
{
513 char *data
; /* Metadata cache */
514 unsigned int cache_alloc
; /* Metadata allocated size (bytes) */
515 unsigned int metadata_written
; /* Number of bytes written in metadata cache */
516 struct kref refcount
; /* Metadata cache usage */
517 struct list_head metadata_stream
; /* Metadata stream list */
518 uuid_le uuid
; /* Trace session unique ID (copy) */
519 struct mutex lock
; /* Produce/consume lock */
520 uint64_t version
; /* Current version of the metadata */
523 void lttng_lock_sessions(void);
524 void lttng_unlock_sessions(void);
526 struct list_head
*lttng_get_probe_list_head(void);
528 struct lttng_enabler
*lttng_enabler_create(enum lttng_enabler_type type
,
529 struct lttng_kernel_event
*event_param
,
530 struct lttng_channel
*chan
);
532 int lttng_enabler_enable(struct lttng_enabler
*enabler
);
533 int lttng_enabler_disable(struct lttng_enabler
*enabler
);
534 int lttng_fix_pending_events(void);
535 int lttng_session_active(void);
537 struct lttng_session
*lttng_session_create(void);
538 int lttng_session_enable(struct lttng_session
*session
);
539 int lttng_session_disable(struct lttng_session
*session
);
540 void lttng_session_destroy(struct lttng_session
*session
);
541 int lttng_session_metadata_regenerate(struct lttng_session
*session
);
542 int lttng_session_statedump(struct lttng_session
*session
);
543 void metadata_cache_destroy(struct kref
*kref
);
545 struct lttng_channel
*lttng_channel_create(struct lttng_session
*session
,
546 const char *transport_name
,
548 size_t subbuf_size
, size_t num_subbuf
,
549 unsigned int switch_timer_interval
,
550 unsigned int read_timer_interval
,
551 enum channel_type channel_type
);
552 struct lttng_channel
*lttng_global_channel_create(struct lttng_session
*session
,
553 int overwrite
, void *buf_addr
,
554 size_t subbuf_size
, size_t num_subbuf
,
555 unsigned int switch_timer_interval
,
556 unsigned int read_timer_interval
);
558 void lttng_metadata_channel_destroy(struct lttng_channel
*chan
);
559 struct lttng_event
*lttng_event_create(struct lttng_channel
*chan
,
560 struct lttng_kernel_event
*event_param
,
562 const struct lttng_event_desc
*event_desc
,
563 enum lttng_kernel_instrumentation itype
);
564 struct lttng_event
*_lttng_event_create(struct lttng_channel
*chan
,
565 struct lttng_kernel_event
*event_param
,
567 const struct lttng_event_desc
*event_desc
,
568 enum lttng_kernel_instrumentation itype
);
569 struct lttng_event
*lttng_event_compat_old_create(struct lttng_channel
*chan
,
570 struct lttng_kernel_old_event
*old_event_param
,
572 const struct lttng_event_desc
*internal_desc
);
574 int lttng_channel_enable(struct lttng_channel
*channel
);
575 int lttng_channel_disable(struct lttng_channel
*channel
);
576 int lttng_event_enable(struct lttng_event
*event
);
577 int lttng_event_disable(struct lttng_event
*event
);
579 void lttng_transport_register(struct lttng_transport
*transport
);
580 void lttng_transport_unregister(struct lttng_transport
*transport
);
582 void synchronize_trace(void);
583 int lttng_abi_init(void);
584 int lttng_abi_compat_old_init(void);
585 void lttng_abi_exit(void);
586 void lttng_abi_compat_old_exit(void);
588 int lttng_probe_register(struct lttng_probe_desc
*desc
);
589 void lttng_probe_unregister(struct lttng_probe_desc
*desc
);
590 const struct lttng_event_desc
*lttng_event_get(const char *name
);
591 void lttng_event_put(const struct lttng_event_desc
*desc
);
592 int lttng_probes_init(void);
593 void lttng_probes_exit(void);
595 int lttng_metadata_output_channel(struct lttng_metadata_stream
*stream
,
596 struct channel
*chan
);
598 int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node
*node
);
599 struct lttng_pid_tracker
*lttng_pid_tracker_create(void);
600 void lttng_pid_tracker_destroy(struct lttng_pid_tracker
*lpf
);
601 bool lttng_pid_tracker_lookup(struct lttng_pid_tracker
*lpf
, int pid
);
602 int lttng_pid_tracker_add(struct lttng_pid_tracker
*lpf
, int pid
);
603 int lttng_pid_tracker_del(struct lttng_pid_tracker
*lpf
, int pid
);
605 int lttng_session_track_pid(struct lttng_session
*session
, int pid
);
606 int lttng_session_untrack_pid(struct lttng_session
*session
, int pid
);
608 int lttng_session_list_tracker_pids(struct lttng_session
*session
);
610 void lttng_clock_ref(void);
611 void lttng_clock_unref(void);
613 #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
614 int lttng_syscalls_register(struct lttng_channel
*chan
, void *filter
);
615 int lttng_syscalls_unregister(struct lttng_channel
*chan
);
616 int lttng_syscall_filter_enable(struct lttng_channel
*chan
,
618 int lttng_syscall_filter_disable(struct lttng_channel
*chan
,
620 long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
621 struct lttng_kernel_syscall_mask __user
*usyscall_mask
);
623 static inline int lttng_syscalls_register(struct lttng_channel
*chan
, void *filter
)
628 static inline int lttng_syscalls_unregister(struct lttng_channel
*chan
)
633 static inline int lttng_syscall_filter_enable(struct lttng_channel
*chan
,
639 static inline int lttng_syscall_filter_disable(struct lttng_channel
*chan
,
645 static inline long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
646 struct lttng_kernel_syscall_mask __user
*usyscall_mask
)
652 void lttng_filter_sync_state(struct lttng_bytecode_runtime
*runtime
);
653 int lttng_enabler_attach_bytecode(struct lttng_enabler
*enabler
,
654 struct lttng_kernel_filter_bytecode __user
*bytecode
);
655 void lttng_enabler_event_link_bytecode(struct lttng_event
*event
,
656 struct lttng_enabler
*enabler
);
658 int lttng_probes_init(void);
660 extern struct lttng_ctx
*lttng_static_ctx
;
662 int lttng_context_init(void);
663 void lttng_context_exit(void);
664 struct lttng_ctx_field
*lttng_append_context(struct lttng_ctx
**ctx
);
665 void lttng_context_update(struct lttng_ctx
*ctx
);
666 int lttng_find_context(struct lttng_ctx
*ctx
, const char *name
);
667 int lttng_get_context_index(struct lttng_ctx
*ctx
, const char *name
);
668 void lttng_remove_context_field(struct lttng_ctx
**ctx
,
669 struct lttng_ctx_field
*field
);
670 void lttng_destroy_context(struct lttng_ctx
*ctx
);
671 int lttng_add_pid_to_ctx(struct lttng_ctx
**ctx
);
672 int lttng_add_cpu_id_to_ctx(struct lttng_ctx
**ctx
);
673 int lttng_add_procname_to_ctx(struct lttng_ctx
**ctx
);
674 int lttng_add_prio_to_ctx(struct lttng_ctx
**ctx
);
675 int lttng_add_nice_to_ctx(struct lttng_ctx
**ctx
);
676 int lttng_add_vpid_to_ctx(struct lttng_ctx
**ctx
);
677 int lttng_add_tid_to_ctx(struct lttng_ctx
**ctx
);
678 int lttng_add_vtid_to_ctx(struct lttng_ctx
**ctx
);
679 int lttng_add_ppid_to_ctx(struct lttng_ctx
**ctx
);
680 int lttng_add_vppid_to_ctx(struct lttng_ctx
**ctx
);
681 int lttng_add_hostname_to_ctx(struct lttng_ctx
**ctx
);
682 int lttng_add_interruptible_to_ctx(struct lttng_ctx
**ctx
);
683 int lttng_add_need_reschedule_to_ctx(struct lttng_ctx
**ctx
);
684 #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
685 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
);
688 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
)
693 #ifdef CONFIG_PREEMPT_RT_FULL
694 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
);
697 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
)
702 #if defined(CONFIG_PERF_EVENTS) && (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33))
703 int lttng_add_perf_counter_to_ctx(uint32_t type
,
706 struct lttng_ctx
**ctx
);
707 int lttng_cpuhp_perf_counter_online(unsigned int cpu
,
708 struct lttng_cpuhp_node
*node
);
709 int lttng_cpuhp_perf_counter_dead(unsigned int cpu
,
710 struct lttng_cpuhp_node
*node
);
713 int lttng_add_perf_counter_to_ctx(uint32_t type
,
716 struct lttng_ctx
**ctx
)
721 int lttng_cpuhp_perf_counter_online(unsigned int cpu
,
722 struct lttng_cpuhp_node
*node
)
727 int lttng_cpuhp_perf_counter_dead(unsigned int cpu
,
728 struct lttng_cpuhp_node
*node
)
734 int lttng_logger_init(void);
735 void lttng_logger_exit(void);
737 extern int lttng_statedump_start(struct lttng_session
*session
);
739 #ifdef CONFIG_KPROBES
740 int lttng_kprobes_register(const char *name
,
741 const char *symbol_name
,
744 struct lttng_event
*event
);
745 void lttng_kprobes_unregister(struct lttng_event
*event
);
746 void lttng_kprobes_destroy_private(struct lttng_event
*event
);
749 int lttng_kprobes_register(const char *name
,
750 const char *symbol_name
,
753 struct lttng_event
*event
)
759 void lttng_kprobes_unregister(struct lttng_event
*event
)
764 void lttng_kprobes_destroy_private(struct lttng_event
*event
)
769 #ifdef CONFIG_KRETPROBES
770 int lttng_kretprobes_register(const char *name
,
771 const char *symbol_name
,
774 struct lttng_event
*event_entry
,
775 struct lttng_event
*event_exit
);
776 void lttng_kretprobes_unregister(struct lttng_event
*event
);
777 void lttng_kretprobes_destroy_private(struct lttng_event
*event
);
778 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
782 int lttng_kretprobes_register(const char *name
,
783 const char *symbol_name
,
786 struct lttng_event
*event_entry
,
787 struct lttng_event
*event_exit
)
793 void lttng_kretprobes_unregister(struct lttng_event
*event
)
798 void lttng_kretprobes_destroy_private(struct lttng_event
*event
)
803 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
810 int lttng_calibrate(struct lttng_kernel_calibrate
*calibrate
);
812 extern const struct file_operations lttng_tracepoint_list_fops
;
813 extern const struct file_operations lttng_syscall_list_fops
;
815 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,35))
816 #define TRACEPOINT_HAS_DATA_ARG
819 #endif /* _LTTNG_EVENTS_H */