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 <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 (LINUX_VERSION_CODE >= 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
;
314 struct list_head list
; /* Event list in session */
315 unsigned int metadata_dumped
:1;
317 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
318 struct list_head enablers_ref_head
;
319 struct hlist_node hlist
; /* session ht of events */
320 int registered
; /* has reg'd tracepoint probe */
321 /* list of struct lttng_bytecode_runtime, sorted by seqnum */
322 struct list_head bytecode_runtime_head
;
323 int has_enablers_without_bytecode
;
326 enum lttng_enabler_type
{
327 LTTNG_ENABLER_WILDCARD
,
332 * Enabler field, within whatever object is enabling an event. Target of
333 * backward reference.
335 struct lttng_enabler
{
336 enum lttng_event_type evtype
; /* First field. */
338 enum lttng_enabler_type type
;
340 struct list_head node
; /* per-session list of enablers */
341 /* head list of struct lttng_ust_filter_bytecode_node */
342 struct list_head filter_bytecode_head
;
344 struct lttng_kernel_event event_param
;
345 struct lttng_channel
*chan
;
346 struct lttng_ctx
*ctx
;
347 unsigned int enabled
:1;
350 struct lttng_channel_ops
{
351 struct channel
*(*channel_create
)(const char *name
,
352 struct lttng_channel
*lttng_chan
,
354 size_t subbuf_size
, size_t num_subbuf
,
355 unsigned int switch_timer_interval
,
356 unsigned int read_timer_interval
);
357 void (*channel_destroy
)(struct channel
*chan
);
358 struct lib_ring_buffer
*(*buffer_read_open
)(struct channel
*chan
);
359 int (*buffer_has_read_closed_stream
)(struct channel
*chan
);
360 void (*buffer_read_close
)(struct lib_ring_buffer
*buf
);
361 int (*event_reserve
)(struct lib_ring_buffer_ctx
*ctx
,
363 void (*event_commit
)(struct lib_ring_buffer_ctx
*ctx
);
364 void (*event_write
)(struct lib_ring_buffer_ctx
*ctx
, const void *src
,
366 void (*event_write_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
367 const void *src
, size_t len
);
368 void (*event_memset
)(struct lib_ring_buffer_ctx
*ctx
,
370 void (*event_strcpy
)(struct lib_ring_buffer_ctx
*ctx
, const char *src
,
372 void (*event_strcpy_from_user
)(struct lib_ring_buffer_ctx
*ctx
,
373 const char __user
*src
, size_t len
);
375 * packet_avail_size returns the available size in the current
376 * packet. Note that the size returned is only a hint, since it
377 * may change due to concurrent writes.
379 size_t (*packet_avail_size
)(struct channel
*chan
);
380 wait_queue_head_t
*(*get_writer_buf_wait_queue
)(struct channel
*chan
, int cpu
);
381 wait_queue_head_t
*(*get_hp_wait_queue
)(struct channel
*chan
);
382 int (*is_finalized
)(struct channel
*chan
);
383 int (*is_disabled
)(struct channel
*chan
);
384 int (*timestamp_begin
) (const struct lib_ring_buffer_config
*config
,
385 struct lib_ring_buffer
*bufb
,
386 uint64_t *timestamp_begin
);
387 int (*timestamp_end
) (const struct lib_ring_buffer_config
*config
,
388 struct lib_ring_buffer
*bufb
,
389 uint64_t *timestamp_end
);
390 int (*events_discarded
) (const struct lib_ring_buffer_config
*config
,
391 struct lib_ring_buffer
*bufb
,
392 uint64_t *events_discarded
);
393 int (*content_size
) (const struct lib_ring_buffer_config
*config
,
394 struct lib_ring_buffer
*bufb
,
395 uint64_t *content_size
);
396 int (*packet_size
) (const struct lib_ring_buffer_config
*config
,
397 struct lib_ring_buffer
*bufb
,
398 uint64_t *packet_size
);
399 int (*stream_id
) (const struct lib_ring_buffer_config
*config
,
400 struct lib_ring_buffer
*bufb
,
401 uint64_t *stream_id
);
402 int (*current_timestamp
) (const struct lib_ring_buffer_config
*config
,
403 struct lib_ring_buffer
*bufb
,
405 int (*sequence_number
) (const struct lib_ring_buffer_config
*config
,
406 struct lib_ring_buffer
*bufb
,
408 int (*instance_id
) (const struct lib_ring_buffer_config
*config
,
409 struct lib_ring_buffer
*bufb
,
413 struct lttng_transport
{
415 struct module
*owner
;
416 struct list_head node
;
417 struct lttng_channel_ops ops
;
420 struct lttng_syscall_filter
;
422 #define LTTNG_EVENT_HT_BITS 12
423 #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
425 struct lttng_event_ht
{
426 struct hlist_head table
[LTTNG_EVENT_HT_SIZE
];
429 struct lttng_channel
{
431 struct channel
*chan
; /* Channel buffers */
433 struct lttng_ctx
*ctx
;
434 /* Event ID management */
435 struct lttng_session
*session
;
436 struct file
*file
; /* File associated to channel */
437 unsigned int free_event_id
; /* Next event ID to allocate */
438 struct list_head list
; /* Channel list */
439 struct lttng_channel_ops
*ops
;
440 struct lttng_transport
*transport
;
441 struct lttng_event
**sc_table
; /* for syscall tracing */
442 struct lttng_event
**compat_sc_table
;
443 struct lttng_event
**sc_exit_table
; /* for syscall exit tracing */
444 struct lttng_event
**compat_sc_exit_table
;
445 struct lttng_event
*sc_unknown
; /* for unknown syscalls */
446 struct lttng_event
*sc_compat_unknown
;
447 struct lttng_event
*sc_exit_unknown
;
448 struct lttng_event
*compat_sc_exit_unknown
;
449 struct lttng_syscall_filter
*sc_filter
;
450 int header_type
; /* 0: unset, 1: compact, 2: large */
451 enum channel_type channel_type
;
452 unsigned int metadata_dumped
:1,
453 sys_enter_registered
:1,
454 sys_exit_registered
:1,
456 tstate
:1; /* Transient enable state */
459 struct lttng_metadata_stream
{
460 void *priv
; /* Ring buffer private data */
461 struct lttng_metadata_cache
*metadata_cache
;
462 unsigned int metadata_in
; /* Bytes read from the cache */
463 unsigned int metadata_out
; /* Bytes consumed from stream */
464 int finalized
; /* Has channel been finalized */
465 wait_queue_head_t read_wait
; /* Reader buffer-level wait queue */
466 struct list_head list
; /* Stream list */
467 struct lttng_transport
*transport
;
468 uint64_t version
; /* Current version of the metadata cache */
471 #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
473 struct lttng_dynamic_len_stack
{
474 size_t stack
[LTTNG_DYNAMIC_LEN_STACK_SIZE
];
478 DECLARE_PER_CPU(struct lttng_dynamic_len_stack
, lttng_dynamic_len_stack
);
481 * struct lttng_id_tracker declared in header due to deferencing of *v
482 * in RCU_INITIALIZER(v).
484 #define LTTNG_ID_HASH_BITS 6
485 #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS)
498 struct lttng_id_tracker_rcu
{
499 struct hlist_head id_hash
[LTTNG_ID_TABLE_SIZE
];
502 struct lttng_id_tracker
{
503 struct lttng_session
*session
;
504 enum tracker_type tracker_type
;
505 struct lttng_id_tracker_rcu
*p
; /* RCU dereferenced. */
508 struct lttng_id_hash_node
{
509 struct hlist_node hlist
;
513 struct lttng_session
{
514 int active
; /* Is trace session active ? */
515 int been_active
; /* Has trace session been active ? */
516 struct file
*file
; /* File associated to session */
517 struct list_head chan
; /* Channel list head */
518 struct list_head events
; /* Event list head */
519 struct list_head list
; /* Session list */
520 unsigned int free_chan_id
; /* Next chan ID to allocate */
521 uuid_le uuid
; /* Trace session unique ID */
522 struct lttng_metadata_cache
*metadata_cache
;
523 struct lttng_id_tracker pid_tracker
;
524 struct lttng_id_tracker vpid_tracker
;
525 struct lttng_id_tracker uid_tracker
;
526 struct lttng_id_tracker vuid_tracker
;
527 struct lttng_id_tracker gid_tracker
;
528 struct lttng_id_tracker vgid_tracker
;
529 unsigned int metadata_dumped
:1,
530 tstate
:1; /* Transient enable state */
531 /* List of enablers */
532 struct list_head enablers_head
;
533 /* Hash table of events */
534 struct lttng_event_ht events_ht
;
537 struct lttng_metadata_cache
{
538 char *data
; /* Metadata cache */
539 unsigned int cache_alloc
; /* Metadata allocated size (bytes) */
540 unsigned int metadata_written
; /* Number of bytes written in metadata cache */
541 struct kref refcount
; /* Metadata cache usage */
542 struct list_head metadata_stream
; /* Metadata stream list */
543 uuid_le uuid
; /* Trace session unique ID (copy) */
544 struct mutex lock
; /* Produce/consume lock */
545 uint64_t version
; /* Current version of the metadata */
548 void lttng_lock_sessions(void);
549 void lttng_unlock_sessions(void);
551 struct list_head
*lttng_get_probe_list_head(void);
553 struct lttng_enabler
*lttng_enabler_create(enum lttng_enabler_type type
,
554 struct lttng_kernel_event
*event_param
,
555 struct lttng_channel
*chan
);
557 int lttng_enabler_enable(struct lttng_enabler
*enabler
);
558 int lttng_enabler_disable(struct lttng_enabler
*enabler
);
559 int lttng_fix_pending_events(void);
560 int lttng_session_active(void);
562 struct lttng_session
*lttng_session_create(void);
563 int lttng_session_enable(struct lttng_session
*session
);
564 int lttng_session_disable(struct lttng_session
*session
);
565 void lttng_session_destroy(struct lttng_session
*session
);
566 int lttng_session_metadata_regenerate(struct lttng_session
*session
);
567 int lttng_session_statedump(struct lttng_session
*session
);
568 void metadata_cache_destroy(struct kref
*kref
);
570 struct lttng_channel
*lttng_channel_create(struct lttng_session
*session
,
571 const char *transport_name
,
573 size_t subbuf_size
, size_t num_subbuf
,
574 unsigned int switch_timer_interval
,
575 unsigned int read_timer_interval
,
576 enum channel_type channel_type
);
577 struct lttng_channel
*lttng_global_channel_create(struct lttng_session
*session
,
578 int overwrite
, void *buf_addr
,
579 size_t subbuf_size
, size_t num_subbuf
,
580 unsigned int switch_timer_interval
,
581 unsigned int read_timer_interval
);
583 void lttng_metadata_channel_destroy(struct lttng_channel
*chan
);
584 struct lttng_event
*lttng_event_create(struct lttng_channel
*chan
,
585 struct lttng_kernel_event
*event_param
,
587 const struct lttng_event_desc
*event_desc
,
588 enum lttng_kernel_instrumentation itype
);
589 struct lttng_event
*_lttng_event_create(struct lttng_channel
*chan
,
590 struct lttng_kernel_event
*event_param
,
592 const struct lttng_event_desc
*event_desc
,
593 enum lttng_kernel_instrumentation itype
);
594 struct lttng_event
*lttng_event_compat_old_create(struct lttng_channel
*chan
,
595 struct lttng_kernel_old_event
*old_event_param
,
597 const struct lttng_event_desc
*internal_desc
);
599 int lttng_channel_enable(struct lttng_channel
*channel
);
600 int lttng_channel_disable(struct lttng_channel
*channel
);
601 int lttng_event_enable(struct lttng_event
*event
);
602 int lttng_event_disable(struct lttng_event
*event
);
604 void lttng_transport_register(struct lttng_transport
*transport
);
605 void lttng_transport_unregister(struct lttng_transport
*transport
);
607 void synchronize_trace(void);
608 int lttng_abi_init(void);
609 int lttng_abi_compat_old_init(void);
610 void lttng_abi_exit(void);
611 void lttng_abi_compat_old_exit(void);
613 int lttng_probe_register(struct lttng_probe_desc
*desc
);
614 void lttng_probe_unregister(struct lttng_probe_desc
*desc
);
615 const struct lttng_event_desc
*lttng_event_get(const char *name
);
616 void lttng_event_put(const struct lttng_event_desc
*desc
);
617 int lttng_probes_init(void);
618 void lttng_probes_exit(void);
620 int lttng_metadata_output_channel(struct lttng_metadata_stream
*stream
,
621 struct channel
*chan
);
623 int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node
*node
);
624 int lttng_id_tracker_empty_set(struct lttng_id_tracker
*lf
);
625 void lttng_id_tracker_destroy(struct lttng_id_tracker
*lf
, bool rcu
);
626 bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu
*p
, int id
);
627 int lttng_id_tracker_add(struct lttng_id_tracker
*lf
, int id
);
628 int lttng_id_tracker_del(struct lttng_id_tracker
*lf
, int id
);
630 int lttng_session_track_id(struct lttng_session
*session
,
631 enum tracker_type tracker_type
, int id
);
632 int lttng_session_untrack_id(struct lttng_session
*session
,
633 enum tracker_type tracker_type
, int id
);
635 int lttng_session_list_tracker_ids(struct lttng_session
*session
,
636 enum tracker_type tracker_type
);
638 void lttng_clock_ref(void);
639 void lttng_clock_unref(void);
641 #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
642 int lttng_syscalls_register(struct lttng_channel
*chan
, void *filter
);
643 int lttng_syscalls_unregister(struct lttng_channel
*chan
);
644 int lttng_syscall_filter_enable(struct lttng_channel
*chan
,
646 int lttng_syscall_filter_disable(struct lttng_channel
*chan
,
648 long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
649 struct lttng_kernel_syscall_mask __user
*usyscall_mask
);
651 static inline int lttng_syscalls_register(struct lttng_channel
*chan
, void *filter
)
656 static inline int lttng_syscalls_unregister(struct lttng_channel
*chan
)
661 static inline int lttng_syscall_filter_enable(struct lttng_channel
*chan
,
667 static inline int lttng_syscall_filter_disable(struct lttng_channel
*chan
,
673 static inline long lttng_channel_syscall_mask(struct lttng_channel
*channel
,
674 struct lttng_kernel_syscall_mask __user
*usyscall_mask
)
680 void lttng_filter_sync_state(struct lttng_bytecode_runtime
*runtime
);
681 int lttng_enabler_attach_bytecode(struct lttng_enabler
*enabler
,
682 struct lttng_kernel_filter_bytecode __user
*bytecode
);
683 void lttng_enabler_event_link_bytecode(struct lttng_event
*event
,
684 struct lttng_enabler
*enabler
);
686 int lttng_probes_init(void);
688 extern struct lttng_ctx
*lttng_static_ctx
;
690 int lttng_context_init(void);
691 void lttng_context_exit(void);
692 struct lttng_ctx_field
*lttng_append_context(struct lttng_ctx
**ctx
);
693 void lttng_context_update(struct lttng_ctx
*ctx
);
694 int lttng_find_context(struct lttng_ctx
*ctx
, const char *name
);
695 int lttng_get_context_index(struct lttng_ctx
*ctx
, const char *name
);
696 void lttng_remove_context_field(struct lttng_ctx
**ctx
,
697 struct lttng_ctx_field
*field
);
698 void lttng_destroy_context(struct lttng_ctx
*ctx
);
699 int lttng_add_pid_to_ctx(struct lttng_ctx
**ctx
);
700 int lttng_add_cpu_id_to_ctx(struct lttng_ctx
**ctx
);
701 int lttng_add_procname_to_ctx(struct lttng_ctx
**ctx
);
702 int lttng_add_prio_to_ctx(struct lttng_ctx
**ctx
);
703 int lttng_add_nice_to_ctx(struct lttng_ctx
**ctx
);
704 int lttng_add_vpid_to_ctx(struct lttng_ctx
**ctx
);
705 int lttng_add_tid_to_ctx(struct lttng_ctx
**ctx
);
706 int lttng_add_vtid_to_ctx(struct lttng_ctx
**ctx
);
707 int lttng_add_ppid_to_ctx(struct lttng_ctx
**ctx
);
708 int lttng_add_vppid_to_ctx(struct lttng_ctx
**ctx
);
709 int lttng_add_hostname_to_ctx(struct lttng_ctx
**ctx
);
710 int lttng_add_interruptible_to_ctx(struct lttng_ctx
**ctx
);
711 int lttng_add_need_reschedule_to_ctx(struct lttng_ctx
**ctx
);
712 #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
713 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
);
716 int lttng_add_preemptible_to_ctx(struct lttng_ctx
**ctx
)
721 #ifdef CONFIG_PREEMPT_RT_FULL
722 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
);
725 int lttng_add_migratable_to_ctx(struct lttng_ctx
**ctx
)
730 #if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
731 int lttng_add_perf_counter_to_ctx(uint32_t type
,
734 struct lttng_ctx
**ctx
);
735 int lttng_cpuhp_perf_counter_online(unsigned int cpu
,
736 struct lttng_cpuhp_node
*node
);
737 int lttng_cpuhp_perf_counter_dead(unsigned int cpu
,
738 struct lttng_cpuhp_node
*node
);
741 int lttng_add_perf_counter_to_ctx(uint32_t type
,
744 struct lttng_ctx
**ctx
)
749 int lttng_cpuhp_perf_counter_online(unsigned int cpu
,
750 struct lttng_cpuhp_node
*node
)
755 int lttng_cpuhp_perf_counter_dead(unsigned int cpu
,
756 struct lttng_cpuhp_node
*node
)
762 int lttng_logger_init(void);
763 void lttng_logger_exit(void);
765 extern int lttng_statedump_start(struct lttng_session
*session
);
767 #ifdef CONFIG_KPROBES
768 int lttng_kprobes_register(const char *name
,
769 const char *symbol_name
,
772 struct lttng_event
*event
);
773 void lttng_kprobes_unregister(struct lttng_event
*event
);
774 void lttng_kprobes_destroy_private(struct lttng_event
*event
);
777 int lttng_kprobes_register(const char *name
,
778 const char *symbol_name
,
781 struct lttng_event
*event
)
787 void lttng_kprobes_unregister(struct lttng_event
*event
)
792 void lttng_kprobes_destroy_private(struct lttng_event
*event
)
797 #ifdef CONFIG_KRETPROBES
798 int lttng_kretprobes_register(const char *name
,
799 const char *symbol_name
,
802 struct lttng_event
*event_entry
,
803 struct lttng_event
*event_exit
);
804 void lttng_kretprobes_unregister(struct lttng_event
*event
);
805 void lttng_kretprobes_destroy_private(struct lttng_event
*event
);
806 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
810 int lttng_kretprobes_register(const char *name
,
811 const char *symbol_name
,
814 struct lttng_event
*event_entry
,
815 struct lttng_event
*event_exit
)
821 void lttng_kretprobes_unregister(struct lttng_event
*event
)
826 void lttng_kretprobes_destroy_private(struct lttng_event
*event
)
831 int lttng_kretprobes_event_enable_state(struct lttng_event
*event
,
838 #if defined(CONFIG_DYNAMIC_FTRACE) && !defined(LTTNG_FTRACE_MISSING_HEADER)
839 int lttng_ftrace_register(const char *name
,
840 const char *symbol_name
,
841 struct lttng_event
*event
);
842 void lttng_ftrace_unregister(struct lttng_event
*event
);
843 void lttng_ftrace_destroy_private(struct lttng_event
*event
);
846 int lttng_ftrace_register(const char *name
,
847 const char *symbol_name
,
848 struct lttng_event
*event
)
854 void lttng_ftrace_unregister(struct lttng_event
*event
)
859 void lttng_ftrace_destroy_private(struct lttng_event
*event
)
864 int lttng_calibrate(struct lttng_kernel_calibrate
*calibrate
);
866 extern const struct file_operations lttng_tracepoint_list_fops
;
867 extern const struct file_operations lttng_syscall_list_fops
;
869 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
870 #define TRACEPOINT_HAS_DATA_ARG
873 #endif /* _LTTNG_EVENTS_H */