+++ /dev/null
-/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
- *
- * lttng-events.h
- *
- * Holds LTTng per-session event registry.
- *
- * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#ifndef _LTTNG_EVENTS_H
-#define _LTTNG_EVENTS_H
-
-#include <linux/version.h>
-#include <linux/list.h>
-#include <linux/kprobes.h>
-#include <linux/kref.h>
-#include <lttng-cpuhotplug.h>
-#include <linux/uuid.h>
-#include <wrapper/uprobes.h>
-#include <lttng-tracer.h>
-#include <lttng-abi.h>
-#include <lttng-abi-old.h>
-
-#define lttng_is_signed_type(type) (((type)(-1)) < 0)
-
-struct lttng_channel;
-struct lttng_session;
-struct lttng_metadata_cache;
-struct lib_ring_buffer_ctx;
-struct perf_event;
-struct perf_event_attr;
-struct lib_ring_buffer_config;
-
-/* Type description */
-
-enum abstract_types {
- atype_integer,
- atype_enum,
- atype_array,
- atype_sequence,
- atype_string,
- atype_struct,
- atype_array_compound, /* Array of compound types. */
- atype_sequence_compound, /* Sequence of compound types. */
- atype_variant,
- atype_array_bitfield,
- atype_sequence_bitfield,
- NR_ABSTRACT_TYPES,
-};
-
-enum lttng_string_encodings {
- lttng_encode_none = 0,
- lttng_encode_UTF8 = 1,
- lttng_encode_ASCII = 2,
- NR_STRING_ENCODINGS,
-};
-
-enum channel_type {
- PER_CPU_CHANNEL,
- METADATA_CHANNEL,
-};
-
-struct lttng_enum_value {
- unsigned long long value;
- unsigned int signedness:1;
-};
-
-struct lttng_enum_entry {
- struct lttng_enum_value start, end; /* start and end are inclusive */
- const char *string;
- struct {
- unsigned int is_auto:1;
- } options;
-};
-
-#define __type_integer(_type, _size, _alignment, _signedness, \
- _byte_order, _base, _encoding) \
- { \
- .atype = atype_integer, \
- .u.basic.integer = \
- { \
- .size = (_size) ? : sizeof(_type) * CHAR_BIT, \
- .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \
- .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \
- .reverse_byte_order = _byte_order != __BYTE_ORDER, \
- .base = _base, \
- .encoding = lttng_encode_##_encoding, \
- }, \
- } \
-
-struct lttng_integer_type {
- unsigned int size; /* in bits */
- unsigned short alignment; /* in bits */
- unsigned int signedness:1,
- reverse_byte_order:1;
- unsigned int base; /* 2, 8, 10, 16, for pretty print */
- enum lttng_string_encodings encoding;
-};
-
-union _lttng_basic_type {
- struct lttng_integer_type integer;
- struct {
- const struct lttng_enum_desc *desc; /* Enumeration mapping */
- struct lttng_integer_type container_type;
- } enumeration;
- struct {
- enum lttng_string_encodings encoding;
- } string;
-};
-
-struct lttng_basic_type {
- enum abstract_types atype;
- union {
- union _lttng_basic_type basic;
- } u;
-};
-
-struct lttng_type {
- enum abstract_types atype;
- union {
- union _lttng_basic_type basic;
- struct {
- struct lttng_basic_type elem_type;
- unsigned int length; /* num. elems. */
- unsigned int elem_alignment; /* alignment override */
- } array;
- struct {
- struct lttng_basic_type length_type;
- struct lttng_basic_type elem_type;
- unsigned int elem_alignment; /* alignment override */
- } sequence;
- struct {
- uint32_t nr_fields;
- struct lttng_event_field *fields; /* Array of fields. */
- } _struct;
- struct {
- struct lttng_type *elem_type;
- unsigned int length; /* num. elems. */
- } array_compound;
- struct {
- struct lttng_type *elem_type;
- const char *length_name;
- } sequence_compound;
- struct {
- const char *tag_name;
- struct lttng_event_field *choices; /* Array of fields. */
- uint32_t nr_choices;
- } variant;
- } u;
-};
-
-struct lttng_enum_desc {
- const char *name;
- const struct lttng_enum_entry *entries;
- unsigned int nr_entries;
-};
-
-/* Event field description */
-
-struct lttng_event_field {
- const char *name;
- struct lttng_type type;
- unsigned int nowrite:1, /* do not write into trace */
- user:1; /* fetch from user-space */
-};
-
-union lttng_ctx_value {
- int64_t s64;
- const char *str;
- double d;
-};
-
-/*
- * We need to keep this perf counter field separately from struct
- * lttng_ctx_field because cpu hotplug needs fixed-location addresses.
- */
-struct lttng_perf_counter_field {
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
- struct lttng_cpuhp_node cpuhp_prepare;
- struct lttng_cpuhp_node cpuhp_online;
-#else
- struct notifier_block nb;
- int hp_enable;
-#endif
- struct perf_event_attr *attr;
- struct perf_event **e; /* per-cpu array */
-};
-
-struct lttng_probe_ctx {
- struct lttng_event *event;
- uint8_t interruptible;
-};
-
-struct lttng_ctx_field {
- struct lttng_event_field event_field;
- size_t (*get_size)(size_t offset);
- size_t (*get_size_arg)(size_t offset, struct lttng_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan);
- void (*record)(struct lttng_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan);
- void (*get_value)(struct lttng_ctx_field *field,
- struct lttng_probe_ctx *lttng_probe_ctx,
- union lttng_ctx_value *value);
- union {
- struct lttng_perf_counter_field *perf_counter;
- } u;
- void (*destroy)(struct lttng_ctx_field *field);
- /*
- * Private data to keep state between get_size and record.
- * User must perform its own synchronization to protect against
- * concurrent and reentrant contexts.
- */
- void *priv;
-};
-
-struct lttng_ctx {
- struct lttng_ctx_field *fields;
- unsigned int nr_fields;
- unsigned int allocated_fields;
- size_t largest_align; /* in bytes */
-};
-
-struct lttng_event_desc {
- const char *name; /* lttng-modules name */
- const char *kname; /* Linux kernel name (tracepoints) */
- void *probe_callback;
- const struct lttng_event_ctx *ctx; /* context */
- const struct lttng_event_field *fields; /* event payload */
- unsigned int nr_fields;
- struct module *owner;
-};
-
-struct lttng_probe_desc {
- const char *provider;
- const struct lttng_event_desc **event_desc;
- unsigned int nr_events;
- struct list_head head; /* chain registered probes */
- struct list_head lazy_init_head;
- int lazy; /* lazy registration */
-};
-
-struct lttng_krp; /* Kretprobe handling */
-
-enum lttng_event_type {
- LTTNG_TYPE_EVENT = 0,
- LTTNG_TYPE_ENABLER = 1,
-};
-
-struct lttng_filter_bytecode_node {
- struct list_head node;
- struct lttng_enabler *enabler;
- /*
- * struct lttng_kernel_filter_bytecode has var. sized array, must be
- * last field.
- */
- struct lttng_kernel_filter_bytecode bc;
-};
-
-/*
- * Filter return value masks.
- */
-enum lttng_filter_ret {
- LTTNG_FILTER_DISCARD = 0,
- LTTNG_FILTER_RECORD_FLAG = (1ULL << 0),
- /* Other bits are kept for future use. */
-};
-
-struct lttng_bytecode_runtime {
- /* Associated bytecode */
- struct lttng_filter_bytecode_node *bc;
- uint64_t (*filter)(void *filter_data, struct lttng_probe_ctx *lttng_probe_ctx,
- const char *filter_stack_data);
- int link_failed;
- struct list_head node; /* list of bytecode runtime in event */
- struct lttng_event *event;
-};
-
-/*
- * Objects in a linked-list of enablers, owned by an event.
- */
-struct lttng_enabler_ref {
- struct list_head node; /* enabler ref list */
- struct lttng_enabler *ref; /* backward ref */
-};
-
-struct lttng_uprobe_handler {
- struct lttng_event *event;
- loff_t offset;
- struct uprobe_consumer up_consumer;
- struct list_head node;
-};
-
-/*
- * lttng_event structure is referred to by the tracing fast path. It must be
- * kept small.
- */
-struct lttng_event {
- enum lttng_event_type evtype; /* First field. */
- unsigned int id;
- struct lttng_channel *chan;
- int enabled;
- const struct lttng_event_desc *desc;
- void *filter;
- struct lttng_ctx *ctx;
- enum lttng_kernel_instrumentation instrumentation;
- union {
- struct {
- struct kprobe kp;
- char *symbol_name;
- } kprobe;
- struct {
- struct lttng_krp *lttng_krp;
- char *symbol_name;
- } kretprobe;
- struct {
- char *symbol_name;
- } ftrace;
- struct {
- struct inode *inode;
- struct list_head head;
- } uprobe;
- } u;
- struct list_head list; /* Event list in session */
- unsigned int metadata_dumped:1;
-
- /* Backward references: list of lttng_enabler_ref (ref to enablers) */
- struct list_head enablers_ref_head;
- struct hlist_node hlist; /* session ht of events */
- int registered; /* has reg'd tracepoint probe */
- /* list of struct lttng_bytecode_runtime, sorted by seqnum */
- struct list_head bytecode_runtime_head;
- int has_enablers_without_bytecode;
-};
-
-enum lttng_enabler_type {
- LTTNG_ENABLER_STAR_GLOB,
- LTTNG_ENABLER_NAME,
-};
-
-/*
- * Enabler field, within whatever object is enabling an event. Target of
- * backward reference.
- */
-struct lttng_enabler {
- enum lttng_event_type evtype; /* First field. */
-
- enum lttng_enabler_type type;
-
- struct list_head node; /* per-session list of enablers */
- /* head list of struct lttng_ust_filter_bytecode_node */
- struct list_head filter_bytecode_head;
-
- struct lttng_kernel_event event_param;
- struct lttng_channel *chan;
- struct lttng_ctx *ctx;
- unsigned int enabled:1;
-};
-
-struct lttng_channel_ops {
- struct channel *(*channel_create)(const char *name,
- struct lttng_channel *lttng_chan,
- void *buf_addr,
- size_t subbuf_size, size_t num_subbuf,
- unsigned int switch_timer_interval,
- unsigned int read_timer_interval);
- void (*channel_destroy)(struct channel *chan);
- struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan);
- int (*buffer_has_read_closed_stream)(struct channel *chan);
- void (*buffer_read_close)(struct lib_ring_buffer *buf);
- int (*event_reserve)(struct lib_ring_buffer_ctx *ctx,
- uint32_t event_id);
- void (*event_commit)(struct lib_ring_buffer_ctx *ctx);
- void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src,
- size_t len);
- void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx,
- const void *src, size_t len);
- void (*event_memset)(struct lib_ring_buffer_ctx *ctx,
- int c, size_t len);
- void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src,
- size_t len);
- void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx,
- const char __user *src, size_t len);
- /*
- * packet_avail_size returns the available size in the current
- * packet. Note that the size returned is only a hint, since it
- * may change due to concurrent writes.
- */
- size_t (*packet_avail_size)(struct channel *chan);
- wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu);
- wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
- int (*is_finalized)(struct channel *chan);
- int (*is_disabled)(struct channel *chan);
- int (*timestamp_begin) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *timestamp_begin);
- int (*timestamp_end) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *timestamp_end);
- int (*events_discarded) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *events_discarded);
- int (*content_size) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *content_size);
- int (*packet_size) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *packet_size);
- int (*stream_id) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *stream_id);
- int (*current_timestamp) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *ts);
- int (*sequence_number) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *seq);
- int (*instance_id) (const struct lib_ring_buffer_config *config,
- struct lib_ring_buffer *bufb,
- uint64_t *id);
-};
-
-struct lttng_transport {
- char *name;
- struct module *owner;
- struct list_head node;
- struct lttng_channel_ops ops;
-};
-
-struct lttng_syscall_filter;
-
-#define LTTNG_EVENT_HT_BITS 12
-#define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
-
-struct lttng_event_ht {
- struct hlist_head table[LTTNG_EVENT_HT_SIZE];
-};
-
-struct lttng_channel {
- unsigned int id;
- struct channel *chan; /* Channel buffers */
- int enabled;
- struct lttng_ctx *ctx;
- /* Event ID management */
- struct lttng_session *session;
- struct file *file; /* File associated to channel */
- unsigned int free_event_id; /* Next event ID to allocate */
- struct list_head list; /* Channel list */
- struct lttng_channel_ops *ops;
- struct lttng_transport *transport;
- struct lttng_event **sc_table; /* for syscall tracing */
- struct lttng_event **compat_sc_table;
- struct lttng_event **sc_exit_table; /* for syscall exit tracing */
- struct lttng_event **compat_sc_exit_table;
- struct lttng_event *sc_unknown; /* for unknown syscalls */
- struct lttng_event *sc_compat_unknown;
- struct lttng_event *sc_exit_unknown;
- struct lttng_event *compat_sc_exit_unknown;
- struct lttng_syscall_filter *sc_filter;
- int header_type; /* 0: unset, 1: compact, 2: large */
- enum channel_type channel_type;
- unsigned int metadata_dumped:1,
- sys_enter_registered:1,
- sys_exit_registered:1,
- syscall_all:1,
- tstate:1; /* Transient enable state */
-};
-
-struct lttng_metadata_stream {
- void *priv; /* Ring buffer private data */
- struct lttng_metadata_cache *metadata_cache;
- unsigned int metadata_in; /* Bytes read from the cache */
- unsigned int metadata_out; /* Bytes consumed from stream */
- int finalized; /* Has channel been finalized */
- wait_queue_head_t read_wait; /* Reader buffer-level wait queue */
- struct list_head list; /* Stream list */
- struct lttng_transport *transport;
- uint64_t version; /* Current version of the metadata cache */
-};
-
-#define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
-
-struct lttng_dynamic_len_stack {
- size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE];
- size_t offset;
-};
-
-DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack);
-
-/*
- * struct lttng_pid_tracker declared in header due to deferencing of *v
- * in RCU_INITIALIZER(v).
- */
-#define LTTNG_PID_HASH_BITS 6
-#define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS)
-
-struct lttng_pid_tracker {
- struct hlist_head pid_hash[LTTNG_PID_TABLE_SIZE];
-};
-
-struct lttng_pid_hash_node {
- struct hlist_node hlist;
- int pid;
-};
-
-struct lttng_session {
- int active; /* Is trace session active ? */
- int been_active; /* Has trace session been active ? */
- struct file *file; /* File associated to session */
- struct list_head chan; /* Channel list head */
- struct list_head events; /* Event list head */
- struct list_head list; /* Session list */
- unsigned int free_chan_id; /* Next chan ID to allocate */
- uuid_le uuid; /* Trace session unique ID */
- struct lttng_metadata_cache *metadata_cache;
- struct lttng_pid_tracker *pid_tracker;
- unsigned int metadata_dumped:1,
- tstate:1; /* Transient enable state */
- /* List of enablers */
- struct list_head enablers_head;
- /* Hash table of events */
- struct lttng_event_ht events_ht;
-};
-
-struct lttng_metadata_cache {
- char *data; /* Metadata cache */
- unsigned int cache_alloc; /* Metadata allocated size (bytes) */
- unsigned int metadata_written; /* Number of bytes written in metadata cache */
- struct kref refcount; /* Metadata cache usage */
- struct list_head metadata_stream; /* Metadata stream list */
- uuid_le uuid; /* Trace session unique ID (copy) */
- struct mutex lock; /* Produce/consume lock */
- uint64_t version; /* Current version of the metadata */
-};
-
-void lttng_lock_sessions(void);
-void lttng_unlock_sessions(void);
-
-struct list_head *lttng_get_probe_list_head(void);
-
-struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_type type,
- struct lttng_kernel_event *event_param,
- struct lttng_channel *chan);
-
-int lttng_enabler_enable(struct lttng_enabler *enabler);
-int lttng_enabler_disable(struct lttng_enabler *enabler);
-int lttng_fix_pending_events(void);
-int lttng_session_active(void);
-
-struct lttng_session *lttng_session_create(void);
-int lttng_session_enable(struct lttng_session *session);
-int lttng_session_disable(struct lttng_session *session);
-void lttng_session_destroy(struct lttng_session *session);
-int lttng_session_metadata_regenerate(struct lttng_session *session);
-int lttng_session_statedump(struct lttng_session *session);
-void metadata_cache_destroy(struct kref *kref);
-
-struct lttng_channel *lttng_channel_create(struct lttng_session *session,
- const char *transport_name,
- void *buf_addr,
- size_t subbuf_size, size_t num_subbuf,
- unsigned int switch_timer_interval,
- unsigned int read_timer_interval,
- enum channel_type channel_type);
-struct lttng_channel *lttng_global_channel_create(struct lttng_session *session,
- int overwrite, void *buf_addr,
- size_t subbuf_size, size_t num_subbuf,
- unsigned int switch_timer_interval,
- unsigned int read_timer_interval);
-
-void lttng_metadata_channel_destroy(struct lttng_channel *chan);
-struct lttng_event *lttng_event_create(struct lttng_channel *chan,
- struct lttng_kernel_event *event_param,
- void *filter,
- const struct lttng_event_desc *event_desc,
- enum lttng_kernel_instrumentation itype);
-struct lttng_event *_lttng_event_create(struct lttng_channel *chan,
- struct lttng_kernel_event *event_param,
- void *filter,
- const struct lttng_event_desc *event_desc,
- enum lttng_kernel_instrumentation itype);
-struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan,
- struct lttng_kernel_old_event *old_event_param,
- void *filter,
- const struct lttng_event_desc *internal_desc);
-
-int lttng_channel_enable(struct lttng_channel *channel);
-int lttng_channel_disable(struct lttng_channel *channel);
-int lttng_event_enable(struct lttng_event *event);
-int lttng_event_disable(struct lttng_event *event);
-
-void lttng_transport_register(struct lttng_transport *transport);
-void lttng_transport_unregister(struct lttng_transport *transport);
-
-void synchronize_trace(void);
-int lttng_abi_init(void);
-int lttng_abi_compat_old_init(void);
-void lttng_abi_exit(void);
-void lttng_abi_compat_old_exit(void);
-
-int lttng_probe_register(struct lttng_probe_desc *desc);
-void lttng_probe_unregister(struct lttng_probe_desc *desc);
-const struct lttng_event_desc *lttng_event_get(const char *name);
-void lttng_event_put(const struct lttng_event_desc *desc);
-int lttng_probes_init(void);
-void lttng_probes_exit(void);
-
-int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
- struct channel *chan);
-
-int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node);
-struct lttng_pid_tracker *lttng_pid_tracker_create(void);
-void lttng_pid_tracker_destroy(struct lttng_pid_tracker *lpf);
-bool lttng_pid_tracker_lookup(struct lttng_pid_tracker *lpf, int pid);
-int lttng_pid_tracker_add(struct lttng_pid_tracker *lpf, int pid);
-int lttng_pid_tracker_del(struct lttng_pid_tracker *lpf, int pid);
-
-int lttng_session_track_pid(struct lttng_session *session, int pid);
-int lttng_session_untrack_pid(struct lttng_session *session, int pid);
-
-int lttng_session_list_tracker_pids(struct lttng_session *session);
-
-void lttng_clock_ref(void);
-void lttng_clock_unref(void);
-
-#if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
-int lttng_syscalls_register(struct lttng_channel *chan, void *filter);
-int lttng_syscalls_unregister(struct lttng_channel *chan);
-int lttng_syscall_filter_enable(struct lttng_channel *chan,
- const char *name);
-int lttng_syscall_filter_disable(struct lttng_channel *chan,
- const char *name);
-long lttng_channel_syscall_mask(struct lttng_channel *channel,
- struct lttng_kernel_syscall_mask __user *usyscall_mask);
-#else
-static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter)
-{
- return -ENOSYS;
-}
-
-static inline int lttng_syscalls_unregister(struct lttng_channel *chan)
-{
- return 0;
-}
-
-static inline int lttng_syscall_filter_enable(struct lttng_channel *chan,
- const char *name)
-{
- return -ENOSYS;
-}
-
-static inline int lttng_syscall_filter_disable(struct lttng_channel *chan,
- const char *name)
-{
- return -ENOSYS;
-}
-
-static inline long lttng_channel_syscall_mask(struct lttng_channel *channel,
- struct lttng_kernel_syscall_mask __user *usyscall_mask)
-{
- return -ENOSYS;
-}
-#endif
-
-void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime);
-int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler,
- struct lttng_kernel_filter_bytecode __user *bytecode);
-void lttng_enabler_event_link_bytecode(struct lttng_event *event,
- struct lttng_enabler *enabler);
-
-int lttng_probes_init(void);
-
-extern struct lttng_ctx *lttng_static_ctx;
-
-int lttng_context_init(void);
-void lttng_context_exit(void);
-struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx);
-void lttng_context_update(struct lttng_ctx *ctx);
-int lttng_find_context(struct lttng_ctx *ctx, const char *name);
-int lttng_get_context_index(struct lttng_ctx *ctx, const char *name);
-void lttng_remove_context_field(struct lttng_ctx **ctx,
- struct lttng_ctx_field *field);
-void lttng_destroy_context(struct lttng_ctx *ctx);
-int lttng_add_pid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_procname_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_prio_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_nice_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_tid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_interruptible_to_ctx(struct lttng_ctx **ctx);
-int lttng_add_need_reschedule_to_ctx(struct lttng_ctx **ctx);
-#if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
-int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx);
-#else
-static inline
-int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-#ifdef CONFIG_PREEMPT_RT_FULL
-int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx);
-#else
-static inline
-int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type);
-
-#if defined(CONFIG_PERF_EVENTS)
-int lttng_add_perf_counter_to_ctx(uint32_t type,
- uint64_t config,
- const char *name,
- struct lttng_ctx **ctx);
-int lttng_cpuhp_perf_counter_online(unsigned int cpu,
- struct lttng_cpuhp_node *node);
-int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
- struct lttng_cpuhp_node *node);
-#else
-static inline
-int lttng_add_perf_counter_to_ctx(uint32_t type,
- uint64_t config,
- const char *name,
- struct lttng_ctx **ctx)
-{
- return -ENOSYS;
-}
-static inline
-int lttng_cpuhp_perf_counter_online(unsigned int cpu,
- struct lttng_cpuhp_node *node)
-{
- return 0;
-}
-static inline
-int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
- struct lttng_cpuhp_node *node)
-{
- return 0;
-}
-#endif
-
-int lttng_logger_init(void);
-void lttng_logger_exit(void);
-
-extern int lttng_statedump_start(struct lttng_session *session);
-
-#ifdef CONFIG_KPROBES
-int lttng_kprobes_register(const char *name,
- const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_event *event);
-void lttng_kprobes_unregister(struct lttng_event *event);
-void lttng_kprobes_destroy_private(struct lttng_event *event);
-#else
-static inline
-int lttng_kprobes_register(const char *name,
- const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_event *event)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_kprobes_unregister(struct lttng_event *event)
-{
-}
-
-static inline
-void lttng_kprobes_destroy_private(struct lttng_event *event)
-{
-}
-#endif
-
-int lttng_event_add_callsite(struct lttng_event *event,
- struct lttng_kernel_event_callsite *callsite);
-
-#ifdef CONFIG_UPROBES
-int lttng_uprobes_register(const char *name,
- int fd, struct lttng_event *event);
-int lttng_uprobes_add_callsite(struct lttng_event *event,
- struct lttng_kernel_event_callsite *callsite);
-void lttng_uprobes_unregister(struct lttng_event *event);
-void lttng_uprobes_destroy_private(struct lttng_event *event);
-#else
-static inline
-int lttng_uprobes_register(const char *name,
- int fd, struct lttng_event *event)
-{
- return -ENOSYS;
-}
-
-static inline
-int lttng_uprobes_add_callsite(struct lttng_event *event,
- struct lttng_kernel_event_callsite *callsite)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_uprobes_unregister(struct lttng_event *event)
-{
-}
-
-static inline
-void lttng_uprobes_destroy_private(struct lttng_event *event)
-{
-}
-#endif
-
-#ifdef CONFIG_KRETPROBES
-int lttng_kretprobes_register(const char *name,
- const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_event *event_entry,
- struct lttng_event *event_exit);
-void lttng_kretprobes_unregister(struct lttng_event *event);
-void lttng_kretprobes_destroy_private(struct lttng_event *event);
-int lttng_kretprobes_event_enable_state(struct lttng_event *event,
- int enable);
-#else
-static inline
-int lttng_kretprobes_register(const char *name,
- const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_event *event_entry,
- struct lttng_event *event_exit)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_kretprobes_unregister(struct lttng_event *event)
-{
-}
-
-static inline
-void lttng_kretprobes_destroy_private(struct lttng_event *event)
-{
-}
-
-static inline
-int lttng_kretprobes_event_enable_state(struct lttng_event *event,
- int enable)
-{
- return -ENOSYS;
-}
-#endif
-
-#if defined(CONFIG_DYNAMIC_FTRACE) && !defined(LTTNG_FTRACE_MISSING_HEADER)
-int lttng_ftrace_register(const char *name,
- const char *symbol_name,
- struct lttng_event *event);
-void lttng_ftrace_unregister(struct lttng_event *event);
-void lttng_ftrace_destroy_private(struct lttng_event *event);
-#else
-static inline
-int lttng_ftrace_register(const char *name,
- const char *symbol_name,
- struct lttng_event *event)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_ftrace_unregister(struct lttng_event *event)
-{
-}
-
-static inline
-void lttng_ftrace_destroy_private(struct lttng_event *event)
-{
-}
-#endif
-
-int lttng_calibrate(struct lttng_kernel_calibrate *calibrate);
-
-extern const struct file_operations lttng_tracepoint_list_fops;
-extern const struct file_operations lttng_syscall_list_fops;
-
-#define TRACEPOINT_HAS_DATA_ARG
-
-#endif /* _LTTNG_EVENTS_H */
projects / lttng-modules.git / blobdiff