#define lttng_is_signed_type(type) (((type) -1) < (type) 1)
-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;
+struct lttng_kernel_channel_buffer;
+struct lttng_kernel_session;
+struct lttng_kernel_ring_buffer_ctx;
/* Type description */
NR_LTTNG_KERNEL_STRING_ENCODING,
};
-enum channel_type {
- PER_CPU_CHANNEL,
- METADATA_CHANNEL,
-};
-
struct lttng_kernel_enum_value {
unsigned long long value;
unsigned int signedness:1;
unsigned int size; /* in bits */
unsigned short alignment; /* in bits */
unsigned int signedness:1,
- reverse_byte_order:1;
+ reverse_byte_order:1,
+ user:1; /* fetch from user-space */
unsigned int base; /* 2, 8, 10, 16, for pretty print */
};
struct lttng_kernel_type_string {
struct lttng_kernel_type_common parent;
enum lttng_kernel_string_encoding encoding;
+ unsigned int user:1; /* fetch from user-space */
};
struct lttng_kernel_type_enum {
struct lttng_kernel_type_common parent;
const struct lttng_kernel_type_common *elem_type;
unsigned int length; /* Num. elems. */
- unsigned int alignment;
+ unsigned int alignment; /* Alignment in bytes before elements. */
enum lttng_kernel_string_encoding encoding;
};
struct lttng_kernel_type_sequence {
struct lttng_kernel_type_common parent;
- const char *length_name; /* Length field name. */
+ const char *length_name; /* Length field name. If NULL, use previous field. */
const struct lttng_kernel_type_common *elem_type;
- unsigned int alignment; /* Alignment before elements. */
+ unsigned int alignment; /* Alignment in bytes before elements. */
enum lttng_kernel_string_encoding encoding;
};
struct lttng_kernel_type_struct {
struct lttng_kernel_type_common parent;
unsigned int nr_fields;
- const struct lttng_kernel_event_field **fields; /* Array of pointers to fields. */
- unsigned int alignment;
+ const struct lttng_kernel_event_field * const *fields; /* Array of pointers to fields. */
+ unsigned int alignment; /* Alignment in bits */
};
struct lttng_kernel_type_variant {
struct lttng_kernel_type_common parent;
- const char *tag_name;
- const struct lttng_kernel_event_field **choices; /* Array of pointers to fields. */
+ const char *tag_name; /* Tag field name. If NULL, use previous field. */
+ const struct lttng_kernel_event_field * const *choices; /* Array of pointers to fields. */
unsigned int nr_choices;
- unsigned int alignment;
+ unsigned int alignment; /* Alignment in bytes */
};
struct lttng_kernel_enum_desc {
const char *name;
- const struct lttng_kernel_enum_entry **entries;
+ const struct lttng_kernel_enum_entry * const *entries;
unsigned int nr_entries;
+ const struct lttng_kernel_probe_desc *probe_desc;
};
/* Event field description */
const char *name;
const struct lttng_kernel_type_common *type;
unsigned int nowrite:1, /* do not write into trace */
- user:1, /* fetch from user-space */
nofilter:1; /* do not consider for filter */
};
-#define lttng_kernel_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \
+#ifndef PARAMS
+#define PARAMS(args...) args
+#endif
+
+#define _lttng_kernel_static_type_integer(_size, _alignment, _signedness, _byte_order, _user, _base) \
((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_integer, { \
.parent = { \
.type = lttng_kernel_type_integer, \
.alignment = (_alignment), \
.signedness = (_signedness), \
.reverse_byte_order = (_byte_order) != __BYTE_ORDER, \
+ .user = (_user), \
.base = (_base), \
}))
-#define lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base) \
- lttng_kernel_static_type_integer(sizeof(_type) * CHAR_BIT, \
+#define lttng_kernel_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \
+ _lttng_kernel_static_type_integer(_size, _alignment, _signedness, _byte_order, 0, _base)
+
+#define lttng_kernel_static_type_user_integer(_size, _alignment, _signedness, _byte_order, _base) \
+ _lttng_kernel_static_type_integer(_size, _alignment, _signedness, _byte_order, 1, _base)
+
+#define _lttng_kernel_static_type_integer_from_type(_type, _byte_order, _user, _base) \
+ _lttng_kernel_static_type_integer(sizeof(_type) * CHAR_BIT, \
lttng_alignof(_type) * CHAR_BIT, \
lttng_is_signed_type(_type), \
- _byte_order, \
- _base)
+ _byte_order, _user, _base)
+
+#define lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base) \
+ _lttng_kernel_static_type_integer_from_type(_type, _byte_order, 0, _base)
+
+#define lttng_kernel_static_type_user_integer_from_type(_type, _byte_order, _base) \
+ _lttng_kernel_static_type_integer_from_type(_type, _byte_order, 1, _base)
#define lttng_kernel_static_type_enum(_desc, _container_type) \
((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_enum, { \
.elem_type = (_elem_type), \
}))
-#define lttng_kernel_static_type_string(_encoding) \
+#define lttng_kernel_static_type_string(_encoding, _user) \
((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_string, { \
.parent = { \
.type = lttng_kernel_type_string, \
}, \
.encoding = lttng_kernel_string_encoding_##_encoding, \
+ .user = (_user), \
}))
-#define lttng_kernel_static_type_struct(_nr_fields, _fields, _alignment) \
- ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_struct, { \
+#define lttng_kernel_static_type_struct_init(_nr_fields, _fields, _alignment) \
+ { \
.parent = { \
.type = lttng_kernel_type_struct, \
}, \
.nr_fields = (_nr_fields), \
.fields = _fields, \
.alignment = (_alignment), \
- }))
+ }
+
+#define lttng_kernel_static_type_struct(_nr_fields, _fields, _alignment) \
+ ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_struct, \
+ lttng_kernel_static_type_struct_init(_nr_fields, PARAMS(_fields), _alignment) \
+ ))
#define lttng_kernel_static_type_variant(_nr_choices, _choices, _tag_name, _alignment) \
((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_variant, { \
.alignment = (_alignment), \
}))
-#define lttng_kernel_static_event_field(_name, _type, _nowrite, _user, _nofilter) \
+#define lttng_kernel_static_event_field(_name, _type, _nowrite, _nofilter) \
__LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_event_field, { \
.name = (_name), \
.type = (_type), \
.nowrite = (_nowrite), \
- .user = (_user), \
.nofilter = (_nofilter), \
})
_fields \
)
-#define lttng_kernel_static_ctx_field(_event_field, _get_size, _get_size_arg, _record, _get_value, _destroy, _priv) \
- __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \
- .event_field = (_event_field), \
- .get_size = (_get_size), \
- .get_size_arg = (_get_size_arg), \
- .record = (_record), \
- .get_value = (_get_value), \
- .destroy = (_destroy), \
- .priv = (_priv), \
- })
-
#define lttng_kernel_static_enum_entry_value(_string, _value) \
__LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \
.start = { \
} \
}),
-union lttng_ctx_value {
- int64_t s64;
- const char *str;
- double d;
-};
-
-/*
- * We need to keep this perf counter field separately from struct
- * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses.
- */
-struct lttng_perf_counter_field {
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 */
- char *name;
- struct lttng_kernel_event_field *event_field;
-};
-
-struct lttng_probe_ctx {
+struct lttng_kernel_probe_ctx {
struct lttng_kernel_event_common *event;
uint8_t interruptible;
};
-struct lttng_kernel_ctx_field {
- const struct lttng_kernel_event_field *event_field;
- size_t (*get_size)(size_t offset);
- size_t (*get_size_arg)(size_t offset, struct lttng_kernel_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan);
- void (*record)(struct lttng_kernel_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan);
- void (*get_value)(struct lttng_kernel_ctx_field *field,
- struct lttng_probe_ctx *lttng_probe_ctx,
- union lttng_ctx_value *value);
- void (*destroy)(struct lttng_kernel_ctx_field *field);
- void *priv;
-};
-
-struct lttng_kernel_ctx {
- struct lttng_kernel_ctx_field *fields;
+struct lttng_kernel_tracepoint_class {
+ void (*probe_callback)(void);
+ const struct lttng_kernel_event_field * const *fields; /* event payload */
unsigned int nr_fields;
- unsigned int allocated_fields;
- size_t largest_align; /* in bytes */
+ const struct lttng_kernel_probe_desc *probe_desc;
};
struct lttng_kernel_event_desc {
const char *event_name; /* lttng-modules name */
const char *event_kname; /* Linux kernel name (tracepoints) */
const struct lttng_kernel_probe_desc *probe_desc;
- void (*probe_callback)(void);
- const struct lttng_kernel_event_field **fields; /* event payload */
- unsigned int nr_fields;
+ const struct lttng_kernel_tracepoint_class *tp_class;
struct module *owner;
};
struct lttng_kernel_probe_desc {
const char *provider_name;
- const struct lttng_kernel_event_desc **event_desc;
+ const struct lttng_kernel_event_desc * const *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_bytecode_node_type {
- LTTNG_BYTECODE_NODE_TYPE_FILTER,
- LTTNG_BYTECODE_NODE_TYPE_CAPTURE,
-};
-
-struct lttng_bytecode_node {
- enum lttng_bytecode_node_type type;
- struct list_head node;
- struct lttng_enabler *enabler;
- struct {
- uint32_t len;
- uint32_t reloc_offset;
- uint64_t seqnum;
- char data[];
- } bc;
-};
-
-/*
- * Bytecode interpreter return value masks.
- */
-enum lttng_bytecode_interpreter_ret {
- LTTNG_INTERPRETER_DISCARD = 0,
- LTTNG_INTERPRETER_RECORD_FLAG = (1ULL << 0),
- /* Other bits are kept for future use. */
-};
-
-struct lttng_interpreter_output;
-
-struct lttng_bytecode_runtime {
- /* Associated bytecode */
- struct lttng_bytecode_node *bc;
- union {
- uint64_t (*filter)(void *filter_data,
- struct lttng_probe_ctx *lttng_probe_ctx,
- const char *filter_stack_data);
- uint64_t (*capture)(void *filter_data,
- const char *capture_stack_data,
- struct lttng_probe_ctx *lttng_probe_ctx,
- struct lttng_interpreter_output *output);
- } interpreter_funcs;
- int link_failed;
- struct list_head node; /* list of bytecode runtime in event */
- struct lttng_kernel_ctx *ctx;
-};
-
/*
- * Objects in a linked-list of enablers, owned by an event.
+ * Result of the run_filter() callback.
*/
-struct lttng_enabler_ref {
- struct list_head node; /* enabler ref list */
- struct lttng_enabler *ref; /* backward ref */
-};
-
-struct lttng_uprobe_handler {
- struct lttng_kernel_event_common *event;
- loff_t offset;
- struct uprobe_consumer up_consumer;
- struct list_head node;
-};
-
-struct lttng_kprobe {
- struct kprobe kp;
- char *symbol_name;
-};
-
-struct lttng_uprobe {
- struct inode *inode;
- struct list_head head;
-};
-
-enum lttng_syscall_entryexit {
- LTTNG_SYSCALL_ENTRY,
- LTTNG_SYSCALL_EXIT,
-};
-
-enum lttng_syscall_abi {
- LTTNG_SYSCALL_ABI_NATIVE,
- LTTNG_SYSCALL_ABI_COMPAT,
+enum lttng_kernel_event_filter_result {
+ LTTNG_KERNEL_EVENT_FILTER_ACCEPT = 0,
+ LTTNG_KERNEL_EVENT_FILTER_REJECT = 1,
};
struct lttng_kernel_event_common_private;
int enabled;
int eval_filter; /* Need to evaluate filters */
- int (*run_filter)(struct lttng_kernel_event_common *event,
+ int (*run_filter)(const struct lttng_kernel_event_common *event,
const char *stack_data,
+ struct lttng_kernel_probe_ctx *probe_ctx,
void *filter_ctx);
};
struct lttng_kernel_event_common parent;
struct lttng_kernel_event_recorder_private *priv; /* Private event record interface */
- struct lttng_channel *chan;
+ struct lttng_kernel_channel_buffer *chan;
};
struct lttng_kernel_notification_ctx {
int eval_capture; /* Need to evaluate capture */
void (*notification_send)(struct lttng_kernel_event_notifier *event_notifier,
const char *stack_data,
- struct lttng_probe_ctx *probe_ctx,
+ struct lttng_kernel_probe_ctx *probe_ctx,
struct lttng_kernel_notification_ctx *notif_ctx);
};
-enum lttng_enabler_format_type {
- LTTNG_ENABLER_FORMAT_STAR_GLOB,
- LTTNG_ENABLER_FORMAT_NAME,
-};
-
-/*
- * Enabler field, within whatever object is enabling an event. Target of
- * backward reference.
- */
-struct lttng_enabler {
- enum lttng_enabler_format_type format_type;
-
- /* head list of struct lttng_bytecode_node */
- struct list_head filter_bytecode_head;
-
- struct lttng_kernel_abi_event event_param;
- unsigned int enabled:1;
-
- uint64_t user_token; /* User-provided token. */
-};
-
-struct lttng_event_enabler {
- struct lttng_enabler base;
- struct list_head node; /* per-session list of enablers */
- struct lttng_channel *chan;
-};
-
-struct lttng_event_notifier_enabler {
- struct lttng_enabler base;
- uint64_t error_counter_index;
- struct list_head node; /* List of event_notifier enablers */
- struct lttng_event_notifier_group *group;
+struct lttng_kernel_channel_buffer_ops {
+ struct lttng_kernel_channel_buffer_ops_private *priv; /* Private channel buffer ops interface. */
- /* head list of struct lttng_bytecode_node */
- struct list_head capture_bytecode_head;
- uint64_t num_captures;
-};
-
-
-static inline
-struct lttng_enabler *lttng_event_enabler_as_enabler(
- struct lttng_event_enabler *event_enabler)
-{
- return &event_enabler->base;
-}
-
-static inline
-struct lttng_enabler *lttng_event_notifier_enabler_as_enabler(
- struct lttng_event_notifier_enabler *event_notifier_enabler)
-{
- return &event_notifier_enabler->base;
-}
-
-struct lttng_channel_ops {
- struct channel *(*channel_create)(const char *name,
- void *priv,
- 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 (*event_reserve)(struct lttng_kernel_ring_buffer_ctx *ctx);
+ void (*event_commit)(struct lttng_kernel_ring_buffer_ctx *ctx);
+ void (*event_write)(struct lttng_kernel_ring_buffer_ctx *ctx, const void *src,
+ size_t len, size_t alignment);
+ void (*event_write_from_user)(struct lttng_kernel_ring_buffer_ctx *ctx,
+ const void *src, size_t len, size_t alignment);
+ void (*event_memset)(struct lttng_kernel_ring_buffer_ctx *ctx,
int c, size_t len);
- void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src,
+ void (*event_strcpy)(struct lttng_kernel_ring_buffer_ctx *ctx, const char *src,
size_t len);
- void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx,
+ void (*event_strcpy_from_user)(struct lttng_kernel_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_counter_ops {
- struct lib_counter *(*counter_create)(size_t nr_dimensions,
- const size_t *max_nr_elem, /* for each dimension */
- int64_t global_sum_step);
- void (*counter_destroy)(struct lib_counter *counter);
- int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes,
- int64_t v);
- /*
- * counter_read reads a specific cpu's counter if @cpu >= 0, or
- * the global aggregation counter if @cpu == -1.
- */
- int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu,
- int64_t *value, bool *overflow, bool *underflow);
- /*
- * counter_aggregate returns the total sum of all per-cpu counters and
- * the global aggregation counter.
- */
- int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes,
- int64_t *value, bool *overflow, bool *underflow);
- int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes);
+ void (*event_pstrcpy_pad)(struct lttng_kernel_ring_buffer_ctx *ctx,
+ const char *src, size_t len);
+ void (*event_pstrcpy_pad_from_user)(struct lttng_kernel_ring_buffer_ctx *ctx,
+ const char __user *src, size_t len);
+ void (*lost_event_too_big)(struct lttng_kernel_channel_buffer *lttng_channel);
};
-struct lttng_transport {
- char *name;
- struct module *owner;
- struct list_head node;
- struct lttng_channel_ops ops;
+enum lttng_kernel_channel_type {
+ LTTNG_KERNEL_CHANNEL_TYPE_BUFFER = 0,
};
-struct lttng_counter_transport {
- char *name;
- struct module *owner;
- struct list_head node;
- struct lttng_counter_ops ops;
-};
+struct lttng_kernel_channel_common_private;
-struct lttng_syscall_filter;
+/* Use container_of() to get child. */
+struct lttng_kernel_channel_common {
+ struct lttng_kernel_channel_common_private *priv; /* Private channel interface. */
-#define LTTNG_EVENT_HT_BITS 12
-#define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
+ enum lttng_kernel_channel_type type;
-struct lttng_event_ht {
- struct hlist_head table[LTTNG_EVENT_HT_SIZE];
+ int enabled;
+ struct lttng_kernel_session *session;
};
-#define LTTNG_EVENT_NOTIFIER_HT_BITS 12
-#define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS)
-
-struct lttng_event_notifier_ht {
- struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE];
-};
+struct lttng_kernel_channel_buffer_private;
-struct lttng_channel {
- unsigned int id;
- struct channel *chan; /* Channel buffers */
- int enabled;
- struct lttng_kernel_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 hlist_head *sc_table; /* for syscall tracing */
- struct hlist_head *compat_sc_table;
- struct hlist_head *sc_exit_table; /* for syscall exit tracing */
- struct hlist_head *compat_sc_exit_table;
- struct hlist_head sc_unknown; /* for unknown syscalls */
- struct hlist_head sc_compat_unknown;
- struct hlist_head sc_exit_unknown;
- struct hlist_head compat_sc_exit_unknown;
- struct lttng_syscall_filter *sc_filter;
- int header_type; /* 0: unset, 1: compact, 2: large */
- enum channel_type channel_type;
- int syscall_all_entry;
- int syscall_all_exit;
- unsigned int metadata_dumped:1,
- sys_enter_registered:1,
- sys_exit_registered:1,
- tstate:1; /* Transient enable state */
-};
+struct lttng_kernel_channel_buffer {
+ struct lttng_kernel_channel_common parent;
+ struct lttng_kernel_channel_buffer_private *priv;
-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 */
- bool coherent; /* Stream in a coherent state */
+ struct lttng_kernel_channel_buffer_ops *ops;
};
#define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack);
/*
- * struct lttng_id_tracker declared in header due to deferencing of *v
+ * struct lttng_kernel_id_tracker declared in header due to deferencing of *v
* in RCU_INITIALIZER(v).
*/
#define LTTNG_ID_HASH_BITS 6
#define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS)
-enum tracker_type {
- TRACKER_PID,
- TRACKER_VPID,
- TRACKER_UID,
- TRACKER_VUID,
- TRACKER_GID,
- TRACKER_VGID,
-
- TRACKER_UNKNOWN,
-};
-
-struct lttng_id_tracker_rcu {
+struct lttng_kernel_id_tracker_rcu {
struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE];
};
-struct lttng_id_tracker {
- struct lttng_session *session;
- enum tracker_type tracker_type;
- struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */
-};
+struct lttng_kernel_id_tracker {
+ struct lttng_kernel_id_tracker_private *priv; /* Private API */
-struct lttng_id_hash_node {
- struct hlist_node hlist;
- int id;
+ struct lttng_kernel_id_tracker_rcu *p; /* RCU dereferenced. */
};
-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_id_tracker pid_tracker;
- struct lttng_id_tracker vpid_tracker;
- struct lttng_id_tracker uid_tracker;
- struct lttng_id_tracker vuid_tracker;
- struct lttng_id_tracker gid_tracker;
- struct lttng_id_tracker vgid_tracker;
- unsigned int metadata_dumped:1,
- tstate:1; /* Transient enable state */
- /* List of event enablers */
- struct list_head enablers_head;
- /* Hash table of events */
- struct lttng_event_ht events_ht;
- char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN];
- char creation_time[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN];
-};
+struct lttng_kernel_session_private;
-struct lttng_counter {
- struct file *file; /* File associated to counter. */
- struct file *owner;
- struct lttng_counter_transport *transport;
- struct lib_counter *counter;
- struct lttng_counter_ops *ops;
-};
+struct lttng_kernel_session {
+ struct lttng_kernel_session_private *priv; /* Private session interface */
-struct lttng_event_notifier_group {
- struct file *file; /* File associated to event notifier group */
- struct file *notif_file; /* File used to expose notifications to userspace. */
- struct list_head node; /* event notifier group list */
- struct list_head enablers_head; /* List of enablers */
- struct list_head event_notifiers_head; /* List of event notifier */
- struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */
- struct lttng_channel_ops *ops;
- struct lttng_transport *transport;
- struct channel *chan; /* Ring buffer channel for event notifier group. */
- struct lib_ring_buffer *buf; /* Ring buffer for event notifier group. */
- wait_queue_head_t read_wait;
- struct irq_work wakeup_pending; /* Pending wakeup irq work. */
- struct lttng_kernel_event_notifier *sc_unknown; /* for unknown syscalls */
- struct lttng_kernel_event_notifier *sc_compat_unknown;
-
- struct lttng_syscall_filter *sc_filter;
-
- struct hlist_head *event_notifier_syscall_dispatch;
- struct hlist_head *event_notifier_compat_syscall_dispatch;
- struct hlist_head *event_notifier_exit_syscall_dispatch;
- struct hlist_head *event_notifier_exit_compat_syscall_dispatch;
-
- struct hlist_head event_notifier_unknown_syscall_dispatch;
- struct hlist_head event_notifier_compat_unknown_syscall_dispatch;
- struct hlist_head event_notifier_exit_unknown_syscall_dispatch;
- struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch;
-
- int syscall_all_entry;
- int syscall_all_exit;
-
- unsigned int sys_enter_registered:1, sys_exit_registered:1;
-
- struct lttng_counter *error_counter;
- size_t error_counter_len;
-};
+ int active; /* Is trace session active ? */
-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 */
- atomic_t producing; /* Metadata being produced (incomplete) */
- 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 */
+ struct lttng_kernel_id_tracker pid_tracker;
+ struct lttng_kernel_id_tracker vpid_tracker;
+ struct lttng_kernel_id_tracker uid_tracker;
+ struct lttng_kernel_id_tracker vuid_tracker;
+ struct lttng_kernel_id_tracker gid_tracker;
+ struct lttng_kernel_id_tracker vgid_tracker;
};
-void lttng_lock_sessions(void);
-void lttng_unlock_sessions(void);
-
-struct list_head *lttng_get_probe_list_head(void);
-
-struct lttng_event_enabler *lttng_event_enabler_create(
- enum lttng_enabler_format_type format_type,
- struct lttng_kernel_abi_event *event_param,
- struct lttng_channel *chan);
-
-int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler);
-int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler);
-struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create(
- struct lttng_event_notifier_group *event_notifier_group,
- enum lttng_enabler_format_type format_type,
- struct lttng_kernel_abi_event_notifier *event_notifier_param);
-
-int lttng_event_notifier_enabler_enable(
- struct lttng_event_notifier_enabler *event_notifier_enabler);
-int lttng_event_notifier_enabler_disable(
- struct lttng_event_notifier_enabler *event_notifier_enabler);
-int lttng_fix_pending_events(void);
-int lttng_fix_pending_event_notifiers(void);
-int lttng_session_active(void);
-bool lttng_event_notifier_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_counter *lttng_kernel_counter_create(
- const char *counter_transport_name, size_t number_dimensions,
- const size_t *dimensions_sizes);
-int lttng_kernel_counter_read(struct lttng_counter *counter,
- const size_t *dimension_indexes, int32_t cpu,
- int64_t *val, bool *overflow, bool *underflow);
-int lttng_kernel_counter_aggregate(struct lttng_counter *counter,
- const size_t *dimension_indexes, int64_t *val,
- bool *overflow, bool *underflow);
-int lttng_kernel_counter_clear(struct lttng_counter *counter,
- const size_t *dimension_indexes);
-
-
-struct lttng_event_notifier_group *lttng_event_notifier_group_create(void);
-int lttng_event_notifier_group_create_error_counter(
- struct file *event_notifier_group_file,
- const struct lttng_kernel_abi_counter_conf *error_counter_conf);
-void lttng_event_notifier_group_destroy(
- struct lttng_event_notifier_group *event_notifier_group);
-
-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_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_channel *chan,
- struct lttng_kernel_abi_event *event_param,
- const struct lttng_kernel_event_desc *event_desc,
- enum lttng_kernel_abi_instrumentation itype);
-struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_channel *chan,
- struct lttng_kernel_abi_event *event_param,
- const struct lttng_kernel_event_desc *event_desc,
- enum lttng_kernel_abi_instrumentation itype);
-struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_channel *chan,
- struct lttng_kernel_abi_old_event *old_event_param,
- const struct lttng_kernel_event_desc *internal_desc);
-
-struct lttng_kernel_event_notifier *lttng_event_notifier_create(
- const struct lttng_kernel_event_desc *event_notifier_desc,
- uint64_t id,
- uint64_t error_counter_idx,
- struct lttng_event_notifier_group *event_notifier_group,
- struct lttng_kernel_abi_event_notifier *event_notifier_param,
- enum lttng_kernel_abi_instrumentation itype);
-struct lttng_kernel_event_notifier *_lttng_event_notifier_create(
- const struct lttng_kernel_event_desc *event_notifier_desc,
- uint64_t id,
- uint64_t error_counter_idx,
- struct lttng_event_notifier_group *event_notifier_group,
- struct lttng_kernel_abi_event_notifier *event_notifier_param,
- enum lttng_kernel_abi_instrumentation itype);
-
-int lttng_channel_enable(struct lttng_channel *channel);
-int lttng_channel_disable(struct lttng_channel *channel);
-int lttng_event_enable(struct lttng_kernel_event_common *event);
-int lttng_event_disable(struct lttng_kernel_event_common *event);
-
-void lttng_transport_register(struct lttng_transport *transport);
-void lttng_transport_unregister(struct lttng_transport *transport);
-
-void lttng_counter_transport_register(struct lttng_counter_transport *transport);
-void lttng_counter_transport_unregister(struct lttng_counter_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_kernel_probe_desc *desc);
-void lttng_probe_unregister(struct lttng_kernel_probe_desc *desc);
-const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name);
-void lttng_event_desc_put(const struct lttng_kernel_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, bool *coherent);
-
-int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node);
-int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf);
-void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu);
-bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id);
-int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id);
-int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id);
-
-int lttng_session_track_id(struct lttng_session *session,
- enum tracker_type tracker_type, int id);
-int lttng_session_untrack_id(struct lttng_session *session,
- enum tracker_type tracker_type, int id);
-
-int lttng_session_list_tracker_ids(struct lttng_session *session,
- enum tracker_type tracker_type);
-
-void lttng_clock_ref(void);
-void lttng_clock_unref(void);
-
-int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc,
- struct lttng_enabler *enabler);
-
-#if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
-int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler);
-int lttng_syscalls_unregister_channel(struct lttng_channel *chan);
-int lttng_syscalls_destroy_event(struct lttng_channel *chan);
-int lttng_syscall_filter_enable_event(
- struct lttng_channel *chan,
- struct lttng_kernel_event_recorder *event);
-int lttng_syscall_filter_disable_event(
- struct lttng_channel *chan,
- struct lttng_kernel_event_recorder *event);
-
-long lttng_channel_syscall_mask(struct lttng_channel *channel,
- struct lttng_kernel_abi_syscall_mask __user *usyscall_mask);
-
-int lttng_syscalls_register_event_notifier(
- struct lttng_event_notifier_enabler *event_notifier_enabler);
-int lttng_syscalls_create_matching_event_notifiers(
- struct lttng_event_notifier_enabler *event_notifier_enabler);
-int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group);
-int lttng_syscall_filter_enable_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
-int lttng_syscall_filter_disable_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
-#else
-static inline int lttng_syscalls_register_event(
- struct lttng_event_enabler *event_enabler)
-{
- return -ENOSYS;
-}
-
-static inline int lttng_syscalls_unregister_channel(struct lttng_channel *chan)
-{
- return 0;
-}
-
-static inline int lttng_syscalls_destroy(struct lttng_channel *chan)
-{
- return 0;
-}
-
-static inline int lttng_syscall_filter_enable_event(struct lttng_channel *chan,
- struct lttng_kernel_event_recorder *event);
-{
- return -ENOSYS;
-}
-
-static inline int lttng_syscall_filter_disable_event(struct lttng_channel *chan,
- struct lttng_kernel_event_recorder *event);
-{
- return -ENOSYS;
-}
-
-static inline long lttng_channel_syscall_mask(struct lttng_channel *channel,
- struct lttng_kernel_syscall_mask __user *usyscall_mask)
-{
- return -ENOSYS;
-}
-
-static inline int lttng_syscalls_register_event_notifier(
- struct lttng_event_notifier_group *group)
-{
- return -ENOSYS;
-}
-
-static inline int lttng_syscalls_unregister_event_notifier_group(
- struct lttng_event_notifier_group *group)
-{
- return 0;
-}
-
-static inline int lttng_syscall_filter_enable_event_notifier(
- struct lttng_event_notifier_group *group,
- const char *name)
-{
- return -ENOSYS;
-}
-
-static inline int lttng_syscall_filter_disable_event_notifier(
- struct lttng_event_notifier_group *group,
- const char *name)
-{
- return -ENOSYS;
-}
-
-#endif
-
-int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler,
- struct lttng_kernel_abi_filter_bytecode __user *bytecode);
-int lttng_event_notifier_enabler_attach_filter_bytecode(
- struct lttng_event_notifier_enabler *event_notifier_enabler,
- struct lttng_kernel_abi_filter_bytecode __user *bytecode);
-int lttng_event_notifier_enabler_attach_capture_bytecode(
- struct lttng_event_notifier_enabler *event_notifier_enabler,
- struct lttng_kernel_abi_capture_bytecode __user *bytecode);
-
-void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc,
- struct lttng_kernel_ctx *ctx,
- struct list_head *instance_bytecode_runtime_head,
- struct list_head *enabler_bytecode_runtime_head);
-void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event);
-
-int lttng_probes_init(void);
-
-extern struct lttng_kernel_ctx *lttng_static_ctx;
-
-int lttng_context_init(void);
-void lttng_context_exit(void);
-int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p,
- const struct lttng_kernel_ctx_field *f);
-void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p);
-struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx,
- size_t index);
-int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name);
-int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name);
-void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx);
-int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx);
-#if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
-int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-#ifdef CONFIG_PREEMPT_RT_FULL
-int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type);
-
-#if defined(CONFIG_CGROUPS) && \
- ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \
- LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
-int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-#if defined(CONFIG_IPC_NS) && \
- (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
-int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
- (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
-int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-#if defined(CONFIG_NET_NS) && \
- (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
-int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-#if defined(CONFIG_PID_NS) && \
- (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
-int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-#if defined(CONFIG_USER_NS) && \
- (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
-int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-#if defined(CONFIG_UTS_NS) && \
- (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
-int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-#if defined(CONFIG_TIME_NS) && \
- (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
-int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx);
-#else
-static inline
-int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx)
-{
- return -ENOSYS;
-}
-#endif
-
-int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx);
-int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx);
-
-#if defined(CONFIG_PERF_EVENTS)
-int lttng_add_perf_counter_to_ctx(uint32_t type,
- uint64_t config,
- const char *name,
- struct lttng_kernel_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_kernel_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_event(const char *name,
- const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_kernel_event_recorder *event);
-void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event);
-void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event);
-int lttng_kprobes_register_event_notifier(const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_kernel_event_notifier *event_notifier);
-void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
-void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier);
-#else
-static inline
-int lttng_kprobes_register_event(const char *name,
- const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_kernel_event_recorder *event)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event)
-{
-}
-
-static inline
-void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event)
-{
-}
-
-static inline
-int lttng_kprobes_register_event_notifier(const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_kernel_event_notifier *event_notifier)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier)
-{
-}
-
-static inline
-void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier)
-{
-}
-#endif
-
-int lttng_event_add_callsite(struct lttng_kernel_event_common *event,
- struct lttng_kernel_abi_event_callsite __user *callsite);
-
-#ifdef CONFIG_UPROBES
-int lttng_uprobes_register_event(const char *name,
- int fd, struct lttng_kernel_event_recorder *event);
-int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event,
- struct lttng_kernel_abi_event_callsite __user *callsite);
-void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event);
-void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event);
-int lttng_uprobes_register_event_notifier(const char *name,
- int fd, struct lttng_kernel_event_notifier *event_notifier);
-void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
-void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier);
-#else
-static inline
-int lttng_uprobes_register_event(const char *name,
- int fd, struct lttng_kernel_event_recorder *event)
-{
- return -ENOSYS;
-}
-
-static inline
-int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event,
- struct lttng_kernel_abi_event_callsite __user *callsite)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event)
-{
-}
-
-static inline
-void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event)
-{
-}
-
-static inline
-int lttng_uprobes_register_event_notifier(const char *name,
- int fd, struct lttng_kernel_event_notifier *event_notifier)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier)
-{
-}
-
-static inline
-void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier)
-{
-}
-#endif
-
-#ifdef CONFIG_KRETPROBES
-int lttng_kretprobes_register(const char *name,
- const char *symbol_name,
- uint64_t offset,
- uint64_t addr,
- struct lttng_kernel_event_recorder *event_entry,
- struct lttng_kernel_event_recorder *event_exit);
-void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event);
-void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event);
-int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *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_kernel_event_recorder *event_entry,
- struct lttng_kernel_event_recorder *event_exit)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event)
-{
-}
-
-static inline
-void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event)
-{
-}
-
-static inline
-int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event,
- int enable)
-{
- return -ENOSYS;
-}
-#endif
-
-int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate);
-
-extern const struct file_operations lttng_tracepoint_list_fops;
-extern const struct file_operations lttng_syscall_list_fops;
+int lttng_kernel_probe_register(struct lttng_kernel_probe_desc *desc);
+void lttng_kernel_probe_unregister(struct lttng_kernel_probe_desc *desc);
-#define TRACEPOINT_HAS_DATA_ARG
+bool lttng_id_tracker_lookup(struct lttng_kernel_id_tracker_rcu *p, int id);
#endif /* _LTTNG_EVENTS_H */