struct lttng_channel;
struct lttng_session;
struct lttng_metadata_cache;
-struct lib_ring_buffer_ctx;
+struct lttng_kernel_ring_buffer_ctx;
struct perf_event;
struct perf_event_attr;
struct lib_ring_buffer_config;
struct lttng_kernel_notification_ctx *notif_ctx);
};
-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);
- void (*event_commit)(struct lib_ring_buffer_ctx *ctx);
- void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src,
+struct lttng_kernel_channel_buffer_ops {
+ struct lttng_kernel_channel_buffer_ops_private *priv; /* Private channel buffer ops interface. */
+
+ 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);
- void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx,
+ void (*event_write_from_user)(struct lttng_kernel_ring_buffer_ctx *ctx,
const void *src, size_t len);
- void (*event_memset)(struct lib_ring_buffer_ctx *ctx,
+ 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 {
char *name;
struct module *owner;
struct list_head node;
- struct lttng_channel_ops ops;
+ struct lttng_kernel_channel_buffer_ops ops;
};
struct lttng_counter_transport {
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_kernel_channel_buffer_ops *ops;
struct lttng_transport *transport;
struct hlist_head *sc_table; /* for syscall tracing */
struct hlist_head *compat_sc_table;
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_kernel_channel_buffer_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. */
size_t error_counter_len;
};
-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 */
-};
-
-void lttng_lock_sessions(void);
-void lttng_unlock_sessions(void);
-
-struct list_head *lttng_get_probe_list_head(void);
-
-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_kernel_probe_register(struct lttng_kernel_probe_desc *desc);
+void lttng_kernel_probe_unregister(struct lttng_kernel_probe_desc *desc);
-void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event);
-
-int lttng_probes_init(void);
-
-int lttng_logger_init(void);
-void lttng_logger_exit(void);
-
-extern int lttng_statedump_start(struct lttng_session *session);
-
-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;
+bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id);
#endif /* _LTTNG_EVENTS_H */
projects / lttng-modules.git / blobdiff