X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fevents-internal.h;h=869ea70d050a6f41fac612af18a6cc09aa57995d;hb=8c0393c3679b2f047a723b23e012188b064797d4;hp=6b4189770ee7686f17fb2d88373ce534c34106fb;hpb=8a57ec025ffbe56153748fd69b60118862707182;p=lttng-modules.git diff --git a/include/lttng/events-internal.h b/include/lttng/events-internal.h index 6b418977..869ea70d 100644 --- a/include/lttng/events-internal.h +++ b/include/lttng/events-internal.h @@ -243,6 +243,19 @@ struct lttng_metadata_cache { uint64_t version; /* Current version of the metadata */ }; +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_private { struct lttng_kernel_channel_buffer_ops *pub; /* Public channel buffer ops interface */ @@ -295,6 +308,131 @@ struct lttng_kernel_channel_buffer_ops_private { 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); +}; + +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_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_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. */ + 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; +}; + +struct lttng_transport { + char *name; + struct module *owner; + struct list_head node; + struct lttng_kernel_channel_buffer_ops ops; +}; + +struct lttng_counter_transport { + char *name; + struct module *owner; + struct list_head node; + struct lttng_counter_ops ops; +}; + +struct lttng_kernel_session_private { + struct lttng_kernel_session *pub; /* Public session interface */ + + 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; + 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_id_hash_node { + struct hlist_node hlist; + int id; +}; + +enum tracker_type { + TRACKER_PID, + TRACKER_VPID, + TRACKER_UID, + TRACKER_VUID, + TRACKER_GID, + TRACKER_VGID, + + TRACKER_UNKNOWN, +}; + +struct lttng_kernel_id_tracker_private { + struct lttng_kernel_id_tracker *pub; /* Public interface */ + + struct lttng_kernel_session *session; + enum tracker_type tracker_type; +}; + extern struct lttng_kernel_ctx *lttng_static_ctx; static inline @@ -849,12 +987,12 @@ 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); +struct lttng_kernel_session *lttng_session_create(void); +int lttng_session_enable(struct lttng_kernel_session *session); +int lttng_session_disable(struct lttng_kernel_session *session); +void lttng_session_destroy(struct lttng_kernel_session *session); +int lttng_session_metadata_regenerate(struct lttng_kernel_session *session); +int lttng_session_statedump(struct lttng_kernel_session *session); void metadata_cache_destroy(struct kref *kref); struct lttng_counter *lttng_kernel_counter_create( @@ -875,14 +1013,14 @@ int lttng_event_notifier_group_create_error_counter( void lttng_event_notifier_group_destroy( struct lttng_event_notifier_group *event_notifier_group); -struct lttng_channel *lttng_channel_create(struct lttng_session *session, +struct lttng_channel *lttng_channel_create(struct lttng_kernel_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, +struct lttng_channel *lttng_global_channel_create(struct lttng_kernel_session *session, int overwrite, void *buf_addr, size_t subbuf_size, size_t num_subbuf, unsigned int switch_timer_interval, @@ -942,17 +1080,21 @@ 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); -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, +int lttng_id_tracker_empty_set(struct lttng_kernel_id_tracker *lf); +int lttng_id_tracker_init(struct lttng_kernel_id_tracker *lf, + struct lttng_kernel_session *session, + enum tracker_type type); +void lttng_id_tracker_fini(struct lttng_kernel_id_tracker *lf); +void lttng_id_tracker_destroy(struct lttng_kernel_id_tracker *lf, bool rcu); +int lttng_id_tracker_add(struct lttng_kernel_id_tracker *lf, int id); +int lttng_id_tracker_del(struct lttng_kernel_id_tracker *lf, int id); + +int lttng_session_track_id(struct lttng_kernel_session *session, enum tracker_type tracker_type, int id); -int lttng_session_untrack_id(struct lttng_session *session, +int lttng_session_untrack_id(struct lttng_kernel_session *session, enum tracker_type tracker_type, int id); -int lttng_session_list_tracker_ids(struct lttng_session *session, +int lttng_session_list_tracker_ids(struct lttng_kernel_session *session, enum tracker_type tracker_type); void lttng_clock_ref(void); @@ -965,7 +1107,7 @@ int lttng_probes_init(void); int lttng_logger_init(void); void lttng_logger_exit(void); -extern int lttng_statedump_start(struct lttng_session *session); +extern int lttng_statedump_start(struct lttng_kernel_session *session); int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate);