#define lttng_is_signed_type(type) (((type) -1) < (type) 1)
struct lttng_channel;
-struct lttng_session;
+struct lttng_kernel_session;
struct lttng_metadata_cache;
struct lttng_kernel_ring_buffer_ctx;
struct perf_event;
const char __user *src, size_t len);
};
-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_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_syscall_filter;
#define LTTNG_EVENT_HT_BITS 12
int enabled;
struct lttng_kernel_ctx *ctx;
/* Event ID management */
- struct lttng_session *session;
+ struct lttng_kernel_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 */
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 */
- bool coherent; /* Stream in a coherent state */
-};
-
#define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
struct lttng_dynamic_len_stack {
};
struct lttng_id_tracker {
- struct lttng_session *session;
+ struct lttng_kernel_session *session;
enum tracker_type tracker_type;
struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */
};
-struct lttng_id_hash_node {
- struct hlist_node hlist;
- int id;
-};
+struct lttng_kernel_session_private;
+
+struct lttng_kernel_session {
+ struct lttng_kernel_session_private *priv; /* Private session interface */
-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_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;
};
int lttng_kernel_probe_register(struct lttng_kernel_probe_desc *desc);