X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fevents-internal.h;h=097f5e979723c8a3969f82f3e60e729fb63162ef;hb=b0315544e745613aadcdfefe0c4c336689648c66;hp=f0d0b0dabd30c3eb02014fd2ec4036e9e78e424f;hpb=8a20497ff97f1d3252c753f33c809ac6333589c8;p=lttng-modules.git

diff --git a/include/lttng/events-internal.h b/include/lttng/events-internal.h
index f0d0b0da..097f5e97 100644
--- a/include/lttng/events-internal.h
+++ b/include/lttng/events-internal.h
@@ -216,7 +216,7 @@ struct lttng_kernel_ctx_field {
 	size_t (*get_size)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
 			size_t offset);
 	void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
-			struct lib_ring_buffer_ctx *ctx,
+			struct lttng_kernel_ring_buffer_ctx *ctx,
 			struct lttng_channel *chan);
 	void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
 			struct lttng_ctx_value *value);
@@ -243,6 +243,139 @@ struct lttng_metadata_cache {
 	uint64_t version;		/* Current version of the metadata */
 };
 
+struct lttng_kernel_channel_buffer_ops_private {
+	struct lttng_kernel_channel_buffer_ops *pub;	/* Public channel buffer ops interface */
+
+	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);
+	/*
+	 * 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);
+};
+
+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;
+};
+
 extern struct lttng_kernel_ctx *lttng_static_ctx;
 
 static inline