Version 2.5.6

[lttng-modules.git] / lttng-events.h

diff --git a/lttng-events.h b/lttng-events.h
index 4c1f32288752e092612b791061006654ffcc66d9..7b8294657cc4f6f3d8541a383a4aaa4895ab42fe 100644 (file)
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -39,6 +39,7 @@ struct lttng_metadata_cache;
 struct lib_ring_buffer_ctx;
 struct perf_event;
 struct perf_event_attr;
+struct lib_ring_buffer_config;
 
 /* Type description */
 
@@ -166,10 +167,12 @@ struct lttng_ctx {
        struct lttng_ctx_field *fields;
        unsigned int nr_fields;
        unsigned int allocated_fields;
+       size_t largest_align;   /* in bytes */
 };
 
 struct lttng_event_desc {
-       const char *name;
+       const char *name;               /* lttng-modules name */
+       const char *kname;              /* Linux kernel name (tracepoints) */
        void *probe_callback;
        const struct lttng_event_ctx *ctx;      /* context */
        const struct lttng_event_field *fields; /* event payload */
@@ -234,6 +237,10 @@ struct lttng_channel_ops {
                                      const void *src, size_t len);
        void (*event_memset)(struct lib_ring_buffer_ctx *ctx,
                             int c, size_t len);
+       void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src,
+                            size_t len);
+       void (*event_strcpy_from_user)(struct lib_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
@@ -244,6 +251,27 @@ struct lttng_channel_ops {
        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);
 };
 
 struct lttng_transport {
@@ -283,6 +311,7 @@ struct lttng_metadata_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;
 };
 
 struct lttng_session {
@@ -304,6 +333,8 @@ struct lttng_metadata_cache {
        unsigned int metadata_written;  /* Number of bytes written in metadata cache */
        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;
 };
 
 struct lttng_session *lttng_session_create(void);
@@ -356,8 +387,8 @@ void lttng_event_put(const struct lttng_event_desc *desc);
 int lttng_probes_init(void);
 void lttng_probes_exit(void);
 
-int lttng_metadata_output_channel(struct lttng_channel *chan,
-               struct lttng_metadata_stream *stream);
+int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
+               struct channel *chan);
 
 #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
 int lttng_syscalls_register(struct lttng_channel *chan, void *filter);
@@ -375,6 +406,7 @@ static inline int lttng_syscalls_unregister(struct lttng_channel *chan)
 #endif
 
 struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx);
+void lttng_context_update(struct lttng_ctx *ctx);
 int lttng_find_context(struct lttng_ctx *ctx, const char *name);
 void lttng_remove_context_field(struct lttng_ctx **ctx,
                                struct lttng_ctx_field *field);
@@ -405,6 +437,9 @@ int lttng_add_perf_counter_to_ctx(uint32_t type,
 }
 #endif
 
+int lttng_logger_init(void);
+void lttng_logger_exit(void);
+
 extern int lttng_statedump_start(struct lttng_session *session);
 
 #ifdef CONFIG_KPROBES