struct ltt_channel;
struct ltt_session;
struct lib_ring_buffer_ctx;
+struct perf_event;
+struct perf_event_attr;
/* Type description */
const char *string;
};
-#define __type_integer(_type, _byte_order, _base) \
+#define __type_integer(_type, _byte_order, _base, _encoding) \
{ \
.atype = atype_integer, \
.u.basic.integer = \
{ \
- .size = sizeof(_type), \
+ .size = sizeof(_type) * CHAR_BIT, \
.alignment = ltt_alignof(_type) * CHAR_BIT, \
.signedness = is_signed_type(_type), \
.reverse_byte_order = _byte_order != __BYTE_ORDER, \
.base = _base, \
- .encoding = lttng_encode_none, \
+ .encoding = lttng_encode_##_encoding, \
}, \
} \
struct lttng_type type;
};
+struct lttng_ctx_field {
+ const char *name;
+ struct lttng_type type;
+ void *callback;
+ union {
+ struct {
+ struct perf_event **e; /* per-cpu array */
+ struct list_head head;
+ struct perf_event_attr *attr;
+ } perf_counter;
+ } u;
+};
+
+struct lttng_ctx {
+ struct lttng_ctx_field *fields;
+ unsigned int nr_fields;
+ unsigned int allocated_fields;
+};
+
struct lttng_event_desc {
- const struct lttng_event_field *fields;
const char *name;
void *probe_callback;
+ const struct lttng_event_ctx *ctx; /* context */
+ const struct lttng_event_field *fields; /* event payload */
unsigned int nr_fields;
+ struct module *owner;
};
struct lttng_probe_desc {
void (*channel_destroy)(struct channel *chan);
struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan);
void (*buffer_read_close)(struct lib_ring_buffer *buf);
- int (*event_reserve)(struct lib_ring_buffer_ctx *ctx);
+ int (*event_reserve)(struct lib_ring_buffer_ctx *ctx,
+ uint32_t event_id);
void (*event_commit)(struct lib_ring_buffer_ctx *ctx);
void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src,
size_t len);
size_t subbuf_size, size_t num_subbuf,
unsigned int switch_timer_interval,
unsigned int read_timer_interval);
-void _ltt_channel_destroy(struct ltt_channel *chan);
struct ltt_event *ltt_event_create(struct ltt_channel *chan,
- char *name,
struct lttng_kernel_event *event_param,
void *filter);
-int ltt_event_unregister(struct ltt_event *event);
void ltt_transport_register(struct ltt_transport *transport);
void ltt_transport_unregister(struct ltt_transport *transport);
int ltt_probes_init(void);
void ltt_probes_exit(void);
+#ifdef CONFIG_KPROBES
int lttng_kprobes_register(const char *name,
const char *symbol_name,
uint64_t offset,
uint64_t addr,
struct ltt_event *event);
void lttng_kprobes_unregister(struct ltt_event *event);
+void lttng_kprobes_destroy_private(struct ltt_event *event);
+#else
+static inline
+int lttng_kprobes_register(const char *name,
+ const char *symbol_name,
+ uint64_t offset,
+ uint64_t addr,
+ struct ltt_event *event)
+{
+ return -ENOSYS;
+}
+
+static inline
+void lttng_kprobes_unregister(struct ltt_event *event)
+{
+}
+
+static inline
+void lttng_kprobes_destroy_private(struct ltt_event *event)
+{
+}
+#endif
#ifdef CONFIG_DYNAMIC_FTRACE
int lttng_ftrace_register(const char *name,
const char *symbol_name,
struct ltt_event *event);
void lttng_ftrace_unregister(struct ltt_event *event);
+void lttng_ftrace_destroy_private(struct ltt_event *event);
#else
static inline
int lttng_ftrace_register(const char *name,
const char *symbol_name,
struct ltt_event *event)
{
- return 0;
+ return -ENOSYS;
}
static inline
void lttng_ftrace_unregister(struct ltt_event *event)
{
}
+
+static inline
+void lttng_ftrace_destroy_private(struct ltt_event *event)
+{
+}
#endif
+
+extern const struct file_operations lttng_tracepoint_list_fops;
+
#endif /* _LTT_EVENTS_H */