*/
#include <linux/list.h>
+#include <linux/uuid.h>
+#include <linux/kprobes.h>
#include "ltt-debugfs-abi.h"
struct ltt_channel;
struct ltt_session;
struct lib_ring_buffer_ctx;
+struct perf_event;
+struct perf_event_attr;
/* Type description */
/* Update the string_encodings name table in lttng-types.c along with this enum */
enum lttng_string_encodings {
- lttng_encode_UTF8 = 0,
- lttng_encode_ASCII = 1,
+ lttng_encode_none = 0,
+ lttng_encode_UTF8 = 1,
+ lttng_encode_ASCII = 2,
NR_STRING_ENCODINGS,
};
const char *string;
};
-#define __type_integer(_type, _byte_order) \
+#define __type_integer(_type, _byte_order, _base, _encoding) \
{ \
.atype = atype_integer, \
.u.basic.integer = \
{ \
- .size = sizeof(_type), \
- .alignment = __alignof__(_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_##_encoding, \
}, \
} \
unsigned short alignment; /* in bits */
unsigned int signedness:1;
unsigned int reverse_byte_order:1;
+ unsigned int base; /* 2, 8, 10, 16, for pretty print */
+ enum lttng_string_encodings encoding;
};
union _lttng_basic_type {
struct lttng_event_field {
const char *name;
- const struct lttng_type type;
+ 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;
+ void (*destroy)(struct lttng_ctx_field *field);
+};
+
+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 {
struct ltt_channel *chan;
const struct lttng_event_desc *desc;
void *filter;
- enum instrum_type itype;
+ enum lttng_kernel_instrumentation instrumentation;
+ union {
+ struct {
+ struct kprobe kp;
+ char *symbol_name;
+ } kprobe;
+ struct {
+ char *symbol_name;
+ } ftrace;
+ } u;
struct list_head list; /* Event list */
int metadata_dumped:1;
};
struct ltt_channel_ops {
struct channel *(*channel_create)(const char *name,
- struct ltt_session *session,
+ struct ltt_channel *ltt_chan,
void *buf_addr,
size_t subbuf_size, size_t num_subbuf,
unsigned int switch_timer_interval,
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);
+ /*
+ * 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_reader_wait_queue)(struct ltt_channel *chan);
};
struct list_head list; /* Channel list */
wait_queue_head_t notify_wait; /* Channel addition notif. waitqueue */
struct ltt_channel_ops *ops;
+ int header_type; /* 0: unset, 1: compact, 2: large */
int metadata_dumped:1;
- int header_type:2; /* 0: unset, 1: compact, 2: large */
};
struct ltt_session {
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 */
int metadata_dumped:1;
};
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,
- enum instrum_type itype,
- const struct lttng_event_desc *event_desc,
+ struct lttng_kernel_event *event_param,
void *filter);
-int _ltt_event_unregister(struct ltt_event *event);
-void _ltt_event_destroy(struct ltt_event *event);
void ltt_transport_register(struct ltt_transport *transport);
void ltt_transport_unregister(struct ltt_transport *transport);
void ltt_probe_unregister(struct lttng_probe_desc *desc);
const struct lttng_event_desc *ltt_event_get(const char *name);
void ltt_event_put(const struct lttng_event_desc *desc);
+int ltt_probes_init(void);
+void ltt_probes_exit(void);
+struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx);
+void lttng_destroy_context(struct lttng_ctx *ctx);
+
+#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 -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 */
projects / lttng-modules.git / blobdiff