X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=ltt-events.h;h=6cc3753101fb1606de8f1c11fe1f81c504c7553b;hb=6074d5430effe9efb2a1c8486cabcfbcb8eafb63;hp=030ffe02356189b792ebb7b41850eeb115043e54;hpb=d3dbe23cbd102fb87206b6ed78aad28e042ac77e;p=lttng-modules.git

diff --git a/ltt-events.h b/ltt-events.h
index 030ffe02..6cc37531 100644
--- a/ltt-events.h
+++ b/ltt-events.h
@@ -17,6 +17,8 @@
 struct ltt_channel;
 struct ltt_session;
 struct lib_ring_buffer_ctx;
+struct perf_event;
+struct perf_event_attr;
 
 /* Type description */
 
@@ -32,8 +34,9 @@ enum abstract_types {
 
 /* 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,
 };
 
@@ -42,15 +45,17 @@ struct lttng_enum_entry {
 	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),			\
+		  .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,		\
 		},						\
 	}							\
 
@@ -59,6 +64,8 @@ struct lttng_integer_type {
 	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 {
@@ -107,10 +114,30 @@ struct lttng_event_field {
 	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;
 };
 
@@ -135,6 +162,9 @@ struct ltt_event {
 			struct kprobe kp;
 			char *symbol_name;
 		} kprobe;
+		struct {
+			char *symbol_name;
+		} ftrace;
 	} u;
 	struct list_head list;		/* Event list */
 	int metadata_dumped:1;
@@ -150,7 +180,8 @@ struct ltt_channel_ops {
 	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);
@@ -212,13 +243,10 @@ struct ltt_channel *ltt_global_channel_create(struct ltt_session *session,
 				       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);
@@ -233,11 +261,47 @@ void ltt_event_put(const struct lttng_event_desc *desc);
 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);
+#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)
+{
+}
+#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);
+#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)
+{
+}
+#endif
 #endif /* _LTT_EVENTS_H */