Function tracer support

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

diff --git a/ltt-events.h b/ltt-events.h
index 030ffe02356189b792ebb7b41850eeb115043e54..e10c66c8f2d92460b8e3684107554e68a9486995 100644 (file)
--- a/ltt-events.h
+++ b/ltt-events.h
@@ -32,8 +32,9 @@ 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,
 };
 
@@ -42,7 +43,7 @@ struct lttng_enum_entry {
        const char *string;
 };
 
-#define __type_integer(_type, _byte_order)                     \
+#define __type_integer(_type, _byte_order, _base)              \
        {                                                       \
            .atype = atype_integer,                             \
            .u.basic.integer =                                  \
@@ -51,6 +52,8 @@ struct lttng_enum_entry {
                  .alignment = ltt_alignof(_type) * CHAR_BIT,   \
                  .signedness = is_signed_type(_type),          \
                  .reverse_byte_order = _byte_order != __BYTE_ORDER,    \
+                 .base = _base,                                \
+                 .encoding = lttng_encode_none,                \
                },                                              \
        }                                                       \
 
@@ -59,6 +62,8 @@ 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 {
@@ -135,6 +140,9 @@ 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;
@@ -240,4 +248,23 @@ int lttng_kprobes_register(const char *name,
                struct ltt_event *event);
 void lttng_kprobes_unregister(struct ltt_event *event);
 
+#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 0;
+}
+
+static inline
+void lttng_ftrace_unregister(struct ltt_event *event)
+{
+}
+#endif
 #endif /* _LTT_EVENTS_H */