From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 2 May 2016 16:33:13 +0000 (-0400)
Subject: Implement custom field support
X-Git-Tag: v2.9.0-rc1~75
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=f64dd4be1e73872c4eebe25f37b96e2a03de079b;p=lttng-modules.git

Implement custom field support

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/lttng-events.h b/lttng-events.h
index 9d775d57..5d0ef4dc 100644
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -28,6 +28,7 @@
 #include <linux/kprobes.h>
 #include <linux/kref.h>
 #include <wrapper/uuid.h>
+#include <lttng-tracer.h>
 #include <lttng-abi.h>
 #include <lttng-abi-old.h>
 
diff --git a/probes/lttng-events-reset.h b/probes/lttng-events-reset.h
index 8262d83e..3b39233c 100644
--- a/probes/lttng-events-reset.h
+++ b/probes/lttng-events-reset.h
@@ -130,6 +130,18 @@
 #undef ctf_string
 #define ctf_string(_item, _src)
 
+#undef ctf_custom_field
+#define ctf_custom_field(_type, _item, _code)
+
+#undef ctf_custom_type
+#define ctf_custom_type(...)
+
+#undef ctf_custom_code
+#define ctf_custom_code(...)
+
+#undef ctf_align
+#define ctf_align(_type)
+
 /* "nowrite" */
 #undef ctf_integer_nowrite
 #define ctf_integer_nowrite(_type, _item, _src)
diff --git a/probes/lttng-events-write.h b/probes/lttng-events-write.h
index 19041e5d..a1f25237 100644
--- a/probes/lttng-events-write.h
+++ b/probes/lttng-events-write.h
@@ -131,3 +131,117 @@
 #undef ctf_user_string
 #define ctf_user_string(_item, _src)					\
 	_ctf_string(_item, _src, 1, 0)
+
+/* types */
+#undef ctf_integer_type
+#define ctf_integer_type(_type, _src)					\
+	ctf_integer(_type, unused, _src)
+
+#undef ctf_integer_hex_type
+#define ctf_integer_hex_type(_type, _src)				\
+	ctf_integer_hex(_type, unused, _src)
+
+#undef ctf_integer_oct_type
+#define ctf_integer_oct_type(_type, _item, _src)			\
+	ctf_integer_oct(_type, unused, _src)
+
+#undef ctf_integer_network_type
+#define ctf_integer_network_type(_type, _src)				\
+	ctf_integer_network(_type, unused, _src)
+
+#undef ctf_integer_network_hex_type
+#define ctf_integer_network_hex_type(_type, _src)			\
+	ctf_integer_network_hex(_type, unused, _src)
+
+#undef ctf_array_type
+#define ctf_array_type(_type, _src, _length)				\
+	ctf_array(_type, unused, _src, _length)
+
+#undef ctf_array_text_type
+#define ctf_array_text_type(_type, _src, _length)			\
+	ctf_array_text(_type, unused, _src, _length)
+
+#undef ctf_array_bitfield_type
+#define ctf_array_bitfield_type(_type, _src, _length)			\
+	ctf_array_bitfield(_type, unused, _src, _length)
+
+#undef ctf_sequence_type
+#define ctf_sequence_type(_type, _src, _length_type, _src_length) \
+	ctf_sequence(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_sequence_hex_type
+#define ctf_sequence_hex_type(_type, _src, _length_type, _src_length) \
+	ctf_sequence_hex(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_sequence_network_type
+#define ctf_sequence_network_type(_type, _src, _length_type, _src_length) \
+	ctf_sequence_network(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_sequence_text_type
+#define ctf_sequence_text_type(_type, _src, _length_type, _src_length) \
+	ctf_sequence_text(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_sequence_bitfield_type
+#define ctf_sequence_bitfield_type(_type, _src, _length_type, _src_length) \
+	ctf_sequence_bitfield(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_string_type
+#define ctf_string_type(_src)						\
+	ctf_string(unused, _src)
+
+/* user src types */
+#undef ctf_user_integer_type
+#define ctf_user_integer_type(_type, _src)				\
+	ctf_user_integer(_type, unused, _src)
+
+#undef ctf_user_integer_hex_type
+#define ctf_user_integer_hex_type(_type, _src)				\
+	ctf_user_integer_hex(_type, unused, _src)
+
+#undef ctf_user_integer_oct_type
+#define ctf_user_integer_oct_type(_type, _item, _src)			\
+	ctf_user_integer_oct(_type, unused, _src)
+
+#undef ctf_user_integer_network_type
+#define ctf_user_integer_network_type(_type, _src)			\
+	ctf_user_integer_network(_type, unused, _src)
+
+#undef ctf_user_integer_network_hex_type
+#define ctf_user_integer_network_hex_type(_type, _src)			\
+	ctf_user_integer_network_hex(_type, unused, _src)
+
+#undef ctf_user_array_type
+#define ctf_user_array_type(_type, _src, _length)			\
+	ctf_user_array(_type, unused, _src, _length)
+
+#undef ctf_user_array_text_type
+#define ctf_user_array_text_type(_type, _src, _length)			\
+	ctf_user_array_text(_type, unused, _src, _length)
+
+#undef ctf_user_array_bitfield_type
+#define ctf_user_array_bitfield_type(_type, _src, _length)		\
+	ctf_user_array_bitfield(_type, unused, _src, _length)
+
+#undef ctf_user_sequence_type
+#define ctf_user_sequence_type(_type, _src, _length_type, _src_length) \
+	ctf_user_sequence(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_user_sequence_hex_type
+#define ctf_user_sequence_hex_type(_type, _src, _length_type, _src_length) \
+	ctf_user_sequence_hex(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_user_sequence_network_type
+#define ctf_user_sequence_network_type(_type, _src, _length_type, _src_length) \
+	ctf_user_sequence_network(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_user_sequence_text_type
+#define ctf_user_sequence_text_type(_type, _src, _length_type, _src_length) \
+	ctf_user_sequence_text(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_user_sequence_bitfield_type
+#define ctf_user_sequence_bitfield_type(_type, _src, _length_type, _src_length) \
+	ctf_user_sequence_bitfield(_type, unused, _src, _length_type, _src_length)
+
+#undef ctf_user_string_type
+#define ctf_user_string_type(_src)					\
+	ctf_user_string(unused, _src)
diff --git a/probes/lttng-tracepoint-event-impl.h b/probes/lttng-tracepoint-event-impl.h
index 42a4be30..fbedea1c 100644
--- a/probes/lttng-tracepoint-event-impl.h
+++ b/probes/lttng-tracepoint-event-impl.h
@@ -303,6 +303,19 @@ void __event_template_proto___##_name(void);
 	  .user = _user,					\
 	},
 
+
+#undef ctf_custom_field
+#define ctf_custom_field(_type, _item, _code)			\
+	{							\
+		.name = #_item,					\
+		.type = { _type },				\
+		.nowrite = 0,					\
+		.user = 0,					\
+	},
+
+#undef ctf_custom_type
+#define ctf_custom_type(...)	__VA_ARGS__
+
 #undef TP_FIELDS
 #define TP_FIELDS(...)	__VA_ARGS__	/* Only one used in this phase */
 
@@ -404,6 +417,19 @@ static void __event_probe__##_name(void *__data);
 			strlen(_src) + 1;				       \
 	}
 
+#undef ctf_align
+#define ctf_align(_type)						\
+	__event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type));
+
+#undef ctf_custom_field
+#define ctf_custom_field(_type, _item, _code)				\
+	{								\
+		_code							\
+	}
+
+#undef ctf_custom_code
+#define ctf_custom_code(...)		__VA_ARGS__
+
 #undef TP_PROTO
 #define TP_PROTO(...)	__VA_ARGS__
 
@@ -673,6 +699,10 @@ void __event_prepare_filter_stack__##_name(char *__stack_data,		      \
 #undef _ctf_string
 #define _ctf_string(_item, _src, _user, _nowrite)
 
+#undef ctf_align
+#define ctf_align(_type)						\
+	__event_align = max_t(size_t, __event_align, lttng_alignof(_type));
+
 #undef TP_PROTO
 #define TP_PROTO(...)	__VA_ARGS__
 
@@ -682,6 +712,15 @@ void __event_prepare_filter_stack__##_name(char *__stack_data,		      \
 #undef TP_locvar
 #define TP_locvar(...)	__VA_ARGS__
 
+#undef ctf_custom_field
+#define ctf_custom_field(_type, _item, _code)		_code
+
+#undef ctf_custom_code
+#define ctf_custom_code(...)						\
+	{								\
+		__VA_ARGS__						\
+	}
+
 #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
 #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \
 static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto)    \
@@ -896,6 +935,20 @@ static inline size_t __event_get_align__##_name(void *__tp_locvar)	      \
 			__get_dynamic_len(dest));			\
 	}
 
+
+#undef ctf_align
+#define ctf_align(_type)						\
+	lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type));
+
+#undef ctf_custom_field
+#define ctf_custom_field(_type, _item, _code)		_code
+
+#undef ctf_custom_code
+#define ctf_custom_code(...)						\
+	{								\
+		__VA_ARGS__						\
+	}
+
 /* Beware: this get len actually consumes the len value */
 #undef __get_dynamic_len
 #define __get_dynamic_len(field)	this_cpu_ptr(&lttng_dynamic_len_stack)->stack[__dynamic_len_idx++]