* lttng-events.h
*
* Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org>
- * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2009-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
#include <linux/uaccess.h>
#include <linux/debugfs.h>
+#include <linux/rculist.h>
#include "lttng.h"
#include "lttng-types.h"
#include "lttng-probe-user.h"
* enforce name-spacing.
*/
#undef LTTNG_TRACEPOINT_EVENT_MAP
-#define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, tstruct, assign, print) \
+#define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \
LTTNG_TRACEPOINT_EVENT_CLASS(map, \
PARAMS(proto), \
PARAMS(args), \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print)) \
+ PARAMS(fields)) \
LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args))
#undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, tstruct, assign, print) \
+#define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \
LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print)) \
+ PARAMS(fields)) \
LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map)
+#undef LTTNG_TRACEPOINT_EVENT_CODE_MAP
+#define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code, fields) \
+ LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \
+ PARAMS(proto), \
+ PARAMS(args), \
+ PARAMS(_locvar), \
+ PARAMS(_code), \
+ PARAMS(fields)) \
+ LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args))
+
#undef LTTNG_TRACEPOINT_EVENT_CODE
-#define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code, tstruct, assign, print) \
- LTTNG_TRACEPOINT_EVENT_CLASS_CODE(name, \
+#define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code, fields) \
+ LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \
PARAMS(proto), \
PARAMS(args), \
PARAMS(_locvar), \
PARAMS(_code), \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print)) \
- LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(name, name, name, PARAMS(proto), PARAMS(args))
-
-
-#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP
-#define LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP(template, name, map, proto, args, print) \
- LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, map, PARAMS(proto), PARAMS(args))
-
-/* Callbacks are meaningless to LTTng. */
-#undef LTTNG_TRACEPOINT_EVENT_FN_MAP
-#define LTTNG_TRACEPOINT_EVENT_FN_MAP(name, map, proto, args, tstruct, \
- assign, print, reg, unreg) \
- LTTNG_TRACEPOINT_EVENT_MAP(name, map, PARAMS(proto), PARAMS(args), \
- PARAMS(tstruct), PARAMS(assign), PARAMS(print))
-
-#undef LTTNG_TRACEPOINT_EVENT_CONDITION_MAP
-#define LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(name, map, proto, args, cond, tstruct, assign, print) \
- LTTNG_TRACEPOINT_EVENT_MAP(name, map, \
- PARAMS(proto), \
- PARAMS(args), \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print))
-
-#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_CONDITION_MAP
-#define LTTNG_TRACEPOINT_EVENT_INSTANCE_CONDITION_MAP(template, name, map, proto, args, cond) \
- LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, map, PARAMS(proto), PARAMS(args))
+ PARAMS(fields))
/*
* LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function
*/
#undef LTTNG_TRACEPOINT_EVENT
-#define LTTNG_TRACEPOINT_EVENT(name, proto, args, tstruct, assign, print) \
+#define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \
LTTNG_TRACEPOINT_EVENT_MAP(name, name, \
PARAMS(proto), \
PARAMS(args), \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print))
+ PARAMS(fields))
#undef LTTNG_TRACEPOINT_EVENT_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_NOARGS(name, tstruct, assign, print) \
- LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print))
-
-#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT
-#define LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT(template, name, proto, args, print) \
- LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP(template, name, name, \
- PARAMS(proto), PARAMS(args), PARAMS(print_))
-
-#undef LTTNG_TRACEPOINT_EVENT_FN
-#define LTTNG_TRACEPOINT_EVENT_FN(name, proto, args, tstruct, \
- assign, print, reg, unreg) \
- LTTNG_TRACEPOINT_EVENT_FN_MAP(name, name, PARAMS(proto), PARAMS(args), \
- PARAMS(tstruct), PARAMS(assign), PARAMS(print), \
- PARAMS(reg), PARAMS(unreg)) \
+#define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \
+ LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields))
#undef LTTNG_TRACEPOINT_EVENT_INSTANCE
#define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \
#define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \
LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name)
-#undef LTTNG_TRACEPOINT_EVENT_CONDITION
-#define LTTNG_TRACEPOINT_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
- LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(name, name, \
- PARAMS(proto), \
- PARAMS(args), \
- PARAMS(cond), \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print))
-
#undef LTTNG_TRACEPOINT_EVENT_CLASS
-#define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
+#define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \
LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \
- PARAMS(_tstruct), PARAMS(_assign), PARAMS(_print))
+ PARAMS(_fields))
#undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \
- LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_tstruct), \
- PARAMS(_assign), PARAMS(_print))
+#define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \
+ LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields))
/*
* out by the compiler.
*/
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
+/* Reset all macros within TRACEPOINT_EVENT */
+#include "lttng-events-reset.h"
#undef TP_PROTO
-#define TP_PROTO(args...) args
+#define TP_PROTO(...) __VA_ARGS__
#undef TP_ARGS
-#define TP_ARGS(args...) args
+#define TP_ARGS(...) __VA_ARGS__
#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP
#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \
* Each event produce an array of fields.
*/
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
+/* Reset all macros within TRACEPOINT_EVENT */
+#include "lttng-events-reset.h"
+#include "lttng-events-write.h"
+#include "lttng-events-nowrite.h"
-/* Named field types must be defined in lttng-types.h */
-
-#undef __field_full
-#define __field_full(_type, _item, _order, _base) \
+#undef _ctf_integer_ext
+#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \
{ \
.name = #_item, \
- .type = __type_integer(_type, _order, _base, none), \
+ .type = __type_integer(_type, _byte_order, _base, none),\
+ .nowrite = _nowrite, \
+ .user = _user, \
},
-#undef __field
-#define __field(_type, _item) \
- __field_full(_type, _item, __BYTE_ORDER, 10)
-
-#undef __field_ext
-#define __field_ext(_type, _item, _filter_type) \
- __field(_type, _item)
-
-#undef __field_hex
-#define __field_hex(_type, _item) \
- __field_full(_type, _item, __BYTE_ORDER, 16)
-
-#undef __field_oct
-#define __field_oct(_type, _item) \
- __field_full(_type, _item, __BYTE_ORDER, 8)
-
-#undef __field_network
-#define __field_network(_type, _item) \
- __field_full(_type, _item, __BIG_ENDIAN, 10)
-
-#undef __field_network_hex
-#define __field_network_hex(_type, _item) \
- __field_full(_type, _item, __BIG_ENDIAN, 16)
-
-#undef __array_enc_ext
-#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
+#undef _ctf_array_encoded
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
{ \
.name = #_item, \
.type = \
{ \
.atype = atype_array, \
- .u.array = \
+ .u = \
{ \
- .length = _length, \
- .elem_type = __type_integer(_type, _order, _base, _encoding), \
- }, \
+ .array = \
+ { \
+ .elem_type = __type_integer(_type, __BYTE_ORDER, 10, _encoding), \
+ .length = _length, \
+ } \
+ } \
}, \
+ .nowrite = _nowrite, \
+ .user = _user, \
},
-#undef __array
-#define __array(_type, _item, _length) \
- __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none)
-
-#undef __array_text
-#define __array_text(_type, _item, _length) \
- __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8)
-
-#undef __array_hex
-#define __array_hex(_type, _item, _length) \
- __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none)
-
-#undef __dynamic_array_enc_ext
-#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
+#undef _ctf_sequence_encoded
+#define _ctf_sequence_encoded(_type, _item, _src, \
+ _length_type, _src_length, _encoding, \
+ _base, _user, _nowrite) \
{ \
.name = #_item, \
.type = \
{ \
.atype = atype_sequence, \
- .u.sequence = \
+ .u = \
{ \
- .length_type = __type_integer(u32, __BYTE_ORDER, 10, none), \
- .elem_type = __type_integer(_type, _order, _base, _encoding), \
+ .sequence = \
+ { \
+ .length_type = __type_integer(_length_type, __BYTE_ORDER, 10, none), \
+ .elem_type = __type_integer(_type, __BYTE_ORDER, _base, _encoding), \
+ }, \
}, \
}, \
+ .nowrite = _nowrite, \
+ .user = _user, \
},
-#undef __dynamic_array_enc_ext_2
-#define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding) \
- __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding)
-
-#undef __dynamic_array
-#define __dynamic_array(_type, _item, _length) \
- __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none)
-
-#undef __dynamic_array_text
-#define __dynamic_array_text(_type, _item, _length) \
- __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8)
-
-#undef __dynamic_array_hex
-#define __dynamic_array_hex(_type, _item, _length) \
- __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none)
-
-#undef __dynamic_array_network_hex
-#define __dynamic_array_network_hex(_type, _item, _length) \
- __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 16, none)
-
-#undef __dynamic_array_network
-#define __dynamic_array_network(_type, _item, _length) \
- __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 10, none)
-
-#undef __dynamic_array_text_2
-#define __dynamic_array_text_2(_type, _item, _length1, _length2) \
- __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, __BYTE_ORDER, 10, UTF8)
-
-#undef __string
-#define __string(_item, _src) \
+#undef _ctf_string
+#define _ctf_string(_item, _src, _user, _nowrite) \
{ \
.name = #_item, \
.type = \
{ \
.atype = atype_string, \
- .u.basic.string.encoding = lttng_encode_UTF8, \
+ .u = \
+ { \
+ .basic = { .string = { .encoding = lttng_encode_UTF8 } } \
+ }, \
}, \
+ .nowrite = _nowrite, \
+ .user = _user, \
},
-#undef __string_from_user
-#define __string_from_user(_item, _src) \
- __string(_item, _src)
-
-#undef TP_STRUCT__entry
-#define TP_STRUCT__entry(args...) args /* Only one used in this phase */
+#undef TP_FIELDS
+#define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _fields) \
static const struct lttng_event_field __event_fields___##_name[] = { \
- _tstruct \
+ _fields \
};
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
- LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, PARAMS(_tstruct), PARAMS(_assign), \
- PARAMS(_print))
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _fields) \
+ LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, PARAMS(_fields))
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
* Create probe callback prototypes.
*/
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
+/* Reset all macros within TRACEPOINT_EVENT */
+#include "lttng-events-reset.h"
#undef TP_PROTO
-#define TP_PROTO(args...) args
+#define TP_PROTO(...) __VA_ARGS__
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _fields) \
static void __event_probe__##_name(void *__data, _proto);
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _fields) \
static void __event_probe__##_name(void *__data);
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-/*
- * Stage 3.9 of the trace events.
- *
- * Create event descriptions.
- */
-
-/* Named field types must be defined in lttng-types.h */
-
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
-
-#ifndef TP_PROBE_CB
-#define TP_PROBE_CB(_template) &__event_probe__##_template
-#endif
-
-#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \
-static const struct lttng_event_desc __event_desc___##_map = { \
- .fields = __event_fields___##_template, \
- .name = #_map, \
- .kname = #_name, \
- .probe_callback = (void *) TP_PROBE_CB(_template), \
- .nr_fields = ARRAY_SIZE(__event_fields___##_template), \
- .owner = THIS_MODULE, \
-};
-
-#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP
-#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \
- LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map)
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-
/*
* Stage 4 of the trace events.
*
- * Create an array of event description pointers.
- */
-
-/* Named field types must be defined in lttng-types.h */
-
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
-
-#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \
- &__event_desc___##_map,
-
-#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP
-#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \
- LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map)
-
-#define TP_ID1(_token, _system) _token##_system
-#define TP_ID(_token, _system) TP_ID1(_token, _system)
-
-static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = {
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-};
-
-#undef TP_ID1
-#undef TP_ID
-
-
-/*
- * Stage 5 of the trace events.
- *
- * Create a toplevel descriptor for the whole probe.
- */
-
-#define TP_ID1(_token, _system) _token##_system
-#define TP_ID(_token, _system) TP_ID1(_token, _system)
-
-/* non-const because list head will be modified when registered. */
-static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
- .provider = __stringify(TRACE_SYSTEM),
- .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM),
- .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)),
- .head = { NULL, NULL },
- .lazy_init_head = { NULL, NULL },
- .lazy = 0,
-};
-
-#undef TP_ID1
-#undef TP_ID
-
-/*
- * Stage 6 of the trace events.
- *
* Create static inline function that calculates event size.
*/
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
-
-/* Named field types must be defined in lttng-types.h */
+/* Reset all macros within TRACEPOINT_EVENT */
+#include "lttng-events-reset.h"
+#include "lttng-events-write.h"
-#undef __field_full
-#define __field_full(_type, _item, _order, _base) \
+#undef _ctf_integer_ext
+#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \
__event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
__event_len += sizeof(_type);
-#undef __array_enc_ext
-#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
+#undef _ctf_array_encoded
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
__event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
__event_len += sizeof(_type) * (_length);
-#undef __dynamic_array_enc_ext
-#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \
- __event_len += sizeof(u32); \
+#undef _ctf_sequence_encoded
+#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
+ _src_length, _encoding, _base, _user, _nowrite) \
+ __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \
+ __event_len += sizeof(_length_type); \
__event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
- __dynamic_len[__dynamic_len_idx] = (_length); \
+ __dynamic_len[__dynamic_len_idx] = (_src_length); \
__event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \
__dynamic_len_idx++;
-#undef __dynamic_array_enc_ext_2
-#define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \
- __event_len += sizeof(u32); \
- __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
- __dynamic_len[__dynamic_len_idx] = (_length1); \
- __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \
- __dynamic_len_idx++; \
- __dynamic_len[__dynamic_len_idx] = (_length2); \
- __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \
- __dynamic_len_idx++;
-
-#undef __string
-#define __string(_item, _src) \
- __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1;
-
/*
- * strlen_user includes \0. If returns 0, it faulted, so we set size to
+ * ctf_user_string includes \0. If returns 0, it faulted, so we set size to
* 1 (\0 only).
*/
-#undef __string_from_user
-#define __string_from_user(_item, _src) \
- __event_len += __dynamic_len[__dynamic_len_idx++] = \
- max_t(size_t, lttng_strlen_user_inatomic(_src), 1);
+#undef _ctf_string
+#define _ctf_string(_item, _src, _user, _nowrite) \
+ if (_user) \
+ __event_len += __dynamic_len[__dynamic_len_idx++] = \
+ strlen(_src) + 1; \
+ else \
+ __event_len += __dynamic_len[__dynamic_len_idx++] = \
+ max_t(size_t, lttng_strlen_user_inatomic(_src), 1);
#undef TP_PROTO
-#define TP_PROTO(args...) args
+#define TP_PROTO(...) __VA_ARGS__
-#undef TP_STRUCT__entry
-#define TP_STRUCT__entry(args...) args
+#undef TP_FIELDS
+#define TP_FIELDS(...) __VA_ARGS__
#undef TP_locvar
#define TP_locvar(...) __VA_ARGS__
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _fields) \
static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \
void *__tp_locvar, _proto) \
{ \
unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \
struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \
\
- _tstruct \
+ _fields \
return __event_len; \
}
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _fields) \
static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \
void *__tp_locvar) \
{ \
unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \
struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \
\
- _tstruct \
+ _fields \
return __event_len; \
}
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
/*
- * Stage 7 of the trace events.
+ * Stage 4.1 of tracepoint event generation.
*
- * Create static inline function that calculates event payload alignment.
+ * Create static inline function that layout the filter stack data.
+ * We make both write and nowrite data available to the filter.
*/
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
-
-/* Named field types must be defined in lttng-types.h */
-
-#undef __field_full
-#define __field_full(_type, _item, _order, _base) \
- __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
-
-#undef __array_enc_ext
-#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
- __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
-
-#undef __dynamic_array_enc_ext
-#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
- __event_align = max_t(size_t, __event_align, lttng_alignof(u32)); \
- __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
-
-#undef __dynamic_array_enc_ext_2
-#define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\
- __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding)
-
-#undef __string
-#define __string(_item, _src)
+/* Reset all macros within TRACEPOINT_EVENT */
+#include "lttng-events-reset.h"
+#include "lttng-events-write.h"
+#include "lttng-events-nowrite.h"
+
+#undef _ctf_integer_ext_fetched
+#define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \
+ if (lttng_is_signed_type(_type)) { \
+ int64_t __ctf_tmp_int64; \
+ switch (sizeof(_type)) { \
+ case 1: \
+ { \
+ union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_int64 = (int64_t) __tmp.v; \
+ break; \
+ } \
+ case 2: \
+ { \
+ union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_int64 = (int64_t) __tmp.v; \
+ break; \
+ } \
+ case 4: \
+ { \
+ union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_int64 = (int64_t) __tmp.v; \
+ break; \
+ } \
+ case 8: \
+ { \
+ union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_int64 = (int64_t) __tmp.v; \
+ break; \
+ } \
+ default: \
+ BUG_ON(1); \
+ }; \
+ memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \
+ } else { \
+ uint64_t __ctf_tmp_uint64; \
+ switch (sizeof(_type)) { \
+ case 1: \
+ { \
+ union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_uint64 = (uint64_t) __tmp.v; \
+ break; \
+ } \
+ case 2: \
+ { \
+ union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_uint64 = (uint64_t) __tmp.v; \
+ break; \
+ } \
+ case 4: \
+ { \
+ union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_uint64 = (uint64_t) __tmp.v; \
+ break; \
+ } \
+ case 8: \
+ { \
+ union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \
+ __ctf_tmp_uint64 = (uint64_t) __tmp.v; \
+ break; \
+ } \
+ default: \
+ BUG_ON(1); \
+ }; \
+ memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \
+ } \
+ __stack_data += sizeof(int64_t);
+
+#undef _ctf_integer_ext_isuser0
+#define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \
+ _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite)
+
+#undef _ctf_integer_ext_isuser1
+#define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \
+{ \
+ __typeof__(_user_src) _src; \
+ if (get_user(_src, &(_user_src))) \
+ _src = 0; \
+ _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \
+}
-#undef __string_from_user
-#define __string_from_user(_item, _src)
+#undef _ctf_integer_ext
+#define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \
+ _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite)
+
+#undef _ctf_array_encoded
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
+ { \
+ unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \
+ const void *__ctf_tmp_ptr = (_src); \
+ memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \
+ __stack_data += sizeof(unsigned long); \
+ memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \
+ __stack_data += sizeof(void **); \
+ }
+
+#undef _ctf_sequence_encoded
+#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
+ _src_length, _encoding, _base, _user, _nowrite) \
+ { \
+ unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \
+ const void *__ctf_tmp_ptr = (_src); \
+ memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \
+ __stack_data += sizeof(unsigned long); \
+ memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \
+ __stack_data += sizeof(void **); \
+ }
+
+#undef _ctf_string
+#define _ctf_string(_item, _src, _user, _nowrite) \
+ { \
+ const void *__ctf_tmp_ptr = (_src); \
+ memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \
+ __stack_data += sizeof(void **); \
+ }
#undef TP_PROTO
-#define TP_PROTO(args...) args
+#define TP_PROTO(...) __VA_ARGS__
-#undef TP_STRUCT__entry
-#define TP_STRUCT__entry(args...) args
+#undef TP_FIELDS
+#define TP_FIELDS(...) __VA_ARGS__
#undef TP_locvar
#define TP_locvar(...) __VA_ARGS__
-#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
-static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \
+#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _fields) \
+static inline \
+void __event_prepare_filter_stack__##_name(char *__stack_data, \
+ void *__tp_locvar) \
{ \
- size_t __event_align = 1; \
struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \
\
- _tstruct \
- return __event_align; \
+ _fields \
}
-#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
-static inline size_t __event_get_align__##_name(void *__tp_locvar) \
+#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _fields) \
+static inline \
+void __event_prepare_filter_stack__##_name(char *__stack_data, \
+ void *__tp_locvar, _proto) \
{ \
- size_t __event_align = 1; \
struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \
\
- _tstruct \
- return __event_align; \
+ _fields \
}
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
/*
- * Stage 8 of the trace events.
+ * Stage 5 of the trace events.
*
- * Create structure declaration that allows the "assign" macros to access the
- * field types.
+ * Create static inline function that calculates event payload alignment.
*/
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
+/* Reset all macros within TRACEPOINT_EVENT */
+#include "lttng-events-reset.h"
+#include "lttng-events-write.h"
-/* Named field types must be defined in lttng-types.h */
+#undef _ctf_integer_ext
+#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \
+ __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
-#undef __field_full
-#define __field_full(_type, _item, _order, _base) _type _item;
+#undef _ctf_array_encoded
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
+ __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
-#undef __array_enc_ext
-#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
- _type _item;
+#undef _ctf_sequence_encoded
+#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
+ _src_length, _encoding, _base, _user, _nowrite) \
+ __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \
+ __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
-#undef __dynamic_array_enc_ext
-#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
- _type _item;
+#undef _ctf_string
+#define _ctf_string(_item, _src, _user, _nowrite)
-#undef __dynamic_array_enc_ext_2
-#define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\
- __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding)
+#undef TP_PROTO
+#define TP_PROTO(...) __VA_ARGS__
-#undef __string
-#define __string(_item, _src) char _item;
+#undef TP_FIELDS
+#define TP_FIELDS(...) __VA_ARGS__
-#undef __string_from_user
-#define __string_from_user(_item, _src) \
- __string(_item, _src)
+#undef TP_locvar
+#define TP_locvar(...) __VA_ARGS__
-#undef TP_STRUCT__entry
-#define TP_STRUCT__entry(args...) args
+#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _fields) \
+static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \
+{ \
+ size_t __event_align = 1; \
+ struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \
+ \
+ _fields \
+ return __event_align; \
+}
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
-struct __event_typemap__##_name { \
- _tstruct \
-};
-
-#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
- LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print)
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _fields) \
+static inline size_t __event_get_align__##_name(void *__tp_locvar) \
+{ \
+ size_t __event_align = 1; \
+ struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \
+ \
+ _fields \
+ return __event_align; \
+}
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
/*
- * Stage 9 of the trace events.
- *
- * Create the probe function : call even size calculation and write event data
- * into the buffer.
+ * Stage 6 of tracepoint event generation.
*
- * We use both the field and assignment macros to write the fields in the order
- * defined in the field declaration. The field declarations control the
- * execution order, jumping to the appropriate assignment block.
+ * Create the probe function. This function calls event size calculation
+ * and writes event data into the buffer.
*/
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
-
-#undef __field_full
-#define __field_full(_type, _item, _order, _base) \
- goto __assign_##_item; \
-__end_field_##_item:
-
-#undef __array_enc_ext
-#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
- goto __assign_##_item; \
-__end_field_##_item:
-
-#undef __dynamic_array_enc_ext
-#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
- goto __assign_##_item##_1; \
-__end_field_##_item##_1: \
- goto __assign_##_item##_2; \
-__end_field_##_item##_2:
-
-#undef __dynamic_array_enc_ext_2
-#define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\
- goto __assign_##_item##_1; \
-__end_field_##_item##_1: \
- goto __assign_##_item##_2; \
-__end_field_##_item##_2: \
- goto __assign_##_item##_3; \
-__end_field_##_item##_3:
-
-#undef __string
-#define __string(_item, _src) \
- goto __assign_##_item; \
-__end_field_##_item:
-
-#undef __string_from_user
-#define __string_from_user(_item, _src) \
- __string(_item, _src)
+/* Reset all macros within TRACEPOINT_EVENT */
+#include "lttng-events-reset.h"
+#include "lttng-events-write.h"
-/*
- * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to
- * strcpy().
- */
-#undef tp_assign
-#define tp_assign(dest, src) \
-__assign_##dest: \
+#undef _ctf_integer_ext_fetched
+#define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \
{ \
- __typeof__(__typemap.dest) __tmp = (src); \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp)); \
+ _type __tmp = _src; \
+ lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\
__chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\
- } \
- goto __end_field_##dest;
-
-/* fixed length array memcpy */
-#undef tp_memcpy_gen
-#define tp_memcpy_gen(write_ops, dest, src, len) \
-__assign_##dest: \
- if (0) \
- (void) __typemap.dest; \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \
- __chan->ops->write_ops(&__ctx, src, len); \
- goto __end_field_##dest;
-
-#undef tp_memcpy
-#define tp_memcpy(dest, src, len) \
- tp_memcpy_gen(event_write, dest, src, len)
-
-#undef tp_memcpy_from_user
-#define tp_memcpy_from_user(dest, src, len) \
- tp_memcpy_gen(event_write_from_user, dest, src, len)
-
-/* variable length sequence memcpy */
-#undef tp_memcpy_dyn_gen
-#define tp_memcpy_dyn_gen(write_ops, dest, src) \
-__assign_##dest##_1: \
- { \
- u32 __tmpl = __dynamic_len[__dynamic_len_idx]; \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \
- __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \
- } \
- goto __end_field_##dest##_1; \
-__assign_##dest##_2: \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \
- __chan->ops->write_ops(&__ctx, src, \
- sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\
- goto __end_field_##dest##_2;
-
-#undef tp_memcpy_dyn_gen_2
-#define tp_memcpy_dyn_gen_2(write_ops, dest, src1, src2) \
-__assign_##dest##_1: \
+ }
+
+#undef _ctf_integer_ext_isuser0
+#define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \
+ _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite)
+
+#undef _ctf_integer_ext_isuser1
+#define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \
+{ \
+ __typeof__(_user_src) _src; \
+ if (get_user(_src, &(_user_src))) \
+ _src = 0; \
+ _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \
+}
+
+#undef _ctf_integer_ext
+#define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \
+ _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite)
+
+#undef _ctf_array_encoded
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
+ lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \
+ if (_user) { \
+ __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \
+ } else { \
+ __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \
+ }
+
+#undef _ctf_sequence_encoded
+#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
+ _src_length, _encoding, _base, _user, _nowrite) \
{ \
- u32 __tmpl = __dynamic_len[__dynamic_len_idx] \
- + __dynamic_len[__dynamic_len_idx + 1]; \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \
- __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \
+ _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \
+ lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\
+ __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\
} \
- goto __end_field_##dest##_1; \
-__assign_##dest##_2: \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \
- __chan->ops->write_ops(&__ctx, src1, \
- sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\
- goto __end_field_##dest##_2; \
-__assign_##dest##_3: \
- __chan->ops->write_ops(&__ctx, src2, \
- sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\
- goto __end_field_##dest##_3;
-
-#undef tp_memcpy_dyn
-#define tp_memcpy_dyn(dest, src) \
- tp_memcpy_dyn_gen(event_write, dest, src)
-
-#undef tp_memcpy_dyn_2
-#define tp_memcpy_dyn_2(dest, src1, src2) \
- tp_memcpy_dyn_gen_2(event_write, dest, src1, src2)
-
-#undef tp_memcpy_dyn_from_user
-#define tp_memcpy_dyn_from_user(dest, src) \
- tp_memcpy_dyn_gen(event_write_from_user, dest, src)
-
-/*
- * The string length including the final \0.
- */
-#undef tp_copy_string_from_user
-#define tp_copy_string_from_user(dest, src) \
-__assign_##dest: \
- if (0) \
- (void) __typemap.dest; \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \
- __chan->ops->event_strcpy_from_user(&__ctx, src, \
- __get_dynamic_array_len(dest)); \
- goto __end_field_##dest;
-
-#undef tp_strcpy
-#define tp_strcpy(dest, src) \
-__assign_##dest: \
- if (0) \
- (void) __typemap.dest; \
- lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \
- __chan->ops->event_strcpy(&__ctx, src, __get_dynamic_array_len(dest)); \
- goto __end_field_##dest;
-
-/* Named field types must be defined in lttng-types.h */
-
-#undef __get_str
-#define __get_str(field) field
-
-#undef __get_dynamic_array
-#define __get_dynamic_array(field) field
+ lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \
+ if (_user) { \
+ __chan->ops->event_write_from_user(&__ctx, _src, \
+ sizeof(_type) * __get_dynamic_len(dest)); \
+ } else { \
+ __chan->ops->event_write(&__ctx, _src, \
+ sizeof(_type) * __get_dynamic_len(dest)); \
+ }
+
+#undef _ctf_string
+#define _ctf_string(_item, _src, _user, _nowrite) \
+ lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \
+ if (_user) { \
+ __chan->ops->event_strcpy_from_user(&__ctx, _src, \
+ __get_dynamic_len(dest)); \
+ } else { \
+ __chan->ops->event_strcpy(&__ctx, _src, \
+ __get_dynamic_len(dest)); \
+ }
/* Beware: this get len actually consumes the len value */
-#undef __get_dynamic_array_len
-#define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++]
+#undef __get_dynamic_len
+#define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++]
#undef TP_PROTO
-#define TP_PROTO(args...) args
+#define TP_PROTO(...) __VA_ARGS__
#undef TP_ARGS
-#define TP_ARGS(args...) args
+#define TP_ARGS(...) __VA_ARGS__
-#undef TP_STRUCT__entry
-#define TP_STRUCT__entry(args...) args
-
-#undef TP_fast_assign
-#define TP_fast_assign(args...) args
+#undef TP_FIELDS
+#define TP_FIELDS(...) __VA_ARGS__
#undef TP_locvar
#define TP_locvar(...) __VA_ARGS__
#endif /* TP_SESSION_CHECK */
/*
- * __dynamic_len array length is twice the number of fields due to
- * __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2(), which are the
- * worse case, needing 2 entries per field.
+ * Using twice size for filter stack data to hold size and pointer for
+ * each field (worse case). For integers, max size required is 64-bit.
+ * Same for double-precision floats. Those fit within
+ * 2*sizeof(unsigned long) for all supported architectures.
+ * Perform UNION (||) of filter runtime list.
*/
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _fields) \
static void __event_probe__##_name(void *__data, _proto) \
{ \
struct probe_local_vars { _locvar }; \
struct lib_ring_buffer_ctx __ctx; \
size_t __event_len, __event_align; \
size_t __dynamic_len_idx __attribute__((unused)) = 0; \
- size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \
- struct __event_typemap__##_name __typemap __attribute__((unused)); \
+ union { \
+ size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \
+ char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \
+ } __stackvar; \
int __ret; \
struct probe_local_vars __tp_locvar; \
struct probe_local_vars *tp_locvar __attribute__((unused)) = \
if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->pid))) \
return; \
_code \
- __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar, \
- _args); \
+ if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \
+ struct lttng_bytecode_runtime *bc_runtime; \
+ int __filter_record = __event->has_enablers_without_bytecode; \
+ \
+ __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \
+ tp_locvar, _args); \
+ list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \
+ if (unlikely(bc_runtime->filter(bc_runtime, \
+ __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \
+ __filter_record = 1; \
+ } \
+ if (likely(!__filter_record)) \
+ return; \
+ } \
+ __event_len = __event_get_size__##_name(__stackvar.__dynamic_len, \
+ tp_locvar, _args); \
__event_align = __event_get_align__##_name(tp_locvar, _args); \
lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \
__event_align, -1); \
__ret = __chan->ops->event_reserve(&__ctx, __event->id); \
if (__ret < 0) \
return; \
- /* Control code (field ordering) */ \
- _tstruct \
+ _fields \
__chan->ops->event_commit(&__ctx); \
- return; \
- /* Copy code, steered by control code */ \
- _assign \
}
#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS
-#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
+#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _fields) \
static void __event_probe__##_name(void *__data) \
{ \
struct probe_local_vars { _locvar }; \
struct lib_ring_buffer_ctx __ctx; \
size_t __event_len, __event_align; \
size_t __dynamic_len_idx __attribute__((unused)) = 0; \
- size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \
- struct __event_typemap__##_name __typemap __attribute__((unused)); \
+ union { \
+ size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \
+ char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \
+ } __stackvar; \
int __ret; \
struct probe_local_vars __tp_locvar; \
struct probe_local_vars *tp_locvar __attribute__((unused)) = \
if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->pid))) \
return; \
_code \
- __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar); \
+ if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \
+ struct lttng_bytecode_runtime *bc_runtime; \
+ int __filter_record = __event->has_enablers_without_bytecode; \
+ \
+ __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \
+ tp_locvar); \
+ list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \
+ if (unlikely(bc_runtime->filter(bc_runtime, \
+ __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \
+ __filter_record = 1; \
+ } \
+ if (likely(!__filter_record)) \
+ return; \
+ } \
+ __event_len = __event_get_size__##_name(__stackvar.__dynamic_len, tp_locvar); \
__event_align = __event_get_align__##_name(tp_locvar); \
lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \
__event_align, -1); \
__ret = __chan->ops->event_reserve(&__ctx, __event->id); \
if (__ret < 0) \
return; \
- /* Control code (field ordering) */ \
- _tstruct \
+ _fields \
__chan->ops->event_commit(&__ctx); \
- return; \
- /* Copy code, steered by control code */ \
- _assign \
}
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+#undef __get_dynamic_len
+
+/*
+ * Stage 7 of the trace events.
+ *
+ * Create event descriptions.
+ */
+
+/* Named field types must be defined in lttng-types.h */
+
+#include "lttng-events-reset.h" /* Reset all macros within LTTNG_TRACEPOINT_EVENT */
+
+#ifndef TP_PROBE_CB
+#define TP_PROBE_CB(_template) &__event_probe__##_template
+#endif
+
+#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS
+#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \
+static const struct lttng_event_desc __event_desc___##_map = { \
+ .fields = __event_fields___##_template, \
+ .name = #_map, \
+ .kname = #_name, \
+ .probe_callback = (void *) TP_PROBE_CB(_template), \
+ .nr_fields = ARRAY_SIZE(__event_fields___##_template), \
+ .owner = THIS_MODULE, \
+};
+
+#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP
+#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \
+ LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map)
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+/*
+ * Stage 8 of the trace events.
+ *
+ * Create an array of event description pointers.
+ */
+
+#include "lttng-events-reset.h" /* Reset all macros within LTTNG_TRACEPOINT_EVENT */
+
+#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS
+#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \
+ &__event_desc___##_map,
+
+#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP
+#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \
+ LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map)
+
+#define TP_ID1(_token, _system) _token##_system
+#define TP_ID(_token, _system) TP_ID1(_token, _system)
+
+static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = {
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+};
+
+#undef TP_ID1
+#undef TP_ID
+
+/*
+ * Stage 9 of the trace events.
+ *
+ * Create a toplevel descriptor for the whole probe.
+ */
+
+#define TP_ID1(_token, _system) _token##_system
+#define TP_ID(_token, _system) TP_ID1(_token, _system)
+
+/* non-const because list head will be modified when registered. */
+static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
+ .provider = __stringify(TRACE_SYSTEM),
+ .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM),
+ .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)),
+ .head = { NULL, NULL },
+ .lazy_init_head = { NULL, NULL },
+ .lazy = 0,
+};
+
+#undef TP_ID1
+#undef TP_ID
+
/*
* Stage 10 of the trace events.
*
* Register/unregister probes at module load/unload.
*/
-#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
+#include "lttng-events-reset.h" /* Reset all macros within LTTNG_TRACEPOINT_EVENT */
#define TP_ID1(_token, _system) _token##_system
#define TP_ID(_token, _system) TP_ID1(_token, _system)
projects / lttng-modules.git / blobdiff