#include <linux/debugfs.h>
#include "lttng.h"
#include "lttng-types.h"
+#include "lttng-probe-user.h"
#include "../wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */
#include "../wrapper/ringbuffer/frontend_types.h"
#include "../lttng-events.h"
* Macro declarations used for all stages.
*/
+/*
+ * LTTng name mapping macros. LTTng remaps some of the kernel events to
+ * enforce name-spacing.
+ */
+#undef TRACE_EVENT_MAP
+#define TRACE_EVENT_MAP(name, map, proto, args, tstruct, assign, print) \
+ DECLARE_EVENT_CLASS(map, \
+ PARAMS(proto), \
+ PARAMS(args), \
+ PARAMS(tstruct), \
+ PARAMS(assign), \
+ PARAMS(print)) \
+ DEFINE_EVENT_MAP(map, name, map, PARAMS(proto), PARAMS(args))
+
+#undef TRACE_EVENT_MAP_NOARGS
+#define TRACE_EVENT_MAP_NOARGS(name, map, tstruct, assign, print) \
+ DECLARE_EVENT_CLASS_NOARGS(map, \
+ PARAMS(tstruct), \
+ PARAMS(assign), \
+ PARAMS(print)) \
+ DEFINE_EVENT_MAP_NOARGS(map, name, map)
+
+#undef DEFINE_EVENT_PRINT_MAP
+#define DEFINE_EVENT_PRINT_MAP(template, name, map, proto, args, print) \
+ DEFINE_EVENT_MAP(template, name, map, PARAMS(proto), PARAMS(args))
+
+/* Callbacks are meaningless to LTTng. */
+#undef TRACE_EVENT_FN_MAP
+#define TRACE_EVENT_FN_MAP(name, map, proto, args, tstruct, \
+ assign, print, reg, unreg) \
+ TRACE_EVENT_MAP(name, map, PARAMS(proto), PARAMS(args), \
+ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
+
+#undef TRACE_EVENT_CONDITION_MAP
+#define TRACE_EVENT_CONDITION_MAP(name, map, proto, args, cond, tstruct, assign, print) \
+ TRACE_EVENT_MAP(name, map, \
+ PARAMS(proto), \
+ PARAMS(args), \
+ PARAMS(tstruct), \
+ PARAMS(assign), \
+ PARAMS(print))
+
/*
* DECLARE_EVENT_CLASS can be used to add a generic function
* handlers for events. That is, if all events have the same
*/
#undef TRACE_EVENT
-#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
- DECLARE_EVENT_CLASS(name, \
- PARAMS(proto), \
- PARAMS(args), \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print)) \
- DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args))
+#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
+ TRACE_EVENT_MAP(name, name, \
+ PARAMS(proto), \
+ PARAMS(args), \
+ PARAMS(tstruct), \
+ PARAMS(assign), \
+ PARAMS(print))
#undef TRACE_EVENT_NOARGS
-#define TRACE_EVENT_NOARGS(name, tstruct, assign, print) \
- DECLARE_EVENT_CLASS_NOARGS(name, \
- PARAMS(tstruct), \
- PARAMS(assign), \
- PARAMS(print)) \
- DEFINE_EVENT_NOARGS(name, name)
-
+#define TRACE_EVENT_NOARGS(name, tstruct, assign, print) \
+ TRACE_EVENT_MAP_NOARGS(name, name, \
+ PARAMS(tstruct), \
+ PARAMS(assign), \
+ PARAMS(print))
#undef DEFINE_EVENT_PRINT
#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
- DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+ DEFINE_EVENT_PRINT_MAP(template, name, name, \
+ PARAMS(proto), PARAMS(args), PARAMS(print_))
-/* Callbacks are meaningless to LTTng. */
#undef TRACE_EVENT_FN
#define TRACE_EVENT_FN(name, proto, args, tstruct, \
assign, print, reg, unreg) \
- TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \
- PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
+ TRACE_EVENT_FN_MAP(name, name, PARAMS(proto), PARAMS(args), \
+ PARAMS(tstruct), PARAMS(assign), PARAMS(print), \
+ PARAMS(reg), PARAMS(unreg)) \
+
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(template, name, proto, args) \
+ DEFINE_EVENT_MAP(template, name, name, PARAMS(proto), PARAMS(args))
+
+#undef DEFINE_EVENT_NOARGS
+#define DEFINE_EVENT_NOARGS(template, name) \
+ DEFINE_EVENT_MAP_NOARGS(template, name, name)
+
+#undef TRACE_EVENT_CONDITION
+#define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
+ TRACE_EVENT_CONDITION_MAP(name, name, \
+ PARAMS(proto), \
+ PARAMS(args), \
+ PARAMS(cond), \
+ PARAMS(tstruct), \
+ PARAMS(assign), \
+ PARAMS(print))
/*
* Stage 1 of the trace events.
#undef TP_ARGS
#define TP_ARGS(args...) args
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(_template, _name, _proto, _args) \
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \
void trace_##_name(_proto);
-#undef DEFINE_EVENT_NOARGS
-#define DEFINE_EVENT_NOARGS(_template, _name) \
+#undef DEFINE_EVENT_MAP_NOARGS
+#define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \
void trace_##_name(void *__data);
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
}, \
},
+#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)
#define __dynamic_array_hex(_type, _item, _length) \
__dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, 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) \
{ \
#define TP_PROBE_CB(_template) &__event_probe__##_template
#endif
-#undef DEFINE_EVENT_NOARGS
-#define DEFINE_EVENT_NOARGS(_template, _name) \
-static const struct lttng_event_desc __event_desc___##_name = { \
+#undef DEFINE_EVENT_MAP_NOARGS
+#define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \
+static const struct lttng_event_desc __event_desc___##_map = { \
.fields = __event_fields___##_template, \
- .name = #_name, \
+ .name = #_map, \
.probe_callback = (void *) TP_PROBE_CB(_template), \
.nr_fields = ARRAY_SIZE(__event_fields___##_template), \
.owner = THIS_MODULE, \
};
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(_template, _name, _proto, _args) \
- DEFINE_EVENT_NOARGS(_template, _name)
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \
+ DEFINE_EVENT_MAP_NOARGS(_template, _name, _map)
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
-#undef DEFINE_EVENT_NOARGS
-#define DEFINE_EVENT_NOARGS(_template, _name) \
- &__event_desc___##_name,
+#undef DEFINE_EVENT_MAP_NOARGS
+#define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \
+ &__event_desc___##_map,
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(_template, _name, _proto, _args) \
- DEFINE_EVENT_NOARGS(_template, _name)
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \
+ DEFINE_EVENT_MAP_NOARGS(_template, _name, _map)
#define TP_ID1(_token, _system) _token##_system
#define TP_ID(_token, _system) TP_ID1(_token, _system)
__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;
#undef __string_from_user
#define __string_from_user(_item, _src) \
__event_len += __dynamic_len[__dynamic_len_idx++] = \
- max_t(size_t, strlen_user(_src), 1);
+ max_t(size_t, lttng_strlen_user_inatomic(_src), 1);
#undef TP_PROTO
#define TP_PROTO(args...) args
__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)
#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
_type _item;
+#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) char _item;
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; \
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: \
+ { \
+ 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)); \
+ } \
+ 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)
#define _TP_SESSION_CHECK(session, csession) 1
#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.
+ */
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
static void __event_probe__##_name(void *__data, _proto) \
struct lib_ring_buffer_ctx __ctx; \
size_t __event_len, __event_align; \
size_t __dynamic_len_idx = 0; \
- size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \
+ size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)]; \
struct __event_typemap__##_name __typemap; \
int __ret; \
\
projects / lttng-modules.git / blobdiff