#define TP_ID1(_token, _system) _token##_system
#define TP_ID(_token, _system) TP_ID1(_token, _system)
-#define module_init_eval1(_token, _system) module_init(_token##_system)
-#define module_init_eval(_token, _system) module_init_eval1(_token, _system)
-#define module_exit_eval1(_token, _system) module_exit(_token##_system)
-#define module_exit_eval(_token, _system) module_exit_eval1(_token, _system)
static void *TP_ID(__lttng_seq_start__, TRACE_SYSTEM)(struct seq_file *m,
loff_t *pos)
return ret;
}
-module_init_eval(__lttng_types_init__, TRACE_SYSTEM);
-
static void TP_ID(__lttng_types_exit__, TRACE_SYSTEM)(void)
{
debugfs_remove(TP_ID(__lttng_types_dentry__, TRACE_SYSTEM));
}
-module_exit_eval(__lttng_types_exit__, TRACE_SYSTEM);
-
-#undef module_init_eval
-#undef module_exit_eval
#undef TP_ID1
#undef TP_ID
/* Named field types must be defined in lttng-types.h */
#undef __field
-#define __field(_type, _item) \
- __event_len += lib_ring_buffer_align(__event_len, sizeof(_type)); \
+#define __field(_type, _item) \
+ __event_len += lib_ring_buffer_align(__event_len, __alignof__(_type)); \
__event_len += sizeof(_type);
#undef __field_ext
#define __field_ext(_type, _item, _filter_type) __field(_type, _item)
#undef __array
-#define __array(_type, _item, _length) \
- __event_len += lib_ring_buffer_align(__event_len, sizeof(_type)); \
+#define __array(_type, _item, _length) \
+ __event_len += lib_ring_buffer_align(__event_len, __alignof__(_type)); \
__event_len += sizeof(_type) * (_length);
#undef __dynamic_array
-#define __dynamic_array(_type, _item, _length) \
- __event_len += lib_ring_buffer_align(__event_len, sizeof(u32)); \
- __event_len += sizeof(u32); \
- __event_len += lib_ring_buffer_align(__event_len, sizeof(_type)); \
+#define __dynamic_array(_type, _item, _length) \
+ __event_len += lib_ring_buffer_align(__event_len, __alignof__(u32)); \
+ __event_len += sizeof(u32); \
+ __event_len += lib_ring_buffer_align(__event_len, __alignof__(_type)); \
__event_len += sizeof(_type) * (_length);
#undef __string
-#define __string(_item, _src) \
+#define __string(_item, _src) \
__event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1;
#undef TP_PROTO
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
/*
* Stage 6 of the trace events.
*
+ * Create structure declaration that allows the "assign" macros to access the
+ * field types.
+ */
+
+#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
+
+/* Named field types must be defined in lttng-types.h */
+
+#undef __field
+#define __field(_type, _item) _type _item;
+
+#undef __field_ext
+#define __field_ext(_type, _item, _filter_type) __field(_type, _item)
+
+#undef __array
+#define __array(_type, _item, _length) _type _item;
+
+#undef __dynamic_array
+#define __dynamic_array(_type, _item, _length) _type _item;
+
+#undef __string
+#define __string(_item, _src) char _item;
+
+#undef TP_STRUCT__entry
+#define TP_STRUCT__entry(args...) args
+
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
+struct __event_typemap__##_name { \
+ _tstruct \
+};
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+
+/*
+ * Stage 7 of the trace events.
+ *
* Create the probe function : call even size calculation and write event data
* into the buffer.
*
#undef __field
#define __field(_type, _item) \
- lib_ring_buffer_align_ctx(&ctx, sizeof(_type)); \
goto __assign_##_item; \
__end_field_##_item:
#undef __array
#define __array(_type, _item, _length) \
- lib_ring_buffer_align_ctx(&ctx, sizeof(_type)); \
goto __assign_##_item; \
__end_field_##_item:
#undef __dynamic_array
#define __dynamic_array(_type, _item, _length) \
- lib_ring_buffer_align_ctx(&ctx, sizeof(u32)); \
goto __assign_##_item##_1; \
__end_field_##_item##_1: \
- lib_ring_buffer_align_ctx(&ctx, sizeof(_type)); \
goto __assign_##_item##_2; \
__end_field_##_item##_2:
#define tp_assign(dest, src) \
__assign_##dest: \
{ \
- __typeof__(src) __tmp = (src); \
- __chan->ops->event_write(&ctx, &__tmp, sizeof(src)); \
+ __typeof__(__typemap.dest) __tmp = (src); \
+ lib_ring_buffer_align_ctx(&ctx, __alignof__(__tmp)); \
+ __chan->ops->event_write(&ctx, &__tmp, sizeof(__tmp)); \
} \
goto __end_field_##dest;
#undef tp_memcpy
#define tp_memcpy(dest, src, len) \
__assign_##dest: \
+ lib_ring_buffer_align_ctx(&ctx, __alignof__(__typemap.dest)); \
__chan->ops->event_write(&ctx, src, len); \
goto __end_field_##dest;
#define tp_memcpy_dyn(dest, src, len) \
__assign_##dest##_1: \
{ \
- __typeof__(len) __tmpl = (len); \
+ u32 __tmpl = (len); \
+ lib_ring_buffer_align_ctx(&ctx, __alignof__(u32)); \
__chan->ops->event_write(&ctx, &__tmpl, sizeof(u32)); \
} \
goto __end_field_##dest##_1; \
__assign_##dest##_2: \
+ lib_ring_buffer_align_ctx(&ctx, __alignof__(__typemap.dest)); \
__chan->ops->event_write(&ctx, src, len); \
goto __end_field_##dest##_2;
#undef tp_strcpy
#define tp_strcpy(dest, src) \
- tp_memcpy(dest, src, __get_dynamic_array_len(dest)); \
+ tp_memcpy(dest, src, __get_dynamic_array_len(dest))
/* Named field types must be defined in lttng-types.h */
size_t __event_len, __event_align; \
size_t __dynamic_len_idx = 0; \
size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \
+ struct __event_typemap__##_name __typemap; \
int __ret; \
\
if (0) \
(void) __dynamic_len_idx; /* don't warn if unused */ \
+ if (!ACCESS_ONCE(__chan->session->active)) \
+ return; \
__event_len = __event_get_size__##_name(__dynamic_len, _args); \
__event_align = __event_get_align__##_name(_args); \
lib_ring_buffer_ctx_init(&ctx, __chan->chan, NULL, __event_len, \
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#if 0
-
-#include <linux/ftrace_event.h>
-
/*
- * DECLARE_EVENT_CLASS can be used to add a generic function
- * handlers for events. That is, if all events have the same
- * parameters and just have distinct trace points.
- * Each tracepoint can be defined with DEFINE_EVENT and that
- * will map the DECLARE_EVENT_CLASS to the tracepoint.
+ * Stage 8 of the trace events.
*
- * TRACE_EVENT is a one to one mapping between tracepoint and template.
+ * Register/unregister probes at module load/unload.
*/
-#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));
-
-
-#undef __field
-#define __field(type, item) type item;
-
-#undef __field_ext
-#define __field_ext(type, item, filter_type) type item;
-
-#undef __array
-#define __array(type, item, len) type item[len];
-
-#undef __dynamic_array
-#define __dynamic_array(type, item, len) u32 __data_loc_##item;
-
-#undef __string
-#define __string(item, src) __dynamic_array(char, item, -1)
-
-#undef TP_STRUCT__entry
-#define TP_STRUCT__entry(args...) args
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
- struct ftrace_raw_##name { \
- struct trace_entry ent; \
- tstruct \
- char __data[0]; \
- }; \
- \
- static struct ftrace_event_class event_class_##name;
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, name, proto, args) \
- static struct ftrace_event_call __used \
- __attribute__((__aligned__(4))) event_##name
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
- DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
-
-/* Callbacks are meaningless to ftrace. */
-#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)) \
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-
-/*
- * Stage 2 of the trace events.
- *
- * Create static inline function that calculates event size.
- */
-
-#undef __field
-#define __field(type, item)
-
-#undef __field_ext
-#define __field_ext(type, item, filter_type)
-
-#undef __array
-#define __array(type, item, len)
-
-#undef __dynamic_array
-#define __dynamic_array(type, item, len) u32 item;
-
-#undef __string
-#define __string(item, src) __dynamic_array(char, item, -1)
+#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
- struct ftrace_data_offsets_##call { \
- tstruct; \
- };
+#define TP_ID1(_token, _system) _token##_system
+#define TP_ID(_token, _system) TP_ID1(_token, _system)
+#define module_init_eval1(_token, _system) module_init(_token##_system)
+#define module_init_eval(_token, _system) module_init_eval1(_token, _system)
+#define module_exit_eval1(_token, _system) module_exit(_token##_system)
+#define module_exit_eval(_token, _system) module_exit_eval1(_token, _system)
#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, name, proto, args)
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
- DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-/*
- * Stage 3 of the trace events.
- *
- * Create the probe function : call even size calculation and write event data
- * into the buffer.
- */
-
-#undef __entry
-#define __entry field
-
-#undef TP_printk
-#define TP_printk(fmt, args...) fmt "\n", args
-
-#undef __get_dynamic_array
-#define __get_dynamic_array(field) \
- ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
-
-#undef __get_str
-#define __get_str(field) (char *)__get_dynamic_array(field)
-
-#undef __print_flags
-#define __print_flags(flag, delim, flag_array...) \
- ({ \
- static const struct trace_print_flags __flags[] = \
- { flag_array, { -1, NULL }}; \
- ftrace_print_flags_seq(p, delim, flag, __flags); \
- })
-
-#undef __print_symbolic
-#define __print_symbolic(value, symbol_array...) \
- ({ \
- static const struct trace_print_flags symbols[] = \
- { symbol_array, { -1, NULL }}; \
- ftrace_print_symbols_seq(p, value, symbols); \
- })
-
-#undef __print_hex
-#define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len)
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
-static notrace enum print_line_t \
-ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \
- struct trace_event *trace_event) \
-{ \
- struct ftrace_event_call *event; \
- struct trace_seq *s = &iter->seq; \
- struct ftrace_raw_##call *field; \
- struct trace_entry *entry; \
- struct trace_seq *p = &iter->tmp_seq; \
- int ret; \
- \
- event = container_of(trace_event, struct ftrace_event_call, \
- event); \
- \
- entry = iter->ent; \
- \
- if (entry->type != event->event.type) { \
- WARN_ON_ONCE(1); \
- return TRACE_TYPE_UNHANDLED; \
- } \
- \
- field = (typeof(field))entry; \
- \
- trace_seq_init(p); \
- ret = trace_seq_printf(s, "%s: ", event->name); \
- if (ret) \
- ret = trace_seq_printf(s, print); \
- if (!ret) \
- return TRACE_TYPE_PARTIAL_LINE; \
- \
- return TRACE_TYPE_HANDLED; \
-} \
-static struct trace_event_functions ftrace_event_type_funcs_##call = { \
- .trace = ftrace_raw_output_##call, \
-};
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
-static notrace enum print_line_t \
-ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \
- struct trace_event *event) \
-{ \
- struct trace_seq *s = &iter->seq; \
- struct ftrace_raw_##template *field; \
- struct trace_entry *entry; \
- struct trace_seq *p = &iter->tmp_seq; \
- int ret; \
- \
- entry = iter->ent; \
- \
- if (entry->type != event_##call.event.type) { \
- WARN_ON_ONCE(1); \
- return TRACE_TYPE_UNHANDLED; \
- } \
- \
- field = (typeof(field))entry; \
- \
- trace_seq_init(p); \
- ret = trace_seq_printf(s, "%s: ", #call); \
- if (ret) \
- ret = trace_seq_printf(s, print); \
- if (!ret) \
- return TRACE_TYPE_PARTIAL_LINE; \
- \
- return TRACE_TYPE_HANDLED; \
-} \
-static struct trace_event_functions ftrace_event_type_funcs_##call = { \
- .trace = ftrace_raw_output_##call, \
-};
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-#undef __field_ext
-#define __field_ext(type, item, filter_type) \
- ret = trace_define_field(event_call, #type, #item, \
- offsetof(typeof(field), item), \
- sizeof(field.item), \
- is_signed_type(type), filter_type); \
- if (ret) \
- return ret;
+#define DEFINE_EVENT(_template, _name, _proto, _args) \
+ ret = ltt_probe_register(#_name, (void *) __event_probe__##_template); \
+ WARN_ON_ONCE(ret);
-#undef __field
-#define __field(type, item) __field_ext(type, item, FILTER_OTHER)
+static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void)
+{
+ int ret = 0;
-#undef __array
-#define __array(type, item, len) \
- BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
- ret = trace_define_field(event_call, #type "[" #len "]", #item, \
- offsetof(typeof(field), item), \
- sizeof(field.item), \
- is_signed_type(type), FILTER_OTHER); \
- if (ret) \
+ ret = TP_ID(__lttng_types_init__, TRACE_SYSTEM)();
+ if (ret)
return ret;
-
-#undef __dynamic_array
-#define __dynamic_array(type, item, len) \
- ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
- offsetof(typeof(field), __data_loc_##item), \
- sizeof(field.__data_loc_##item), \
- is_signed_type(type), FILTER_OTHER);
-
-#undef __string
-#define __string(item, src) __dynamic_array(char, item, -1)
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
-static int notrace \
-ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
-{ \
- struct ftrace_raw_##call field; \
- int ret; \
- \
- tstruct; \
- \
- return ret; \
-}
-
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, name, proto, args)
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
- DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-/*
- * remember the offset of each array from the beginning of the event.
- */
-
-#undef __entry
-#define __entry entry
-
-#undef __field
-#define __field(type, item)
-
-#undef __field_ext
-#define __field_ext(type, item, filter_type)
-
-#undef __array
-#define __array(type, item, len)
-
-#undef __dynamic_array
-#define __dynamic_array(type, item, len) \
- __data_offsets->item = __data_size + \
- offsetof(typeof(*entry), __data); \
- __data_offsets->item |= (len * sizeof(type)) << 16; \
- __data_size += (len) * sizeof(type);
-
-#undef __string
-#define __string(item, src) __dynamic_array(char, item, strlen(src) + 1)
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
-static inline notrace int ftrace_get_offsets_##call( \
- struct ftrace_data_offsets_##call *__data_offsets, proto) \
-{ \
- int __data_size = 0; \
- struct ftrace_raw_##call __maybe_unused *entry; \
- \
- tstruct; \
- \
- return __data_size; \
-}
-
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, name, proto, args)
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
- DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
-
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-/*
- * Stage 4 of the trace events.
- *
- * Override the macros in <trace/trace_events.h> to include the following:
- *
- * For those macros defined with TRACE_EVENT:
- *
- * static struct ftrace_event_call event_<call>;
- *
- * static void ftrace_raw_event_<call>(void *__data, proto)
- * {
- * struct ftrace_event_call *event_call = __data;
- * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
- * struct ring_buffer_event *event;
- * struct ftrace_raw_<call> *entry; <-- defined in stage 1
- * struct ring_buffer *buffer;
- * unsigned long irq_flags;
- * int __data_size;
- * int pc;
- *
- * local_save_flags(irq_flags);
- * pc = preempt_count();
- *
- * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
- *
- * event = trace_current_buffer_lock_reserve(&buffer,
- * event_<call>->event.type,
- * sizeof(*entry) + __data_size,
- * irq_flags, pc);
- * if (!event)
- * return;
- * entry = ring_buffer_event_data(event);
- *
- * { <assign>; } <-- Here we assign the entries by the __field and
- * __array macros.
- *
- * if (!filter_current_check_discard(buffer, event_call, entry, event))
- * trace_current_buffer_unlock_commit(buffer,
- * event, irq_flags, pc);
- * }
- *
- * static struct trace_event ftrace_event_type_<call> = {
- * .trace = ftrace_raw_output_<call>, <-- stage 2
- * };
- *
- * static const char print_fmt_<call>[] = <TP_printk>;
- *
- * static struct ftrace_event_class __used event_class_<template> = {
- * .system = "<system>",
- * .define_fields = ftrace_define_fields_<call>,
- * .fields = LIST_HEAD_INIT(event_class_##call.fields),
- * .raw_init = trace_event_raw_init,
- * .probe = ftrace_raw_event_##call,
- * .reg = ftrace_event_reg,
- * };
- *
- * static struct ftrace_event_call __used
- * __attribute__((__aligned__(4)))
- * __attribute__((section("_ftrace_events"))) event_<call> = {
- * .name = "<call>",
- * .class = event_class_<template>,
- * .event = &ftrace_event_type_<call>,
- * .print_fmt = print_fmt_<call>,
- * };
- *
- */
-
-#ifdef CONFIG_PERF_EVENTS
-
-#define _TRACE_PERF_PROTO(call, proto) \
- static notrace void \
- perf_trace_##call(void *__data, proto);
-
-#define _TRACE_PERF_INIT(call) \
- .perf_probe = perf_trace_##call,
-
-#else
-#define _TRACE_PERF_PROTO(call, proto)
-#define _TRACE_PERF_INIT(call)
-#endif /* CONFIG_PERF_EVENTS */
-
-#undef __entry
-#define __entry entry
-
-#undef __field
-#define __field(type, item)
-
-#undef __array
-#define __array(type, item, len)
-
-#undef __dynamic_array
-#define __dynamic_array(type, item, len) \
- __entry->__data_loc_##item = __data_offsets.item;
-
-#undef __string
-#define __string(item, src) __dynamic_array(char, item, -1) \
-
-#undef __assign_str
-#define __assign_str(dst, src) \
- strcpy(__get_str(dst), src);
-
-#undef TP_fast_assign
-#define TP_fast_assign(args...) args
-
-#undef TP_perf_assign
-#define TP_perf_assign(args...)
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
- \
-static notrace void \
-ftrace_raw_event_##call(void *__data, proto) \
-{ \
- struct ftrace_event_call *event_call = __data; \
- struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
- struct ring_buffer_event *event; \
- struct ftrace_raw_##call *entry; \
- struct ring_buffer *buffer; \
- unsigned long irq_flags; \
- int __data_size; \
- int pc; \
- \
- local_save_flags(irq_flags); \
- pc = preempt_count(); \
- \
- __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
- \
- event = trace_current_buffer_lock_reserve(&buffer, \
- event_call->event.type, \
- sizeof(*entry) + __data_size, \
- irq_flags, pc); \
- if (!event) \
- return; \
- entry = ring_buffer_event_data(event); \
- \
- tstruct \
- \
- { assign; } \
- \
- if (!filter_current_check_discard(buffer, event_call, entry, event)) \
- trace_nowake_buffer_unlock_commit(buffer, \
- event, irq_flags, pc); \
-}
-/*
- * The ftrace_test_probe is compiled out, it is only here as a build time check
- * to make sure that if the tracepoint handling changes, the ftrace probe will
- * fail to compile unless it too is updated.
- */
-
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, call, proto, args) \
-static inline void ftrace_test_probe_##call(void) \
-{ \
- check_trace_callback_type_##call(ftrace_raw_event_##template); \
+ return ret;
}
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-#undef __entry
-#define __entry REC
-
-#undef __print_flags
-#undef __print_symbolic
-#undef __get_dynamic_array
-#undef __get_str
-
-#undef TP_printk
-#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
-_TRACE_PERF_PROTO(call, PARAMS(proto)); \
-static const char print_fmt_##call[] = print; \
-static struct ftrace_event_class __used event_class_##call = { \
- .system = __stringify(TRACE_SYSTEM), \
- .define_fields = ftrace_define_fields_##call, \
- .fields = LIST_HEAD_INIT(event_class_##call.fields),\
- .raw_init = trace_event_raw_init, \
- .probe = ftrace_raw_event_##call, \
- .reg = ftrace_event_reg, \
- _TRACE_PERF_INIT(call) \
-};
+module_init_eval(__lttng_events_init__, TRACE_SYSTEM);
#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, call, proto, args) \
- \
-static struct ftrace_event_call __used \
-__attribute__((__aligned__(4))) \
-__attribute__((section("_ftrace_events"))) event_##call = { \
- .name = #call, \
- .class = &event_class_##template, \
- .event.funcs = &ftrace_event_type_funcs_##template, \
- .print_fmt = print_fmt_##template, \
-};
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
- \
-static const char print_fmt_##call[] = print; \
- \
-static struct ftrace_event_call __used \
-__attribute__((__aligned__(4))) \
-__attribute__((section("_ftrace_events"))) event_##call = { \
- .name = #call, \
- .class = &event_class_##template, \
- .event.funcs = &ftrace_event_type_funcs_##call, \
- .print_fmt = print_fmt_##call, \
-}
+#define DEFINE_EVENT(_template, _name, _proto, _args) \
+ ltt_probe_unregister(#_name);
+static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void)
+{
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-/*
- * Define the insertion callback to perf events
- *
- * The job is very similar to ftrace_raw_event_<call> except that we don't
- * insert in the ring buffer but in a perf counter.
- *
- * static void ftrace_perf_<call>(proto)
- * {
- * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
- * struct ftrace_event_call *event_call = &event_<call>;
- * extern void perf_tp_event(int, u64, u64, void *, int);
- * struct ftrace_raw_##call *entry;
- * struct perf_trace_buf *trace_buf;
- * u64 __addr = 0, __count = 1;
- * unsigned long irq_flags;
- * struct trace_entry *ent;
- * int __entry_size;
- * int __data_size;
- * int __cpu
- * int pc;
- *
- * pc = preempt_count();
- *
- * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
- *
- * // Below we want to get the aligned size by taking into account
- * // the u32 field that will later store the buffer size
- * __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),
- * sizeof(u64));
- * __entry_size -= sizeof(u32);
- *
- * // Protect the non nmi buffer
- * // This also protects the rcu read side
- * local_irq_save(irq_flags);
- * __cpu = smp_processor_id();
- *
- * if (in_nmi())
- * trace_buf = rcu_dereference_sched(perf_trace_buf_nmi);
- * else
- * trace_buf = rcu_dereference_sched(perf_trace_buf);
- *
- * if (!trace_buf)
- * goto end;
- *
- * trace_buf = per_cpu_ptr(trace_buf, __cpu);
- *
- * // Avoid recursion from perf that could mess up the buffer
- * if (trace_buf->recursion++)
- * goto end_recursion;
- *
- * raw_data = trace_buf->buf;
- *
- * // Make recursion update visible before entering perf_tp_event
- * // so that we protect from perf recursions.
- *
- * barrier();
- *
- * //zero dead bytes from alignment to avoid stack leak to userspace:
- * *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL;
- * entry = (struct ftrace_raw_<call> *)raw_data;
- * ent = &entry->ent;
- * tracing_generic_entry_update(ent, irq_flags, pc);
- * ent->type = event_call->id;
- *
- * <tstruct> <- do some jobs with dynamic arrays
- *
- * <assign> <- affect our values
- *
- * perf_tp_event(event_call->id, __addr, __count, entry,
- * __entry_size); <- submit them to perf counter
- *
- * }
- */
-
-#ifdef CONFIG_PERF_EVENTS
-
-#undef __entry
-#define __entry entry
-
-#undef __get_dynamic_array
-#define __get_dynamic_array(field) \
- ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
-
-#undef __get_str
-#define __get_str(field) (char *)__get_dynamic_array(field)
-
-#undef __perf_addr
-#define __perf_addr(a) __addr = (a)
-
-#undef __perf_count
-#define __perf_count(c) __count = (c)
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
-static notrace void \
-perf_trace_##call(void *__data, proto) \
-{ \
- struct ftrace_event_call *event_call = __data; \
- struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
- struct ftrace_raw_##call *entry; \
- struct pt_regs __regs; \
- u64 __addr = 0, __count = 1; \
- struct hlist_head *head; \
- int __entry_size; \
- int __data_size; \
- int rctx; \
- \
- perf_fetch_caller_regs(&__regs); \
- \
- __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
- __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
- sizeof(u64)); \
- __entry_size -= sizeof(u32); \
- \
- if (WARN_ONCE(__entry_size > PERF_MAX_TRACE_SIZE, \
- "profile buffer not large enough")) \
- return; \
- \
- entry = (struct ftrace_raw_##call *)perf_trace_buf_prepare( \
- __entry_size, event_call->event.type, &__regs, &rctx); \
- if (!entry) \
- return; \
- \
- tstruct \
- \
- { assign; } \
- \
- head = this_cpu_ptr(event_call->perf_events); \
- perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \
- __count, &__regs, head); \
+ TP_ID(__lttng_types_exit__, TRACE_SYSTEM)();
}
-/*
- * This part is compiled out, it is only here as a build time check
- * to make sure that if the tracepoint handling changes, the
- * perf probe will fail to compile unless it too is updated.
- */
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, call, proto, args) \
-static inline void perf_test_probe_##call(void) \
-{ \
- check_trace_callback_type_##call(perf_trace_##template); \
-}
-
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
- DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#endif /* CONFIG_PERF_EVENTS */
+module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM);
-#undef _TRACE_PROFILE_INIT
-#endif //0
+#undef module_init_eval
+#undef module_exit_eval
+#undef TP_ID1
+#undef TP_ID