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Diffstat (limited to 'kernel/trace/trace_export.c')
-rw-r--r--kernel/trace/trace_export.c227
1 files changed, 161 insertions, 66 deletions
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 07a22c33ebf..d4ddde28a81 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -15,88 +15,183 @@
#include "trace_output.h"
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM ftrace
-#undef TRACE_STRUCT
-#define TRACE_STRUCT(args...) args
-
-#undef TRACE_FIELD
-#define TRACE_FIELD(type, item, assign) \
- ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
- "offset:%u;\tsize:%u;\n", \
- (unsigned int)offsetof(typeof(field), item), \
- (unsigned int)sizeof(field.item)); \
- if (!ret) \
- return 0;
-
-
-#undef TRACE_FIELD_SPECIAL
-#define TRACE_FIELD_SPECIAL(type_item, item, cmd) \
- ret = trace_seq_printf(s, "\tfield special:" #type_item ";\t" \
- "offset:%u;\tsize:%u;\n", \
- (unsigned int)offsetof(typeof(field), item), \
- (unsigned int)sizeof(field.item)); \
- if (!ret) \
- return 0;
-
-#undef TRACE_FIELD_ZERO_CHAR
-#define TRACE_FIELD_ZERO_CHAR(item) \
- ret = trace_seq_printf(s, "\tfield:char " #item ";\t" \
- "offset:%u;\tsize:0;\n", \
- (unsigned int)offsetof(typeof(field), item)); \
- if (!ret) \
- return 0;
-
-
-#undef TP_RAW_FMT
-#define TP_RAW_FMT(args...) args
-
-#undef TRACE_EVENT_FORMAT
-#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
-static int \
-ftrace_format_##call(struct trace_seq *s) \
+/*
+ * The FTRACE_ENTRY_REG macro allows ftrace entry to define register
+ * function and thus become accesible via perf.
+ */
+#undef FTRACE_ENTRY_REG
+#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, \
+ filter, regfn) \
+ FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
+ filter)
+
+/* not needed for this file */
+#undef __field_struct
+#define __field_struct(type, item)
+
+#undef __field
+#define __field(type, item) type item;
+
+#undef __field_desc
+#define __field_desc(type, container, item) type item;
+
+#undef __array
+#define __array(type, item, size) type item[size];
+
+#undef __array_desc
+#define __array_desc(type, container, item, size) type item[size];
+
+#undef __dynamic_array
+#define __dynamic_array(type, item) type item[];
+
+#undef F_STRUCT
+#define F_STRUCT(args...) args
+
+#undef F_printk
+#define F_printk(fmt, args...) fmt, args
+
+#undef FTRACE_ENTRY
+#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter) \
+struct ____ftrace_##name { \
+ tstruct \
+}; \
+static void __always_unused ____ftrace_check_##name(void) \
+{ \
+ struct ____ftrace_##name *__entry = NULL; \
+ \
+ /* force compile-time check on F_printk() */ \
+ printk(print); \
+}
+
+#undef FTRACE_ENTRY_DUP
+#define FTRACE_ENTRY_DUP(name, struct_name, id, tstruct, print, filter) \
+ FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print), \
+ filter)
+
+#include "trace_entries.h"
+
+#undef __field
+#define __field(type, item) \
+ 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;
+
+#undef __field_desc
+#define __field_desc(type, container, item) \
+ ret = trace_define_field(event_call, #type, #item, \
+ offsetof(typeof(field), \
+ container.item), \
+ sizeof(field.container.item), \
+ is_signed_type(type), filter_type); \
+ if (ret) \
+ return ret;
+
+#undef __array
+#define __array(type, item, len) \
+ do { \
+ char *type_str = #type"["__stringify(len)"]"; \
+ BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
+ ret = trace_define_field(event_call, type_str, #item, \
+ offsetof(typeof(field), item), \
+ sizeof(field.item), \
+ is_signed_type(type), filter_type); \
+ if (ret) \
+ return ret; \
+ } while (0);
+
+#undef __array_desc
+#define __array_desc(type, container, item, len) \
+ BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
+ ret = trace_define_field(event_call, #type "[" #len "]", #item, \
+ offsetof(typeof(field), \
+ container.item), \
+ sizeof(field.container.item), \
+ is_signed_type(type), filter_type); \
+ if (ret) \
+ return ret;
+
+#undef __dynamic_array
+#define __dynamic_array(type, item) \
+ ret = trace_define_field(event_call, #type, #item, \
+ offsetof(typeof(field), item), \
+ 0, is_signed_type(type), filter_type);\
+ if (ret) \
+ return ret;
+
+#undef FTRACE_ENTRY
+#define FTRACE_ENTRY(name, struct_name, id, tstruct, print, filter) \
+static int __init \
+ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
{ \
- struct args field; \
+ struct struct_name field; \
int ret; \
+ int filter_type = filter; \
\
tstruct; \
\
- trace_seq_printf(s, "\nprint fmt: \"%s\"\n", tpfmt); \
- \
return ret; \
}
-#include "trace_event_types.h"
+#include "trace_entries.h"
+
+#undef __entry
+#define __entry REC
-#undef TRACE_ZERO_CHAR
-#define TRACE_ZERO_CHAR(arg)
+#undef __field
+#define __field(type, item)
-#undef TRACE_FIELD
-#define TRACE_FIELD(type, item, assign)\
- entry->item = assign;
+#undef __field_desc
+#define __field_desc(type, container, item)
-#undef TRACE_FIELD
-#define TRACE_FIELD(type, item, assign)\
- entry->item = assign;
+#undef __array
+#define __array(type, item, len)
-#undef TP_CMD
-#define TP_CMD(cmd...) cmd
+#undef __array_desc
+#define __array_desc(type, container, item, len)
-#undef TRACE_ENTRY
-#define TRACE_ENTRY entry
+#undef __dynamic_array
+#define __dynamic_array(type, item)
-#undef TRACE_FIELD_SPECIAL
-#define TRACE_FIELD_SPECIAL(type_item, item, cmd) \
- cmd;
+#undef F_printk
+#define F_printk(fmt, args...) __stringify(fmt) ", " __stringify(args)
-#undef TRACE_EVENT_FORMAT
-#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
+#undef FTRACE_ENTRY_REG
+#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, filter,\
+ regfn) \
\
-static struct ftrace_event_call __used \
-__attribute__((__aligned__(4))) \
-__attribute__((section("_ftrace_events"))) event_##call = { \
- .name = #call, \
- .id = proto, \
+struct ftrace_event_class __refdata event_class_ftrace_##call = { \
.system = __stringify(TRACE_SYSTEM), \
- .show_format = ftrace_format_##call, \
+ .define_fields = ftrace_define_fields_##call, \
+ .fields = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\
+ .reg = regfn, \
+}; \
+ \
+struct ftrace_event_call __used event_##call = { \
+ .class = &event_class_ftrace_##call, \
+ { \
+ .name = #call, \
+ }, \
+ .event.type = etype, \
+ .print_fmt = print, \
+ .flags = TRACE_EVENT_FL_IGNORE_ENABLE | TRACE_EVENT_FL_USE_CALL_FILTER, \
+}; \
+struct ftrace_event_call __used \
+__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call;
+
+#undef FTRACE_ENTRY
+#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print, filter) \
+ FTRACE_ENTRY_REG(call, struct_name, etype, \
+ PARAMS(tstruct), PARAMS(print), filter, NULL)
+
+int ftrace_event_is_function(struct ftrace_event_call *call)
+{
+ return call == &event_function;
}
-#include "trace_event_types.h"
+
+#include "trace_entries.h"
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 15:37:49 +0000