tracing: Create class struct for events

[lisovros/linux_canprio.git] / include / trace / ftrace.h

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 75dd7787fb373acaec6151f95c398e0ce069c6ad..7dcdfd824aab62c36e33bbf0bf05adbab1626a3e 100644 (file)
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -62,7 +62,10 @@
                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                 \
@@ -430,22 +433,6 @@ perf_trace_disable_##name(struct ftrace_event_call *unused)                \
  *
  * Override the macros in <trace/trace_events.h> to include the following:
  *
- * static void ftrace_event_<call>(proto)
- * {
- *     event_trace_printk(_RET_IP_, "<call>: " <fmt>);
- * }
- *
- * static int ftrace_reg_event_<call>(struct ftrace_event_call *unused)
- * {
- *     return register_trace_<call>(ftrace_event_<call>);
- * }
- *
- * static void ftrace_unreg_event_<call>(struct ftrace_event_call *unused)
- * {
- *     unregister_trace_<call>(ftrace_event_<call>);
- * }
- *
- *
  * For those macros defined with TRACE_EVENT:
  *
  * static struct ftrace_event_call event_<call>;
@@ -497,17 +484,21 @@ perf_trace_disable_##name(struct ftrace_event_call *unused)               \
  *
  * static const char print_fmt_<call>[] = <TP_printk>;
  *
+ * static struct ftrace_event_class __used event_class_<template> = {
+ *     .system                 = "<system>",
+ * };
+ *
  * static struct ftrace_event_call __used
  * __attribute__((__aligned__(4)))
  * __attribute__((section("_ftrace_events"))) event_<call> = {
  *     .name                   = "<call>",
- *     .system                 = "<system>",
+ *     .class                  = event_class_<template>,
  *     .raw_init               = trace_event_raw_init,
- *     .regfunc                = ftrace_reg_event_<call>,
- *     .unregfunc              = ftrace_unreg_event_<call>,
+ *     .regfunc                = ftrace_raw_reg_event_<call>,
+ *     .unregfunc              = ftrace_raw_unreg_event_<call>,
  *     .print_fmt              = print_fmt_<call>,
  *     .define_fields          = ftrace_define_fields_<call>,
- * }
+ * };
  *
  */
 
@@ -627,7 +618,10 @@ static struct trace_event ftrace_event_type_##call = {                     \
 
 #undef DECLARE_EVENT_CLASS
 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
-static const char print_fmt_##call[] = print;
+static const char print_fmt_##call[] = print;                          \
+static struct ftrace_event_class __used event_class_##call = {         \
+       .system                 = __stringify(TRACE_SYSTEM)             \
+};
 
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, call, proto, args)                      \
@@ -636,7 +630,7 @@ static struct ftrace_event_call __used                                      \
 __attribute__((__aligned__(4)))                                                \
 __attribute__((section("_ftrace_events"))) event_##call = {            \
        .name                   = #call,                                \
-       .system                 = __stringify(TRACE_SYSTEM),            \
+       .class                  = &event_class_##template,              \
        .event                  = &ftrace_event_type_##call,            \
        .raw_init               = trace_event_raw_init,                 \
        .regfunc                = ftrace_raw_reg_event_##call,          \
@@ -644,7 +638,7 @@ __attribute__((section("_ftrace_events"))) event_##call = {         \
        .print_fmt              = print_fmt_##template,                 \
        .define_fields          = ftrace_define_fields_##template,      \
        _TRACE_PERF_INIT(call)                                  \
-}
+};
 
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, call, proto, args, print)         \
@@ -655,7 +649,7 @@ static struct ftrace_event_call __used                                      \
 __attribute__((__aligned__(4)))                                                \
 __attribute__((section("_ftrace_events"))) event_##call = {            \
        .name                   = #call,                                \
-       .system                 = __stringify(TRACE_SYSTEM),            \
+       .class                  = &event_class_##template,              \
        .event                  = &ftrace_event_type_##call,            \
        .raw_init               = trace_event_raw_init,                 \
        .regfunc                = ftrace_raw_reg_event_##call,          \