tracing: add TRACE_EVENT_MAP

[deliverable/linux.git] / include / trace / trace_events.h

diff --git a/include/trace/trace_events.h b/include/trace/trace_events.h
index 467e12f780d863956b1b1b650c406d9d4cb5c0c2..deb5bc6954b181283dba24d50e9feca44b828f0c 100644 (file)
--- a/include/trace/trace_events.h
+++ b/include/trace/trace_events.h
@@ -65,6 +65,15 @@ TRACE_MAKE_SYSTEM_STR();
                             PARAMS(print));                   \
        DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args));
 
+#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 __field
 #define __field(type, item)            type    item;
@@ -108,6 +117,11 @@ TRACE_MAKE_SYSTEM_STR();
        static struct trace_event_call  __used          \
        __attribute__((__aligned__(4))) event_##name
 
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(template, name, map, proto, args)     \
+       static struct trace_event_call  __used          \
+       __attribute__((__aligned__(4))) event_##map
+
 #undef DEFINE_EVENT_FN
 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg)       \
        DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
@@ -191,6 +205,9 @@ TRACE_MAKE_SYSTEM_STR();
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, name, proto, args)
 
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(template, name, map, proto, args)
+
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
        DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
@@ -426,6 +443,9 @@ trace_event_define_fields_##call(struct trace_event_call *event_call)       \
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, name, proto, args)
 
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(template, name, map, proto, args)
+
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
        DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
@@ -506,6 +526,9 @@ static inline notrace int trace_event_get_offsets_##call(           \
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, name, proto, args)
 
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(template, name, map, proto, args)
+
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
        DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
@@ -700,6 +723,13 @@ static inline void ftrace_test_probe_##call(void)                  \
        check_trace_callback_type_##call(trace_event_raw_event_##template); \
 }
 
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(template, call, map, proto, args)             \
+static inline void ftrace_test_probe_##map(void)                       \
+{                                                                      \
+       check_trace_callback_type_##call(trace_event_raw_event_##template); \
+}
+
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)
 
@@ -749,6 +779,26 @@ static struct trace_event_call __used event_##call = {                     \
 static struct trace_event_call __used                                  \
 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
 
+#undef DEFINE_EVENT_MAP
+#define DEFINE_EVENT_MAP(_template, _call, _map, _proto, _args)                \
+                                                                       \
+static struct trace_event_map event_map_##_map = {                     \
+       .tp = &__tracepoint_##_call,                                    \
+       .name = #_map,                                                  \
+};                                                                     \
+                                                                       \
+static struct trace_event_call __used event_##_map = {                 \
+       .class                  = &event_class_##_template,             \
+       {                                                               \
+               .map                    = &event_map_##_map,            \
+       },                                                              \
+       .event.funcs            = &trace_event_type_funcs_##_template,  \
+       .print_fmt              = print_fmt_##_template,                \
+       .flags                  = TRACE_EVENT_FL_TRACEPOINT | TRACE_EVENT_FL_MAP,\
+};                                                                     \
+static struct trace_event_call __used                                  \
+__attribute__((section("_ftrace_events"))) *__event_##_map = &event_##_map
+
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, call, proto, args, print)         \
                                                                        \