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Diffstat (limited to 'include/trace/ftrace.h')
-rw-r--r--include/trace/ftrace.h41
1 files changed, 36 insertions, 5 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 41bf65f04dd9..37d4b10b111d 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -18,6 +18,34 @@
#include <linux/ftrace_event.h>
+#ifndef TRACE_SYSTEM_VAR
+#define TRACE_SYSTEM_VAR TRACE_SYSTEM
+#endif
+
+#define __app__(x, y) str__##x##y
+#define __app(x, y) __app__(x, y)
+
+#define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
+
+#define TRACE_MAKE_SYSTEM_STR() \
+ static const char TRACE_SYSTEM_STRING[] = \
+ __stringify(TRACE_SYSTEM)
+
+TRACE_MAKE_SYSTEM_STR();
+
+#undef TRACE_DEFINE_ENUM
+#define TRACE_DEFINE_ENUM(a) \
+ static struct trace_enum_map __used __initdata \
+ __##TRACE_SYSTEM##_##a = \
+ { \
+ .system = TRACE_SYSTEM_STRING, \
+ .enum_string = #a, \
+ .enum_value = a \
+ }; \
+ static struct trace_enum_map __used \
+ __attribute__((section("_ftrace_enum_map"))) \
+ *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a
+
/*
* DECLARE_EVENT_CLASS can be used to add a generic function
* handlers for events. That is, if all events have the same
@@ -105,7 +133,6 @@
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
/*
* Stage 2 of the trace events.
*
@@ -122,6 +149,9 @@
* The size of an array is also encoded, in the higher 16 bits of <item>.
*/
+#undef TRACE_DEFINE_ENUM
+#define TRACE_DEFINE_ENUM(a)
+
#undef __field
#define __field(type, item)
@@ -539,7 +569,7 @@ static inline notrace int ftrace_get_offsets_##call( \
* .trace = ftrace_raw_output_<call>, <-- stage 2
* };
*
- * static const char print_fmt_<call>[] = <TP_printk>;
+ * static char print_fmt_<call>[] = <TP_printk>;
*
* static struct ftrace_event_class __used event_class_<template> = {
* .system = "<system>",
@@ -690,9 +720,9 @@ static inline void ftrace_test_probe_##call(void) \
#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 char print_fmt_##call[] = print; \
static struct ftrace_event_class __used __refdata event_class_##call = { \
- .system = __stringify(TRACE_SYSTEM), \
+ .system = TRACE_SYSTEM_STRING, \
.define_fields = ftrace_define_fields_##call, \
.fields = LIST_HEAD_INIT(event_class_##call.fields),\
.raw_init = trace_event_raw_init, \
@@ -719,7 +749,7 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
#undef DEFINE_EVENT_PRINT
#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
\
-static const char print_fmt_##call[] = print; \
+static char print_fmt_##call[] = print; \
\
static struct ftrace_event_call __used event_##call = { \
.class = &event_class_##template, \
@@ -735,6 +765,7 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+#undef TRACE_SYSTEM_VAR
#ifdef CONFIG_PERF_EVENTS