tracing: Fix anonymous unions in struct ftrace_event_call

gcc <= 4.5.x has significant limitations with respect to initialization
of anonymous unions within structures. They need to be surrounded by
brackets, _and_ they need to be initialized in the same order in which
they appear in the structure declaration.

Link: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10676
Link: http://lkml.kernel.org/r/1397077568-3156-1-git-send-email-mathieu.desnoyers@efficios.com
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 1e67b7a..af94c98 100644 (file)
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -119,8 +119,10 @@ extern struct trace_event_functions exit_syscall_print_funcs;
        static struct syscall_metadata __syscall_meta_##sname;          \
        static struct ftrace_event_call __used                          \
          event_enter_##sname = {                                       \
-               .name                   = "sys_enter"#sname,            \
                .class                  = &event_class_syscall_enter,   \
+               {                                                       \
+                       .name                   = "sys_enter"#sname,    \
+               },                                                      \
                .event.funcs            = &enter_syscall_print_funcs,   \
                .data                   = (void *)&__syscall_meta_##sname,\
                .flags                  = TRACE_EVENT_FL_CAP_ANY,       \
@@ -133,8 +135,10 @@ extern struct trace_event_functions exit_syscall_print_funcs;
        static struct syscall_metadata __syscall_meta_##sname;          \
        static struct ftrace_event_call __used                          \
          event_exit_##sname = {                                        \
-               .name                   = "sys_exit"#sname,             \
                .class                  = &event_class_syscall_exit,    \
+               {                                                       \
+                       .name                   = "sys_exit"#sname,     \
+               },                                                      \
                .event.funcs            = &exit_syscall_print_funcs,    \
                .data                   = (void *)&__syscall_meta_##sname,\
                .flags                  = TRACE_EVENT_FL_CAP_ANY,       \

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 9c44c11..0a1a4f7 100644 (file)
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -470,8 +470,10 @@ static inline notrace int ftrace_get_offsets_##call(                       \
  * };
  *
  * static struct ftrace_event_call event_<call> = {
- *     .tp                     = &__tracepoint_<call>,
  *     .class                  = event_class_<template>,
+ *     {
+ *             .tp                     = &__tracepoint_<call>,
+ *     },
  *     .event                  = &ftrace_event_type_<call>,
  *     .print_fmt              = print_fmt_<call>,
  *     .flags                  = TRACE_EVENT_FL_TRACEPOINT,
@@ -606,8 +608,10 @@ static struct ftrace_event_class __used __refdata event_class_##call = { \
 #define DEFINE_EVENT(template, call, proto, args)                      \
                                                                        \
 static struct ftrace_event_call __used event_##call = {                        \
-       .tp                     = &__tracepoint_##call,                 \
        .class                  = &event_class_##template,              \
+       {                                                               \
+               .tp                     = &__tracepoint_##call,         \
+       },                                                              \
        .event.funcs            = &ftrace_event_type_funcs_##template,  \
        .print_fmt              = print_fmt_##template,                 \
        .flags                  = TRACE_EVENT_FL_TRACEPOINT,            \
@@ -621,8 +625,10 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
 static const char print_fmt_##call[] = print;                          \
                                                                        \
 static struct ftrace_event_call __used event_##call = {                        \
-       .tp                     = &__tracepoint_##call,                 \
        .class                  = &event_class_##template,              \
+       {                                                               \
+               .tp                     = &__tracepoint_##call,         \
+       },                                                              \
        .event.funcs            = &ftrace_event_type_funcs_##call,      \
        .print_fmt              = print_fmt_##call,                     \
        .flags                  = TRACE_EVENT_FL_TRACEPOINT,            \

diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index ee0a509..d4ddde2 100644 (file)
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -173,9 +173,11 @@ struct ftrace_event_class __refdata event_class_ftrace_##call = {  \
 };                                                                     \
                                                                        \
 struct ftrace_event_call __used event_##call = {                       \
-       .name                   = #call,                                \
-       .event.type             = etype,                                \
        .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, \
 };                                                                     \