tracing: Fix double CPP substitution in TRACE_EVENT_FN

[~andy/linux] / include / trace / ftrace.h

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 4e81c9b37515a225b978f5c811ec19c0dd9ad50d..57c56a998ee6279dead48b6d2f2ad566b711de69 100644 (file)
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -21,6 +21,9 @@
 #undef __field
 #define __field(type, item)            type    item;
 
+#undef __field_ext
+#define __field_ext(type, item, filter_type)   type    item;
+
 #undef __array
 #define __array(type, item, len)       type    item[len];
 
@@ -42,6 +45,16 @@
        };                                                      \
        static struct ftrace_event_call event_##name
 
+#undef __cpparg
+#define __cpparg(arg...) arg
+
+/* Callbacks are meaningless to ftrace. */
+#undef TRACE_EVENT_FN
+#define TRACE_EVENT_FN(name, proto, args, tstruct,                     \
+               assign, print, reg, unreg)                              \
+       TRACE_EVENT(name, __cpparg(proto), __cpparg(args),              \
+               __cpparg(tstruct), __cpparg(assign), __cpparg(print))   \
+
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
 
@@ -62,7 +75,10 @@
  */
 
 #undef __field
-#define __field(type, item);
+#define __field(type, item)
+
+#undef __field_ext
+#define __field_ext(type, item, filter_type)
 
 #undef __array
 #define __array(type, item, len)
@@ -110,6 +126,9 @@
        if (!ret)                                                       \
                return 0;
 
+#undef __field_ext
+#define __field_ext(type, item, filter_type)   __field(type, item)
+
 #undef __array
 #define __array(type, item, len)                                               \
        ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t"    \
@@ -265,28 +284,33 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags)  \
        
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
-#undef __field
-#define __field(type, item)                                            \
+#undef __field_ext
+#define __field_ext(type, item, filter_type)                           \
        ret = trace_define_field(event_call, #type, #item,              \
                                 offsetof(typeof(field), item),         \
-                                sizeof(field.item), is_signed_type(type));     \
+                                sizeof(field.item),                    \
+                                is_signed_type(type), filter_type);    \
        if (ret)                                                        \
                return ret;
 
+#undef __field
+#define __field(type, item)    __field_ext(type, item, FILTER_OTHER)
+
 #undef __array
 #define __array(type, item, len)                                       \
        BUILD_BUG_ON(len > MAX_FILTER_STR_VAL);                         \
        ret = trace_define_field(event_call, #type "[" #len "]", #item, \
                                 offsetof(typeof(field), item),         \
-                                sizeof(field.item), 0);                \
+                                sizeof(field.item), 0, FILTER_OTHER);  \
        if (ret)                                                        \
                return ret;
 
 #undef __dynamic_array
 #define __dynamic_array(type, item, len)                                      \
        ret = trace_define_field(event_call, "__data_loc " #type "[]", #item,  \
-                               offsetof(typeof(field), __data_loc_##item),    \
-                                sizeof(field.__data_loc_##item), 0);
+                                offsetof(typeof(field), __data_loc_##item),   \
+                                sizeof(field.__data_loc_##item), 0,           \
+                                FILTER_OTHER);
 
 #undef __string
 #define __string(item, src) __dynamic_array(char, item, -1)
@@ -299,11 +323,9 @@ ftrace_define_fields_##call(struct ftrace_event_call *event_call)  \
        struct ftrace_raw_##call field;                                 \
        int ret;                                                        \
                                                                        \
-       __common_field(int, type, 1);                                   \
-       __common_field(unsigned char, flags, 0);                        \
-       __common_field(unsigned char, preempt_count, 0);                \
-       __common_field(int, pid, 1);                                    \
-       __common_field(int, tgid, 1);                                   \
+       ret = trace_define_common_fields(event_call);                   \
+       if (ret)                                                        \
+               return ret;                                             \
                                                                        \
        tstruct;                                                        \
                                                                        \
@@ -322,6 +344,9 @@ ftrace_define_fields_##call(struct ftrace_event_call *event_call)   \
 #undef __field
 #define __field(type, item)
 
+#undef __field_ext
+#define __field_ext(type, item, filter_type)
+
 #undef __array
 #define __array(type, item, len)