tracing: Fix sign fields in ftrace_define_fields_##call()

Add is_signed_type() call to trace_define_field() in ftrace macros.

The code previously just passed in 0 (false), disregarding whether
or not the field was actually a signed type.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
LKML-Reference: <4B273D3A.6020007@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 7352315..c6fe03e 100644 (file)
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -414,7 +414,8 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags)    \
        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, FILTER_OTHER);  \
+                                sizeof(field.item),                    \
+                                is_signed_type(type), FILTER_OTHER);   \
        if (ret)                                                        \
                return ret;
 
@@ -422,8 +423,8 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags)    \
 #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,           \
-                                FILTER_OTHER);
+                                sizeof(field.__data_loc_##item),              \
+                                is_signed_type(type), FILTER_OTHER);
 
 #undef __string
 #define __string(item, src) __dynamic_array(char, item, -1)

diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 458e5bf..d4fa5dc 100644 (file)
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -158,7 +158,8 @@ ftrace_format_##name(struct ftrace_event_call *unused,                      \
        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, FILTER_OTHER);  \
+                                sizeof(field.item),                    \
+                                is_signed_type(type), FILTER_OTHER);   \
        if (ret)                                                        \
                return ret;
 
@@ -168,8 +169,8 @@ ftrace_format_##name(struct ftrace_event_call *unused,                      \
        ret = trace_define_field(event_call, #type "[" #len "]", #item, \
                                 offsetof(typeof(field),                \
                                          container.item),              \
-                                sizeof(field.container.item), 0,       \
-                                FILTER_OTHER);                         \
+                                sizeof(field.container.item),          \
+                                is_signed_type(type), FILTER_OTHER);   \
        if (ret)                                                        \
                return ret;