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-rw-r--r--include/linux/ftrace_event.h7
-rw-r--r--include/trace/ftrace.h16
2 files changed, 12 insertions, 11 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 46a27f2695a6..e61a7403f3d0 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -122,8 +122,9 @@ extern int filter_current_check_discard(struct ftrace_event_call *call,
struct ring_buffer_event *event);
extern int trace_define_field(struct ftrace_event_call *call, char *type,
- char *name, int offset, int size);
+ char *name, int offset, int size, int is_signed);
+#define is_signed_type(type) (((type)(-1)) < 0)
/*
* The double __builtin_constant_p is because gcc will give us an error
@@ -144,10 +145,10 @@ do { \
__trace_printk(ip, fmt, ##args); \
} while (0)
-#define __common_field(type, item) \
+#define __common_field(type, item, is_signed) \
ret = trace_define_field(event_call, #type, "common_" #item, \
offsetof(typeof(field.ent), item), \
- sizeof(field.ent.item)); \
+ sizeof(field.ent.item), is_signed); \
if (ret) \
return ret;
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 1e681142f1da..edb02bc9f8ff 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -225,7 +225,7 @@ ftrace_format_##call(struct trace_seq *s) \
#define __field(type, item) \
ret = trace_define_field(event_call, #type, #item, \
offsetof(typeof(field), item), \
- sizeof(field.item)); \
+ sizeof(field.item), is_signed_type(type)); \
if (ret) \
return ret;
@@ -234,7 +234,7 @@ ftrace_format_##call(struct trace_seq *s) \
BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
ret = trace_define_field(event_call, #type "[" #len "]", #item, \
offsetof(typeof(field), item), \
- sizeof(field.item)); \
+ sizeof(field.item), 0); \
if (ret) \
return ret;
@@ -242,7 +242,7 @@ ftrace_format_##call(struct trace_seq *s) \
#define __string(item, src) \
ret = trace_define_field(event_call, "__str_loc", #item, \
offsetof(typeof(field), __str_loc_##item), \
- sizeof(field.__str_loc_##item));
+ sizeof(field.__str_loc_##item), 0);
#undef TRACE_EVENT
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
@@ -253,11 +253,11 @@ ftrace_define_fields_##call(void) \
struct ftrace_event_call *event_call = &event_##call; \
int ret; \
\
- __common_field(int, type); \
- __common_field(unsigned char, flags); \
- __common_field(unsigned char, preempt_count); \
- __common_field(int, pid); \
- __common_field(int, tgid); \
+ __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); \
\
tstruct; \
\