[PATCH 3/3] tracing: Fix sign fields in ftrace_define_fields_##call()

Steven Rostedt
2009-12-30T16:26:53Z

[-- Attachment #1: 0003-tracing-Fix-sign-fields-in-ftrace_define_fields_-cal.patch --]
[-- Type: text/plain, Size: 2551 bytes --]

From: Lai Jiangshan <laijs@cn.fujitsu.com>

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>
---
include/trace/ftrace.h | 7 ++++---
kernel/trace/trace_export.c | 7 ++++---
2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 7352315..c6fe03e 100644
--- 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
--- 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;

--
1.6.5