[PATCH 4/4] tracing: avoid warnings from zero-arg tracepoints

Jeremy Fitzhardinge
2009-04-17T06:35:53Z

From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

Tracepoints with no arguments can issue two warnings:
"field" defined by not used
"ret" is uninitialized in this function

Mark field as being OK to leave unused, and initialize ret.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
include/trace/ftrace.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 60c5323..39a3351 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -160,8 +160,8 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
static int \
ftrace_format_##call(struct trace_seq *s) \
{ \
- struct ftrace_raw_##call field; \
- int ret; \
+ struct ftrace_raw_##call field __attribute__((unused)); \
+ int ret = 0; \
\
tstruct; \
\
--
1.6.0.6