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tracing: avoid warnings from zero-arg tracepoints 

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.

[ Impact: fix false positive compiler warnings. ]

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: mathieu.desnoyers@polymtl.ca
LKML-Reference: <1239950139-1119-5-git-send-email-jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge 2009-04-16 23:35:39 -07:00 committed by Ingo Molnar
parent 9ea21c1ecd
commit 76aa81118d
1 changed files with 2 additions and 2 deletions
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4
include/trace/ftrace.h
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@ -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; \
\