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authorSteven Rostedt <srostedt@redhat.com>2010-05-25 06:19:35 -0700
committerSteven Rostedt <rostedt@goodmis.org>2010-05-25 06:19:35 -0700
commit49c177461bfbedeccbab22bf3905db2f9da7f1c3 (patch)
treee58f08de9c82eab2589bfc22ece178af44c3b495
parent87f44bbc246c5244c76a701f8eefba7788bce64a (diff)
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tracing: Add __used annotation to event variable
The TRACE_EVENT() macros automate creation of trace events. To automate initialization, the set up variables are loaded in a special section that is read on boot up. GCC is not aware that these static variables are used and will complain about them if we do not inform GCC that they are indeed used. One of the declarations of the event element was missing a __used annotation. This patch adds it. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-rw-r--r--include/trace/ftrace.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 0152b8673bd..34bead70d17 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -68,7 +68,7 @@
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, name, proto, args) \
- static struct ftrace_event_call \
+ static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) event_##name
#undef DEFINE_EVENT_PRINT