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tracing/events: fix the include file dependencies 

The TRACE_EVENT depends on the include/linux/tracepoint.h first
and include/trace/ftrace.h later, if we include the ftrace.h early,
a building error will occur.

Both define TRACE_EVENT in trace_a.h and trace_b.h, if we include
those in .c file, like this:

#define CREATE_TRACE_POINTS
include <trace/events/trace_a.h>
include <trace/events/trace_b.h>

The above will not work, because the TRACE_EVENT was re-defined by
the previous .h file.

Reported-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
LKML-Reference: <4A937F5E.3020802@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Xiao Guangrong 2009-08-25 14:06:22 +08:00 committed by Steven Rostedt
parent 5079f3261f
commit 5ac35daa93
2 changed files with 2 additions and 2 deletions
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3
include/linux/tracepoint.h
View File

@ -180,6 +180,7 @@ static inline void tracepoint_synchronize_unregister(void)
}
#define PARAMS(args...) args
#endif
#ifndef TRACE_EVENT
/*
@ -287,5 +288,3 @@ static inline void tracepoint_synchronize_unregister(void)
#define TRACE_EVENT(name, proto, args, struct, assign, print) \
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
#endif
#endif

1
include/trace/define_trace.h
View File

@ -56,6 +56,7 @@
#include <trace/ftrace.h>
#endif
#undef TRACE_EVENT
#undef TRACE_HEADER_MULTI_READ
/* Only undef what we defined in this file */