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authorFrederic Weisbecker <fweisbec@gmail.com>2009-08-27 18:17:34 +0200
committerIngo Molnar <mingo@elte.hu>2009-08-27 18:32:54 +0200
commit6c347d43eea29221a8ebab9ff9cbe7a00cddac98 (patch)
treee5afc2f493816fa1401a4ef4724167e3972cd209 /include/trace
parent35dce1a99d010f3d738af4ce1b9b77302fdfe69c (diff)
downloadlinux-6c347d43eea29221a8ebab9ff9cbe7a00cddac98.tar.gz
tracing: Undef TRACE_EVENT_FN between trace events headers inclusion
The recent commit:

	tracing/events: fix the include file dependencies

fixed a file dependency problem while including more than
one trace event header file.

This fix undefined TRACE_EVENT after an event header macro
preprocessing in order to make tracepoint.h able to correctly declare
the tracepoints necessary for the next event header file.

But now we also need to undefine TRACE_EVENT_FN at the end of an event
header file preprocessing for the same reason.

This fixes the following build error:

In file included from include/trace/events/napi.h:5,
                 from net/core/net-traces.c:28:
include/linux/tracepoint.h:285:1: warning: "TRACE_EVENT_FN" redefined
In file included from include/trace/define_trace.h:61,
                 from include/trace/events/skb.h:40,
                 from net/core/net-traces.c:27:
include/trace/ftrace.h:50:1: warning: this is the location of the previous definition
In file included from include/trace/events/napi.h:5,
                 from net/core/net-traces.c:28:
include/linux/tracepoint.h:285:1: warning: "TRACE_EVENT_FN" redefined
In file included from include/trace/define_trace.h:61,
                 from include/trace/events/skb.h:40,
                 from net/core/net-traces.c:27:
include/trace/ftrace.h:50:1: warning: this is the location of the previous definition

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <20090827161732.GA7618@nowhere>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/define_trace.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h
index a89ed590597a..2a4b3bf74033 100644
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -62,6 +62,7 @@
 #endif
 
 #undef TRACE_EVENT
+#undef TRACE_EVENT_FN
 #undef TRACE_HEADER_MULTI_READ
 
 /* Only undef what we defined in this file */