linux-stable/include/trace
Steven Rostedt c94fbe1d9e tracing: Only process module tracepoints once
The commit:

 9f987b3141f086de27832514aad9f50a53f754
 tracing: Include module.h in define_trace.h

only solved half the problem. If the trace/events/module.h header is
included at the time of define_trace.h (or in ftrace.h within it),
the module.h TRACE_SYSTEM will override the current TRACE_SYSTEM
macro.

Since define_trace.h is included when CREATE_TRACE_POINTS is set,
and the first thing it does is to #undef CREATE_TRACE_POINTS,
by placing the module.h TRACE_SYSTEM inside a
 #ifdef CREATE_TRACE_POINTS
we can prevent it from overriding the TRACE_SYSTEM that is
being processed, and still process the module.h tracepoints
when the module code defines CREATE_TRACE_POINTS and includes
the trace/events/module.h header.

As with commit 9f987b3141, this is only an issue if module.h
is not included before the trace/events/<event>.h file is
included, which (luckily) has not happened yet.

Reported-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-01-14 11:25:58 -05:00
..
events tracing: Only process module tracepoints once 2011-01-14 11:25:58 -05:00
define_trace.h tracing: Include module.h in define_trace.h 2011-01-07 15:44:56 -05:00
ftrace.h tracing/events: Show real number in array fields 2010-11-19 10:18:47 -05:00
syscall.h tracing: Use a global field list for all syscall exit events 2010-06-28 17:12:44 -04:00