Release 4.7 include/trace/define_trace.h

/*
 * Trace files that want to automate creation of all tracepoints defined
 * in their file should include this file. The following are macros that the
 * trace file may define:
 *
 * TRACE_SYSTEM defines the system the tracepoint is for
 *
 * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
 *     This macro may be defined to tell define_trace.h what file to include.
 *     Note, leave off the ".h".
 *
 * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
 *     then this macro can define the path to use. Note, the path is relative to
 *     define_trace.h, not the file including it. Full path names for out of tree
 *     modules must be used.
 */

#ifdef CREATE_TRACE_POINTS

/* Prevent recursion */

#undef CREATE_TRACE_POINTS

#include <linux/stringify.h>


#undef TRACE_EVENT

#define TRACE_EVENT(name, proto, args, tstruct, assign, print)	\
	DEFINE_TRACE(name)


#undef TRACE_EVENT_CONDITION

#define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
	TRACE_EVENT(name,                                               \
                PARAMS(proto),                                          \
                PARAMS(args),                                           \
                PARAMS(tstruct),                                        \
                PARAMS(assign),                                         \
                PARAMS(print))


#undef TRACE_EVENT_FN

#define TRACE_EVENT_FN(name, proto, args, tstruct,               \
		assign, print, reg, unreg)			\
	DEFINE_TRACE_FN(name, reg, unreg)


#undef TRACE_EVENT_FN_COND

#define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct,               \
		assign, print, reg, unreg)			\
	DEFINE_TRACE_FN(name, reg, unreg)


#undef DEFINE_EVENT

#define DEFINE_EVENT(template, name, proto, args) \
	DEFINE_TRACE(name)


#undef DEFINE_EVENT_FN

#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
	DEFINE_TRACE_FN(name, reg, unreg)


#undef DEFINE_EVENT_PRINT

#define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\
	DEFINE_TRACE(name)


#undef DEFINE_EVENT_CONDITION

#define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \
	DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))


#undef DECLARE_TRACE

#define DECLARE_TRACE(name, proto, args)	\
	DEFINE_TRACE(name)


#undef TRACE_INCLUDE

#undef __TRACE_INCLUDE

#ifndef TRACE_INCLUDE_FILE

# define TRACE_INCLUDE_FILE TRACE_SYSTEM

# define UNDEF_TRACE_INCLUDE_FILE
#endif

#ifndef TRACE_INCLUDE_PATH

# define __TRACE_INCLUDE(system) <trace/events/system.h>

# define UNDEF_TRACE_INCLUDE_PATH
#else

# define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
#endif


# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)

/* Let the trace headers be reread */

#define TRACE_HEADER_MULTI_READ

#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)

/* Make all open coded DECLARE_TRACE nops */

#undef DECLARE_TRACE

#define DECLARE_TRACE(name, proto, args)

#ifdef TRACEPOINTS_ENABLED
#include <trace/trace_events.h>
#include <trace/perf.h>
#endif


#undef TRACE_EVENT

#undef TRACE_EVENT_FN

#undef TRACE_EVENT_FN_COND

#undef TRACE_EVENT_CONDITION

#undef DECLARE_EVENT_CLASS

#undef DEFINE_EVENT

#undef DEFINE_EVENT_FN

#undef DEFINE_EVENT_PRINT

#undef DEFINE_EVENT_CONDITION

#undef TRACE_HEADER_MULTI_READ

#undef DECLARE_TRACE

/* Only undef what we defined in this file */
#ifdef UNDEF_TRACE_INCLUDE_FILE

# undef TRACE_INCLUDE_FILE

# undef UNDEF_TRACE_INCLUDE_FILE
#endif

#ifdef UNDEF_TRACE_INCLUDE_PATH

# undef TRACE_INCLUDE_PATH

# undef UNDEF_TRACE_INCLUDE_PATH
#endif

/* We may be processing more files */

#define CREATE_TRACE_POINTS

#endif /* CREATE_TRACE_POINTS */
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Directory: include/trace

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