/* * Trace files that want to automate creationg 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>/* * module.h includes tracepoints, and because ftrace.h * pulls in module.h: *  trace/ftrace.h -> linux/ftrace_event.h -> linux/perf_event.h -> *  linux/ftrace.h -> linux/module.h * we must include module.h here before we play with any of * the TRACE_EVENT() macros, otherwise the tracepoints included * by module.h may break the build. */#include <linux/module.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 DEFINE_EVENT#define DEFINE_EVENT(template, name, proto, args) \	DEFINE_TRACE(name) #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 CONFIG_EVENT_TRACING#include <trace/ftrace.h>#endif #undef TRACE_EVENT#undef TRACE_EVENT_FN#undef TRACE_EVENT_CONDITION#undef DECLARE_EVENT_CLASS#undef DEFINE_EVENT#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 */