define_trace.h 2.1 KB

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  1. /*
  2. * Trace files that want to automate creationg of all tracepoints defined
  3. * in their file should include this file. The following are macros that the
  4. * trace file may define:
  5. *
  6. * TRACE_SYSTEM defines the system the tracepoint is for
  7. *
  8. * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
  9. * This macro may be defined to tell define_trace.h what file to include.
  10. * Note, leave off the ".h".
  11. *
  12. * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
  13. * then this macro can define the path to use. Note, the path is relative to
  14. * define_trace.h, not the file including it. Full path names for out of tree
  15. * modules must be used.
  16. */
  17. #ifdef CREATE_TRACE_POINTS
  18. /* Prevent recursion */
  19. #undef CREATE_TRACE_POINTS
  20. #include <linux/stringify.h>
  21. #undef TRACE_EVENT
  22. #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
  23. DEFINE_TRACE(name)
  24. #undef TRACE_EVENT_FN
  25. #define TRACE_EVENT_FN(name, proto, args, tstruct, \
  26. assign, print, reg, unreg) \
  27. DEFINE_TRACE_FN(name, reg, unreg)
  28. #undef DECLARE_TRACE
  29. #define DECLARE_TRACE(name, proto, args) \
  30. DEFINE_TRACE(name)
  31. #undef TRACE_INCLUDE
  32. #undef __TRACE_INCLUDE
  33. #ifndef TRACE_INCLUDE_FILE
  34. # define TRACE_INCLUDE_FILE TRACE_SYSTEM
  35. # define UNDEF_TRACE_INCLUDE_FILE
  36. #endif
  37. #ifndef TRACE_INCLUDE_PATH
  38. # define __TRACE_INCLUDE(system) <trace/events/system.h>
  39. # define UNDEF_TRACE_INCLUDE_PATH
  40. #else
  41. # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
  42. #endif
  43. # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
  44. /* Let the trace headers be reread */
  45. #define TRACE_HEADER_MULTI_READ
  46. #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
  47. #ifdef CONFIG_EVENT_TRACING
  48. #include <trace/ftrace.h>
  49. #endif
  50. #undef TRACE_HEADER_MULTI_READ
  51. /* Only undef what we defined in this file */
  52. #ifdef UNDEF_TRACE_INCLUDE_FILE
  53. # undef TRACE_INCLUDE_FILE
  54. # undef UNDEF_TRACE_INCLUDE_FILE
  55. #endif
  56. #ifdef UNDEF_TRACE_INCLUDE_PATH
  57. # undef TRACE_INCLUDE_PATH
  58. # undef UNDEF_TRACE_INCLUDE_PATH
  59. #endif
  60. /* We may be processing more files */
  61. #define CREATE_TRACE_POINTS
  62. #endif /* CREATE_TRACE_POINTS */