define_trace.h 3.0 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_CONDITION
  25. #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
  26. TRACE_EVENT(name, \
  27. PARAMS(proto), \
  28. PARAMS(args), \
  29. PARAMS(tstruct), \
  30. PARAMS(assign), \
  31. PARAMS(print))
  32. #undef TRACE_EVENT_FN
  33. #define TRACE_EVENT_FN(name, proto, args, tstruct, \
  34. assign, print, reg, unreg) \
  35. DEFINE_TRACE_FN(name, reg, unreg)
  36. #undef DEFINE_EVENT
  37. #define DEFINE_EVENT(template, name, proto, args) \
  38. DEFINE_TRACE(name)
  39. #undef DEFINE_EVENT_PRINT
  40. #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
  41. DEFINE_TRACE(name)
  42. #undef DEFINE_EVENT_CONDITION
  43. #define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \
  44. DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
  45. #undef DECLARE_TRACE
  46. #define DECLARE_TRACE(name, proto, args) \
  47. DEFINE_TRACE(name)
  48. #undef TRACE_INCLUDE
  49. #undef __TRACE_INCLUDE
  50. #ifndef TRACE_INCLUDE_FILE
  51. # define TRACE_INCLUDE_FILE TRACE_SYSTEM
  52. # define UNDEF_TRACE_INCLUDE_FILE
  53. #endif
  54. #ifndef TRACE_INCLUDE_PATH
  55. # define __TRACE_INCLUDE(system) <trace/events/system.h>
  56. # define UNDEF_TRACE_INCLUDE_PATH
  57. #else
  58. # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
  59. #endif
  60. # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
  61. /* Let the trace headers be reread */
  62. #define TRACE_HEADER_MULTI_READ
  63. #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
  64. /* Make all open coded DECLARE_TRACE nops */
  65. #undef DECLARE_TRACE
  66. #define DECLARE_TRACE(name, proto, args)
  67. #ifdef CONFIG_EVENT_TRACING
  68. #include <trace/ftrace.h>
  69. #endif
  70. #undef TRACE_EVENT
  71. #undef TRACE_EVENT_FN
  72. #undef TRACE_EVENT_CONDITION
  73. #undef DECLARE_EVENT_CLASS
  74. #undef DEFINE_EVENT
  75. #undef DEFINE_EVENT_PRINT
  76. #undef DEFINE_EVENT_CONDITION
  77. #undef TRACE_HEADER_MULTI_READ
  78. #undef DECLARE_TRACE
  79. /* Only undef what we defined in this file */
  80. #ifdef UNDEF_TRACE_INCLUDE_FILE
  81. # undef TRACE_INCLUDE_FILE
  82. # undef UNDEF_TRACE_INCLUDE_FILE
  83. #endif
  84. #ifdef UNDEF_TRACE_INCLUDE_PATH
  85. # undef TRACE_INCLUDE_PATH
  86. # undef UNDEF_TRACE_INCLUDE_PATH
  87. #endif
  88. /* We may be processing more files */
  89. #define CREATE_TRACE_POINTS
  90. #endif /* CREATE_TRACE_POINTS */