| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 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 | |
| 18 | #ifdef CREATE_TRACE_POINTS |
| 19 | |
| 20 | /* Prevent recursion */ |
| 21 | #undef CREATE_TRACE_POINTS |
| 22 | |
| 23 | #include <linux/stringify.h> |
| 24 | |
| 25 | #undef TRACE_EVENT |
| 26 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ |
| 27 | DEFINE_TRACE(name) |
| 28 | |
| 29 | #undef TRACE_EVENT_CONDITION |
| 30 | #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \ |
| 31 | TRACE_EVENT(name, \ |
| 32 | PARAMS(proto), \ |
| 33 | PARAMS(args), \ |
| 34 | PARAMS(tstruct), \ |
| 35 | PARAMS(assign), \ |
| 36 | PARAMS(print)) |
| 37 | |
| 38 | #undef TRACE_EVENT_FN |
| 39 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ |
| 40 | assign, print, reg, unreg) \ |
| 41 | DEFINE_TRACE_FN(name, reg, unreg) |
| 42 | |
| 43 | #undef DEFINE_EVENT |
| 44 | #define DEFINE_EVENT(template, name, proto, args) \ |
| 45 | DEFINE_TRACE(name) |
| 46 | |
| 47 | #undef DEFINE_EVENT_PRINT |
| 48 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 49 | DEFINE_TRACE(name) |
| 50 | |
| 51 | #undef DEFINE_EVENT_CONDITION |
| 52 | #define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \ |
| 53 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 54 | |
| 55 | #undef DECLARE_TRACE |
| 56 | #define DECLARE_TRACE(name, proto, args) \ |
| 57 | DEFINE_TRACE(name) |
| 58 | |
| 59 | #undef TRACE_INCLUDE |
| 60 | #undef __TRACE_INCLUDE |
| 61 | |
| 62 | #ifndef TRACE_INCLUDE_FILE |
| 63 | # define TRACE_INCLUDE_FILE TRACE_SYSTEM |
| 64 | # define UNDEF_TRACE_INCLUDE_FILE |
| 65 | #endif |
| 66 | |
| 67 | #ifndef TRACE_INCLUDE_PATH |
| 68 | # define __TRACE_INCLUDE(system) <trace/events/system.h> |
| 69 | # define UNDEF_TRACE_INCLUDE_PATH |
| 70 | #else |
| 71 | # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h) |
| 72 | #endif |
| 73 | |
| 74 | # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system) |
| 75 | |
| 76 | /* Let the trace headers be reread */ |
| 77 | #define TRACE_HEADER_MULTI_READ |
| 78 | |
| 79 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 80 | |
| 81 | /* Make all open coded DECLARE_TRACE nops */ |
| 82 | #undef DECLARE_TRACE |
| 83 | #define DECLARE_TRACE(name, proto, args) |
| 84 | |
| 85 | #ifdef CONFIG_EVENT_TRACING |
| 86 | #include <trace/ftrace.h> |
| 87 | #endif |
| 88 | |
| 89 | #undef TRACE_EVENT |
| 90 | #undef TRACE_EVENT_FN |
| 91 | #undef TRACE_EVENT_CONDITION |
| 92 | #undef DECLARE_EVENT_CLASS |
| 93 | #undef DEFINE_EVENT |
| 94 | #undef DEFINE_EVENT_PRINT |
| 95 | #undef DEFINE_EVENT_CONDITION |
| 96 | #undef TRACE_HEADER_MULTI_READ |
| 97 | #undef DECLARE_TRACE |
| 98 | |
| 99 | /* Only undef what we defined in this file */ |
| 100 | #ifdef UNDEF_TRACE_INCLUDE_FILE |
| 101 | # undef TRACE_INCLUDE_FILE |
| 102 | # undef UNDEF_TRACE_INCLUDE_FILE |
| 103 | #endif |
| 104 | |
| 105 | #ifdef UNDEF_TRACE_INCLUDE_PATH |
| 106 | # undef TRACE_INCLUDE_PATH |
| 107 | # undef UNDEF_TRACE_INCLUDE_PATH |
| 108 | #endif |
| 109 | |
| 110 | /* We may be processing more files */ |
| 111 | #define CREATE_TRACE_POINTS |
| 112 | |
| 113 | #endif /* CREATE_TRACE_POINTS */ |