diff options
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace.h | 4 | ||||
| -rw-r--r-- | kernel/trace/trace_export.c | 18 |
2 files changed, 20 insertions, 2 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 55c6ea00f28a..638476af8d7b 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -68,6 +68,10 @@ enum trace_type { #undef FTRACE_ENTRY_DUP #define FTRACE_ENTRY_DUP(name, name_struct, id, tstruct, printk) +#undef FTRACE_ENTRY_REG +#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, regfn) \ + FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print)) + #include "trace_entries.h" /* diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c index bbeec31e0ae3..f74de861cde9 100644 --- a/kernel/trace/trace_export.c +++ b/kernel/trace/trace_export.c @@ -18,6 +18,14 @@ #undef TRACE_SYSTEM #define TRACE_SYSTEM ftrace +/* + * The FTRACE_ENTRY_REG macro allows ftrace entry to define register + * function and thus become accesible via perf. + */ +#undef FTRACE_ENTRY_REG +#define FTRACE_ENTRY_REG(name, struct_name, id, tstruct, print, regfn) \ + FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print)) + /* not needed for this file */ #undef __field_struct #define __field_struct(type, item) @@ -152,13 +160,14 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \ #undef F_printk #define F_printk(fmt, args...) #fmt ", " __stringify(args) -#undef FTRACE_ENTRY -#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print) \ +#undef FTRACE_ENTRY_REG +#define FTRACE_ENTRY_REG(call, struct_name, etype, tstruct, print, regfn)\ \ struct ftrace_event_class event_class_ftrace_##call = { \ .system = __stringify(TRACE_SYSTEM), \ .define_fields = ftrace_define_fields_##call, \ .fields = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\ + .reg = regfn, \ }; \ \ struct ftrace_event_call __used event_##call = { \ @@ -170,4 +179,9 @@ struct ftrace_event_call __used event_##call = { \ struct ftrace_event_call __used \ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call; +#undef FTRACE_ENTRY +#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print) \ + FTRACE_ENTRY_REG(call, struct_name, etype, \ + PARAMS(tstruct), PARAMS(print), NULL) + #include "trace_entries.h" |