diff options
Diffstat (limited to 'include/trace/ftrace.h')
| -rw-r--r-- | include/trace/ftrace.h | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index 41bf65f04dd9..37d4b10b111d 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -18,6 +18,34 @@ #include <linux/ftrace_event.h> +#ifndef TRACE_SYSTEM_VAR +#define TRACE_SYSTEM_VAR TRACE_SYSTEM +#endif + +#define __app__(x, y) str__##x##y +#define __app(x, y) __app__(x, y) + +#define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) + +#define TRACE_MAKE_SYSTEM_STR() \ + static const char TRACE_SYSTEM_STRING[] = \ + __stringify(TRACE_SYSTEM) + +TRACE_MAKE_SYSTEM_STR(); + +#undef TRACE_DEFINE_ENUM +#define TRACE_DEFINE_ENUM(a) \ + static struct trace_enum_map __used __initdata \ + __##TRACE_SYSTEM##_##a = \ + { \ + .system = TRACE_SYSTEM_STRING, \ + .enum_string = #a, \ + .enum_value = a \ + }; \ + static struct trace_enum_map __used \ + __attribute__((section("_ftrace_enum_map"))) \ + *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a + /* * DECLARE_EVENT_CLASS can be used to add a generic function * handlers for events. That is, if all events have the same @@ -105,7 +133,6 @@ #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) - /* * Stage 2 of the trace events. * @@ -122,6 +149,9 @@ * The size of an array is also encoded, in the higher 16 bits of <item>. */ +#undef TRACE_DEFINE_ENUM +#define TRACE_DEFINE_ENUM(a) + #undef __field #define __field(type, item) @@ -539,7 +569,7 @@ static inline notrace int ftrace_get_offsets_##call( \ * .trace = ftrace_raw_output_<call>, <-- stage 2 * }; * - * static const char print_fmt_<call>[] = <TP_printk>; + * static char print_fmt_<call>[] = <TP_printk>; * * static struct ftrace_event_class __used event_class_<template> = { * .system = "<system>", @@ -690,9 +720,9 @@ static inline void ftrace_test_probe_##call(void) \ #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ _TRACE_PERF_PROTO(call, PARAMS(proto)); \ -static const char print_fmt_##call[] = print; \ +static char print_fmt_##call[] = print; \ static struct ftrace_event_class __used __refdata event_class_##call = { \ - .system = __stringify(TRACE_SYSTEM), \ + .system = TRACE_SYSTEM_STRING, \ .define_fields = ftrace_define_fields_##call, \ .fields = LIST_HEAD_INIT(event_class_##call.fields),\ .raw_init = trace_event_raw_init, \ @@ -719,7 +749,7 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ \ -static const char print_fmt_##call[] = print; \ +static char print_fmt_##call[] = print; \ \ static struct ftrace_event_call __used event_##call = { \ .class = &event_class_##template, \ @@ -735,6 +765,7 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) +#undef TRACE_SYSTEM_VAR #ifdef CONFIG_PERF_EVENTS |