diff options
Diffstat (limited to 'include/trace/ftrace.h')
| -rw-r--r-- | include/trace/ftrace.h | 45 |
1 files changed, 30 insertions, 15 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index a9377c0083a..3e68366d485 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -82,6 +82,10 @@ TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ +#undef TRACE_EVENT_FLAGS +#define TRACE_EVENT_FLAGS(name, value) \ + __TRACE_EVENT_FLAGS(name, value) + #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) @@ -129,6 +133,9 @@ #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) +#undef TRACE_EVENT_FLAGS +#define TRACE_EVENT_FLAGS(event, flag) + #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* @@ -289,13 +296,19 @@ static struct trace_event_functions ftrace_event_type_funcs_##call = { \ #undef __array #define __array(type, item, len) \ - BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ - ret = trace_define_field(event_call, #type "[" #len "]", #item, \ + do { \ + mutex_lock(&event_storage_mutex); \ + BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ + snprintf(event_storage, sizeof(event_storage), \ + "%s[%d]", #type, len); \ + ret = trace_define_field(event_call, event_storage, #item, \ offsetof(typeof(field), item), \ sizeof(field.item), \ is_signed_type(type), FILTER_OTHER); \ - if (ret) \ - return ret; + mutex_unlock(&event_storage_mutex); \ + if (ret) \ + return ret; \ + } while (0); #undef __dynamic_array #define __dynamic_array(type, item, len) \ @@ -433,14 +446,16 @@ static inline notrace int ftrace_get_offsets_##call( \ * .reg = ftrace_event_reg, * }; * - * static struct ftrace_event_call __used - * __attribute__((__aligned__(4))) - * __attribute__((section("_ftrace_events"))) event_<call> = { + * static struct ftrace_event_call event_<call> = { * .name = "<call>", * .class = event_class_<template>, * .event = &ftrace_event_type_<call>, * .print_fmt = print_fmt_<call>, * }; + * // its only safe to use pointers when doing linker tricks to + * // create an array. + * static struct ftrace_event_call __used + * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>; * */ @@ -566,28 +581,28 @@ static struct ftrace_event_class __used event_class_##call = { \ #undef DEFINE_EVENT #define DEFINE_EVENT(template, call, proto, args) \ \ -static struct ftrace_event_call __used \ -__attribute__((__aligned__(4))) \ -__attribute__((section("_ftrace_events"))) event_##call = { \ +static struct ftrace_event_call __used event_##call = { \ .name = #call, \ .class = &event_class_##template, \ .event.funcs = &ftrace_event_type_funcs_##template, \ .print_fmt = print_fmt_##template, \ -}; +}; \ +static struct ftrace_event_call __used \ +__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 struct ftrace_event_call __used \ -__attribute__((__aligned__(4))) \ -__attribute__((section("_ftrace_events"))) event_##call = { \ +static struct ftrace_event_call __used event_##call = { \ .name = #call, \ .class = &event_class_##template, \ .event.funcs = &ftrace_event_type_funcs_##call, \ .print_fmt = print_fmt_##call, \ -} +}; \ +static struct ftrace_event_call __used \ +__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |