diff options
Diffstat (limited to 'include/trace/ftrace.h')
| -rw-r--r-- | include/trace/ftrace.h | 65 |
1 files changed, 52 insertions, 13 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index 26b4f2e13275..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) @@ -263,6 +293,14 @@ #undef __print_hex #define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len) +#undef __print_array +#define __print_array(array, count, el_size) \ + ({ \ + BUILD_BUG_ON(el_size != 1 && el_size != 2 && \ + el_size != 4 && el_size != 8); \ + ftrace_print_array_seq(p, array, count, el_size); \ + }) + #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ static notrace enum print_line_t \ @@ -277,14 +315,12 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ field = (typeof(field))iter->ent; \ \ ret = ftrace_raw_output_prep(iter, trace_event); \ - if (ret) \ + if (ret != TRACE_TYPE_HANDLED) \ return ret; \ \ - ret = trace_seq_printf(s, print); \ - if (!ret) \ - return TRACE_TYPE_PARTIAL_LINE; \ + trace_seq_printf(s, print); \ \ - return TRACE_TYPE_HANDLED; \ + return trace_handle_return(s); \ } \ static struct trace_event_functions ftrace_event_type_funcs_##call = { \ .trace = ftrace_raw_output_##call, \ @@ -533,7 +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>", @@ -676,6 +712,7 @@ static inline void ftrace_test_probe_##call(void) \ #undef __get_dynamic_array_len #undef __get_str #undef __get_bitmask +#undef __print_array #undef TP_printk #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) @@ -683,9 +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, \ @@ -712,7 +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, \ @@ -728,6 +765,7 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) +#undef TRACE_SYSTEM_VAR #ifdef CONFIG_PERF_EVENTS @@ -765,7 +803,7 @@ perf_trace_##call(void *__data, proto) \ struct ftrace_event_call *event_call = __data; \ struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ struct ftrace_raw_##call *entry; \ - struct pt_regs __regs; \ + struct pt_regs *__regs; \ u64 __addr = 0, __count = 1; \ struct task_struct *__task = NULL; \ struct hlist_head *head; \ @@ -784,18 +822,19 @@ perf_trace_##call(void *__data, proto) \ sizeof(u64)); \ __entry_size -= sizeof(u32); \ \ - perf_fetch_caller_regs(&__regs); \ entry = perf_trace_buf_prepare(__entry_size, \ event_call->event.type, &__regs, &rctx); \ if (!entry) \ return; \ \ + perf_fetch_caller_regs(__regs); \ + \ tstruct \ \ { assign; } \ \ perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \ - __count, &__regs, head, __task); \ + __count, __regs, head, __task); \ } /* |