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Edit File: trace_events.h

/* SPDX-License-Identifier: GPL-2.0 */ /* * Stage 1 of the trace events. * * Override the macros in the event tracepoint header <trace/events/XXX.h> * to include the following: * * struct trace_event_raw_<call> { * struct trace_entry ent; * <type> <item>; * <type2> <item2>[<len>]; * [...] * }; * * The <type> <item> is created by the __field(type, item) macro or * the __array(type2, item2, len) macro. * We simply do "type item;", and that will create the fields * in the structure. */ #include <linux/trace_events.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_eval_map __used __initdata \ __##TRACE_SYSTEM##_##a = \ { \ .system = TRACE_SYSTEM_STRING, \ .eval_string = #a, \ .eval_value = a \ }; \ static struct trace_eval_map __used \ __section("_ftrace_eval_map") \ *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a #undef TRACE_DEFINE_SIZEOF #define TRACE_DEFINE_SIZEOF(a) \ static struct trace_eval_map __used __initdata \ __##TRACE_SYSTEM##_##a = \ { \ .system = TRACE_SYSTEM_STRING, \ .eval_string = "sizeof(" #a ")", \ .eval_value = sizeof(a) \ }; \ static struct trace_eval_map __used \ __section("_ftrace_eval_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 * parameters and just have distinct trace points. * Each tracepoint can be defined with DEFINE_EVENT and that * will map the DECLARE_EVENT_CLASS to the tracepoint. * * TRACE_EVENT is a one to one mapping between tracepoint and template. */ #undef TRACE_EVENT #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ DECLARE_EVENT_CLASS(name, \ PARAMS(proto), \ PARAMS(args), \ PARAMS(tstruct), \ PARAMS(assign), \ PARAMS(print)); \ DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)); #undef __field #define __field(type, item) type item; #undef __field_ext #define __field_ext(type, item, filter_type) type item; #undef __field_struct #define __field_struct(type, item) type item; #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) type item; #undef __array #define __array(type, item, len) type item[len]; #undef __dynamic_array #define __dynamic_array(type, item, len) u32 __data_loc_##item; #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __string_len #define __string_len(item, src, len) __dynamic_array(char, item, -1) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(char, item, -1) #undef __sockaddr #define __sockaddr(field, len) __dynamic_array(u8, field, len) #undef __rel_dynamic_array #define __rel_dynamic_array(type, item, len) u32 __rel_loc_##item; #undef __rel_string #define __rel_string(item, src) __rel_dynamic_array(char, item, -1) #undef __rel_string_len #define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, -1) #undef __rel_bitmask #define __rel_bitmask(item, nr_bits) __rel_dynamic_array(char, item, -1) #undef __rel_sockaddr #define __rel_sockaddr(field, len) __rel_dynamic_array(u8, field, len) #undef TP_STRUCT__entry #define TP_STRUCT__entry(args...) args #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ struct trace_event_raw_##name { \ struct trace_entry ent; \ tstruct \ char __data[]; \ }; \ \ static struct trace_event_class event_class_##name; #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) \ static struct trace_event_call __used \ __attribute__((__aligned__(4))) event_##name #undef DEFINE_EVENT_FN #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) /* Callbacks are meaningless to ftrace. */ #undef TRACE_EVENT_FN #define TRACE_EVENT_FN(name, proto, args, tstruct, \ assign, print, reg, unreg) \ TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ #undef TRACE_EVENT_FN_COND #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \ assign, print, reg, unreg) \ TRACE_EVENT_CONDITION(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ #undef TRACE_EVENT_FLAGS #define TRACE_EVENT_FLAGS(name, value) \ __TRACE_EVENT_FLAGS(name, value) #undef TRACE_EVENT_PERF_PERM #define TRACE_EVENT_PERF_PERM(name, expr...) \ __TRACE_EVENT_PERF_PERM(name, expr) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 2 of the trace events. * * Include the following: * * struct trace_event_data_offsets_<call> { * u32 <item1>; * u32 <item2>; * [...] * }; * * The __dynamic_array() macro will create each u32 <item>, this is * to keep the offset of each array from the beginning of the event. * 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 TRACE_DEFINE_SIZEOF #define TRACE_DEFINE_SIZEOF(a) #undef __field #define __field(type, item) #undef __field_ext #define __field_ext(type, item, filter_type) #undef __field_struct #define __field_struct(type, item) #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) #undef __array #define __array(type, item, len) #undef __dynamic_array #define __dynamic_array(type, item, len) u32 item; #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __string_len #define __string_len(item, src, len) __dynamic_array(char, item, -1) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) #undef __sockaddr #define __sockaddr(field, len) __dynamic_array(u8, field, len) #undef __rel_dynamic_array #define __rel_dynamic_array(type, item, len) u32 item; #undef __rel_string #define __rel_string(item, src) __rel_dynamic_array(char, item, -1) #undef __rel_string_len #define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, -1) #undef __rel_bitmask #define __rel_bitmask(item, nr_bits) __rel_dynamic_array(unsigned long, item, -1) #undef __rel_sockaddr #define __rel_sockaddr(field, len) __rel_dynamic_array(u8, field, len) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ struct trace_event_data_offsets_##call { \ tstruct; \ }; #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) #undef TRACE_EVENT_FLAGS #define TRACE_EVENT_FLAGS(event, flag) #undef TRACE_EVENT_PERF_PERM #define TRACE_EVENT_PERF_PERM(event, expr...) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 3 of the trace events. * * Override the macros in the event tracepoint header <trace/events/XXX.h> * to include the following: * * enum print_line_t * trace_raw_output_<call>(struct trace_iterator *iter, int flags) * { * struct trace_seq *s = &iter->seq; * struct trace_event_raw_<call> *field; <-- defined in stage 1 * struct trace_seq *p = &iter->tmp_seq; * * -------(for event)------- * * struct trace_entry *entry; * * entry = iter->ent; * * if (entry->type != event_<call>->event.type) { * WARN_ON_ONCE(1); * return TRACE_TYPE_UNHANDLED; * } * * field = (typeof(field))entry; * * trace_seq_init(p); * return trace_output_call(iter, <call>, <TP_printk> "\n"); * * ------(or, for event class)------ * * int ret; * * field = (typeof(field))iter->ent; * * ret = trace_raw_output_prep(iter, trace_event); * if (ret != TRACE_TYPE_HANDLED) * return ret; * * trace_event_printf(iter, <TP_printk> "\n"); * * return trace_handle_return(s); * ------- * } * * This is the method used to print the raw event to the trace * output format. Note, this is not needed if the data is read * in binary. */ #undef __entry #define __entry field #undef TP_printk #define TP_printk(fmt, args...) fmt "\n", args #undef __get_dynamic_array #define __get_dynamic_array(field) \ ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) #undef __get_dynamic_array_len #define __get_dynamic_array_len(field) \ ((__entry->__data_loc_##field >> 16) & 0xffff) #undef __get_str #define __get_str(field) ((char *)__get_dynamic_array(field)) #undef __get_rel_dynamic_array #define __get_rel_dynamic_array(field) \ ((void *)__entry + \ offsetof(typeof(*__entry), __rel_loc_##field) + \ sizeof(__entry->__rel_loc_##field) + \ (__entry->__rel_loc_##field & 0xffff)) #undef __get_rel_dynamic_array_len #define __get_rel_dynamic_array_len(field) \ ((__entry->__rel_loc_##field >> 16) & 0xffff) #undef __get_rel_str #define __get_rel_str(field) ((char *)__get_rel_dynamic_array(field)) #undef __get_bitmask #define __get_bitmask(field) \ ({ \ void *__bitmask = __get_dynamic_array(field); \ unsigned int __bitmask_size; \ __bitmask_size = __get_dynamic_array_len(field); \ trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \ }) #undef __get_rel_bitmask #define __get_rel_bitmask(field) \ ({ \ void *__bitmask = __get_rel_dynamic_array(field); \ unsigned int __bitmask_size; \ __bitmask_size = __get_rel_dynamic_array_len(field); \ trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \ }) #undef __get_sockaddr #define __get_sockaddr(field) ((struct sockaddr *)__get_dynamic_array(field)) #undef __get_rel_sockaddr #define __get_rel_sockaddr(field) ((struct sockaddr *)__get_rel_dynamic_array(field)) #undef __print_flags #define __print_flags(flag, delim, flag_array...) \ ({ \ static const struct trace_print_flags __flags[] = \ { flag_array, { -1, NULL }}; \ trace_print_flags_seq(p, delim, flag, __flags); \ }) #undef __print_symbolic #define __print_symbolic(value, symbol_array...) \ ({ \ static const struct trace_print_flags symbols[] = \ { symbol_array, { -1, NULL }}; \ trace_print_symbols_seq(p, value, symbols); \ }) #undef __print_flags_u64 #undef __print_symbolic_u64 #if BITS_PER_LONG == 32 #define __print_flags_u64(flag, delim, flag_array...) \ ({ \ static const struct trace_print_flags_u64 __flags[] = \ { flag_array, { -1, NULL } }; \ trace_print_flags_seq_u64(p, delim, flag, __flags); \ }) #define __print_symbolic_u64(value, symbol_array...) \ ({ \ static const struct trace_print_flags_u64 symbols[] = \ { symbol_array, { -1, NULL } }; \ trace_print_symbols_seq_u64(p, value, symbols); \ }) #else #define __print_flags_u64(flag, delim, flag_array...) \ __print_flags(flag, delim, flag_array) #define __print_symbolic_u64(value, symbol_array...) \ __print_symbolic(value, symbol_array) #endif #undef __print_hex #define __print_hex(buf, buf_len) \ trace_print_hex_seq(p, buf, buf_len, false) #undef __print_hex_str #define __print_hex_str(buf, buf_len) \ trace_print_hex_seq(p, buf, buf_len, true) #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); \ trace_print_array_seq(p, array, count, el_size); \ }) #undef __print_hex_dump #define __print_hex_dump(prefix_str, prefix_type, \ rowsize, groupsize, buf, len, ascii) \ trace_print_hex_dump_seq(p, prefix_str, prefix_type, \ rowsize, groupsize, buf, len, ascii) #undef __print_ns_to_secs #define __print_ns_to_secs(value) \ ({ \ u64 ____val = (u64)(value); \ do_div(____val, NSEC_PER_SEC); \ ____val; \ }) #undef __print_ns_without_secs #define __print_ns_without_secs(value) \ ({ \ u64 ____val = (u64)(value); \ (u32) do_div(____val, NSEC_PER_SEC); \ }) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ static notrace enum print_line_t \ trace_raw_output_##call(struct trace_iterator *iter, int flags, \ struct trace_event *trace_event) \ { \ struct trace_seq *s = &iter->seq; \ struct trace_seq __maybe_unused *p = &iter->tmp_seq; \ struct trace_event_raw_##call *field; \ int ret; \ \ field = (typeof(field))iter->ent; \ \ ret = trace_raw_output_prep(iter, trace_event); \ if (ret != TRACE_TYPE_HANDLED) \ return ret; \ \ trace_event_printf(iter, print); \ \ return trace_handle_return(s); \ } \ static struct trace_event_functions trace_event_type_funcs_##call = { \ .trace = trace_raw_output_##call, \ }; #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ static notrace enum print_line_t \ trace_raw_output_##call(struct trace_iterator *iter, int flags, \ struct trace_event *event) \ { \ struct trace_event_raw_##template *field; \ struct trace_entry *entry; \ struct trace_seq *p = &iter->tmp_seq; \ \ entry = iter->ent; \ \ if (entry->type != event_##call.event.type) { \ WARN_ON_ONCE(1); \ return TRACE_TYPE_UNHANDLED; \ } \ \ field = (typeof(field))entry; \ \ trace_seq_init(p); \ return trace_output_call(iter, #call, print); \ } \ static struct trace_event_functions trace_event_type_funcs_##call = { \ .trace = trace_raw_output_##call, \ }; #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) #define ALIGN_STRUCTFIELD(type) ((int)(__alignof__(struct {type b;}))) #undef __field_ext #define __field_ext(_type, _item, _filter_type) { \ .type = #_type, .name = #_item, \ .size = sizeof(_type), .align = ALIGN_STRUCTFIELD(_type), \ .is_signed = is_signed_type(_type), .filter_type = _filter_type }, #undef __field_struct_ext #define __field_struct_ext(_type, _item, _filter_type) { \ .type = #_type, .name = #_item, \ .size = sizeof(_type), .align = ALIGN_STRUCTFIELD(_type), \ 0, .filter_type = _filter_type }, #undef __field #define __field(type, item) __field_ext(type, item, FILTER_OTHER) #undef __field_struct #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER) #undef __array #define __array(_type, _item, _len) { \ .type = #_type"["__stringify(_len)"]", .name = #_item, \ .size = sizeof(_type[_len]), .align = ALIGN_STRUCTFIELD(_type), \ .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER }, #undef __dynamic_array #define __dynamic_array(_type, _item, _len) { \ .type = "__data_loc " #_type "[]", .name = #_item, \ .size = 4, .align = 4, \ .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER }, #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __string_len #define __string_len(item, src, len) __dynamic_array(char, item, -1) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) #undef __sockaddr #define __sockaddr(field, len) __dynamic_array(u8, field, len) #undef __rel_dynamic_array #define __rel_dynamic_array(_type, _item, _len) { \ .type = "__rel_loc " #_type "[]", .name = #_item, \ .size = 4, .align = 4, \ .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER }, #undef __rel_string #define __rel_string(item, src) __rel_dynamic_array(char, item, -1) #undef __rel_string_len #define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, -1) #undef __rel_bitmask #define __rel_bitmask(item, nr_bits) __rel_dynamic_array(unsigned long, item, -1) #undef __rel_sockaddr #define __rel_sockaddr(field, len) __rel_dynamic_array(u8, field, len) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ static struct trace_event_fields trace_event_fields_##call[] = { \ tstruct \ {} }; #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * remember the offset of each array from the beginning of the event. */ #undef __entry #define __entry entry #undef __field #define __field(type, item) #undef __field_ext #define __field_ext(type, item, filter_type) #undef __field_struct #define __field_struct(type, item) #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) #undef __array #define __array(type, item, len) #undef __dynamic_array #define __dynamic_array(type, item, len) \ __item_length = (len) * sizeof(type); \ __data_offsets->item = __data_size + \ offsetof(typeof(*entry), __data); \ __data_offsets->item |= __item_length << 16; \ __data_size += __item_length; #undef __string #define __string(item, src) __dynamic_array(char, item, \ strlen((src) ? (const char *)(src) : "(null)") + 1) #undef __string_len #define __string_len(item, src, len) __dynamic_array(char, item, (len) + 1) #undef __rel_dynamic_array #define __rel_dynamic_array(type, item, len) \ __item_length = (len) * sizeof(type); \ __data_offsets->item = __data_size + \ offsetof(typeof(*entry), __data) - \ offsetof(typeof(*entry), __rel_loc_##item) - \ sizeof(u32); \ __data_offsets->item |= __item_length << 16; \ __data_size += __item_length; #undef __rel_string #define __rel_string(item, src) __rel_dynamic_array(char, item, \ strlen((src) ? (const char *)(src) : "(null)") + 1) #undef __rel_string_len #define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, (len) + 1) /* * __bitmask_size_in_bytes_raw is the number of bytes needed to hold * num_possible_cpus(). */ #define __bitmask_size_in_bytes_raw(nr_bits) \ (((nr_bits) + 7) / 8) #define __bitmask_size_in_longs(nr_bits) \ ((__bitmask_size_in_bytes_raw(nr_bits) + \ ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8)) /* * __bitmask_size_in_bytes is the number of bytes needed to hold * num_possible_cpus() padded out to the nearest long. This is what * is saved in the buffer, just to be consistent. */ #define __bitmask_size_in_bytes(nr_bits) \ (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8)) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \ __bitmask_size_in_longs(nr_bits)) #undef __rel_bitmask #define __rel_bitmask(item, nr_bits) __rel_dynamic_array(unsigned long, item, \ __bitmask_size_in_longs(nr_bits)) #undef __sockaddr #define __sockaddr(field, len) __dynamic_array(u8, field, len) #undef __rel_sockaddr #define __rel_sockaddr(field, len) __rel_dynamic_array(u8, field, len) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ static inline notrace int trace_event_get_offsets_##call( \ struct trace_event_data_offsets_##call *__data_offsets, proto) \ { \ int __data_size = 0; \ int __maybe_unused __item_length; \ struct trace_event_raw_##call __maybe_unused *entry; \ \ tstruct; \ \ return __data_size; \ } #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 4 of the trace events. * * Override the macros in the event tracepoint header <trace/events/XXX.h> * to include the following: * * For those macros defined with TRACE_EVENT: * * static struct trace_event_call event_<call>; * * static void trace_event_raw_event_<call>(void *__data, proto) * { * struct trace_event_file *trace_file = __data; * struct trace_event_call *event_call = trace_file->event_call; * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets; * unsigned long eflags = trace_file->flags; * enum event_trigger_type __tt = ETT_NONE; * struct ring_buffer_event *event; * struct trace_event_raw_<call> *entry; <-- defined in stage 1 * struct trace_buffer *buffer; * unsigned long irq_flags; * int __data_size; * int pc; * * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) { * if (eflags & EVENT_FILE_FL_TRIGGER_MODE) * event_triggers_call(trace_file, NULL); * if (eflags & EVENT_FILE_FL_SOFT_DISABLED) * return; * } * * local_save_flags(irq_flags); * pc = preempt_count(); * * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args); * * event = trace_event_buffer_lock_reserve(&buffer, trace_file, * event_<call>->event.type, * sizeof(*entry) + __data_size, * irq_flags, pc); * if (!event) * return; * entry = ring_buffer_event_data(event); * * { <assign>; } <-- Here we assign the entries by the __field and * __array macros. * * if (eflags & EVENT_FILE_FL_TRIGGER_COND) * __tt = event_triggers_call(trace_file, entry); * * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT, * &trace_file->flags)) * ring_buffer_discard_commit(buffer, event); * else if (!filter_check_discard(trace_file, entry, buffer, event)) * trace_buffer_unlock_commit(buffer, event, irq_flags, pc); * * if (__tt) * event_triggers_post_call(trace_file, __tt); * } * * static struct trace_event ftrace_event_type_<call> = { * .trace = trace_raw_output_<call>, <-- stage 2 * }; * * static char print_fmt_<call>[] = <TP_printk>; * * static struct trace_event_class __used event_class_<template> = { * .system = "<system>", * .fields_array = trace_event_fields_<call>, * .fields = LIST_HEAD_INIT(event_class_##call.fields), * .raw_init = trace_event_raw_init, * .probe = trace_event_raw_event_##call, * .reg = trace_event_reg, * }; * * static struct trace_event_call event_<call> = { * .class = event_class_<template>, * { * .tp = &__tracepoint_<call>, * }, * .event = &ftrace_event_type_<call>, * .print_fmt = print_fmt_<call>, * .flags = TRACE_EVENT_FL_TRACEPOINT, * }; * // its only safe to use pointers when doing linker tricks to * // create an array. * static struct trace_event_call __used * __section("_ftrace_events") *__event_<call> = &event_<call>; * */ #ifdef CONFIG_PERF_EVENTS #define _TRACE_PERF_PROTO(call, proto) \ static notrace void \ perf_trace_##call(void *__data, proto); #define _TRACE_PERF_INIT(call) \ .perf_probe = perf_trace_##call, #else #define _TRACE_PERF_PROTO(call, proto) #define _TRACE_PERF_INIT(call) #endif /* CONFIG_PERF_EVENTS */ #undef __entry #define __entry entry #undef __field #define __field(type, item) #undef __field_struct #define __field_struct(type, item) #undef __array #define __array(type, item, len) #undef __dynamic_array #define __dynamic_array(type, item, len) \ __entry->__data_loc_##item = __data_offsets.item; #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __string_len #define __string_len(item, src, len) __dynamic_array(char, item, -1) #undef __assign_str #define __assign_str(dst, src) \ strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)"); #undef __assign_str_len #define __assign_str_len(dst, src, len) \ do { \ memcpy(__get_str(dst), (src), (len)); \ __get_str(dst)[len] = '\0'; \ } while(0) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) #undef __get_bitmask #define __get_bitmask(field) (char *)__get_dynamic_array(field) #undef __assign_bitmask #define __assign_bitmask(dst, src, nr_bits) \ memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits)) #undef __sockaddr #define __sockaddr(field, len) __dynamic_array(u8, field, len) #undef __get_sockaddr #define __get_sockaddr(field) ((struct sockaddr *)__get_dynamic_array(field)) #define __assign_sockaddr(dest, src, len) \ memcpy(__get_dynamic_array(dest), src, len) #undef __rel_dynamic_array #define __rel_dynamic_array(type, item, len) \ __entry->__rel_loc_##item = __data_offsets.item; #undef __rel_string #define __rel_string(item, src) __rel_dynamic_array(char, item, -1) #undef __rel_string_len #define __rel_string_len(item, src, len) __rel_dynamic_array(char, item, -1) #undef __assign_rel_str #define __assign_rel_str(dst, src) \ strcpy(__get_rel_str(dst), (src) ? (const char *)(src) : "(null)"); #undef __assign_rel_str_len #define __assign_rel_str_len(dst, src, len) \ do { \ memcpy(__get_rel_str(dst), (src), (len)); \ __get_rel_str(dst)[len] = '\0'; \ } while (0) #undef __rel_bitmask #define __rel_bitmask(item, nr_bits) __rel_dynamic_array(unsigned long, item, -1) #undef __get_rel_bitmask #define __get_rel_bitmask(field) (char *)__get_rel_dynamic_array(field) #undef __assign_rel_bitmask #define __assign_rel_bitmask(dst, src, nr_bits) \ memcpy(__get_rel_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits)) #undef __rel_sockaddr #define __rel_sockaddr(field, len) __rel_dynamic_array(u8, field, len) #undef __get_rel_sockaddr #define __get_rel_sockaddr(field) ((struct sockaddr *)__get_rel_dynamic_array(field)) #define __assign_rel_sockaddr(dest, src, len) \ memcpy(__get_rel_dynamic_array(dest), src, len) #undef TP_fast_assign #define TP_fast_assign(args...) args #undef __perf_count #define __perf_count(c) (c) #undef __perf_task #define __perf_task(t) (t) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ \ static notrace void \ trace_event_raw_event_##call(void *__data, proto) \ { \ struct trace_event_file *trace_file = __data; \ struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ struct trace_event_buffer fbuffer; \ struct trace_event_raw_##call *entry; \ int __data_size; \ \ if (trace_trigger_soft_disabled(trace_file)) \ return; \ \ __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ \ entry = trace_event_buffer_reserve(&fbuffer, trace_file, \ sizeof(*entry) + __data_size); \ \ if (!entry) \ return; \ \ tstruct \ \ { assign; } \ \ trace_event_buffer_commit(&fbuffer); \ } /* * The ftrace_test_probe is compiled out, it is only here as a build time check * to make sure that if the tracepoint handling changes, the ftrace probe will * fail to compile unless it too is updated. */ #undef DEFINE_EVENT #define DEFINE_EVENT(template, call, proto, args) \ static inline void ftrace_test_probe_##call(void) \ { \ check_trace_callback_type_##call(trace_event_raw_event_##template); \ } #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) #undef __entry #define __entry REC #undef __print_flags #undef __print_symbolic #undef __print_hex #undef __print_hex_str #undef __get_dynamic_array #undef __get_dynamic_array_len #undef __get_str #undef __get_bitmask #undef __get_sockaddr #undef __get_rel_dynamic_array #undef __get_rel_dynamic_array_len #undef __get_rel_str #undef __get_rel_bitmask #undef __get_rel_sockaddr #undef __print_array #undef __print_hex_dump /* * The below is not executed in the kernel. It is only what is * displayed in the print format for userspace to parse. */ #undef __print_ns_to_secs #define __print_ns_to_secs(val) (val) / 1000000000UL #undef __print_ns_without_secs #define __print_ns_without_secs(val) (val) % 1000000000UL #undef TP_printk #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ _TRACE_PERF_PROTO(call, PARAMS(proto)); \ static char print_fmt_##call[] = print; \ static struct trace_event_class __used __refdata event_class_##call = { \ .system = TRACE_SYSTEM_STRING, \ .fields_array = trace_event_fields_##call, \ .fields = LIST_HEAD_INIT(event_class_##call.fields),\ .raw_init = trace_event_raw_init, \ .probe = trace_event_raw_event_##call, \ .reg = trace_event_reg, \ _TRACE_PERF_INIT(call) \ }; #undef DEFINE_EVENT #define DEFINE_EVENT(template, call, proto, args) \ \ static struct trace_event_call __used event_##call = { \ .class = &event_class_##template, \ { \ .tp = &__tracepoint_##call, \ }, \ .event.funcs = &trace_event_type_funcs_##template, \ .print_fmt = print_fmt_##template, \ .flags = TRACE_EVENT_FL_TRACEPOINT, \ }; \ static struct trace_event_call __used \ __section("_ftrace_events") *__event_##call = &event_##call #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ \ static char print_fmt_##call[] = print; \ \ static struct trace_event_call __used event_##call = { \ .class = &event_class_##template, \ { \ .tp = &__tracepoint_##call, \ }, \ .event.funcs = &trace_event_type_funcs_##call, \ .print_fmt = print_fmt_##call, \ .flags = TRACE_EVENT_FL_TRACEPOINT, \ }; \ static struct trace_event_call __used \ __section("_ftrace_events") *__event_##call = &event_##call #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)