diff options
Diffstat (limited to 'include/trace/ftrace.h')
| -rw-r--r-- | include/trace/ftrace.h | 199 |
1 files changed, 153 insertions, 46 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index 5c7ab17cbb0..26b4f2e1327 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -44,6 +44,12 @@ #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]; @@ -53,6 +59,9 @@ #undef __string #define __string(item, src) __dynamic_array(char, item, -1) +#undef __bitmask +#define __bitmask(item, nr_bits) __dynamic_array(char, item, -1) + #undef TP_STRUCT__entry #define TP_STRUCT__entry(args...) args @@ -90,6 +99,10 @@ #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) @@ -115,6 +128,12 @@ #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) @@ -124,6 +143,9 @@ #undef __string #define __string(item, src) __dynamic_array(char, item, -1) +#undef __bitmask +#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) + #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ struct ftrace_data_offsets_##call { \ @@ -140,6 +162,9 @@ #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) /* @@ -190,9 +215,22 @@ #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_bitmask +#define __get_bitmask(field) \ + ({ \ + void *__bitmask = __get_dynamic_array(field); \ + unsigned int __bitmask_size; \ + __bitmask_size = __get_dynamic_array_len(field); \ + ftrace_print_bitmask_seq(p, __bitmask, __bitmask_size); \ + }) + #undef __print_flags #define __print_flags(flag, delim, flag_array...) \ ({ \ @@ -258,11 +296,9 @@ static notrace enum print_line_t \ ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ struct trace_event *event) \ { \ - struct trace_seq *s = &iter->seq; \ struct ftrace_raw_##template *field; \ struct trace_entry *entry; \ struct trace_seq *p = &iter->tmp_seq; \ - int ret; \ \ entry = iter->ent; \ \ @@ -274,13 +310,7 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ field = (typeof(field))entry; \ \ trace_seq_init(p); \ - ret = trace_seq_printf(s, "%s: ", #call); \ - if (ret) \ - ret = trace_seq_printf(s, print); \ - if (!ret) \ - return TRACE_TYPE_PARTIAL_LINE; \ - \ - return TRACE_TYPE_HANDLED; \ + return ftrace_output_call(iter, #call, print); \ } \ static struct trace_event_functions ftrace_event_type_funcs_##call = { \ .trace = ftrace_raw_output_##call, \ @@ -297,21 +327,30 @@ static struct trace_event_functions ftrace_event_type_funcs_##call = { \ if (ret) \ return ret; +#undef __field_struct_ext +#define __field_struct_ext(type, item, filter_type) \ + ret = trace_define_field(event_call, #type, #item, \ + offsetof(typeof(field), item), \ + sizeof(field.item), \ + 0, filter_type); \ + if (ret) \ + return ret; + #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) \ do { \ - mutex_lock(&event_storage_mutex); \ + char *type_str = #type"["__stringify(len)"]"; \ 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, \ + ret = trace_define_field(event_call, type_str, #item, \ offsetof(typeof(field), item), \ sizeof(field.item), \ is_signed_type(type), FILTER_OTHER); \ - mutex_unlock(&event_storage_mutex); \ if (ret) \ return ret; \ } while (0); @@ -326,6 +365,9 @@ static struct trace_event_functions ftrace_event_type_funcs_##call = { \ #undef __string #define __string(item, src) __dynamic_array(char, item, -1) +#undef __bitmask +#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) + #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ static int notrace __init \ @@ -361,18 +403,49 @@ ftrace_define_fields_##call(struct ftrace_event_call *event_call) \ #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 |= (len * sizeof(type)) << 16; \ - __data_size += (len) * sizeof(type); + __data_offsets->item |= __item_length << 16; \ + __data_size += __item_length; #undef __string -#define __string(item, src) __dynamic_array(char, item, strlen(src) + 1) +#define __string(item, src) __dynamic_array(char, item, \ + strlen((src) ? (const char *)(src) : "(null)") + 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 DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ @@ -380,6 +453,7 @@ static inline notrace int ftrace_get_offsets_##call( \ struct ftrace_data_offsets_##call *__data_offsets, proto) \ { \ int __data_size = 0; \ + int __maybe_unused __item_length; \ struct ftrace_raw_##call __maybe_unused *entry; \ \ tstruct; \ @@ -410,6 +484,8 @@ static inline notrace int ftrace_get_offsets_##call( \ * struct ftrace_event_file *ftrace_file = __data; * struct ftrace_event_call *event_call = ftrace_file->event_call; * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; + * unsigned long eflags = ftrace_file->flags; + * enum event_trigger_type __tt = ETT_NONE; * struct ring_buffer_event *event; * struct ftrace_raw_<call> *entry; <-- defined in stage 1 * struct ring_buffer *buffer; @@ -417,9 +493,12 @@ static inline notrace int ftrace_get_offsets_##call( \ * int __data_size; * int pc; * - * if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT, - * &ftrace_file->flags)) - * return; + * if (!(eflags & FTRACE_EVENT_FL_TRIGGER_COND)) { + * if (eflags & FTRACE_EVENT_FL_TRIGGER_MODE) + * event_triggers_call(ftrace_file, NULL); + * if (eflags & FTRACE_EVENT_FL_SOFT_DISABLED) + * return; + * } * * local_save_flags(irq_flags); * pc = preempt_count(); @@ -437,9 +516,17 @@ static inline notrace int ftrace_get_offsets_##call( \ * { <assign>; } <-- Here we assign the entries by the __field and * __array macros. * - * if (!filter_current_check_discard(buffer, event_call, entry, event)) - * trace_nowake_buffer_unlock_commit(buffer, - * event, irq_flags, pc); + * if (eflags & FTRACE_EVENT_FL_TRIGGER_COND) + * __tt = event_triggers_call(ftrace_file, entry); + * + * if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT, + * &ftrace_file->flags)) + * ring_buffer_discard_commit(buffer, event); + * else if (!filter_check_discard(ftrace_file, entry, buffer, event)) + * trace_buffer_unlock_commit(buffer, event, irq_flags, pc); + * + * if (__tt) + * event_triggers_post_call(ftrace_file, __tt); * } * * static struct trace_event ftrace_event_type_<call> = { @@ -458,10 +545,13 @@ static inline notrace int ftrace_get_offsets_##call( \ * }; * * static struct ftrace_event_call event_<call> = { - * .name = "<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. @@ -490,6 +580,9 @@ static inline notrace int ftrace_get_offsets_##call( \ #undef __field #define __field(type, item) +#undef __field_struct +#define __field_struct(type, item) + #undef __array #define __array(type, item, len) @@ -498,11 +591,21 @@ static inline notrace int ftrace_get_offsets_##call( \ __entry->__data_loc_##item = __data_offsets.item; #undef __string -#define __string(item, src) __dynamic_array(char, item, -1) \ +#define __string(item, src) __dynamic_array(char, item, -1) #undef __assign_str #define __assign_str(dst, src) \ - strcpy(__get_str(dst), src); + strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)"); + +#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 TP_fast_assign #define TP_fast_assign(args...) args @@ -523,38 +626,27 @@ static notrace void \ ftrace_raw_event_##call(void *__data, proto) \ { \ struct ftrace_event_file *ftrace_file = __data; \ - struct ftrace_event_call *event_call = ftrace_file->event_call; \ struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ - struct ring_buffer_event *event; \ + struct ftrace_event_buffer fbuffer; \ struct ftrace_raw_##call *entry; \ - struct ring_buffer *buffer; \ - unsigned long irq_flags; \ int __data_size; \ - int pc; \ \ - if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT, \ - &ftrace_file->flags)) \ + if (ftrace_trigger_soft_disabled(ftrace_file)) \ return; \ \ - local_save_flags(irq_flags); \ - pc = preempt_count(); \ - \ __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ \ - event = trace_event_buffer_lock_reserve(&buffer, ftrace_file, \ - event_call->event.type, \ - sizeof(*entry) + __data_size, \ - irq_flags, pc); \ - if (!event) \ + entry = ftrace_event_buffer_reserve(&fbuffer, ftrace_file, \ + sizeof(*entry) + __data_size); \ + \ + if (!entry) \ return; \ - entry = ring_buffer_event_data(event); \ \ tstruct \ \ { assign; } \ \ - if (!filter_current_check_discard(buffer, event_call, entry, event)) \ - trace_buffer_unlock_commit(buffer, event, irq_flags, pc); \ + ftrace_event_buffer_commit(&fbuffer); \ } /* * The ftrace_test_probe is compiled out, it is only here as a build time check @@ -581,7 +673,9 @@ static inline void ftrace_test_probe_##call(void) \ #undef __print_symbolic #undef __print_hex #undef __get_dynamic_array +#undef __get_dynamic_array_len #undef __get_str +#undef __get_bitmask #undef TP_printk #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) @@ -604,10 +698,13 @@ static struct ftrace_event_class __used __refdata event_class_##call = { \ #define DEFINE_EVENT(template, call, proto, args) \ \ static struct ftrace_event_call __used event_##call = { \ - .name = #call, \ .class = &event_class_##template, \ + { \ + .tp = &__tracepoint_##call, \ + }, \ .event.funcs = &ftrace_event_type_funcs_##template, \ .print_fmt = print_fmt_##template, \ + .flags = TRACE_EVENT_FL_TRACEPOINT, \ }; \ static struct ftrace_event_call __used \ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call @@ -618,10 +715,13 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call static const char print_fmt_##call[] = print; \ \ static struct ftrace_event_call __used event_##call = { \ - .name = #call, \ .class = &event_class_##template, \ + { \ + .tp = &__tracepoint_##call, \ + }, \ .event.funcs = &ftrace_event_type_funcs_##call, \ .print_fmt = print_fmt_##call, \ + .flags = TRACE_EVENT_FL_TRACEPOINT, \ }; \ static struct ftrace_event_call __used \ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call @@ -638,9 +738,16 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #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_bitmask +#define __get_bitmask(field) (char *)__get_dynamic_array(field) + #undef __perf_addr #define __perf_addr(a) (__addr = (a)) |