4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation;
8 * version 2.1 of the License (not later!)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, see <http://www.gnu.org/licenses>
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20 #ifndef _PARSE_EVENTS_H
21 #define _PARSE_EVENTS_H
29 #include "trace-seq.h"
31 #ifndef __maybe_unused
32 #define __maybe_unused __attribute__((unused))
36 #define DEBUG_RECORD 0
40 unsigned long long ts;
41 unsigned long long offset;
42 long long missed_events; /* buffer dropped events before */
43 int record_size; /* size of binary record */
44 int size; /* size of data */
48 int locked; /* Do not free, even if ref_count is zero */
51 struct tep_record *prev;
52 struct tep_record *next;
57 /* ----------------------- tep ----------------------- */
62 typedef int (*tep_event_handler_func)(struct trace_seq *s,
63 struct tep_record *record,
64 struct tep_event *event,
67 typedef int (*tep_plugin_load_func)(struct tep_handle *pevent);
68 typedef int (*tep_plugin_unload_func)(struct tep_handle *pevent);
70 struct tep_plugin_option {
71 struct tep_plugin_option *next;
83 * Plugin hooks that can be called:
85 * TEP_PLUGIN_LOADER: (required)
86 * The function name to initialized the plugin.
88 * int TEP_PLUGIN_LOADER(struct tep_handle *pevent)
90 * TEP_PLUGIN_UNLOADER: (optional)
91 * The function called just before unloading
93 * int TEP_PLUGIN_UNLOADER(struct tep_handle *pevent)
95 * TEP_PLUGIN_OPTIONS: (optional)
96 * Plugin options that can be set before loading
98 * struct tep_plugin_option TEP_PLUGIN_OPTIONS[] = {
100 * .name = "option-name",
101 * .plugin_alias = "override-file-name", (optional)
102 * .description = "description of option to show users",
109 * Array must end with .name = NULL;
112 * .plugin_alias is used to give a shorter name to access
113 * the vairable. Useful if a plugin handles more than one event.
115 * If .value is not set, then it is considered a boolean and only
116 * .set will be processed. If .value is defined, then it is considered
117 * a string option and .set will be ignored.
119 * TEP_PLUGIN_ALIAS: (optional)
120 * The name to use for finding options (uses filename if not defined)
122 #define TEP_PLUGIN_LOADER tep_plugin_loader
123 #define TEP_PLUGIN_UNLOADER tep_plugin_unloader
124 #define TEP_PLUGIN_OPTIONS tep_plugin_options
125 #define TEP_PLUGIN_ALIAS tep_plugin_alias
126 #define _MAKE_STR(x) #x
127 #define MAKE_STR(x) _MAKE_STR(x)
128 #define TEP_PLUGIN_LOADER_NAME MAKE_STR(TEP_PLUGIN_LOADER)
129 #define TEP_PLUGIN_UNLOADER_NAME MAKE_STR(TEP_PLUGIN_UNLOADER)
130 #define TEP_PLUGIN_OPTIONS_NAME MAKE_STR(TEP_PLUGIN_OPTIONS)
131 #define TEP_PLUGIN_ALIAS_NAME MAKE_STR(TEP_PLUGIN_ALIAS)
133 enum tep_format_flags {
134 TEP_FIELD_IS_ARRAY = 1,
135 TEP_FIELD_IS_POINTER = 2,
136 TEP_FIELD_IS_SIGNED = 4,
137 TEP_FIELD_IS_STRING = 8,
138 TEP_FIELD_IS_DYNAMIC = 16,
139 TEP_FIELD_IS_LONG = 32,
140 TEP_FIELD_IS_FLAG = 64,
141 TEP_FIELD_IS_SYMBOLIC = 128,
144 struct tep_format_field {
145 struct tep_format_field *next;
146 struct tep_event *event;
152 unsigned int arraylen;
153 unsigned int elementsize;
160 struct tep_format_field *common_fields;
161 struct tep_format_field *fields;
164 struct tep_print_arg_atom {
168 struct tep_print_arg_string {
173 struct tep_print_arg_bitmask {
178 struct tep_print_arg_field {
180 struct tep_format_field *field;
183 struct tep_print_flag_sym {
184 struct tep_print_flag_sym *next;
189 struct tep_print_arg_typecast {
191 struct tep_print_arg *item;
194 struct tep_print_arg_flags {
195 struct tep_print_arg *field;
197 struct tep_print_flag_sym *flags;
200 struct tep_print_arg_symbol {
201 struct tep_print_arg *field;
202 struct tep_print_flag_sym *symbols;
205 struct tep_print_arg_hex {
206 struct tep_print_arg *field;
207 struct tep_print_arg *size;
210 struct tep_print_arg_int_array {
211 struct tep_print_arg *field;
212 struct tep_print_arg *count;
213 struct tep_print_arg *el_size;
216 struct tep_print_arg_dynarray {
217 struct tep_format_field *field;
218 struct tep_print_arg *index;
221 struct tep_print_arg;
223 struct tep_print_arg_op {
226 struct tep_print_arg *left;
227 struct tep_print_arg *right;
230 struct tep_function_handler;
232 struct tep_print_arg_func {
233 struct tep_function_handler *func;
234 struct tep_print_arg *args;
237 enum tep_print_arg_type {
248 TEP_PRINT_DYNAMIC_ARRAY,
252 TEP_PRINT_DYNAMIC_ARRAY_LEN,
256 struct tep_print_arg {
257 struct tep_print_arg *next;
258 enum tep_print_arg_type type;
260 struct tep_print_arg_atom atom;
261 struct tep_print_arg_field field;
262 struct tep_print_arg_typecast typecast;
263 struct tep_print_arg_flags flags;
264 struct tep_print_arg_symbol symbol;
265 struct tep_print_arg_hex hex;
266 struct tep_print_arg_int_array int_array;
267 struct tep_print_arg_func func;
268 struct tep_print_arg_string string;
269 struct tep_print_arg_bitmask bitmask;
270 struct tep_print_arg_op op;
271 struct tep_print_arg_dynarray dynarray;
275 struct tep_print_fmt {
277 struct tep_print_arg *args;
281 struct tep_handle *pevent;
285 struct tep_format format;
286 struct tep_print_fmt print_fmt;
288 tep_event_handler_func handler;
293 TEP_EVENT_FL_ISFTRACE = 0x01,
294 TEP_EVENT_FL_ISPRINT = 0x02,
295 TEP_EVENT_FL_ISBPRINT = 0x04,
296 TEP_EVENT_FL_ISFUNCENT = 0x10,
297 TEP_EVENT_FL_ISFUNCRET = 0x20,
298 TEP_EVENT_FL_NOHANDLE = 0x40,
299 TEP_EVENT_FL_PRINTRAW = 0x80,
301 TEP_EVENT_FL_FAILED = 0x80000000
304 enum tep_event_sort_type {
307 TEP_EVENT_SORT_SYSTEM,
310 enum tep_event_type {
322 typedef unsigned long long (*tep_func_handler)(struct trace_seq *s,
323 unsigned long long *args);
325 enum tep_func_arg_type {
331 TEP_FUNC_ARG_MAX_TYPES
335 TEP_NSEC_OUTPUT = 1, /* output in NSECS */
336 TEP_DISABLE_SYS_PLUGINS = 1 << 1,
337 TEP_DISABLE_PLUGINS = 1 << 2,
341 _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \
342 _PE(PARSE_EVENT_FAILED, "failed to parse event"), \
343 _PE(READ_ID_FAILED, "failed to read event id"), \
344 _PE(READ_FORMAT_FAILED, "failed to read event format"), \
345 _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \
346 _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\
347 _PE(INVALID_ARG_TYPE, "invalid argument type"), \
348 _PE(INVALID_EXP_TYPE, "invalid expression type"), \
349 _PE(INVALID_OP_TYPE, "invalid operator type"), \
350 _PE(INVALID_EVENT_NAME, "invalid event name"), \
351 _PE(EVENT_NOT_FOUND, "no event found"), \
352 _PE(SYNTAX_ERROR, "syntax error"), \
353 _PE(ILLEGAL_RVALUE, "illegal rvalue"), \
354 _PE(ILLEGAL_LVALUE, "illegal lvalue for string comparison"), \
355 _PE(INVALID_REGEX, "regex did not compute"), \
356 _PE(ILLEGAL_STRING_CMP, "illegal comparison for string"), \
357 _PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), \
358 _PE(REPARENT_NOT_OP, "cannot reparent other than OP"), \
359 _PE(REPARENT_FAILED, "failed to reparent filter OP"), \
360 _PE(BAD_FILTER_ARG, "bad arg in filter tree"), \
361 _PE(UNEXPECTED_TYPE, "unexpected type (not a value)"), \
362 _PE(ILLEGAL_TOKEN, "illegal token"), \
363 _PE(INVALID_PAREN, "open parenthesis cannot come here"), \
364 _PE(UNBALANCED_PAREN, "unbalanced number of parenthesis"), \
365 _PE(UNKNOWN_TOKEN, "unknown token"), \
366 _PE(FILTER_NOT_FOUND, "no filter found"), \
367 _PE(NOT_A_NUMBER, "must have number field"), \
368 _PE(NO_FILTER, "no filters exists"), \
369 _PE(FILTER_MISS, "record does not match to filter")
372 #define _PE(__code, __str) TEP_ERRNO__ ## __code
374 TEP_ERRNO__SUCCESS = 0,
375 TEP_ERRNO__FILTER_MATCH = TEP_ERRNO__SUCCESS,
378 * Choose an arbitrary negative big number not to clash with standard
379 * errno since SUS requires the errno has distinct positive values.
380 * See 'Issue 6' in the link below.
382 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
384 __TEP_ERRNO__START = -100000,
392 struct tep_plugin_list;
394 #define INVALID_PLUGIN_LIST_OPTION ((char **)((unsigned long)-1))
396 struct tep_plugin_list *tep_load_plugins(struct tep_handle *pevent);
397 void tep_unload_plugins(struct tep_plugin_list *plugin_list,
398 struct tep_handle *pevent);
399 char **tep_plugin_list_options(void);
400 void tep_plugin_free_options_list(char **list);
401 int tep_plugin_add_options(const char *name,
402 struct tep_plugin_option *options);
403 void tep_plugin_remove_options(struct tep_plugin_option *options);
404 void tep_print_plugins(struct trace_seq *s,
405 const char *prefix, const char *suffix,
406 const struct tep_plugin_list *list);
409 typedef char *(tep_func_resolver_t)(void *priv,
410 unsigned long long *addrp, char **modp);
411 void tep_set_flag(struct tep_handle *tep, int flag);
413 static inline int tep_host_bigendian(void)
415 unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
418 memcpy(&val, str, 4);
419 return val == 0x01020304;
422 /* taken from kernel/trace/trace.h */
423 enum trace_flag_type {
424 TRACE_FLAG_IRQS_OFF = 0x01,
425 TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
426 TRACE_FLAG_NEED_RESCHED = 0x04,
427 TRACE_FLAG_HARDIRQ = 0x08,
428 TRACE_FLAG_SOFTIRQ = 0x10,
431 int tep_set_function_resolver(struct tep_handle *pevent,
432 tep_func_resolver_t *func, void *priv);
433 void tep_reset_function_resolver(struct tep_handle *pevent);
434 int tep_register_comm(struct tep_handle *pevent, const char *comm, int pid);
435 int tep_register_trace_clock(struct tep_handle *pevent, const char *trace_clock);
436 int tep_register_function(struct tep_handle *pevent, char *name,
437 unsigned long long addr, char *mod);
438 int tep_register_print_string(struct tep_handle *pevent, const char *fmt,
439 unsigned long long addr);
440 int tep_pid_is_registered(struct tep_handle *pevent, int pid);
442 void tep_print_event_task(struct tep_handle *pevent, struct trace_seq *s,
443 struct tep_event *event,
444 struct tep_record *record);
445 void tep_print_event_time(struct tep_handle *pevent, struct trace_seq *s,
446 struct tep_event *event,
447 struct tep_record *record,
448 bool use_trace_clock);
449 void tep_print_event_data(struct tep_handle *pevent, struct trace_seq *s,
450 struct tep_event *event,
451 struct tep_record *record);
452 void tep_print_event(struct tep_handle *pevent, struct trace_seq *s,
453 struct tep_record *record, bool use_trace_clock);
455 int tep_parse_header_page(struct tep_handle *pevent, char *buf, unsigned long size,
458 enum tep_errno tep_parse_event(struct tep_handle *pevent, const char *buf,
459 unsigned long size, const char *sys);
460 enum tep_errno tep_parse_format(struct tep_handle *pevent,
461 struct tep_event **eventp,
463 unsigned long size, const char *sys);
465 void *tep_get_field_raw(struct trace_seq *s, struct tep_event *event,
466 const char *name, struct tep_record *record,
469 int tep_get_field_val(struct trace_seq *s, struct tep_event *event,
470 const char *name, struct tep_record *record,
471 unsigned long long *val, int err);
472 int tep_get_common_field_val(struct trace_seq *s, struct tep_event *event,
473 const char *name, struct tep_record *record,
474 unsigned long long *val, int err);
475 int tep_get_any_field_val(struct trace_seq *s, struct tep_event *event,
476 const char *name, struct tep_record *record,
477 unsigned long long *val, int err);
479 int tep_print_num_field(struct trace_seq *s, const char *fmt,
480 struct tep_event *event, const char *name,
481 struct tep_record *record, int err);
483 int tep_print_func_field(struct trace_seq *s, const char *fmt,
484 struct tep_event *event, const char *name,
485 struct tep_record *record, int err);
487 int tep_register_event_handler(struct tep_handle *pevent, int id,
488 const char *sys_name, const char *event_name,
489 tep_event_handler_func func, void *context);
490 int tep_unregister_event_handler(struct tep_handle *pevent, int id,
491 const char *sys_name, const char *event_name,
492 tep_event_handler_func func, void *context);
493 int tep_register_print_function(struct tep_handle *pevent,
494 tep_func_handler func,
495 enum tep_func_arg_type ret_type,
497 int tep_unregister_print_function(struct tep_handle *pevent,
498 tep_func_handler func, char *name);
500 struct tep_format_field *tep_find_common_field(struct tep_event *event, const char *name);
501 struct tep_format_field *tep_find_field(struct tep_event *event, const char *name);
502 struct tep_format_field *tep_find_any_field(struct tep_event *event, const char *name);
504 const char *tep_find_function(struct tep_handle *pevent, unsigned long long addr);
506 tep_find_function_address(struct tep_handle *pevent, unsigned long long addr);
507 unsigned long long tep_read_number(struct tep_handle *pevent, const void *ptr, int size);
508 int tep_read_number_field(struct tep_format_field *field, const void *data,
509 unsigned long long *value);
511 struct tep_event *tep_get_first_event(struct tep_handle *tep);
512 int tep_get_events_count(struct tep_handle *tep);
513 struct tep_event *tep_find_event(struct tep_handle *pevent, int id);
516 tep_find_event_by_name(struct tep_handle *pevent, const char *sys, const char *name);
518 tep_find_event_by_record(struct tep_handle *pevent, struct tep_record *record);
520 void tep_data_lat_fmt(struct tep_handle *pevent,
521 struct trace_seq *s, struct tep_record *record);
522 int tep_data_type(struct tep_handle *pevent, struct tep_record *rec);
523 struct tep_event *tep_data_event_from_type(struct tep_handle *pevent, int type);
524 int tep_data_pid(struct tep_handle *pevent, struct tep_record *rec);
525 int tep_data_preempt_count(struct tep_handle *pevent, struct tep_record *rec);
526 int tep_data_flags(struct tep_handle *pevent, struct tep_record *rec);
527 const char *tep_data_comm_from_pid(struct tep_handle *pevent, int pid);
529 struct cmdline *tep_data_pid_from_comm(struct tep_handle *pevent, const char *comm,
530 struct cmdline *next);
531 int tep_cmdline_pid(struct tep_handle *pevent, struct cmdline *cmdline);
533 void tep_print_field(struct trace_seq *s, void *data,
534 struct tep_format_field *field);
535 void tep_print_fields(struct trace_seq *s, void *data,
536 int size __maybe_unused, struct tep_event *event);
537 void tep_event_info(struct trace_seq *s, struct tep_event *event,
538 struct tep_record *record);
539 int tep_strerror(struct tep_handle *pevent, enum tep_errno errnum,
540 char *buf, size_t buflen);
542 struct tep_event **tep_list_events(struct tep_handle *pevent, enum tep_event_sort_type);
543 struct tep_format_field **tep_event_common_fields(struct tep_event *event);
544 struct tep_format_field **tep_event_fields(struct tep_event *event);
547 TEP_LITTLE_ENDIAN = 0,
550 int tep_get_cpus(struct tep_handle *pevent);
551 void tep_set_cpus(struct tep_handle *pevent, int cpus);
552 int tep_get_long_size(struct tep_handle *pevent);
553 void tep_set_long_size(struct tep_handle *pevent, int long_size);
554 int tep_get_page_size(struct tep_handle *pevent);
555 void tep_set_page_size(struct tep_handle *pevent, int _page_size);
556 int tep_is_file_bigendian(struct tep_handle *pevent);
557 void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian);
558 int tep_is_host_bigendian(struct tep_handle *pevent);
559 void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian);
560 int tep_is_latency_format(struct tep_handle *pevent);
561 void tep_set_latency_format(struct tep_handle *pevent, int lat);
562 int tep_get_header_page_size(struct tep_handle *pevent);
564 struct tep_handle *tep_alloc(void);
565 void tep_free(struct tep_handle *pevent);
566 void tep_ref(struct tep_handle *pevent);
567 void tep_unref(struct tep_handle *pevent);
568 int tep_get_ref(struct tep_handle *tep);
570 /* access to the internal parser */
571 void tep_buffer_init(const char *buf, unsigned long long size);
572 enum tep_event_type tep_read_token(char **tok);
573 void tep_free_token(char *token);
574 int tep_peek_char(void);
575 const char *tep_get_input_buf(void);
576 unsigned long long tep_get_input_buf_ptr(void);
579 void tep_print_funcs(struct tep_handle *pevent);
580 void tep_print_printk(struct tep_handle *pevent);
582 /* ----------------------- filtering ----------------------- */
584 enum tep_filter_boolean_type {
589 enum tep_filter_op_type {
590 TEP_FILTER_OP_AND = 1,
595 enum tep_filter_cmp_type {
603 TEP_FILTER_CMP_MATCH,
604 TEP_FILTER_CMP_NOT_MATCH,
605 TEP_FILTER_CMP_REGEX,
606 TEP_FILTER_CMP_NOT_REGEX,
609 enum tep_filter_exp_type {
616 TEP_FILTER_EXP_RSHIFT,
617 TEP_FILTER_EXP_LSHIFT,
624 enum tep_filter_arg_type {
626 TEP_FILTER_ARG_BOOLEAN,
627 TEP_FILTER_ARG_VALUE,
628 TEP_FILTER_ARG_FIELD,
635 enum tep_filter_value_type {
641 struct tep_filter_arg;
643 struct tep_filter_arg_boolean {
644 enum tep_filter_boolean_type value;
647 struct tep_filter_arg_field {
648 struct tep_format_field *field;
651 struct tep_filter_arg_value {
652 enum tep_filter_value_type type;
655 unsigned long long val;
659 struct tep_filter_arg_op {
660 enum tep_filter_op_type type;
661 struct tep_filter_arg *left;
662 struct tep_filter_arg *right;
665 struct tep_filter_arg_exp {
666 enum tep_filter_exp_type type;
667 struct tep_filter_arg *left;
668 struct tep_filter_arg *right;
671 struct tep_filter_arg_num {
672 enum tep_filter_cmp_type type;
673 struct tep_filter_arg *left;
674 struct tep_filter_arg *right;
677 struct tep_filter_arg_str {
678 enum tep_filter_cmp_type type;
679 struct tep_format_field *field;
685 struct tep_filter_arg {
686 enum tep_filter_arg_type type;
688 struct tep_filter_arg_boolean boolean;
689 struct tep_filter_arg_field field;
690 struct tep_filter_arg_value value;
691 struct tep_filter_arg_op op;
692 struct tep_filter_arg_exp exp;
693 struct tep_filter_arg_num num;
694 struct tep_filter_arg_str str;
698 struct tep_filter_type {
700 struct tep_event *event;
701 struct tep_filter_arg *filter;
704 #define TEP_FILTER_ERROR_BUFSZ 1024
706 struct tep_event_filter {
707 struct tep_handle *pevent;
709 struct tep_filter_type *event_filters;
710 char error_buffer[TEP_FILTER_ERROR_BUFSZ];
713 struct tep_event_filter *tep_filter_alloc(struct tep_handle *pevent);
715 /* for backward compatibility */
716 #define FILTER_NONE TEP_ERRNO__NO_FILTER
717 #define FILTER_NOEXIST TEP_ERRNO__FILTER_NOT_FOUND
718 #define FILTER_MISS TEP_ERRNO__FILTER_MISS
719 #define FILTER_MATCH TEP_ERRNO__FILTER_MATCH
721 enum tep_filter_trivial_type {
722 TEP_FILTER_TRIVIAL_FALSE,
723 TEP_FILTER_TRIVIAL_TRUE,
724 TEP_FILTER_TRIVIAL_BOTH,
727 enum tep_errno tep_filter_add_filter_str(struct tep_event_filter *filter,
728 const char *filter_str);
730 enum tep_errno tep_filter_match(struct tep_event_filter *filter,
731 struct tep_record *record);
733 int tep_filter_strerror(struct tep_event_filter *filter, enum tep_errno err,
734 char *buf, size_t buflen);
736 int tep_event_filtered(struct tep_event_filter *filter,
739 void tep_filter_reset(struct tep_event_filter *filter);
741 int tep_filter_clear_trivial(struct tep_event_filter *filter,
742 enum tep_filter_trivial_type type);
744 void tep_filter_free(struct tep_event_filter *filter);
746 char *tep_filter_make_string(struct tep_event_filter *filter, int event_id);
748 int tep_filter_remove_event(struct tep_event_filter *filter,
751 int tep_filter_event_has_trivial(struct tep_event_filter *filter,
753 enum tep_filter_trivial_type type);
755 int tep_filter_copy(struct tep_event_filter *dest, struct tep_event_filter *source);
757 int tep_update_trivial(struct tep_event_filter *dest, struct tep_event_filter *source,
758 enum tep_filter_trivial_type type);
760 int tep_filter_compare(struct tep_event_filter *filter1, struct tep_event_filter *filter2);
762 #endif /* _PARSE_EVENTS_H */