2 * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
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 #ifndef __maybe_unused
30 #define __maybe_unused __attribute__((unused))
33 /* ----------------------- trace_seq ----------------------- */
36 #ifndef TRACE_SEQ_BUF_SIZE
37 #define TRACE_SEQ_BUF_SIZE 4096
41 #define DEBUG_RECORD 0
44 struct pevent_record {
45 unsigned long long ts;
46 unsigned long long offset;
47 long long missed_events; /* buffer dropped events before */
48 int record_size; /* size of binary record */
49 int size; /* size of data */
53 int locked; /* Do not free, even if ref_count is zero */
56 struct pevent_record *prev;
57 struct pevent_record *next;
64 TRACE_SEQ__BUFFER_POISONED,
65 TRACE_SEQ__MEM_ALLOC_FAILED,
69 * Trace sequences are used to allow a function to call several other functions
70 * to create a string of data to use (up to a max of PAGE_SIZE).
75 unsigned int buffer_size;
78 enum trace_seq_fail state;
81 void trace_seq_init(struct trace_seq *s);
82 void trace_seq_reset(struct trace_seq *s);
83 void trace_seq_destroy(struct trace_seq *s);
85 extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
86 __attribute__ ((format (printf, 2, 3)));
87 extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
88 __attribute__ ((format (printf, 2, 0)));
90 extern int trace_seq_puts(struct trace_seq *s, const char *str);
91 extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
93 extern void trace_seq_terminate(struct trace_seq *s);
95 extern int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp);
96 extern int trace_seq_do_printf(struct trace_seq *s);
99 /* ----------------------- pevent ----------------------- */
104 typedef int (*pevent_event_handler_func)(struct trace_seq *s,
105 struct pevent_record *record,
106 struct event_format *event,
109 typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
110 typedef int (*pevent_plugin_unload_func)(struct pevent *pevent);
112 struct pevent_plugin_option {
113 struct pevent_plugin_option *next;
125 * Plugin hooks that can be called:
127 * PEVENT_PLUGIN_LOADER: (required)
128 * The function name to initialized the plugin.
130 * int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
132 * PEVENT_PLUGIN_UNLOADER: (optional)
133 * The function called just before unloading
135 * int PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
137 * PEVENT_PLUGIN_OPTIONS: (optional)
138 * Plugin options that can be set before loading
140 * struct pevent_plugin_option PEVENT_PLUGIN_OPTIONS[] = {
142 * .name = "option-name",
143 * .plugin_alias = "overide-file-name", (optional)
144 * .description = "description of option to show users",
151 * Array must end with .name = NULL;
154 * .plugin_alias is used to give a shorter name to access
155 * the vairable. Useful if a plugin handles more than one event.
157 * If .value is not set, then it is considered a boolean and only
158 * .set will be processed. If .value is defined, then it is considered
159 * a string option and .set will be ignored.
161 * PEVENT_PLUGIN_ALIAS: (optional)
162 * The name to use for finding options (uses filename if not defined)
164 #define PEVENT_PLUGIN_LOADER pevent_plugin_loader
165 #define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader
166 #define PEVENT_PLUGIN_OPTIONS pevent_plugin_options
167 #define PEVENT_PLUGIN_ALIAS pevent_plugin_alias
168 #define _MAKE_STR(x) #x
169 #define MAKE_STR(x) _MAKE_STR(x)
170 #define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER)
171 #define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER)
172 #define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS)
173 #define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS)
175 #define NSECS_PER_SEC 1000000000ULL
176 #define NSECS_PER_USEC 1000ULL
180 FIELD_IS_POINTER = 2,
183 FIELD_IS_DYNAMIC = 16,
186 FIELD_IS_SYMBOLIC = 128,
189 struct format_field {
190 struct format_field *next;
191 struct event_format *event;
197 unsigned int arraylen;
198 unsigned int elementsize;
205 struct format_field *common_fields;
206 struct format_field *fields;
209 struct print_arg_atom {
213 struct print_arg_string {
218 struct print_arg_bitmask {
223 struct print_arg_field {
225 struct format_field *field;
228 struct print_flag_sym {
229 struct print_flag_sym *next;
234 struct print_arg_typecast {
236 struct print_arg *item;
239 struct print_arg_flags {
240 struct print_arg *field;
242 struct print_flag_sym *flags;
245 struct print_arg_symbol {
246 struct print_arg *field;
247 struct print_flag_sym *symbols;
250 struct print_arg_hex {
251 struct print_arg *field;
252 struct print_arg *size;
255 struct print_arg_int_array {
256 struct print_arg *field;
257 struct print_arg *count;
258 struct print_arg *el_size;
261 struct print_arg_dynarray {
262 struct format_field *field;
263 struct print_arg *index;
268 struct print_arg_op {
271 struct print_arg *left;
272 struct print_arg *right;
275 struct pevent_function_handler;
277 struct print_arg_func {
278 struct pevent_function_handler *func;
279 struct print_arg *args;
282 enum print_arg_type {
300 struct print_arg *next;
301 enum print_arg_type type;
303 struct print_arg_atom atom;
304 struct print_arg_field field;
305 struct print_arg_typecast typecast;
306 struct print_arg_flags flags;
307 struct print_arg_symbol symbol;
308 struct print_arg_hex hex;
309 struct print_arg_int_array int_array;
310 struct print_arg_func func;
311 struct print_arg_string string;
312 struct print_arg_bitmask bitmask;
313 struct print_arg_op op;
314 struct print_arg_dynarray dynarray;
320 struct print_arg *args;
323 struct event_format {
324 struct pevent *pevent;
328 struct format format;
329 struct print_fmt print_fmt;
331 pevent_event_handler_func handler;
336 EVENT_FL_ISFTRACE = 0x01,
337 EVENT_FL_ISPRINT = 0x02,
338 EVENT_FL_ISBPRINT = 0x04,
339 EVENT_FL_ISFUNCENT = 0x10,
340 EVENT_FL_ISFUNCRET = 0x20,
341 EVENT_FL_NOHANDLE = 0x40,
342 EVENT_FL_PRINTRAW = 0x80,
344 EVENT_FL_FAILED = 0x80000000
347 enum event_sort_type {
365 typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
366 unsigned long long *args);
368 enum pevent_func_arg_type {
369 PEVENT_FUNC_ARG_VOID,
371 PEVENT_FUNC_ARG_LONG,
372 PEVENT_FUNC_ARG_STRING,
374 PEVENT_FUNC_ARG_MAX_TYPES
378 PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */
379 PEVENT_DISABLE_SYS_PLUGINS = 1 << 1,
380 PEVENT_DISABLE_PLUGINS = 1 << 2,
383 #define PEVENT_ERRORS \
384 _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \
385 _PE(PARSE_EVENT_FAILED, "failed to parse event"), \
386 _PE(READ_ID_FAILED, "failed to read event id"), \
387 _PE(READ_FORMAT_FAILED, "failed to read event format"), \
388 _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \
389 _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\
390 _PE(INVALID_ARG_TYPE, "invalid argument type"), \
391 _PE(INVALID_EXP_TYPE, "invalid expression type"), \
392 _PE(INVALID_OP_TYPE, "invalid operator type"), \
393 _PE(INVALID_EVENT_NAME, "invalid event name"), \
394 _PE(EVENT_NOT_FOUND, "no event found"), \
395 _PE(SYNTAX_ERROR, "syntax error"), \
396 _PE(ILLEGAL_RVALUE, "illegal rvalue"), \
397 _PE(ILLEGAL_LVALUE, "illegal lvalue for string comparison"), \
398 _PE(INVALID_REGEX, "regex did not compute"), \
399 _PE(ILLEGAL_STRING_CMP, "illegal comparison for string"), \
400 _PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), \
401 _PE(REPARENT_NOT_OP, "cannot reparent other than OP"), \
402 _PE(REPARENT_FAILED, "failed to reparent filter OP"), \
403 _PE(BAD_FILTER_ARG, "bad arg in filter tree"), \
404 _PE(UNEXPECTED_TYPE, "unexpected type (not a value)"), \
405 _PE(ILLEGAL_TOKEN, "illegal token"), \
406 _PE(INVALID_PAREN, "open parenthesis cannot come here"), \
407 _PE(UNBALANCED_PAREN, "unbalanced number of parenthesis"), \
408 _PE(UNKNOWN_TOKEN, "unknown token"), \
409 _PE(FILTER_NOT_FOUND, "no filter found"), \
410 _PE(NOT_A_NUMBER, "must have number field"), \
411 _PE(NO_FILTER, "no filters exists"), \
412 _PE(FILTER_MISS, "record does not match to filter")
415 #define _PE(__code, __str) PEVENT_ERRNO__ ## __code
417 PEVENT_ERRNO__SUCCESS = 0,
418 PEVENT_ERRNO__FILTER_MATCH = PEVENT_ERRNO__SUCCESS,
421 * Choose an arbitrary negative big number not to clash with standard
422 * errno since SUS requires the errno has distinct positive values.
423 * See 'Issue 6' in the link below.
425 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
427 __PEVENT_ERRNO__START = -100000,
437 #define INVALID_PLUGIN_LIST_OPTION ((char **)((unsigned long)-1))
439 struct plugin_list *traceevent_load_plugins(struct pevent *pevent);
440 void traceevent_unload_plugins(struct plugin_list *plugin_list,
441 struct pevent *pevent);
442 char **traceevent_plugin_list_options(void);
443 void traceevent_plugin_free_options_list(char **list);
444 int traceevent_plugin_add_options(const char *name,
445 struct pevent_plugin_option *options);
446 void traceevent_plugin_remove_options(struct pevent_plugin_option *options);
447 void traceevent_print_plugins(struct trace_seq *s,
448 const char *prefix, const char *suffix,
449 const struct plugin_list *list);
455 struct event_handler;
460 int header_page_ts_offset;
461 int header_page_ts_size;
462 int header_page_size_offset;
463 int header_page_size_size;
464 int header_page_data_offset;
465 int header_page_data_size;
466 int header_page_overwrite;
479 struct cmdline *cmdlines;
480 struct cmdline_list *cmdlist;
483 struct func_map *func_map;
484 struct func_list *funclist;
485 unsigned int func_count;
487 struct printk_map *printk_map;
488 struct printk_list *printklist;
489 unsigned int printk_count;
492 struct event_format **events;
494 struct event_format **sort_events;
495 enum event_sort_type last_type;
518 struct format_field *bprint_ip_field;
519 struct format_field *bprint_fmt_field;
520 struct format_field *bprint_buf_field;
522 struct event_handler *handlers;
523 struct pevent_function_handler *func_handlers;
526 struct event_format *last_event;
531 static inline void pevent_set_flag(struct pevent *pevent, int flag)
533 pevent->flags |= flag;
536 static inline unsigned short
537 __data2host2(struct pevent *pevent, unsigned short data)
541 if (pevent->host_bigendian == pevent->file_bigendian)
544 swap = ((data & 0xffULL) << 8) |
545 ((data & (0xffULL << 8)) >> 8);
550 static inline unsigned int
551 __data2host4(struct pevent *pevent, unsigned int data)
555 if (pevent->host_bigendian == pevent->file_bigendian)
558 swap = ((data & 0xffULL) << 24) |
559 ((data & (0xffULL << 8)) << 8) |
560 ((data & (0xffULL << 16)) >> 8) |
561 ((data & (0xffULL << 24)) >> 24);
566 static inline unsigned long long
567 __data2host8(struct pevent *pevent, unsigned long long data)
569 unsigned long long swap;
571 if (pevent->host_bigendian == pevent->file_bigendian)
574 swap = ((data & 0xffULL) << 56) |
575 ((data & (0xffULL << 8)) << 40) |
576 ((data & (0xffULL << 16)) << 24) |
577 ((data & (0xffULL << 24)) << 8) |
578 ((data & (0xffULL << 32)) >> 8) |
579 ((data & (0xffULL << 40)) >> 24) |
580 ((data & (0xffULL << 48)) >> 40) |
581 ((data & (0xffULL << 56)) >> 56);
586 #define data2host2(pevent, ptr) __data2host2(pevent, *(unsigned short *)(ptr))
587 #define data2host4(pevent, ptr) __data2host4(pevent, *(unsigned int *)(ptr))
588 #define data2host8(pevent, ptr) \
590 unsigned long long __val; \
592 memcpy(&__val, (ptr), sizeof(unsigned long long)); \
593 __data2host8(pevent, __val); \
596 static inline int traceevent_host_bigendian(void)
598 unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
601 memcpy(&val, str, 4);
602 return val == 0x01020304;
605 /* taken from kernel/trace/trace.h */
606 enum trace_flag_type {
607 TRACE_FLAG_IRQS_OFF = 0x01,
608 TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
609 TRACE_FLAG_NEED_RESCHED = 0x04,
610 TRACE_FLAG_HARDIRQ = 0x08,
611 TRACE_FLAG_SOFTIRQ = 0x10,
614 int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
615 int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock);
616 int pevent_register_function(struct pevent *pevent, char *name,
617 unsigned long long addr, char *mod);
618 int pevent_register_print_string(struct pevent *pevent, const char *fmt,
619 unsigned long long addr);
620 int pevent_pid_is_registered(struct pevent *pevent, int pid);
622 void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
623 struct pevent_record *record, bool use_trace_clock);
625 int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
628 enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
629 unsigned long size, const char *sys);
630 enum pevent_errno pevent_parse_format(struct pevent *pevent,
631 struct event_format **eventp,
633 unsigned long size, const char *sys);
634 void pevent_free_format(struct event_format *event);
635 void pevent_free_format_field(struct format_field *field);
637 void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
638 const char *name, struct pevent_record *record,
641 int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
642 const char *name, struct pevent_record *record,
643 unsigned long long *val, int err);
644 int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
645 const char *name, struct pevent_record *record,
646 unsigned long long *val, int err);
647 int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
648 const char *name, struct pevent_record *record,
649 unsigned long long *val, int err);
651 int pevent_print_num_field(struct trace_seq *s, const char *fmt,
652 struct event_format *event, const char *name,
653 struct pevent_record *record, int err);
655 int pevent_print_func_field(struct trace_seq *s, const char *fmt,
656 struct event_format *event, const char *name,
657 struct pevent_record *record, int err);
659 int pevent_register_event_handler(struct pevent *pevent, int id,
660 const char *sys_name, const char *event_name,
661 pevent_event_handler_func func, void *context);
662 int pevent_unregister_event_handler(struct pevent *pevent, int id,
663 const char *sys_name, const char *event_name,
664 pevent_event_handler_func func, void *context);
665 int pevent_register_print_function(struct pevent *pevent,
666 pevent_func_handler func,
667 enum pevent_func_arg_type ret_type,
669 int pevent_unregister_print_function(struct pevent *pevent,
670 pevent_func_handler func, char *name);
672 struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
673 struct format_field *pevent_find_field(struct event_format *event, const char *name);
674 struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
676 const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
678 pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
679 unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
680 int pevent_read_number_field(struct format_field *field, const void *data,
681 unsigned long long *value);
683 struct event_format *pevent_find_event(struct pevent *pevent, int id);
685 struct event_format *
686 pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
688 void pevent_data_lat_fmt(struct pevent *pevent,
689 struct trace_seq *s, struct pevent_record *record);
690 int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
691 struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
692 int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
693 const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
695 struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm,
696 struct cmdline *next);
697 int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline);
699 void pevent_event_info(struct trace_seq *s, struct event_format *event,
700 struct pevent_record *record);
701 int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
702 char *buf, size_t buflen);
704 struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
705 struct format_field **pevent_event_common_fields(struct event_format *event);
706 struct format_field **pevent_event_fields(struct event_format *event);
708 static inline int pevent_get_cpus(struct pevent *pevent)
713 static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
718 static inline int pevent_get_long_size(struct pevent *pevent)
720 return pevent->long_size;
723 static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
725 pevent->long_size = long_size;
728 static inline int pevent_get_page_size(struct pevent *pevent)
730 return pevent->page_size;
733 static inline void pevent_set_page_size(struct pevent *pevent, int _page_size)
735 pevent->page_size = _page_size;
738 static inline int pevent_is_file_bigendian(struct pevent *pevent)
740 return pevent->file_bigendian;
743 static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
745 pevent->file_bigendian = endian;
748 static inline int pevent_is_host_bigendian(struct pevent *pevent)
750 return pevent->host_bigendian;
753 static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
755 pevent->host_bigendian = endian;
758 static inline int pevent_is_latency_format(struct pevent *pevent)
760 return pevent->latency_format;
763 static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
765 pevent->latency_format = lat;
768 struct pevent *pevent_alloc(void);
769 void pevent_free(struct pevent *pevent);
770 void pevent_ref(struct pevent *pevent);
771 void pevent_unref(struct pevent *pevent);
773 /* access to the internal parser */
774 void pevent_buffer_init(const char *buf, unsigned long long size);
775 enum event_type pevent_read_token(char **tok);
776 void pevent_free_token(char *token);
777 int pevent_peek_char(void);
778 const char *pevent_get_input_buf(void);
779 unsigned long long pevent_get_input_buf_ptr(void);
782 void pevent_print_funcs(struct pevent *pevent);
783 void pevent_print_printk(struct pevent *pevent);
785 /* ----------------------- filtering ----------------------- */
787 enum filter_boolean_type {
792 enum filter_op_type {
798 enum filter_cmp_type {
807 FILTER_CMP_NOT_MATCH,
809 FILTER_CMP_NOT_REGEX,
812 enum filter_exp_type {
827 enum filter_arg_type {
838 enum filter_value_type {
846 struct filter_arg_boolean {
847 enum filter_boolean_type value;
850 struct filter_arg_field {
851 struct format_field *field;
854 struct filter_arg_value {
855 enum filter_value_type type;
858 unsigned long long val;
862 struct filter_arg_op {
863 enum filter_op_type type;
864 struct filter_arg *left;
865 struct filter_arg *right;
868 struct filter_arg_exp {
869 enum filter_exp_type type;
870 struct filter_arg *left;
871 struct filter_arg *right;
874 struct filter_arg_num {
875 enum filter_cmp_type type;
876 struct filter_arg *left;
877 struct filter_arg *right;
880 struct filter_arg_str {
881 enum filter_cmp_type type;
882 struct format_field *field;
889 enum filter_arg_type type;
891 struct filter_arg_boolean boolean;
892 struct filter_arg_field field;
893 struct filter_arg_value value;
894 struct filter_arg_op op;
895 struct filter_arg_exp exp;
896 struct filter_arg_num num;
897 struct filter_arg_str str;
903 struct event_format *event;
904 struct filter_arg *filter;
907 #define PEVENT_FILTER_ERROR_BUFSZ 1024
909 struct event_filter {
910 struct pevent *pevent;
912 struct filter_type *event_filters;
913 char error_buffer[PEVENT_FILTER_ERROR_BUFSZ];
916 struct event_filter *pevent_filter_alloc(struct pevent *pevent);
918 /* for backward compatibility */
919 #define FILTER_NONE PEVENT_ERRNO__NO_FILTER
920 #define FILTER_NOEXIST PEVENT_ERRNO__FILTER_NOT_FOUND
921 #define FILTER_MISS PEVENT_ERRNO__FILTER_MISS
922 #define FILTER_MATCH PEVENT_ERRNO__FILTER_MATCH
924 enum filter_trivial_type {
925 FILTER_TRIVIAL_FALSE,
930 enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter,
931 const char *filter_str);
933 enum pevent_errno pevent_filter_match(struct event_filter *filter,
934 struct pevent_record *record);
936 int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err,
937 char *buf, size_t buflen);
939 int pevent_event_filtered(struct event_filter *filter,
942 void pevent_filter_reset(struct event_filter *filter);
944 int pevent_filter_clear_trivial(struct event_filter *filter,
945 enum filter_trivial_type type);
947 void pevent_filter_free(struct event_filter *filter);
949 char *pevent_filter_make_string(struct event_filter *filter, int event_id);
951 int pevent_filter_remove_event(struct event_filter *filter,
954 int pevent_filter_event_has_trivial(struct event_filter *filter,
956 enum filter_trivial_type type);
958 int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
960 int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
961 enum filter_trivial_type type);
963 int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
965 #endif /* _PARSE_EVENTS_H */