Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1/*
2 * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
3 *
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!)
9 *
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.
14 *
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>
17 *
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
19 */
20#ifndef _PARSE_EVENTS_H
21#define _PARSE_EVENTS_H
22
23#include <stdbool.h>
24#include <stdarg.h>
25#include <stdio.h>
26#include <regex.h>
27#include <string.h>
28
29#ifndef __maybe_unused
30#define __maybe_unused __attribute__((unused))
31#endif
32
33/* ----------------------- trace_seq ----------------------- */
34
35
36#ifndef TRACE_SEQ_BUF_SIZE
37#define TRACE_SEQ_BUF_SIZE 4096
38#endif
39
40#ifndef DEBUG_RECORD
41#define DEBUG_RECORD 0
42#endif
43
44struct 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 */
50 void *data;
51 int cpu;
52 int ref_count;
53 int locked; /* Do not free, even if ref_count is zero */
54 void *priv;
55#if DEBUG_RECORD
56 struct pevent_record *prev;
57 struct pevent_record *next;
58 long alloc_addr;
59#endif
60};
61
62enum trace_seq_fail {
63 TRACE_SEQ__GOOD,
64 TRACE_SEQ__BUFFER_POISONED,
65 TRACE_SEQ__MEM_ALLOC_FAILED,
66};
67
68/*
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).
71 */
72
73struct trace_seq {
74 char *buffer;
75 unsigned int buffer_size;
76 unsigned int len;
77 unsigned int readpos;
78 enum trace_seq_fail state;
79};
80
81void trace_seq_init(struct trace_seq *s);
82void trace_seq_reset(struct trace_seq *s);
83void trace_seq_destroy(struct trace_seq *s);
84
85extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
86 __attribute__ ((format (printf, 2, 3)));
87extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
88 __attribute__ ((format (printf, 2, 0)));
89
90extern int trace_seq_puts(struct trace_seq *s, const char *str);
91extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
92
93extern void trace_seq_terminate(struct trace_seq *s);
94
95extern int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp);
96extern int trace_seq_do_printf(struct trace_seq *s);
97
98
99/* ----------------------- pevent ----------------------- */
100
101struct pevent;
102struct event_format;
103
104typedef int (*pevent_event_handler_func)(struct trace_seq *s,
105 struct pevent_record *record,
106 struct event_format *event,
107 void *context);
108
109typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
110typedef int (*pevent_plugin_unload_func)(struct pevent *pevent);
111
112struct pevent_plugin_option {
113 struct pevent_plugin_option *next;
114 void *handle;
115 char *file;
116 char *name;
117 char *plugin_alias;
118 char *description;
119 const char *value;
120 void *priv;
121 int set;
122};
123
124/*
125 * Plugin hooks that can be called:
126 *
127 * PEVENT_PLUGIN_LOADER: (required)
128 * The function name to initialized the plugin.
129 *
130 * int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
131 *
132 * PEVENT_PLUGIN_UNLOADER: (optional)
133 * The function called just before unloading
134 *
135 * int PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
136 *
137 * PEVENT_PLUGIN_OPTIONS: (optional)
138 * Plugin options that can be set before loading
139 *
140 * struct pevent_plugin_option PEVENT_PLUGIN_OPTIONS[] = {
141 * {
142 * .name = "option-name",
143 * .plugin_alias = "overide-file-name", (optional)
144 * .description = "description of option to show users",
145 * },
146 * {
147 * .name = NULL,
148 * },
149 * };
150 *
151 * Array must end with .name = NULL;
152 *
153 *
154 * .plugin_alias is used to give a shorter name to access
155 * the vairable. Useful if a plugin handles more than one event.
156 *
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.
160 *
161 * PEVENT_PLUGIN_ALIAS: (optional)
162 * The name to use for finding options (uses filename if not defined)
163 */
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)
174
175#define NSECS_PER_SEC 1000000000ULL
176#define NSECS_PER_USEC 1000ULL
177
178enum format_flags {
179 FIELD_IS_ARRAY = 1,
180 FIELD_IS_POINTER = 2,
181 FIELD_IS_SIGNED = 4,
182 FIELD_IS_STRING = 8,
183 FIELD_IS_DYNAMIC = 16,
184 FIELD_IS_LONG = 32,
185 FIELD_IS_FLAG = 64,
186 FIELD_IS_SYMBOLIC = 128,
187};
188
189struct format_field {
190 struct format_field *next;
191 struct event_format *event;
192 char *type;
193 char *name;
194 char *alias;
195 int offset;
196 int size;
197 unsigned int arraylen;
198 unsigned int elementsize;
199 unsigned long flags;
200};
201
202struct format {
203 int nr_common;
204 int nr_fields;
205 struct format_field *common_fields;
206 struct format_field *fields;
207};
208
209struct print_arg_atom {
210 char *atom;
211};
212
213struct print_arg_string {
214 char *string;
215 int offset;
216};
217
218struct print_arg_bitmask {
219 char *bitmask;
220 int offset;
221};
222
223struct print_arg_field {
224 char *name;
225 struct format_field *field;
226};
227
228struct print_flag_sym {
229 struct print_flag_sym *next;
230 char *value;
231 char *str;
232};
233
234struct print_arg_typecast {
235 char *type;
236 struct print_arg *item;
237};
238
239struct print_arg_flags {
240 struct print_arg *field;
241 char *delim;
242 struct print_flag_sym *flags;
243};
244
245struct print_arg_symbol {
246 struct print_arg *field;
247 struct print_flag_sym *symbols;
248};
249
250struct print_arg_hex {
251 struct print_arg *field;
252 struct print_arg *size;
253};
254
255struct print_arg_int_array {
256 struct print_arg *field;
257 struct print_arg *count;
258 struct print_arg *el_size;
259};
260
261struct print_arg_dynarray {
262 struct format_field *field;
263 struct print_arg *index;
264};
265
266struct print_arg;
267
268struct print_arg_op {
269 char *op;
270 int prio;
271 struct print_arg *left;
272 struct print_arg *right;
273};
274
275struct pevent_function_handler;
276
277struct print_arg_func {
278 struct pevent_function_handler *func;
279 struct print_arg *args;
280};
281
282enum print_arg_type {
283 PRINT_NULL,
284 PRINT_ATOM,
285 PRINT_FIELD,
286 PRINT_FLAGS,
287 PRINT_SYMBOL,
288 PRINT_HEX,
289 PRINT_INT_ARRAY,
290 PRINT_TYPE,
291 PRINT_STRING,
292 PRINT_BSTRING,
293 PRINT_DYNAMIC_ARRAY,
294 PRINT_OP,
295 PRINT_FUNC,
296 PRINT_BITMASK,
297};
298
299struct print_arg {
300 struct print_arg *next;
301 enum print_arg_type type;
302 union {
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;
315 };
316};
317
318struct print_fmt {
319 char *format;
320 struct print_arg *args;
321};
322
323struct event_format {
324 struct pevent *pevent;
325 char *name;
326 int id;
327 int flags;
328 struct format format;
329 struct print_fmt print_fmt;
330 char *system;
331 pevent_event_handler_func handler;
332 void *context;
333};
334
335enum {
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,
343
344 EVENT_FL_FAILED = 0x80000000
345};
346
347enum event_sort_type {
348 EVENT_SORT_ID,
349 EVENT_SORT_NAME,
350 EVENT_SORT_SYSTEM,
351};
352
353enum event_type {
354 EVENT_ERROR,
355 EVENT_NONE,
356 EVENT_SPACE,
357 EVENT_NEWLINE,
358 EVENT_OP,
359 EVENT_DELIM,
360 EVENT_ITEM,
361 EVENT_DQUOTE,
362 EVENT_SQUOTE,
363};
364
365typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
366 unsigned long long *args);
367
368enum pevent_func_arg_type {
369 PEVENT_FUNC_ARG_VOID,
370 PEVENT_FUNC_ARG_INT,
371 PEVENT_FUNC_ARG_LONG,
372 PEVENT_FUNC_ARG_STRING,
373 PEVENT_FUNC_ARG_PTR,
374 PEVENT_FUNC_ARG_MAX_TYPES
375};
376
377enum pevent_flag {
378 PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */
379 PEVENT_DISABLE_SYS_PLUGINS = 1 << 1,
380 PEVENT_DISABLE_PLUGINS = 1 << 2,
381};
382
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")
413
414#undef _PE
415#define _PE(__code, __str) PEVENT_ERRNO__ ## __code
416enum pevent_errno {
417 PEVENT_ERRNO__SUCCESS = 0,
418 PEVENT_ERRNO__FILTER_MATCH = PEVENT_ERRNO__SUCCESS,
419
420 /*
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.
424 *
425 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
426 */
427 __PEVENT_ERRNO__START = -100000,
428
429 PEVENT_ERRORS,
430
431 __PEVENT_ERRNO__END,
432};
433#undef _PE
434
435struct plugin_list;
436
437#define INVALID_PLUGIN_LIST_OPTION ((char **)((unsigned long)-1))
438
439struct plugin_list *traceevent_load_plugins(struct pevent *pevent);
440void traceevent_unload_plugins(struct plugin_list *plugin_list,
441 struct pevent *pevent);
442char **traceevent_plugin_list_options(void);
443void traceevent_plugin_free_options_list(char **list);
444int traceevent_plugin_add_options(const char *name,
445 struct pevent_plugin_option *options);
446void traceevent_plugin_remove_options(struct pevent_plugin_option *options);
447void traceevent_print_plugins(struct trace_seq *s,
448 const char *prefix, const char *suffix,
449 const struct plugin_list *list);
450
451struct cmdline;
452struct cmdline_list;
453struct func_map;
454struct func_list;
455struct event_handler;
456
457struct pevent {
458 int ref_count;
459
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;
467
468 int file_bigendian;
469 int host_bigendian;
470
471 int latency_format;
472
473 int old_format;
474
475 int cpus;
476 int long_size;
477 int page_size;
478
479 struct cmdline *cmdlines;
480 struct cmdline_list *cmdlist;
481 int cmdline_count;
482
483 struct func_map *func_map;
484 struct func_list *funclist;
485 unsigned int func_count;
486
487 struct printk_map *printk_map;
488 struct printk_list *printklist;
489 unsigned int printk_count;
490
491
492 struct event_format **events;
493 int nr_events;
494 struct event_format **sort_events;
495 enum event_sort_type last_type;
496
497 int type_offset;
498 int type_size;
499
500 int pid_offset;
501 int pid_size;
502
503 int pc_offset;
504 int pc_size;
505
506 int flags_offset;
507 int flags_size;
508
509 int ld_offset;
510 int ld_size;
511
512 int print_raw;
513
514 int test_filters;
515
516 int flags;
517
518 struct format_field *bprint_ip_field;
519 struct format_field *bprint_fmt_field;
520 struct format_field *bprint_buf_field;
521
522 struct event_handler *handlers;
523 struct pevent_function_handler *func_handlers;
524
525 /* cache */
526 struct event_format *last_event;
527
528 char *trace_clock;
529};
530
531static inline void pevent_set_flag(struct pevent *pevent, int flag)
532{
533 pevent->flags |= flag;
534}
535
536static inline unsigned short
537__data2host2(struct pevent *pevent, unsigned short data)
538{
539 unsigned short swap;
540
541 if (pevent->host_bigendian == pevent->file_bigendian)
542 return data;
543
544 swap = ((data & 0xffULL) << 8) |
545 ((data & (0xffULL << 8)) >> 8);
546
547 return swap;
548}
549
550static inline unsigned int
551__data2host4(struct pevent *pevent, unsigned int data)
552{
553 unsigned int swap;
554
555 if (pevent->host_bigendian == pevent->file_bigendian)
556 return data;
557
558 swap = ((data & 0xffULL) << 24) |
559 ((data & (0xffULL << 8)) << 8) |
560 ((data & (0xffULL << 16)) >> 8) |
561 ((data & (0xffULL << 24)) >> 24);
562
563 return swap;
564}
565
566static inline unsigned long long
567__data2host8(struct pevent *pevent, unsigned long long data)
568{
569 unsigned long long swap;
570
571 if (pevent->host_bigendian == pevent->file_bigendian)
572 return data;
573
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);
582
583 return swap;
584}
585
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) \
589({ \
590 unsigned long long __val; \
591 \
592 memcpy(&__val, (ptr), sizeof(unsigned long long)); \
593 __data2host8(pevent, __val); \
594})
595
596static inline int traceevent_host_bigendian(void)
597{
598 unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
599 unsigned int val;
600
601 memcpy(&val, str, 4);
602 return val == 0x01020304;
603}
604
605/* taken from kernel/trace/trace.h */
606enum 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,
612};
613
614int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
615int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock);
616int pevent_register_function(struct pevent *pevent, char *name,
617 unsigned long long addr, char *mod);
618int pevent_register_print_string(struct pevent *pevent, const char *fmt,
619 unsigned long long addr);
620int pevent_pid_is_registered(struct pevent *pevent, int pid);
621
622void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
623 struct pevent_record *record, bool use_trace_clock);
624
625int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
626 int long_size);
627
628enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
629 unsigned long size, const char *sys);
630enum pevent_errno pevent_parse_format(struct pevent *pevent,
631 struct event_format **eventp,
632 const char *buf,
633 unsigned long size, const char *sys);
634void pevent_free_format(struct event_format *event);
635void pevent_free_format_field(struct format_field *field);
636
637void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
638 const char *name, struct pevent_record *record,
639 int *len, int err);
640
641int 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);
644int 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);
647int 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);
650
651int 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);
654
655int 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);
658
659int 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);
662int 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);
665int pevent_register_print_function(struct pevent *pevent,
666 pevent_func_handler func,
667 enum pevent_func_arg_type ret_type,
668 char *name, ...);
669int pevent_unregister_print_function(struct pevent *pevent,
670 pevent_func_handler func, char *name);
671
672struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
673struct format_field *pevent_find_field(struct event_format *event, const char *name);
674struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
675
676const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
677unsigned long long
678pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
679unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
680int pevent_read_number_field(struct format_field *field, const void *data,
681 unsigned long long *value);
682
683struct event_format *pevent_find_event(struct pevent *pevent, int id);
684
685struct event_format *
686pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
687
688void pevent_data_lat_fmt(struct pevent *pevent,
689 struct trace_seq *s, struct pevent_record *record);
690int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
691struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
692int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
693const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
694struct cmdline;
695struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm,
696 struct cmdline *next);
697int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline);
698
699void pevent_event_info(struct trace_seq *s, struct event_format *event,
700 struct pevent_record *record);
701int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
702 char *buf, size_t buflen);
703
704struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
705struct format_field **pevent_event_common_fields(struct event_format *event);
706struct format_field **pevent_event_fields(struct event_format *event);
707
708static inline int pevent_get_cpus(struct pevent *pevent)
709{
710 return pevent->cpus;
711}
712
713static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
714{
715 pevent->cpus = cpus;
716}
717
718static inline int pevent_get_long_size(struct pevent *pevent)
719{
720 return pevent->long_size;
721}
722
723static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
724{
725 pevent->long_size = long_size;
726}
727
728static inline int pevent_get_page_size(struct pevent *pevent)
729{
730 return pevent->page_size;
731}
732
733static inline void pevent_set_page_size(struct pevent *pevent, int _page_size)
734{
735 pevent->page_size = _page_size;
736}
737
738static inline int pevent_is_file_bigendian(struct pevent *pevent)
739{
740 return pevent->file_bigendian;
741}
742
743static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
744{
745 pevent->file_bigendian = endian;
746}
747
748static inline int pevent_is_host_bigendian(struct pevent *pevent)
749{
750 return pevent->host_bigendian;
751}
752
753static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
754{
755 pevent->host_bigendian = endian;
756}
757
758static inline int pevent_is_latency_format(struct pevent *pevent)
759{
760 return pevent->latency_format;
761}
762
763static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
764{
765 pevent->latency_format = lat;
766}
767
768struct pevent *pevent_alloc(void);
769void pevent_free(struct pevent *pevent);
770void pevent_ref(struct pevent *pevent);
771void pevent_unref(struct pevent *pevent);
772
773/* access to the internal parser */
774void pevent_buffer_init(const char *buf, unsigned long long size);
775enum event_type pevent_read_token(char **tok);
776void pevent_free_token(char *token);
777int pevent_peek_char(void);
778const char *pevent_get_input_buf(void);
779unsigned long long pevent_get_input_buf_ptr(void);
780
781/* for debugging */
782void pevent_print_funcs(struct pevent *pevent);
783void pevent_print_printk(struct pevent *pevent);
784
785/* ----------------------- filtering ----------------------- */
786
787enum filter_boolean_type {
788 FILTER_FALSE,
789 FILTER_TRUE,
790};
791
792enum filter_op_type {
793 FILTER_OP_AND = 1,
794 FILTER_OP_OR,
795 FILTER_OP_NOT,
796};
797
798enum filter_cmp_type {
799 FILTER_CMP_NONE,
800 FILTER_CMP_EQ,
801 FILTER_CMP_NE,
802 FILTER_CMP_GT,
803 FILTER_CMP_LT,
804 FILTER_CMP_GE,
805 FILTER_CMP_LE,
806 FILTER_CMP_MATCH,
807 FILTER_CMP_NOT_MATCH,
808 FILTER_CMP_REGEX,
809 FILTER_CMP_NOT_REGEX,
810};
811
812enum filter_exp_type {
813 FILTER_EXP_NONE,
814 FILTER_EXP_ADD,
815 FILTER_EXP_SUB,
816 FILTER_EXP_MUL,
817 FILTER_EXP_DIV,
818 FILTER_EXP_MOD,
819 FILTER_EXP_RSHIFT,
820 FILTER_EXP_LSHIFT,
821 FILTER_EXP_AND,
822 FILTER_EXP_OR,
823 FILTER_EXP_XOR,
824 FILTER_EXP_NOT,
825};
826
827enum filter_arg_type {
828 FILTER_ARG_NONE,
829 FILTER_ARG_BOOLEAN,
830 FILTER_ARG_VALUE,
831 FILTER_ARG_FIELD,
832 FILTER_ARG_EXP,
833 FILTER_ARG_OP,
834 FILTER_ARG_NUM,
835 FILTER_ARG_STR,
836};
837
838enum filter_value_type {
839 FILTER_NUMBER,
840 FILTER_STRING,
841 FILTER_CHAR
842};
843
844struct fliter_arg;
845
846struct filter_arg_boolean {
847 enum filter_boolean_type value;
848};
849
850struct filter_arg_field {
851 struct format_field *field;
852};
853
854struct filter_arg_value {
855 enum filter_value_type type;
856 union {
857 char *str;
858 unsigned long long val;
859 };
860};
861
862struct filter_arg_op {
863 enum filter_op_type type;
864 struct filter_arg *left;
865 struct filter_arg *right;
866};
867
868struct filter_arg_exp {
869 enum filter_exp_type type;
870 struct filter_arg *left;
871 struct filter_arg *right;
872};
873
874struct filter_arg_num {
875 enum filter_cmp_type type;
876 struct filter_arg *left;
877 struct filter_arg *right;
878};
879
880struct filter_arg_str {
881 enum filter_cmp_type type;
882 struct format_field *field;
883 char *val;
884 char *buffer;
885 regex_t reg;
886};
887
888struct filter_arg {
889 enum filter_arg_type type;
890 union {
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;
898 };
899};
900
901struct filter_type {
902 int event_id;
903 struct event_format *event;
904 struct filter_arg *filter;
905};
906
907#define PEVENT_FILTER_ERROR_BUFSZ 1024
908
909struct event_filter {
910 struct pevent *pevent;
911 int filters;
912 struct filter_type *event_filters;
913 char error_buffer[PEVENT_FILTER_ERROR_BUFSZ];
914};
915
916struct event_filter *pevent_filter_alloc(struct pevent *pevent);
917
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
923
924enum filter_trivial_type {
925 FILTER_TRIVIAL_FALSE,
926 FILTER_TRIVIAL_TRUE,
927 FILTER_TRIVIAL_BOTH,
928};
929
930enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter,
931 const char *filter_str);
932
933enum pevent_errno pevent_filter_match(struct event_filter *filter,
934 struct pevent_record *record);
935
936int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err,
937 char *buf, size_t buflen);
938
939int pevent_event_filtered(struct event_filter *filter,
940 int event_id);
941
942void pevent_filter_reset(struct event_filter *filter);
943
944int pevent_filter_clear_trivial(struct event_filter *filter,
945 enum filter_trivial_type type);
946
947void pevent_filter_free(struct event_filter *filter);
948
949char *pevent_filter_make_string(struct event_filter *filter, int event_id);
950
951int pevent_filter_remove_event(struct event_filter *filter,
952 int event_id);
953
954int pevent_filter_event_has_trivial(struct event_filter *filter,
955 int event_id,
956 enum filter_trivial_type type);
957
958int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
959
960int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
961 enum filter_trivial_type type);
962
963int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
964
965#endif /* _PARSE_EVENTS_H */