blob: 863a0bbda7f1ba3add137fdac1a17f5a469a90a0 [file] [log] [blame]
Steven Rostedtf7d82352012-04-06 00:47:53 +02001/*
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, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20 */
21#ifndef _PARSE_EVENTS_H
22#define _PARSE_EVENTS_H
23
24#include <stdarg.h>
25#include <regex.h>
26
27#ifndef __unused
28#define __unused __attribute__ ((unused))
29#endif
30
31/* ----------------------- trace_seq ----------------------- */
32
33
34#ifndef TRACE_SEQ_BUF_SIZE
35#define TRACE_SEQ_BUF_SIZE 4096
36#endif
37
38#ifndef DEBUG_RECORD
39#define DEBUG_RECORD 0
40#endif
41
Steven Rostedt1c698182012-04-06 00:48:06 +020042struct pevent_record {
Steven Rostedtf7d82352012-04-06 00:47:53 +020043 unsigned long long ts;
44 unsigned long long offset;
45 long long missed_events; /* buffer dropped events before */
46 int record_size; /* size of binary record */
47 int size; /* size of data */
48 void *data;
49 int cpu;
50 int ref_count;
51 int locked; /* Do not free, even if ref_count is zero */
Steven Rostedtff1a70e2012-08-23 11:22:01 -040052 void *priv;
Steven Rostedtf7d82352012-04-06 00:47:53 +020053#if DEBUG_RECORD
Steven Rostedt1c698182012-04-06 00:48:06 +020054 struct pevent_record *prev;
55 struct pevent_record *next;
Steven Rostedtf7d82352012-04-06 00:47:53 +020056 long alloc_addr;
57#endif
58};
59
60/*
61 * Trace sequences are used to allow a function to call several other functions
62 * to create a string of data to use (up to a max of PAGE_SIZE).
63 */
64
65struct trace_seq {
66 char *buffer;
67 unsigned int buffer_size;
68 unsigned int len;
69 unsigned int readpos;
70};
71
72void trace_seq_init(struct trace_seq *s);
73void trace_seq_destroy(struct trace_seq *s);
74
75extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
76 __attribute__ ((format (printf, 2, 3)));
77extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
78 __attribute__ ((format (printf, 2, 0)));
79
80extern int trace_seq_puts(struct trace_seq *s, const char *str);
81extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
82
83extern void trace_seq_terminate(struct trace_seq *s);
84
85extern int trace_seq_do_printf(struct trace_seq *s);
86
87
88/* ----------------------- pevent ----------------------- */
89
90struct pevent;
91struct event_format;
92
93typedef int (*pevent_event_handler_func)(struct trace_seq *s,
Steven Rostedt1c698182012-04-06 00:48:06 +020094 struct pevent_record *record,
Steven Rostedtf7d82352012-04-06 00:47:53 +020095 struct event_format *event,
96 void *context);
97
98typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
99typedef int (*pevent_plugin_unload_func)(void);
100
101struct plugin_option {
102 struct plugin_option *next;
103 void *handle;
104 char *file;
105 char *name;
106 char *plugin_alias;
107 char *description;
108 char *value;
Steven Rostedtff1a70e2012-08-23 11:22:01 -0400109 void *priv;
Steven Rostedtf7d82352012-04-06 00:47:53 +0200110 int set;
111};
112
113/*
114 * Plugin hooks that can be called:
115 *
116 * PEVENT_PLUGIN_LOADER: (required)
117 * The function name to initialized the plugin.
118 *
119 * int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
120 *
121 * PEVENT_PLUGIN_UNLOADER: (optional)
122 * The function called just before unloading
123 *
124 * int PEVENT_PLUGIN_UNLOADER(void)
125 *
126 * PEVENT_PLUGIN_OPTIONS: (optional)
127 * Plugin options that can be set before loading
128 *
129 * struct plugin_option PEVENT_PLUGIN_OPTIONS[] = {
130 * {
131 * .name = "option-name",
132 * .plugin_alias = "overide-file-name", (optional)
133 * .description = "description of option to show users",
134 * },
135 * {
136 * .name = NULL,
137 * },
138 * };
139 *
140 * Array must end with .name = NULL;
141 *
142 *
143 * .plugin_alias is used to give a shorter name to access
144 * the vairable. Useful if a plugin handles more than one event.
145 *
146 * PEVENT_PLUGIN_ALIAS: (optional)
147 * The name to use for finding options (uses filename if not defined)
148 */
149#define PEVENT_PLUGIN_LOADER pevent_plugin_loader
150#define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader
151#define PEVENT_PLUGIN_OPTIONS pevent_plugin_options
152#define PEVENT_PLUGIN_ALIAS pevent_plugin_alias
153#define _MAKE_STR(x) #x
154#define MAKE_STR(x) _MAKE_STR(x)
155#define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER)
156#define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER)
157#define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS)
158#define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS)
159
160#define NSECS_PER_SEC 1000000000ULL
161#define NSECS_PER_USEC 1000ULL
162
163enum format_flags {
164 FIELD_IS_ARRAY = 1,
165 FIELD_IS_POINTER = 2,
166 FIELD_IS_SIGNED = 4,
167 FIELD_IS_STRING = 8,
168 FIELD_IS_DYNAMIC = 16,
169 FIELD_IS_LONG = 32,
Steven Rostedt668fe012012-04-06 00:47:55 +0200170 FIELD_IS_FLAG = 64,
171 FIELD_IS_SYMBOLIC = 128,
Steven Rostedtf7d82352012-04-06 00:47:53 +0200172};
173
174struct format_field {
175 struct format_field *next;
176 struct event_format *event;
177 char *type;
178 char *name;
179 int offset;
180 int size;
181 unsigned int arraylen;
182 unsigned int elementsize;
183 unsigned long flags;
184};
185
186struct format {
187 int nr_common;
188 int nr_fields;
189 struct format_field *common_fields;
190 struct format_field *fields;
191};
192
193struct print_arg_atom {
194 char *atom;
195};
196
197struct print_arg_string {
198 char *string;
199 int offset;
200};
201
202struct print_arg_field {
203 char *name;
204 struct format_field *field;
205};
206
207struct print_flag_sym {
208 struct print_flag_sym *next;
209 char *value;
210 char *str;
211};
212
213struct print_arg_typecast {
214 char *type;
215 struct print_arg *item;
216};
217
218struct print_arg_flags {
219 struct print_arg *field;
220 char *delim;
221 struct print_flag_sym *flags;
222};
223
224struct print_arg_symbol {
225 struct print_arg *field;
226 struct print_flag_sym *symbols;
227};
228
Namhyung Kime080e6f2012-06-27 09:41:41 +0900229struct print_arg_hex {
230 struct print_arg *field;
231 struct print_arg *size;
232};
233
Steven Rostedtf7d82352012-04-06 00:47:53 +0200234struct print_arg_dynarray {
235 struct format_field *field;
236 struct print_arg *index;
237};
238
239struct print_arg;
240
241struct print_arg_op {
242 char *op;
243 int prio;
244 struct print_arg *left;
245 struct print_arg *right;
246};
247
248struct pevent_function_handler;
249
250struct print_arg_func {
251 struct pevent_function_handler *func;
252 struct print_arg *args;
253};
254
255enum print_arg_type {
256 PRINT_NULL,
257 PRINT_ATOM,
258 PRINT_FIELD,
259 PRINT_FLAGS,
260 PRINT_SYMBOL,
Namhyung Kime080e6f2012-06-27 09:41:41 +0900261 PRINT_HEX,
Steven Rostedtf7d82352012-04-06 00:47:53 +0200262 PRINT_TYPE,
263 PRINT_STRING,
264 PRINT_BSTRING,
265 PRINT_DYNAMIC_ARRAY,
266 PRINT_OP,
267 PRINT_FUNC,
268};
269
270struct print_arg {
271 struct print_arg *next;
272 enum print_arg_type type;
273 union {
274 struct print_arg_atom atom;
275 struct print_arg_field field;
276 struct print_arg_typecast typecast;
277 struct print_arg_flags flags;
278 struct print_arg_symbol symbol;
Namhyung Kime080e6f2012-06-27 09:41:41 +0900279 struct print_arg_hex hex;
Steven Rostedtf7d82352012-04-06 00:47:53 +0200280 struct print_arg_func func;
281 struct print_arg_string string;
282 struct print_arg_op op;
283 struct print_arg_dynarray dynarray;
284 };
285};
286
287struct print_fmt {
288 char *format;
289 struct print_arg *args;
290};
291
292struct event_format {
293 struct pevent *pevent;
294 char *name;
295 int id;
296 int flags;
297 struct format format;
298 struct print_fmt print_fmt;
299 char *system;
300 pevent_event_handler_func handler;
301 void *context;
302};
303
304enum {
305 EVENT_FL_ISFTRACE = 0x01,
306 EVENT_FL_ISPRINT = 0x02,
307 EVENT_FL_ISBPRINT = 0x04,
308 EVENT_FL_ISFUNCENT = 0x10,
309 EVENT_FL_ISFUNCRET = 0x20,
310
311 EVENT_FL_FAILED = 0x80000000
312};
313
314enum event_sort_type {
315 EVENT_SORT_ID,
316 EVENT_SORT_NAME,
317 EVENT_SORT_SYSTEM,
318};
319
320enum event_type {
321 EVENT_ERROR,
322 EVENT_NONE,
323 EVENT_SPACE,
324 EVENT_NEWLINE,
325 EVENT_OP,
326 EVENT_DELIM,
327 EVENT_ITEM,
328 EVENT_DQUOTE,
329 EVENT_SQUOTE,
330};
331
332typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
333 unsigned long long *args);
334
335enum pevent_func_arg_type {
336 PEVENT_FUNC_ARG_VOID,
337 PEVENT_FUNC_ARG_INT,
338 PEVENT_FUNC_ARG_LONG,
339 PEVENT_FUNC_ARG_STRING,
340 PEVENT_FUNC_ARG_PTR,
341 PEVENT_FUNC_ARG_MAX_TYPES
342};
343
Steven Rostedt4dc10242012-04-06 00:47:57 +0200344enum pevent_flag {
345 PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */
346};
347
Namhyung Kim2f197b92012-08-22 16:00:30 +0900348#define PEVENT_ERRORS \
349 _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \
350 _PE(PARSE_EVENT_FAILED, "failed to parse event"), \
351 _PE(READ_ID_FAILED, "failed to read event id"), \
352 _PE(READ_FORMAT_FAILED, "failed to read event format"), \
353 _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \
354 _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace")
355
356#undef _PE
357#define _PE(__code, __str) PEVENT_ERRNO__ ## __code
Namhyung Kimbffddff2012-08-22 16:00:29 +0900358enum pevent_errno {
359 PEVENT_ERRNO__SUCCESS = 0,
360
361 /*
362 * Choose an arbitrary negative big number not to clash with standard
363 * errno since SUS requires the errno has distinct positive values.
364 * See 'Issue 6' in the link below.
365 *
366 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
367 */
368 __PEVENT_ERRNO__START = -100000,
369
Namhyung Kim2f197b92012-08-22 16:00:30 +0900370 PEVENT_ERRORS,
Namhyung Kimbffddff2012-08-22 16:00:29 +0900371
372 __PEVENT_ERRNO__END,
373};
Namhyung Kim2f197b92012-08-22 16:00:30 +0900374#undef _PE
Namhyung Kimbffddff2012-08-22 16:00:29 +0900375
Steven Rostedtf7d82352012-04-06 00:47:53 +0200376struct cmdline;
377struct cmdline_list;
378struct func_map;
379struct func_list;
380struct event_handler;
381
382struct pevent {
383 int ref_count;
384
385 int header_page_ts_offset;
386 int header_page_ts_size;
387 int header_page_size_offset;
388 int header_page_size_size;
389 int header_page_data_offset;
390 int header_page_data_size;
391 int header_page_overwrite;
392
393 int file_bigendian;
394 int host_bigendian;
395
396 int latency_format;
397
398 int old_format;
399
400 int cpus;
401 int long_size;
402
403 struct cmdline *cmdlines;
404 struct cmdline_list *cmdlist;
405 int cmdline_count;
406
407 struct func_map *func_map;
408 struct func_list *funclist;
409 unsigned int func_count;
410
411 struct printk_map *printk_map;
412 struct printk_list *printklist;
413 unsigned int printk_count;
414
Steven Rostedt4dc10242012-04-06 00:47:57 +0200415
Steven Rostedtf7d82352012-04-06 00:47:53 +0200416 struct event_format **events;
417 int nr_events;
418 struct event_format **sort_events;
419 enum event_sort_type last_type;
420
421 int type_offset;
422 int type_size;
423
424 int pid_offset;
425 int pid_size;
426
427 int pc_offset;
428 int pc_size;
429
430 int flags_offset;
431 int flags_size;
432
433 int ld_offset;
434 int ld_size;
435
436 int print_raw;
437
438 int test_filters;
439
Steven Rostedt4dc10242012-04-06 00:47:57 +0200440 int flags;
441
Steven Rostedtf7d82352012-04-06 00:47:53 +0200442 struct format_field *bprint_ip_field;
443 struct format_field *bprint_fmt_field;
444 struct format_field *bprint_buf_field;
445
446 struct event_handler *handlers;
447 struct pevent_function_handler *func_handlers;
448
449 /* cache */
450 struct event_format *last_event;
451};
452
Steven Rostedt4dc10242012-04-06 00:47:57 +0200453static inline void pevent_set_flag(struct pevent *pevent, int flag)
454{
455 pevent->flags |= flag;
456}
457
Steven Rostedtf7d82352012-04-06 00:47:53 +0200458static inline unsigned short
459__data2host2(struct pevent *pevent, unsigned short data)
460{
461 unsigned short swap;
462
463 if (pevent->host_bigendian == pevent->file_bigendian)
464 return data;
465
466 swap = ((data & 0xffULL) << 8) |
467 ((data & (0xffULL << 8)) >> 8);
468
469 return swap;
470}
471
472static inline unsigned int
473__data2host4(struct pevent *pevent, unsigned int data)
474{
475 unsigned int swap;
476
477 if (pevent->host_bigendian == pevent->file_bigendian)
478 return data;
479
480 swap = ((data & 0xffULL) << 24) |
481 ((data & (0xffULL << 8)) << 8) |
482 ((data & (0xffULL << 16)) >> 8) |
483 ((data & (0xffULL << 24)) >> 24);
484
485 return swap;
486}
487
488static inline unsigned long long
489__data2host8(struct pevent *pevent, unsigned long long data)
490{
491 unsigned long long swap;
492
493 if (pevent->host_bigendian == pevent->file_bigendian)
494 return data;
495
496 swap = ((data & 0xffULL) << 56) |
497 ((data & (0xffULL << 8)) << 40) |
498 ((data & (0xffULL << 16)) << 24) |
499 ((data & (0xffULL << 24)) << 8) |
500 ((data & (0xffULL << 32)) >> 8) |
501 ((data & (0xffULL << 40)) >> 24) |
502 ((data & (0xffULL << 48)) >> 40) |
503 ((data & (0xffULL << 56)) >> 56);
504
505 return swap;
506}
507
508#define data2host2(pevent, ptr) __data2host2(pevent, *(unsigned short *)(ptr))
509#define data2host4(pevent, ptr) __data2host4(pevent, *(unsigned int *)(ptr))
510#define data2host8(pevent, ptr) \
511({ \
512 unsigned long long __val; \
513 \
514 memcpy(&__val, (ptr), sizeof(unsigned long long)); \
515 __data2host8(pevent, __val); \
516})
517
518/* taken from kernel/trace/trace.h */
519enum trace_flag_type {
520 TRACE_FLAG_IRQS_OFF = 0x01,
521 TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
522 TRACE_FLAG_NEED_RESCHED = 0x04,
523 TRACE_FLAG_HARDIRQ = 0x08,
524 TRACE_FLAG_SOFTIRQ = 0x10,
525};
526
527int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
528int pevent_register_function(struct pevent *pevent, char *name,
529 unsigned long long addr, char *mod);
530int pevent_register_print_string(struct pevent *pevent, char *fmt,
531 unsigned long long addr);
532int pevent_pid_is_registered(struct pevent *pevent, int pid);
533
534void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
Steven Rostedt1c698182012-04-06 00:48:06 +0200535 struct pevent_record *record);
Steven Rostedtf7d82352012-04-06 00:47:53 +0200536
537int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
538 int long_size);
539
Namhyung Kimbffddff2012-08-22 16:00:29 +0900540enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
541 unsigned long size, const char *sys);
Steven Rostedtf7d82352012-04-06 00:47:53 +0200542
543void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
Steven Rostedt1c698182012-04-06 00:48:06 +0200544 const char *name, struct pevent_record *record,
Steven Rostedtf7d82352012-04-06 00:47:53 +0200545 int *len, int err);
546
547int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
Steven Rostedt1c698182012-04-06 00:48:06 +0200548 const char *name, struct pevent_record *record,
Steven Rostedtf7d82352012-04-06 00:47:53 +0200549 unsigned long long *val, int err);
550int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
Steven Rostedt1c698182012-04-06 00:48:06 +0200551 const char *name, struct pevent_record *record,
Steven Rostedtf7d82352012-04-06 00:47:53 +0200552 unsigned long long *val, int err);
553int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
Steven Rostedt1c698182012-04-06 00:48:06 +0200554 const char *name, struct pevent_record *record,
Steven Rostedtf7d82352012-04-06 00:47:53 +0200555 unsigned long long *val, int err);
556
557int pevent_print_num_field(struct trace_seq *s, const char *fmt,
558 struct event_format *event, const char *name,
Steven Rostedt1c698182012-04-06 00:48:06 +0200559 struct pevent_record *record, int err);
Steven Rostedtf7d82352012-04-06 00:47:53 +0200560
561int pevent_register_event_handler(struct pevent *pevent, int id, char *sys_name, char *event_name,
562 pevent_event_handler_func func, void *context);
563int pevent_register_print_function(struct pevent *pevent,
564 pevent_func_handler func,
565 enum pevent_func_arg_type ret_type,
566 char *name, ...);
567
568struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
569struct format_field *pevent_find_field(struct event_format *event, const char *name);
570struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
571
572const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
573unsigned long long
574pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
575unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
576int pevent_read_number_field(struct format_field *field, const void *data,
577 unsigned long long *value);
578
579struct event_format *pevent_find_event(struct pevent *pevent, int id);
580
581struct event_format *
582pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
583
584void pevent_data_lat_fmt(struct pevent *pevent,
Steven Rostedt1c698182012-04-06 00:48:06 +0200585 struct trace_seq *s, struct pevent_record *record);
586int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
Steven Rostedtf7d82352012-04-06 00:47:53 +0200587struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
Steven Rostedt1c698182012-04-06 00:48:06 +0200588int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
Steven Rostedtf7d82352012-04-06 00:47:53 +0200589const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
590void pevent_event_info(struct trace_seq *s, struct event_format *event,
Steven Rostedt1c698182012-04-06 00:48:06 +0200591 struct pevent_record *record);
Namhyung Kim2f197b92012-08-22 16:00:30 +0900592int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
593 char *buf, size_t buflen);
Steven Rostedtf7d82352012-04-06 00:47:53 +0200594
595struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
596struct format_field **pevent_event_common_fields(struct event_format *event);
597struct format_field **pevent_event_fields(struct event_format *event);
598
599static inline int pevent_get_cpus(struct pevent *pevent)
600{
601 return pevent->cpus;
602}
603
604static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
605{
606 pevent->cpus = cpus;
607}
608
609static inline int pevent_get_long_size(struct pevent *pevent)
610{
611 return pevent->long_size;
612}
613
614static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
615{
616 pevent->long_size = long_size;
617}
618
619static inline int pevent_is_file_bigendian(struct pevent *pevent)
620{
621 return pevent->file_bigendian;
622}
623
624static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
625{
626 pevent->file_bigendian = endian;
627}
628
629static inline int pevent_is_host_bigendian(struct pevent *pevent)
630{
631 return pevent->host_bigendian;
632}
633
634static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
635{
636 pevent->host_bigendian = endian;
637}
638
639static inline int pevent_is_latency_format(struct pevent *pevent)
640{
641 return pevent->latency_format;
642}
643
644static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
645{
646 pevent->latency_format = lat;
647}
648
649struct pevent *pevent_alloc(void);
650void pevent_free(struct pevent *pevent);
651void pevent_ref(struct pevent *pevent);
652void pevent_unref(struct pevent *pevent);
653
654/* access to the internal parser */
655void pevent_buffer_init(const char *buf, unsigned long long size);
656enum event_type pevent_read_token(char **tok);
657void pevent_free_token(char *token);
658int pevent_peek_char(void);
659const char *pevent_get_input_buf(void);
660unsigned long long pevent_get_input_buf_ptr(void);
661
662/* for debugging */
663void pevent_print_funcs(struct pevent *pevent);
664void pevent_print_printk(struct pevent *pevent);
665
666/* ----------------------- filtering ----------------------- */
667
668enum filter_boolean_type {
669 FILTER_FALSE,
670 FILTER_TRUE,
671};
672
673enum filter_op_type {
674 FILTER_OP_AND = 1,
675 FILTER_OP_OR,
676 FILTER_OP_NOT,
677};
678
679enum filter_cmp_type {
680 FILTER_CMP_NONE,
681 FILTER_CMP_EQ,
682 FILTER_CMP_NE,
683 FILTER_CMP_GT,
684 FILTER_CMP_LT,
685 FILTER_CMP_GE,
686 FILTER_CMP_LE,
687 FILTER_CMP_MATCH,
688 FILTER_CMP_NOT_MATCH,
689 FILTER_CMP_REGEX,
690 FILTER_CMP_NOT_REGEX,
691};
692
693enum filter_exp_type {
694 FILTER_EXP_NONE,
695 FILTER_EXP_ADD,
696 FILTER_EXP_SUB,
697 FILTER_EXP_MUL,
698 FILTER_EXP_DIV,
699 FILTER_EXP_MOD,
700 FILTER_EXP_RSHIFT,
701 FILTER_EXP_LSHIFT,
702 FILTER_EXP_AND,
703 FILTER_EXP_OR,
704 FILTER_EXP_XOR,
705 FILTER_EXP_NOT,
706};
707
708enum filter_arg_type {
709 FILTER_ARG_NONE,
710 FILTER_ARG_BOOLEAN,
711 FILTER_ARG_VALUE,
712 FILTER_ARG_FIELD,
713 FILTER_ARG_EXP,
714 FILTER_ARG_OP,
715 FILTER_ARG_NUM,
716 FILTER_ARG_STR,
717};
718
719enum filter_value_type {
720 FILTER_NUMBER,
721 FILTER_STRING,
722 FILTER_CHAR
723};
724
725struct fliter_arg;
726
727struct filter_arg_boolean {
728 enum filter_boolean_type value;
729};
730
731struct filter_arg_field {
732 struct format_field *field;
733};
734
735struct filter_arg_value {
736 enum filter_value_type type;
737 union {
738 char *str;
739 unsigned long long val;
740 };
741};
742
743struct filter_arg_op {
744 enum filter_op_type type;
745 struct filter_arg *left;
746 struct filter_arg *right;
747};
748
749struct filter_arg_exp {
750 enum filter_exp_type type;
751 struct filter_arg *left;
752 struct filter_arg *right;
753};
754
755struct filter_arg_num {
756 enum filter_cmp_type type;
757 struct filter_arg *left;
758 struct filter_arg *right;
759};
760
761struct filter_arg_str {
762 enum filter_cmp_type type;
763 struct format_field *field;
764 char *val;
765 char *buffer;
766 regex_t reg;
767};
768
769struct filter_arg {
770 enum filter_arg_type type;
771 union {
Steven Rostedt668fe012012-04-06 00:47:55 +0200772 struct filter_arg_boolean boolean;
Steven Rostedtf7d82352012-04-06 00:47:53 +0200773 struct filter_arg_field field;
774 struct filter_arg_value value;
775 struct filter_arg_op op;
776 struct filter_arg_exp exp;
777 struct filter_arg_num num;
778 struct filter_arg_str str;
779 };
780};
781
782struct filter_type {
783 int event_id;
784 struct event_format *event;
785 struct filter_arg *filter;
786};
787
788struct event_filter {
789 struct pevent *pevent;
790 int filters;
791 struct filter_type *event_filters;
792};
793
794struct event_filter *pevent_filter_alloc(struct pevent *pevent);
795
796#define FILTER_NONE -2
797#define FILTER_NOEXIST -1
798#define FILTER_MISS 0
799#define FILTER_MATCH 1
800
801enum filter_trivial_type {
802 FILTER_TRIVIAL_FALSE,
803 FILTER_TRIVIAL_TRUE,
804 FILTER_TRIVIAL_BOTH,
805};
806
807int pevent_filter_add_filter_str(struct event_filter *filter,
808 const char *filter_str,
809 char **error_str);
810
811
812int pevent_filter_match(struct event_filter *filter,
Steven Rostedt1c698182012-04-06 00:48:06 +0200813 struct pevent_record *record);
Steven Rostedtf7d82352012-04-06 00:47:53 +0200814
815int pevent_event_filtered(struct event_filter *filter,
816 int event_id);
817
818void pevent_filter_reset(struct event_filter *filter);
819
820void pevent_filter_clear_trivial(struct event_filter *filter,
821 enum filter_trivial_type type);
822
823void pevent_filter_free(struct event_filter *filter);
824
825char *pevent_filter_make_string(struct event_filter *filter, int event_id);
826
827int pevent_filter_remove_event(struct event_filter *filter,
828 int event_id);
829
830int pevent_filter_event_has_trivial(struct event_filter *filter,
831 int event_id,
832 enum filter_trivial_type type);
833
834int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
835
836int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
837 enum filter_trivial_type type);
838
839int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
840
841#endif /* _PARSE_EVENTS_H */