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TOMOYO Linux Cross Reference
Linux/tools/lib/traceevent/event-parse.h

Version: ~ [ linux-5.8 ] ~ [ linux-5.7.12 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.55 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.136 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.191 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.232 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.232 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  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 <regex.h>
 26 
 27 #ifndef __maybe_unused
 28 #define __maybe_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 
 42 struct pevent_record {
 43         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 */
 52         void                    *priv;
 53 #if DEBUG_RECORD
 54         struct pevent_record    *prev;
 55         struct pevent_record    *next;
 56         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 
 65 struct trace_seq {
 66         char                    *buffer;
 67         unsigned int            buffer_size;
 68         unsigned int            len;
 69         unsigned int            readpos;
 70 };
 71 
 72 void trace_seq_init(struct trace_seq *s);
 73 void trace_seq_reset(struct trace_seq *s);
 74 void trace_seq_destroy(struct trace_seq *s);
 75 
 76 extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
 77         __attribute__ ((format (printf, 2, 3)));
 78 extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
 79         __attribute__ ((format (printf, 2, 0)));
 80 
 81 extern int trace_seq_puts(struct trace_seq *s, const char *str);
 82 extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
 83 
 84 extern void trace_seq_terminate(struct trace_seq *s);
 85 
 86 extern int trace_seq_do_printf(struct trace_seq *s);
 87 
 88 
 89 /* ----------------------- pevent ----------------------- */
 90 
 91 struct pevent;
 92 struct event_format;
 93 
 94 typedef int (*pevent_event_handler_func)(struct trace_seq *s,
 95                                          struct pevent_record *record,
 96                                          struct event_format *event,
 97                                          void *context);
 98 
 99 typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
100 typedef int (*pevent_plugin_unload_func)(void);
101 
102 struct plugin_option {
103         struct plugin_option            *next;
104         void                            *handle;
105         char                            *file;
106         char                            *name;
107         char                            *plugin_alias;
108         char                            *description;
109         char                            *value;
110         void                            *priv;
111         int                             set;
112 };
113 
114 /*
115  * Plugin hooks that can be called:
116  *
117  * PEVENT_PLUGIN_LOADER:  (required)
118  *   The function name to initialized the plugin.
119  *
120  *   int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
121  *
122  * PEVENT_PLUGIN_UNLOADER:  (optional)
123  *   The function called just before unloading
124  *
125  *   int PEVENT_PLUGIN_UNLOADER(void)
126  *
127  * PEVENT_PLUGIN_OPTIONS:  (optional)
128  *   Plugin options that can be set before loading
129  *
130  *   struct plugin_option PEVENT_PLUGIN_OPTIONS[] = {
131  *      {
132  *              .name = "option-name",
133  *              .plugin_alias = "overide-file-name", (optional)
134  *              .description = "description of option to show users",
135  *      },
136  *      {
137  *              .name = NULL,
138  *      },
139  *   };
140  *
141  *   Array must end with .name = NULL;
142  *
143  *
144  *   .plugin_alias is used to give a shorter name to access
145  *   the vairable. Useful if a plugin handles more than one event.
146  *
147  * PEVENT_PLUGIN_ALIAS: (optional)
148  *   The name to use for finding options (uses filename if not defined)
149  */
150 #define PEVENT_PLUGIN_LOADER pevent_plugin_loader
151 #define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader
152 #define PEVENT_PLUGIN_OPTIONS pevent_plugin_options
153 #define PEVENT_PLUGIN_ALIAS pevent_plugin_alias
154 #define _MAKE_STR(x)    #x
155 #define MAKE_STR(x)     _MAKE_STR(x)
156 #define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER)
157 #define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER)
158 #define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS)
159 #define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS)
160 
161 #define NSECS_PER_SEC           1000000000ULL
162 #define NSECS_PER_USEC          1000ULL
163 
164 enum format_flags {
165         FIELD_IS_ARRAY          = 1,
166         FIELD_IS_POINTER        = 2,
167         FIELD_IS_SIGNED         = 4,
168         FIELD_IS_STRING         = 8,
169         FIELD_IS_DYNAMIC        = 16,
170         FIELD_IS_LONG           = 32,
171         FIELD_IS_FLAG           = 64,
172         FIELD_IS_SYMBOLIC       = 128,
173 };
174 
175 struct format_field {
176         struct format_field     *next;
177         struct event_format     *event;
178         char                    *type;
179         char                    *name;
180         int                     offset;
181         int                     size;
182         unsigned int            arraylen;
183         unsigned int            elementsize;
184         unsigned long           flags;
185 };
186 
187 struct format {
188         int                     nr_common;
189         int                     nr_fields;
190         struct format_field     *common_fields;
191         struct format_field     *fields;
192 };
193 
194 struct print_arg_atom {
195         char                    *atom;
196 };
197 
198 struct print_arg_string {
199         char                    *string;
200         int                     offset;
201 };
202 
203 struct print_arg_field {
204         char                    *name;
205         struct format_field     *field;
206 };
207 
208 struct print_flag_sym {
209         struct print_flag_sym   *next;
210         char                    *value;
211         char                    *str;
212 };
213 
214 struct print_arg_typecast {
215         char                    *type;
216         struct print_arg        *item;
217 };
218 
219 struct print_arg_flags {
220         struct print_arg        *field;
221         char                    *delim;
222         struct print_flag_sym   *flags;
223 };
224 
225 struct print_arg_symbol {
226         struct print_arg        *field;
227         struct print_flag_sym   *symbols;
228 };
229 
230 struct print_arg_hex {
231         struct print_arg        *field;
232         struct print_arg        *size;
233 };
234 
235 struct print_arg_dynarray {
236         struct format_field     *field;
237         struct print_arg        *index;
238 };
239 
240 struct print_arg;
241 
242 struct print_arg_op {
243         char                    *op;
244         int                     prio;
245         struct print_arg        *left;
246         struct print_arg        *right;
247 };
248 
249 struct pevent_function_handler;
250 
251 struct print_arg_func {
252         struct pevent_function_handler  *func;
253         struct print_arg                *args;
254 };
255 
256 enum print_arg_type {
257         PRINT_NULL,
258         PRINT_ATOM,
259         PRINT_FIELD,
260         PRINT_FLAGS,
261         PRINT_SYMBOL,
262         PRINT_HEX,
263         PRINT_TYPE,
264         PRINT_STRING,
265         PRINT_BSTRING,
266         PRINT_DYNAMIC_ARRAY,
267         PRINT_OP,
268         PRINT_FUNC,
269 };
270 
271 struct print_arg {
272         struct print_arg                *next;
273         enum print_arg_type             type;
274         union {
275                 struct print_arg_atom           atom;
276                 struct print_arg_field          field;
277                 struct print_arg_typecast       typecast;
278                 struct print_arg_flags          flags;
279                 struct print_arg_symbol         symbol;
280                 struct print_arg_hex            hex;
281                 struct print_arg_func           func;
282                 struct print_arg_string         string;
283                 struct print_arg_op             op;
284                 struct print_arg_dynarray       dynarray;
285         };
286 };
287 
288 struct print_fmt {
289         char                    *format;
290         struct print_arg        *args;
291 };
292 
293 struct event_format {
294         struct pevent           *pevent;
295         char                    *name;
296         int                     id;
297         int                     flags;
298         struct format           format;
299         struct print_fmt        print_fmt;
300         char                    *system;
301         pevent_event_handler_func handler;
302         void                    *context;
303 };
304 
305 enum {
306         EVENT_FL_ISFTRACE       = 0x01,
307         EVENT_FL_ISPRINT        = 0x02,
308         EVENT_FL_ISBPRINT       = 0x04,
309         EVENT_FL_ISFUNCENT      = 0x10,
310         EVENT_FL_ISFUNCRET      = 0x20,
311         EVENT_FL_NOHANDLE       = 0x40,
312         EVENT_FL_PRINTRAW       = 0x80,
313 
314         EVENT_FL_FAILED         = 0x80000000
315 };
316 
317 enum event_sort_type {
318         EVENT_SORT_ID,
319         EVENT_SORT_NAME,
320         EVENT_SORT_SYSTEM,
321 };
322 
323 enum event_type {
324         EVENT_ERROR,
325         EVENT_NONE,
326         EVENT_SPACE,
327         EVENT_NEWLINE,
328         EVENT_OP,
329         EVENT_DELIM,
330         EVENT_ITEM,
331         EVENT_DQUOTE,
332         EVENT_SQUOTE,
333 };
334 
335 typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
336                                              unsigned long long *args);
337 
338 enum pevent_func_arg_type {
339         PEVENT_FUNC_ARG_VOID,
340         PEVENT_FUNC_ARG_INT,
341         PEVENT_FUNC_ARG_LONG,
342         PEVENT_FUNC_ARG_STRING,
343         PEVENT_FUNC_ARG_PTR,
344         PEVENT_FUNC_ARG_MAX_TYPES
345 };
346 
347 enum pevent_flag {
348         PEVENT_NSEC_OUTPUT              = 1,    /* output in NSECS */
349 };
350 
351 #define PEVENT_ERRORS                                                         \
352         _PE(MEM_ALLOC_FAILED,   "failed to allocate memory"),                 \
353         _PE(PARSE_EVENT_FAILED, "failed to parse event"),                     \
354         _PE(READ_ID_FAILED,     "failed to read event id"),                   \
355         _PE(READ_FORMAT_FAILED, "failed to read event format"),               \
356         _PE(READ_PRINT_FAILED,  "failed to read event print fmt"),            \
357         _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\
358         _PE(INVALID_ARG_TYPE,   "invalid argument type")
359 
360 #undef _PE
361 #define _PE(__code, __str) PEVENT_ERRNO__ ## __code
362 enum pevent_errno {
363         PEVENT_ERRNO__SUCCESS                   = 0,
364 
365         /*
366          * Choose an arbitrary negative big number not to clash with standard
367          * errno since SUS requires the errno has distinct positive values.
368          * See 'Issue 6' in the link below.
369          *
370          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
371          */
372         __PEVENT_ERRNO__START                   = -100000,
373 
374         PEVENT_ERRORS,
375 
376         __PEVENT_ERRNO__END,
377 };
378 #undef _PE
379 
380 struct cmdline;
381 struct cmdline_list;
382 struct func_map;
383 struct func_list;
384 struct event_handler;
385 
386 struct pevent {
387         int ref_count;
388 
389         int header_page_ts_offset;
390         int header_page_ts_size;
391         int header_page_size_offset;
392         int header_page_size_size;
393         int header_page_data_offset;
394         int header_page_data_size;
395         int header_page_overwrite;
396 
397         int file_bigendian;
398         int host_bigendian;
399 
400         int latency_format;
401 
402         int old_format;
403 
404         int cpus;
405         int long_size;
406         int page_size;
407 
408         struct cmdline *cmdlines;
409         struct cmdline_list *cmdlist;
410         int cmdline_count;
411 
412         struct func_map *func_map;
413         struct func_list *funclist;
414         unsigned int func_count;
415 
416         struct printk_map *printk_map;
417         struct printk_list *printklist;
418         unsigned int printk_count;
419 
420 
421         struct event_format **events;
422         int nr_events;
423         struct event_format **sort_events;
424         enum event_sort_type last_type;
425 
426         int type_offset;
427         int type_size;
428 
429         int pid_offset;
430         int pid_size;
431 
432         int pc_offset;
433         int pc_size;
434 
435         int flags_offset;
436         int flags_size;
437 
438         int ld_offset;
439         int ld_size;
440 
441         int print_raw;
442 
443         int test_filters;
444 
445         int flags;
446 
447         struct format_field *bprint_ip_field;
448         struct format_field *bprint_fmt_field;
449         struct format_field *bprint_buf_field;
450 
451         struct event_handler *handlers;
452         struct pevent_function_handler *func_handlers;
453 
454         /* cache */
455         struct event_format *last_event;
456 
457         char *trace_clock;
458 };
459 
460 static inline void pevent_set_flag(struct pevent *pevent, int flag)
461 {
462         pevent->flags |= flag;
463 }
464 
465 static inline unsigned short
466 __data2host2(struct pevent *pevent, unsigned short data)
467 {
468         unsigned short swap;
469 
470         if (pevent->host_bigendian == pevent->file_bigendian)
471                 return data;
472 
473         swap = ((data & 0xffULL) << 8) |
474                 ((data & (0xffULL << 8)) >> 8);
475 
476         return swap;
477 }
478 
479 static inline unsigned int
480 __data2host4(struct pevent *pevent, unsigned int data)
481 {
482         unsigned int swap;
483 
484         if (pevent->host_bigendian == pevent->file_bigendian)
485                 return data;
486 
487         swap = ((data & 0xffULL) << 24) |
488                 ((data & (0xffULL << 8)) << 8) |
489                 ((data & (0xffULL << 16)) >> 8) |
490                 ((data & (0xffULL << 24)) >> 24);
491 
492         return swap;
493 }
494 
495 static inline unsigned long long
496 __data2host8(struct pevent *pevent, unsigned long long data)
497 {
498         unsigned long long swap;
499 
500         if (pevent->host_bigendian == pevent->file_bigendian)
501                 return data;
502 
503         swap = ((data & 0xffULL) << 56) |
504                 ((data & (0xffULL << 8)) << 40) |
505                 ((data & (0xffULL << 16)) << 24) |
506                 ((data & (0xffULL << 24)) << 8) |
507                 ((data & (0xffULL << 32)) >> 8) |
508                 ((data & (0xffULL << 40)) >> 24) |
509                 ((data & (0xffULL << 48)) >> 40) |
510                 ((data & (0xffULL << 56)) >> 56);
511 
512         return swap;
513 }
514 
515 #define data2host2(pevent, ptr)         __data2host2(pevent, *(unsigned short *)(ptr))
516 #define data2host4(pevent, ptr)         __data2host4(pevent, *(unsigned int *)(ptr))
517 #define data2host8(pevent, ptr)                                 \
518 ({                                                              \
519         unsigned long long __val;                               \
520                                                                 \
521         memcpy(&__val, (ptr), sizeof(unsigned long long));      \
522         __data2host8(pevent, __val);                            \
523 })
524 
525 /* taken from kernel/trace/trace.h */
526 enum trace_flag_type {
527         TRACE_FLAG_IRQS_OFF             = 0x01,
528         TRACE_FLAG_IRQS_NOSUPPORT       = 0x02,
529         TRACE_FLAG_NEED_RESCHED         = 0x04,
530         TRACE_FLAG_HARDIRQ              = 0x08,
531         TRACE_FLAG_SOFTIRQ              = 0x10,
532 };
533 
534 int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
535 void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock);
536 int pevent_register_function(struct pevent *pevent, char *name,
537                              unsigned long long addr, char *mod);
538 int pevent_register_print_string(struct pevent *pevent, const char *fmt,
539                                  unsigned long long addr);
540 int pevent_pid_is_registered(struct pevent *pevent, int pid);
541 
542 void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
543                         struct pevent_record *record, bool use_trace_clock);
544 
545 int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
546                              int long_size);
547 
548 enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
549                                      unsigned long size, const char *sys);
550 enum pevent_errno pevent_parse_format(struct event_format **eventp, const char *buf,
551                                       unsigned long size, const char *sys);
552 void pevent_free_format(struct event_format *event);
553 
554 void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
555                            const char *name, struct pevent_record *record,
556                            int *len, int err);
557 
558 int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
559                          const char *name, struct pevent_record *record,
560                          unsigned long long *val, int err);
561 int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
562                                 const char *name, struct pevent_record *record,
563                                 unsigned long long *val, int err);
564 int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
565                              const char *name, struct pevent_record *record,
566                              unsigned long long *val, int err);
567 
568 int pevent_print_num_field(struct trace_seq *s, const char *fmt,
569                            struct event_format *event, const char *name,
570                            struct pevent_record *record, int err);
571 
572 int pevent_print_func_field(struct trace_seq *s, const char *fmt,
573                            struct event_format *event, const char *name,
574                            struct pevent_record *record, int err);
575 
576 int pevent_register_event_handler(struct pevent *pevent, int id,
577                                   const char *sys_name, const char *event_name,
578                                   pevent_event_handler_func func, void *context);
579 int pevent_register_print_function(struct pevent *pevent,
580                                    pevent_func_handler func,
581                                    enum pevent_func_arg_type ret_type,
582                                    char *name, ...);
583 
584 struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
585 struct format_field *pevent_find_field(struct event_format *event, const char *name);
586 struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
587 
588 const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
589 unsigned long long
590 pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
591 unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
592 int pevent_read_number_field(struct format_field *field, const void *data,
593                              unsigned long long *value);
594 
595 struct event_format *pevent_find_event(struct pevent *pevent, int id);
596 
597 struct event_format *
598 pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
599 
600 void pevent_data_lat_fmt(struct pevent *pevent,
601                          struct trace_seq *s, struct pevent_record *record);
602 int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
603 struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
604 int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
605 const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
606 void pevent_event_info(struct trace_seq *s, struct event_format *event,
607                        struct pevent_record *record);
608 int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
609                     char *buf, size_t buflen);
610 
611 struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
612 struct format_field **pevent_event_common_fields(struct event_format *event);
613 struct format_field **pevent_event_fields(struct event_format *event);
614 
615 static inline int pevent_get_cpus(struct pevent *pevent)
616 {
617         return pevent->cpus;
618 }
619 
620 static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
621 {
622         pevent->cpus = cpus;
623 }
624 
625 static inline int pevent_get_long_size(struct pevent *pevent)
626 {
627         return pevent->long_size;
628 }
629 
630 static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
631 {
632         pevent->long_size = long_size;
633 }
634 
635 static inline int pevent_get_page_size(struct pevent *pevent)
636 {
637         return pevent->page_size;
638 }
639 
640 static inline void pevent_set_page_size(struct pevent *pevent, int _page_size)
641 {
642         pevent->page_size = _page_size;
643 }
644 
645 static inline int pevent_is_file_bigendian(struct pevent *pevent)
646 {
647         return pevent->file_bigendian;
648 }
649 
650 static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
651 {
652         pevent->file_bigendian = endian;
653 }
654 
655 static inline int pevent_is_host_bigendian(struct pevent *pevent)
656 {
657         return pevent->host_bigendian;
658 }
659 
660 static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
661 {
662         pevent->host_bigendian = endian;
663 }
664 
665 static inline int pevent_is_latency_format(struct pevent *pevent)
666 {
667         return pevent->latency_format;
668 }
669 
670 static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
671 {
672         pevent->latency_format = lat;
673 }
674 
675 struct pevent *pevent_alloc(void);
676 void pevent_free(struct pevent *pevent);
677 void pevent_ref(struct pevent *pevent);
678 void pevent_unref(struct pevent *pevent);
679 
680 /* access to the internal parser */
681 void pevent_buffer_init(const char *buf, unsigned long long size);
682 enum event_type pevent_read_token(char **tok);
683 void pevent_free_token(char *token);
684 int pevent_peek_char(void);
685 const char *pevent_get_input_buf(void);
686 unsigned long long pevent_get_input_buf_ptr(void);
687 
688 /* for debugging */
689 void pevent_print_funcs(struct pevent *pevent);
690 void pevent_print_printk(struct pevent *pevent);
691 
692 /* ----------------------- filtering ----------------------- */
693 
694 enum filter_boolean_type {
695         FILTER_FALSE,
696         FILTER_TRUE,
697 };
698 
699 enum filter_op_type {
700         FILTER_OP_AND = 1,
701         FILTER_OP_OR,
702         FILTER_OP_NOT,
703 };
704 
705 enum filter_cmp_type {
706         FILTER_CMP_NONE,
707         FILTER_CMP_EQ,
708         FILTER_CMP_NE,
709         FILTER_CMP_GT,
710         FILTER_CMP_LT,
711         FILTER_CMP_GE,
712         FILTER_CMP_LE,
713         FILTER_CMP_MATCH,
714         FILTER_CMP_NOT_MATCH,
715         FILTER_CMP_REGEX,
716         FILTER_CMP_NOT_REGEX,
717 };
718 
719 enum filter_exp_type {
720         FILTER_EXP_NONE,
721         FILTER_EXP_ADD,
722         FILTER_EXP_SUB,
723         FILTER_EXP_MUL,
724         FILTER_EXP_DIV,
725         FILTER_EXP_MOD,
726         FILTER_EXP_RSHIFT,
727         FILTER_EXP_LSHIFT,
728         FILTER_EXP_AND,
729         FILTER_EXP_OR,
730         FILTER_EXP_XOR,
731         FILTER_EXP_NOT,
732 };
733 
734 enum filter_arg_type {
735         FILTER_ARG_NONE,
736         FILTER_ARG_BOOLEAN,
737         FILTER_ARG_VALUE,
738         FILTER_ARG_FIELD,
739         FILTER_ARG_EXP,
740         FILTER_ARG_OP,
741         FILTER_ARG_NUM,
742         FILTER_ARG_STR,
743 };
744 
745 enum filter_value_type {
746         FILTER_NUMBER,
747         FILTER_STRING,
748         FILTER_CHAR
749 };
750 
751 struct fliter_arg;
752 
753 struct filter_arg_boolean {
754         enum filter_boolean_type        value;
755 };
756 
757 struct filter_arg_field {
758         struct format_field     *field;
759 };
760 
761 struct filter_arg_value {
762         enum filter_value_type  type;
763         union {
764                 char                    *str;
765                 unsigned long long      val;
766         };
767 };
768 
769 struct filter_arg_op {
770         enum filter_op_type     type;
771         struct filter_arg       *left;
772         struct filter_arg       *right;
773 };
774 
775 struct filter_arg_exp {
776         enum filter_exp_type    type;
777         struct filter_arg       *left;
778         struct filter_arg       *right;
779 };
780 
781 struct filter_arg_num {
782         enum filter_cmp_type    type;
783         struct filter_arg       *left;
784         struct filter_arg       *right;
785 };
786 
787 struct filter_arg_str {
788         enum filter_cmp_type    type;
789         struct format_field     *field;
790         char                    *val;
791         char                    *buffer;
792         regex_t                 reg;
793 };
794 
795 struct filter_arg {
796         enum filter_arg_type    type;
797         union {
798                 struct filter_arg_boolean       boolean;
799                 struct filter_arg_field         field;
800                 struct filter_arg_value         value;
801                 struct filter_arg_op            op;
802                 struct filter_arg_exp           exp;
803                 struct filter_arg_num           num;
804                 struct filter_arg_str           str;
805         };
806 };
807 
808 struct filter_type {
809         int                     event_id;
810         struct event_format     *event;
811         struct filter_arg       *filter;
812 };
813 
814 struct event_filter {
815         struct pevent           *pevent;
816         int                     filters;
817         struct filter_type      *event_filters;
818 };
819 
820 struct event_filter *pevent_filter_alloc(struct pevent *pevent);
821 
822 #define FILTER_NONE             -2
823 #define FILTER_NOEXIST          -1
824 #define FILTER_MISS             0
825 #define FILTER_MATCH            1
826 
827 enum filter_trivial_type {
828         FILTER_TRIVIAL_FALSE,
829         FILTER_TRIVIAL_TRUE,
830         FILTER_TRIVIAL_BOTH,
831 };
832 
833 int pevent_filter_add_filter_str(struct event_filter *filter,
834                                  const char *filter_str,
835                                  char **error_str);
836 
837 
838 int pevent_filter_match(struct event_filter *filter,
839                         struct pevent_record *record);
840 
841 int pevent_event_filtered(struct event_filter *filter,
842                           int event_id);
843 
844 void pevent_filter_reset(struct event_filter *filter);
845 
846 void pevent_filter_clear_trivial(struct event_filter *filter,
847                                  enum filter_trivial_type type);
848 
849 void pevent_filter_free(struct event_filter *filter);
850 
851 char *pevent_filter_make_string(struct event_filter *filter, int event_id);
852 
853 int pevent_filter_remove_event(struct event_filter *filter,
854                                int event_id);
855 
856 int pevent_filter_event_has_trivial(struct event_filter *filter,
857                                     int event_id,
858                                     enum filter_trivial_type type);
859 
860 int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
861 
862 int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
863                           enum filter_trivial_type type);
864 
865 int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
866 
867 #endif /* _PARSE_EVENTS_H */
868 

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