~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

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

Version: ~ [ linux-5.2-rc1 ] ~ [ linux-5.1.2 ] ~ [ linux-5.0.16 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.43 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.119 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.176 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.179 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.139 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.67 ] ~ [ 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-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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, 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 
 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                    *private;
 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_destroy(struct trace_seq *s);
 74 
 75 extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
 76         __attribute__ ((format (printf, 2, 3)));
 77 extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
 78         __attribute__ ((format (printf, 2, 0)));
 79 
 80 extern int trace_seq_puts(struct trace_seq *s, const char *str);
 81 extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
 82 
 83 extern void trace_seq_terminate(struct trace_seq *s);
 84 
 85 extern int trace_seq_do_printf(struct trace_seq *s);
 86 
 87 
 88 /* ----------------------- pevent ----------------------- */
 89 
 90 struct pevent;
 91 struct event_format;
 92 
 93 typedef int (*pevent_event_handler_func)(struct trace_seq *s,
 94                                          struct pevent_record *record,
 95                                          struct event_format *event,
 96                                          void *context);
 97 
 98 typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
 99 typedef int (*pevent_plugin_unload_func)(void);
100 
101 struct 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;
109         void                            *private;
110         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 
163 enum 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,
170         FIELD_IS_FLAG           = 64,
171         FIELD_IS_SYMBOLIC       = 128,
172 };
173 
174 struct 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 
186 struct format {
187         int                     nr_common;
188         int                     nr_fields;
189         struct format_field     *common_fields;
190         struct format_field     *fields;
191 };
192 
193 struct print_arg_atom {
194         char                    *atom;
195 };
196 
197 struct print_arg_string {
198         char                    *string;
199         int                     offset;
200 };
201 
202 struct print_arg_field {
203         char                    *name;
204         struct format_field     *field;
205 };
206 
207 struct print_flag_sym {
208         struct print_flag_sym   *next;
209         char                    *value;
210         char                    *str;
211 };
212 
213 struct print_arg_typecast {
214         char                    *type;
215         struct print_arg        *item;
216 };
217 
218 struct print_arg_flags {
219         struct print_arg        *field;
220         char                    *delim;
221         struct print_flag_sym   *flags;
222 };
223 
224 struct print_arg_symbol {
225         struct print_arg        *field;
226         struct print_flag_sym   *symbols;
227 };
228 
229 struct print_arg_dynarray {
230         struct format_field     *field;
231         struct print_arg        *index;
232 };
233 
234 struct print_arg;
235 
236 struct print_arg_op {
237         char                    *op;
238         int                     prio;
239         struct print_arg        *left;
240         struct print_arg        *right;
241 };
242 
243 struct pevent_function_handler;
244 
245 struct print_arg_func {
246         struct pevent_function_handler  *func;
247         struct print_arg                *args;
248 };
249 
250 enum print_arg_type {
251         PRINT_NULL,
252         PRINT_ATOM,
253         PRINT_FIELD,
254         PRINT_FLAGS,
255         PRINT_SYMBOL,
256         PRINT_TYPE,
257         PRINT_STRING,
258         PRINT_BSTRING,
259         PRINT_DYNAMIC_ARRAY,
260         PRINT_OP,
261         PRINT_FUNC,
262 };
263 
264 struct print_arg {
265         struct print_arg                *next;
266         enum print_arg_type             type;
267         union {
268                 struct print_arg_atom           atom;
269                 struct print_arg_field          field;
270                 struct print_arg_typecast       typecast;
271                 struct print_arg_flags          flags;
272                 struct print_arg_symbol         symbol;
273                 struct print_arg_func           func;
274                 struct print_arg_string         string;
275                 struct print_arg_op             op;
276                 struct print_arg_dynarray       dynarray;
277         };
278 };
279 
280 struct print_fmt {
281         char                    *format;
282         struct print_arg        *args;
283 };
284 
285 struct event_format {
286         struct pevent           *pevent;
287         char                    *name;
288         int                     id;
289         int                     flags;
290         struct format           format;
291         struct print_fmt        print_fmt;
292         char                    *system;
293         pevent_event_handler_func handler;
294         void                    *context;
295 };
296 
297 enum {
298         EVENT_FL_ISFTRACE       = 0x01,
299         EVENT_FL_ISPRINT        = 0x02,
300         EVENT_FL_ISBPRINT       = 0x04,
301         EVENT_FL_ISFUNCENT      = 0x10,
302         EVENT_FL_ISFUNCRET      = 0x20,
303 
304         EVENT_FL_FAILED         = 0x80000000
305 };
306 
307 enum event_sort_type {
308         EVENT_SORT_ID,
309         EVENT_SORT_NAME,
310         EVENT_SORT_SYSTEM,
311 };
312 
313 enum event_type {
314         EVENT_ERROR,
315         EVENT_NONE,
316         EVENT_SPACE,
317         EVENT_NEWLINE,
318         EVENT_OP,
319         EVENT_DELIM,
320         EVENT_ITEM,
321         EVENT_DQUOTE,
322         EVENT_SQUOTE,
323 };
324 
325 typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
326                                              unsigned long long *args);
327 
328 enum pevent_func_arg_type {
329         PEVENT_FUNC_ARG_VOID,
330         PEVENT_FUNC_ARG_INT,
331         PEVENT_FUNC_ARG_LONG,
332         PEVENT_FUNC_ARG_STRING,
333         PEVENT_FUNC_ARG_PTR,
334         PEVENT_FUNC_ARG_MAX_TYPES
335 };
336 
337 enum pevent_flag {
338         PEVENT_NSEC_OUTPUT              = 1,    /* output in NSECS */
339 };
340 
341 struct cmdline;
342 struct cmdline_list;
343 struct func_map;
344 struct func_list;
345 struct event_handler;
346 
347 struct pevent {
348         int ref_count;
349 
350         int header_page_ts_offset;
351         int header_page_ts_size;
352         int header_page_size_offset;
353         int header_page_size_size;
354         int header_page_data_offset;
355         int header_page_data_size;
356         int header_page_overwrite;
357 
358         int file_bigendian;
359         int host_bigendian;
360 
361         int latency_format;
362 
363         int old_format;
364 
365         int cpus;
366         int long_size;
367 
368         struct cmdline *cmdlines;
369         struct cmdline_list *cmdlist;
370         int cmdline_count;
371 
372         struct func_map *func_map;
373         struct func_list *funclist;
374         unsigned int func_count;
375 
376         struct printk_map *printk_map;
377         struct printk_list *printklist;
378         unsigned int printk_count;
379 
380 
381         struct event_format **events;
382         int nr_events;
383         struct event_format **sort_events;
384         enum event_sort_type last_type;
385 
386         int type_offset;
387         int type_size;
388 
389         int pid_offset;
390         int pid_size;
391 
392         int pc_offset;
393         int pc_size;
394 
395         int flags_offset;
396         int flags_size;
397 
398         int ld_offset;
399         int ld_size;
400 
401         int print_raw;
402 
403         int test_filters;
404 
405         int flags;
406 
407         struct format_field *bprint_ip_field;
408         struct format_field *bprint_fmt_field;
409         struct format_field *bprint_buf_field;
410 
411         struct event_handler *handlers;
412         struct pevent_function_handler *func_handlers;
413 
414         /* cache */
415         struct event_format *last_event;
416 };
417 
418 static inline void pevent_set_flag(struct pevent *pevent, int flag)
419 {
420         pevent->flags |= flag;
421 }
422 
423 static inline unsigned short
424 __data2host2(struct pevent *pevent, unsigned short data)
425 {
426         unsigned short swap;
427 
428         if (pevent->host_bigendian == pevent->file_bigendian)
429                 return data;
430 
431         swap = ((data & 0xffULL) << 8) |
432                 ((data & (0xffULL << 8)) >> 8);
433 
434         return swap;
435 }
436 
437 static inline unsigned int
438 __data2host4(struct pevent *pevent, unsigned int data)
439 {
440         unsigned int swap;
441 
442         if (pevent->host_bigendian == pevent->file_bigendian)
443                 return data;
444 
445         swap = ((data & 0xffULL) << 24) |
446                 ((data & (0xffULL << 8)) << 8) |
447                 ((data & (0xffULL << 16)) >> 8) |
448                 ((data & (0xffULL << 24)) >> 24);
449 
450         return swap;
451 }
452 
453 static inline unsigned long long
454 __data2host8(struct pevent *pevent, unsigned long long data)
455 {
456         unsigned long long swap;
457 
458         if (pevent->host_bigendian == pevent->file_bigendian)
459                 return data;
460 
461         swap = ((data & 0xffULL) << 56) |
462                 ((data & (0xffULL << 8)) << 40) |
463                 ((data & (0xffULL << 16)) << 24) |
464                 ((data & (0xffULL << 24)) << 8) |
465                 ((data & (0xffULL << 32)) >> 8) |
466                 ((data & (0xffULL << 40)) >> 24) |
467                 ((data & (0xffULL << 48)) >> 40) |
468                 ((data & (0xffULL << 56)) >> 56);
469 
470         return swap;
471 }
472 
473 #define data2host2(pevent, ptr)         __data2host2(pevent, *(unsigned short *)(ptr))
474 #define data2host4(pevent, ptr)         __data2host4(pevent, *(unsigned int *)(ptr))
475 #define data2host8(pevent, ptr)                                 \
476 ({                                                              \
477         unsigned long long __val;                               \
478                                                                 \
479         memcpy(&__val, (ptr), sizeof(unsigned long long));      \
480         __data2host8(pevent, __val);                            \
481 })
482 
483 /* taken from kernel/trace/trace.h */
484 enum trace_flag_type {
485         TRACE_FLAG_IRQS_OFF             = 0x01,
486         TRACE_FLAG_IRQS_NOSUPPORT       = 0x02,
487         TRACE_FLAG_NEED_RESCHED         = 0x04,
488         TRACE_FLAG_HARDIRQ              = 0x08,
489         TRACE_FLAG_SOFTIRQ              = 0x10,
490 };
491 
492 int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
493 int pevent_register_function(struct pevent *pevent, char *name,
494                              unsigned long long addr, char *mod);
495 int pevent_register_print_string(struct pevent *pevent, char *fmt,
496                                  unsigned long long addr);
497 int pevent_pid_is_registered(struct pevent *pevent, int pid);
498 
499 void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
500                         struct pevent_record *record);
501 
502 int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
503                              int long_size);
504 
505 int pevent_parse_event(struct pevent *pevent, const char *buf,
506                        unsigned long size, const char *sys);
507 
508 void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
509                            const char *name, struct pevent_record *record,
510                            int *len, int err);
511 
512 int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
513                          const char *name, struct pevent_record *record,
514                          unsigned long long *val, int err);
515 int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
516                                 const char *name, struct pevent_record *record,
517                                 unsigned long long *val, int err);
518 int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
519                              const char *name, struct pevent_record *record,
520                              unsigned long long *val, int err);
521 
522 int pevent_print_num_field(struct trace_seq *s, const char *fmt,
523                            struct event_format *event, const char *name,
524                            struct pevent_record *record, int err);
525 
526 int pevent_register_event_handler(struct pevent *pevent, int id, char *sys_name, char *event_name,
527                                   pevent_event_handler_func func, void *context);
528 int pevent_register_print_function(struct pevent *pevent,
529                                    pevent_func_handler func,
530                                    enum pevent_func_arg_type ret_type,
531                                    char *name, ...);
532 
533 struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
534 struct format_field *pevent_find_field(struct event_format *event, const char *name);
535 struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
536 
537 const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
538 unsigned long long
539 pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
540 unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
541 int pevent_read_number_field(struct format_field *field, const void *data,
542                              unsigned long long *value);
543 
544 struct event_format *pevent_find_event(struct pevent *pevent, int id);
545 
546 struct event_format *
547 pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
548 
549 void pevent_data_lat_fmt(struct pevent *pevent,
550                          struct trace_seq *s, struct pevent_record *record);
551 int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
552 struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
553 int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
554 const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
555 void pevent_event_info(struct trace_seq *s, struct event_format *event,
556                        struct pevent_record *record);
557 
558 struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
559 struct format_field **pevent_event_common_fields(struct event_format *event);
560 struct format_field **pevent_event_fields(struct event_format *event);
561 
562 static inline int pevent_get_cpus(struct pevent *pevent)
563 {
564         return pevent->cpus;
565 }
566 
567 static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
568 {
569         pevent->cpus = cpus;
570 }
571 
572 static inline int pevent_get_long_size(struct pevent *pevent)
573 {
574         return pevent->long_size;
575 }
576 
577 static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
578 {
579         pevent->long_size = long_size;
580 }
581 
582 static inline int pevent_is_file_bigendian(struct pevent *pevent)
583 {
584         return pevent->file_bigendian;
585 }
586 
587 static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
588 {
589         pevent->file_bigendian = endian;
590 }
591 
592 static inline int pevent_is_host_bigendian(struct pevent *pevent)
593 {
594         return pevent->host_bigendian;
595 }
596 
597 static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
598 {
599         pevent->host_bigendian = endian;
600 }
601 
602 static inline int pevent_is_latency_format(struct pevent *pevent)
603 {
604         return pevent->latency_format;
605 }
606 
607 static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
608 {
609         pevent->latency_format = lat;
610 }
611 
612 struct pevent *pevent_alloc(void);
613 void pevent_free(struct pevent *pevent);
614 void pevent_ref(struct pevent *pevent);
615 void pevent_unref(struct pevent *pevent);
616 
617 /* access to the internal parser */
618 void pevent_buffer_init(const char *buf, unsigned long long size);
619 enum event_type pevent_read_token(char **tok);
620 void pevent_free_token(char *token);
621 int pevent_peek_char(void);
622 const char *pevent_get_input_buf(void);
623 unsigned long long pevent_get_input_buf_ptr(void);
624 
625 /* for debugging */
626 void pevent_print_funcs(struct pevent *pevent);
627 void pevent_print_printk(struct pevent *pevent);
628 
629 /* ----------------------- filtering ----------------------- */
630 
631 enum filter_boolean_type {
632         FILTER_FALSE,
633         FILTER_TRUE,
634 };
635 
636 enum filter_op_type {
637         FILTER_OP_AND = 1,
638         FILTER_OP_OR,
639         FILTER_OP_NOT,
640 };
641 
642 enum filter_cmp_type {
643         FILTER_CMP_NONE,
644         FILTER_CMP_EQ,
645         FILTER_CMP_NE,
646         FILTER_CMP_GT,
647         FILTER_CMP_LT,
648         FILTER_CMP_GE,
649         FILTER_CMP_LE,
650         FILTER_CMP_MATCH,
651         FILTER_CMP_NOT_MATCH,
652         FILTER_CMP_REGEX,
653         FILTER_CMP_NOT_REGEX,
654 };
655 
656 enum filter_exp_type {
657         FILTER_EXP_NONE,
658         FILTER_EXP_ADD,
659         FILTER_EXP_SUB,
660         FILTER_EXP_MUL,
661         FILTER_EXP_DIV,
662         FILTER_EXP_MOD,
663         FILTER_EXP_RSHIFT,
664         FILTER_EXP_LSHIFT,
665         FILTER_EXP_AND,
666         FILTER_EXP_OR,
667         FILTER_EXP_XOR,
668         FILTER_EXP_NOT,
669 };
670 
671 enum filter_arg_type {
672         FILTER_ARG_NONE,
673         FILTER_ARG_BOOLEAN,
674         FILTER_ARG_VALUE,
675         FILTER_ARG_FIELD,
676         FILTER_ARG_EXP,
677         FILTER_ARG_OP,
678         FILTER_ARG_NUM,
679         FILTER_ARG_STR,
680 };
681 
682 enum filter_value_type {
683         FILTER_NUMBER,
684         FILTER_STRING,
685         FILTER_CHAR
686 };
687 
688 struct fliter_arg;
689 
690 struct filter_arg_boolean {
691         enum filter_boolean_type        value;
692 };
693 
694 struct filter_arg_field {
695         struct format_field     *field;
696 };
697 
698 struct filter_arg_value {
699         enum filter_value_type  type;
700         union {
701                 char                    *str;
702                 unsigned long long      val;
703         };
704 };
705 
706 struct filter_arg_op {
707         enum filter_op_type     type;
708         struct filter_arg       *left;
709         struct filter_arg       *right;
710 };
711 
712 struct filter_arg_exp {
713         enum filter_exp_type    type;
714         struct filter_arg       *left;
715         struct filter_arg       *right;
716 };
717 
718 struct filter_arg_num {
719         enum filter_cmp_type    type;
720         struct filter_arg       *left;
721         struct filter_arg       *right;
722 };
723 
724 struct filter_arg_str {
725         enum filter_cmp_type    type;
726         struct format_field     *field;
727         char                    *val;
728         char                    *buffer;
729         regex_t                 reg;
730 };
731 
732 struct filter_arg {
733         enum filter_arg_type    type;
734         union {
735                 struct filter_arg_boolean       boolean;
736                 struct filter_arg_field         field;
737                 struct filter_arg_value         value;
738                 struct filter_arg_op            op;
739                 struct filter_arg_exp           exp;
740                 struct filter_arg_num           num;
741                 struct filter_arg_str           str;
742         };
743 };
744 
745 struct filter_type {
746         int                     event_id;
747         struct event_format     *event;
748         struct filter_arg       *filter;
749 };
750 
751 struct event_filter {
752         struct pevent           *pevent;
753         int                     filters;
754         struct filter_type      *event_filters;
755 };
756 
757 struct event_filter *pevent_filter_alloc(struct pevent *pevent);
758 
759 #define FILTER_NONE             -2
760 #define FILTER_NOEXIST          -1
761 #define FILTER_MISS             0
762 #define FILTER_MATCH            1
763 
764 enum filter_trivial_type {
765         FILTER_TRIVIAL_FALSE,
766         FILTER_TRIVIAL_TRUE,
767         FILTER_TRIVIAL_BOTH,
768 };
769 
770 int pevent_filter_add_filter_str(struct event_filter *filter,
771                                  const char *filter_str,
772                                  char **error_str);
773 
774 
775 int pevent_filter_match(struct event_filter *filter,
776                         struct pevent_record *record);
777 
778 int pevent_event_filtered(struct event_filter *filter,
779                           int event_id);
780 
781 void pevent_filter_reset(struct event_filter *filter);
782 
783 void pevent_filter_clear_trivial(struct event_filter *filter,
784                                  enum filter_trivial_type type);
785 
786 void pevent_filter_free(struct event_filter *filter);
787 
788 char *pevent_filter_make_string(struct event_filter *filter, int event_id);
789 
790 int pevent_filter_remove_event(struct event_filter *filter,
791                                int event_id);
792 
793 int pevent_filter_event_has_trivial(struct event_filter *filter,
794                                     int event_id,
795                                     enum filter_trivial_type type);
796 
797 int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
798 
799 int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
800                           enum filter_trivial_type type);
801 
802 int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
803 
804 #endif /* _PARSE_EVENTS_H */
805 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp