2 * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation;
8 * version 2.1 of the License (not later!)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, see <http://www.gnu.org/licenses>
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20 * The parts for function graph printing was taken and modified from the
21 * Linux Kernel that were written by
22 * - Copyright (C) 2009 Frederic Weisbecker,
23 * Frederic Weisbecker gave his permission to relicense the code to
24 * the Lesser General Public License.
35 #include <netinet/ip6.h>
36 #include "event-parse.h"
37 #include "event-utils.h"
39 static const char *input_buf
;
40 static unsigned long long input_buf_ptr
;
41 static unsigned long long input_buf_siz
;
43 static int is_flag_field
;
44 static int is_symbolic_field
;
46 static int show_warning
= 1;
48 #define do_warning(fmt, ...) \
51 warning(fmt, ##__VA_ARGS__); \
54 #define do_warning_event(event, fmt, ...) \
60 warning("[%s:%s] " fmt, event->system, \
61 event->name, ##__VA_ARGS__); \
63 warning(fmt, ##__VA_ARGS__); \
66 static void init_input_buf(const char *buf
, unsigned long long size
)
73 const char *pevent_get_input_buf(void)
78 unsigned long long pevent_get_input_buf_ptr(void)
83 struct event_handler
{
84 struct event_handler
*next
;
87 const char *event_name
;
88 pevent_event_handler_func func
;
92 struct pevent_func_params
{
93 struct pevent_func_params
*next
;
94 enum pevent_func_arg_type type
;
97 struct pevent_function_handler
{
98 struct pevent_function_handler
*next
;
99 enum pevent_func_arg_type ret_type
;
101 pevent_func_handler func
;
102 struct pevent_func_params
*params
;
106 static unsigned long long
107 process_defined_func(struct trace_seq
*s
, void *data
, int size
,
108 struct event_format
*event
, struct print_arg
*arg
);
110 static void free_func_handle(struct pevent_function_handler
*func
);
113 * pevent_buffer_init - init buffer for parsing
114 * @buf: buffer to parse
115 * @size: the size of the buffer
117 * For use with pevent_read_token(), this initializes the internal
118 * buffer that pevent_read_token() will parse.
120 void pevent_buffer_init(const char *buf
, unsigned long long size
)
122 init_input_buf(buf
, size
);
125 void breakpoint(void)
131 struct print_arg
*alloc_arg(void)
133 return calloc(1, sizeof(struct print_arg
));
141 static int cmdline_cmp(const void *a
, const void *b
)
143 const struct cmdline
*ca
= a
;
144 const struct cmdline
*cb
= b
;
146 if (ca
->pid
< cb
->pid
)
148 if (ca
->pid
> cb
->pid
)
154 struct cmdline_list
{
155 struct cmdline_list
*next
;
160 static int cmdline_init(struct pevent
*pevent
)
162 struct cmdline_list
*cmdlist
= pevent
->cmdlist
;
163 struct cmdline_list
*item
;
164 struct cmdline
*cmdlines
;
167 cmdlines
= malloc(sizeof(*cmdlines
) * pevent
->cmdline_count
);
173 cmdlines
[i
].pid
= cmdlist
->pid
;
174 cmdlines
[i
].comm
= cmdlist
->comm
;
177 cmdlist
= cmdlist
->next
;
181 qsort(cmdlines
, pevent
->cmdline_count
, sizeof(*cmdlines
), cmdline_cmp
);
183 pevent
->cmdlines
= cmdlines
;
184 pevent
->cmdlist
= NULL
;
189 static const char *find_cmdline(struct pevent
*pevent
, int pid
)
191 const struct cmdline
*comm
;
197 if (!pevent
->cmdlines
&& cmdline_init(pevent
))
198 return "<not enough memory for cmdlines!>";
202 comm
= bsearch(&key
, pevent
->cmdlines
, pevent
->cmdline_count
,
203 sizeof(*pevent
->cmdlines
), cmdline_cmp
);
211 * pevent_pid_is_registered - return if a pid has a cmdline registered
212 * @pevent: handle for the pevent
213 * @pid: The pid to check if it has a cmdline registered with.
215 * Returns 1 if the pid has a cmdline mapped to it
218 int pevent_pid_is_registered(struct pevent
*pevent
, int pid
)
220 const struct cmdline
*comm
;
226 if (!pevent
->cmdlines
&& cmdline_init(pevent
))
231 comm
= bsearch(&key
, pevent
->cmdlines
, pevent
->cmdline_count
,
232 sizeof(*pevent
->cmdlines
), cmdline_cmp
);
240 * If the command lines have been converted to an array, then
241 * we must add this pid. This is much slower than when cmdlines
242 * are added before the array is initialized.
244 static int add_new_comm(struct pevent
*pevent
, const char *comm
, int pid
)
246 struct cmdline
*cmdlines
= pevent
->cmdlines
;
247 const struct cmdline
*cmdline
;
253 /* avoid duplicates */
256 cmdline
= bsearch(&key
, pevent
->cmdlines
, pevent
->cmdline_count
,
257 sizeof(*pevent
->cmdlines
), cmdline_cmp
);
263 cmdlines
= realloc(cmdlines
, sizeof(*cmdlines
) * (pevent
->cmdline_count
+ 1));
269 cmdlines
[pevent
->cmdline_count
].comm
= strdup(comm
);
270 if (!cmdlines
[pevent
->cmdline_count
].comm
) {
276 cmdlines
[pevent
->cmdline_count
].pid
= pid
;
278 if (cmdlines
[pevent
->cmdline_count
].comm
)
279 pevent
->cmdline_count
++;
281 qsort(cmdlines
, pevent
->cmdline_count
, sizeof(*cmdlines
), cmdline_cmp
);
282 pevent
->cmdlines
= cmdlines
;
288 * pevent_register_comm - register a pid / comm mapping
289 * @pevent: handle for the pevent
290 * @comm: the command line to register
291 * @pid: the pid to map the command line to
293 * This adds a mapping to search for command line names with
294 * a given pid. The comm is duplicated.
296 int pevent_register_comm(struct pevent
*pevent
, const char *comm
, int pid
)
298 struct cmdline_list
*item
;
300 if (pevent
->cmdlines
)
301 return add_new_comm(pevent
, comm
, pid
);
303 item
= malloc(sizeof(*item
));
308 item
->comm
= strdup(comm
);
310 item
->comm
= strdup("<...>");
316 item
->next
= pevent
->cmdlist
;
318 pevent
->cmdlist
= item
;
319 pevent
->cmdline_count
++;
324 int pevent_register_trace_clock(struct pevent
*pevent
, const char *trace_clock
)
326 pevent
->trace_clock
= strdup(trace_clock
);
327 if (!pevent
->trace_clock
) {
335 unsigned long long addr
;
341 struct func_list
*next
;
342 unsigned long long addr
;
347 static int func_cmp(const void *a
, const void *b
)
349 const struct func_map
*fa
= a
;
350 const struct func_map
*fb
= b
;
352 if (fa
->addr
< fb
->addr
)
354 if (fa
->addr
> fb
->addr
)
361 * We are searching for a record in between, not an exact
364 static int func_bcmp(const void *a
, const void *b
)
366 const struct func_map
*fa
= a
;
367 const struct func_map
*fb
= b
;
369 if ((fa
->addr
== fb
->addr
) ||
371 (fa
->addr
> fb
->addr
&&
372 fa
->addr
< (fb
+1)->addr
))
375 if (fa
->addr
< fb
->addr
)
381 static int func_map_init(struct pevent
*pevent
)
383 struct func_list
*funclist
;
384 struct func_list
*item
;
385 struct func_map
*func_map
;
388 func_map
= malloc(sizeof(*func_map
) * (pevent
->func_count
+ 1));
392 funclist
= pevent
->funclist
;
396 func_map
[i
].func
= funclist
->func
;
397 func_map
[i
].addr
= funclist
->addr
;
398 func_map
[i
].mod
= funclist
->mod
;
401 funclist
= funclist
->next
;
405 qsort(func_map
, pevent
->func_count
, sizeof(*func_map
), func_cmp
);
408 * Add a special record at the end.
410 func_map
[pevent
->func_count
].func
= NULL
;
411 func_map
[pevent
->func_count
].addr
= 0;
412 func_map
[pevent
->func_count
].mod
= NULL
;
414 pevent
->func_map
= func_map
;
415 pevent
->funclist
= NULL
;
420 static struct func_map
*
421 __find_func(struct pevent
*pevent
, unsigned long long addr
)
423 struct func_map
*func
;
426 if (!pevent
->func_map
)
427 func_map_init(pevent
);
431 func
= bsearch(&key
, pevent
->func_map
, pevent
->func_count
,
432 sizeof(*pevent
->func_map
), func_bcmp
);
437 struct func_resolver
{
438 pevent_func_resolver_t
*func
;
444 * pevent_set_function_resolver - set an alternative function resolver
445 * @pevent: handle for the pevent
446 * @resolver: function to be used
447 * @priv: resolver function private state.
449 * Some tools may have already a way to resolve kernel functions, allow them to
450 * keep using it instead of duplicating all the entries inside
453 int pevent_set_function_resolver(struct pevent
*pevent
,
454 pevent_func_resolver_t
*func
, void *priv
)
456 struct func_resolver
*resolver
= malloc(sizeof(*resolver
));
458 if (resolver
== NULL
)
461 resolver
->func
= func
;
462 resolver
->priv
= priv
;
464 free(pevent
->func_resolver
);
465 pevent
->func_resolver
= resolver
;
471 * pevent_reset_function_resolver - reset alternative function resolver
472 * @pevent: handle for the pevent
474 * Stop using whatever alternative resolver was set, use the default
477 void pevent_reset_function_resolver(struct pevent
*pevent
)
479 free(pevent
->func_resolver
);
480 pevent
->func_resolver
= NULL
;
483 static struct func_map
*
484 find_func(struct pevent
*pevent
, unsigned long long addr
)
486 struct func_map
*map
;
488 if (!pevent
->func_resolver
)
489 return __find_func(pevent
, addr
);
491 map
= &pevent
->func_resolver
->map
;
494 map
->func
= pevent
->func_resolver
->func(pevent
->func_resolver
->priv
,
495 &map
->addr
, &map
->mod
);
496 if (map
->func
== NULL
)
503 * pevent_find_function - find a function by a given address
504 * @pevent: handle for the pevent
505 * @addr: the address to find the function with
507 * Returns a pointer to the function stored that has the given
508 * address. Note, the address does not have to be exact, it
509 * will select the function that would contain the address.
511 const char *pevent_find_function(struct pevent
*pevent
, unsigned long long addr
)
513 struct func_map
*map
;
515 map
= find_func(pevent
, addr
);
523 * pevent_find_function_address - find a function address by a given address
524 * @pevent: handle for the pevent
525 * @addr: the address to find the function with
527 * Returns the address the function starts at. This can be used in
528 * conjunction with pevent_find_function to print both the function
529 * name and the function offset.
532 pevent_find_function_address(struct pevent
*pevent
, unsigned long long addr
)
534 struct func_map
*map
;
536 map
= find_func(pevent
, addr
);
544 * pevent_register_function - register a function with a given address
545 * @pevent: handle for the pevent
546 * @function: the function name to register
547 * @addr: the address the function starts at
548 * @mod: the kernel module the function may be in (NULL for none)
550 * This registers a function name with an address and module.
551 * The @func passed in is duplicated.
553 int pevent_register_function(struct pevent
*pevent
, char *func
,
554 unsigned long long addr
, char *mod
)
556 struct func_list
*item
= malloc(sizeof(*item
));
561 item
->next
= pevent
->funclist
;
562 item
->func
= strdup(func
);
567 item
->mod
= strdup(mod
);
574 pevent
->funclist
= item
;
575 pevent
->func_count
++;
589 * pevent_print_funcs - print out the stored functions
590 * @pevent: handle for the pevent
592 * This prints out the stored functions.
594 void pevent_print_funcs(struct pevent
*pevent
)
598 if (!pevent
->func_map
)
599 func_map_init(pevent
);
601 for (i
= 0; i
< (int)pevent
->func_count
; i
++) {
603 pevent
->func_map
[i
].addr
,
604 pevent
->func_map
[i
].func
);
605 if (pevent
->func_map
[i
].mod
)
606 printf(" [%s]\n", pevent
->func_map
[i
].mod
);
613 unsigned long long addr
;
618 struct printk_list
*next
;
619 unsigned long long addr
;
623 static int printk_cmp(const void *a
, const void *b
)
625 const struct printk_map
*pa
= a
;
626 const struct printk_map
*pb
= b
;
628 if (pa
->addr
< pb
->addr
)
630 if (pa
->addr
> pb
->addr
)
636 static int printk_map_init(struct pevent
*pevent
)
638 struct printk_list
*printklist
;
639 struct printk_list
*item
;
640 struct printk_map
*printk_map
;
643 printk_map
= malloc(sizeof(*printk_map
) * (pevent
->printk_count
+ 1));
647 printklist
= pevent
->printklist
;
651 printk_map
[i
].printk
= printklist
->printk
;
652 printk_map
[i
].addr
= printklist
->addr
;
655 printklist
= printklist
->next
;
659 qsort(printk_map
, pevent
->printk_count
, sizeof(*printk_map
), printk_cmp
);
661 pevent
->printk_map
= printk_map
;
662 pevent
->printklist
= NULL
;
667 static struct printk_map
*
668 find_printk(struct pevent
*pevent
, unsigned long long addr
)
670 struct printk_map
*printk
;
671 struct printk_map key
;
673 if (!pevent
->printk_map
&& printk_map_init(pevent
))
678 printk
= bsearch(&key
, pevent
->printk_map
, pevent
->printk_count
,
679 sizeof(*pevent
->printk_map
), printk_cmp
);
685 * pevent_register_print_string - register a string by its address
686 * @pevent: handle for the pevent
687 * @fmt: the string format to register
688 * @addr: the address the string was located at
690 * This registers a string by the address it was stored in the kernel.
691 * The @fmt passed in is duplicated.
693 int pevent_register_print_string(struct pevent
*pevent
, const char *fmt
,
694 unsigned long long addr
)
696 struct printk_list
*item
= malloc(sizeof(*item
));
702 item
->next
= pevent
->printklist
;
705 /* Strip off quotes and '\n' from the end */
708 item
->printk
= strdup(fmt
);
712 p
= item
->printk
+ strlen(item
->printk
) - 1;
717 if (strcmp(p
, "\\n") == 0)
720 pevent
->printklist
= item
;
721 pevent
->printk_count
++;
732 * pevent_print_printk - print out the stored strings
733 * @pevent: handle for the pevent
735 * This prints the string formats that were stored.
737 void pevent_print_printk(struct pevent
*pevent
)
741 if (!pevent
->printk_map
)
742 printk_map_init(pevent
);
744 for (i
= 0; i
< (int)pevent
->printk_count
; i
++) {
745 printf("%016llx %s\n",
746 pevent
->printk_map
[i
].addr
,
747 pevent
->printk_map
[i
].printk
);
751 static struct event_format
*alloc_event(void)
753 return calloc(1, sizeof(struct event_format
));
756 static int add_event(struct pevent
*pevent
, struct event_format
*event
)
759 struct event_format
**events
= realloc(pevent
->events
, sizeof(event
) *
760 (pevent
->nr_events
+ 1));
764 pevent
->events
= events
;
766 for (i
= 0; i
< pevent
->nr_events
; i
++) {
767 if (pevent
->events
[i
]->id
> event
->id
)
770 if (i
< pevent
->nr_events
)
771 memmove(&pevent
->events
[i
+ 1],
773 sizeof(event
) * (pevent
->nr_events
- i
));
775 pevent
->events
[i
] = event
;
778 event
->pevent
= pevent
;
783 static int event_item_type(enum event_type type
)
786 case EVENT_ITEM
... EVENT_SQUOTE
:
788 case EVENT_ERROR
... EVENT_DELIM
:
794 static void free_flag_sym(struct print_flag_sym
*fsym
)
796 struct print_flag_sym
*next
;
807 static void free_arg(struct print_arg
*arg
)
809 struct print_arg
*farg
;
816 free(arg
->atom
.atom
);
819 free(arg
->field
.name
);
822 free_arg(arg
->flags
.field
);
823 free(arg
->flags
.delim
);
824 free_flag_sym(arg
->flags
.flags
);
827 free_arg(arg
->symbol
.field
);
828 free_flag_sym(arg
->symbol
.symbols
);
831 free_arg(arg
->hex
.field
);
832 free_arg(arg
->hex
.size
);
834 case PRINT_INT_ARRAY
:
835 free_arg(arg
->int_array
.field
);
836 free_arg(arg
->int_array
.count
);
837 free_arg(arg
->int_array
.el_size
);
840 free(arg
->typecast
.type
);
841 free_arg(arg
->typecast
.item
);
845 free(arg
->string
.string
);
848 free(arg
->bitmask
.bitmask
);
850 case PRINT_DYNAMIC_ARRAY
:
851 case PRINT_DYNAMIC_ARRAY_LEN
:
852 free(arg
->dynarray
.index
);
856 free_arg(arg
->op
.left
);
857 free_arg(arg
->op
.right
);
860 while (arg
->func
.args
) {
861 farg
= arg
->func
.args
;
862 arg
->func
.args
= farg
->next
;
875 static enum event_type
get_type(int ch
)
878 return EVENT_NEWLINE
;
881 if (isalnum(ch
) || ch
== '_')
889 if (ch
== '(' || ch
== ')' || ch
== ',')
895 static int __read_char(void)
897 if (input_buf_ptr
>= input_buf_siz
)
900 return input_buf
[input_buf_ptr
++];
903 static int __peek_char(void)
905 if (input_buf_ptr
>= input_buf_siz
)
908 return input_buf
[input_buf_ptr
];
912 * pevent_peek_char - peek at the next character that will be read
914 * Returns the next character read, or -1 if end of buffer.
916 int pevent_peek_char(void)
918 return __peek_char();
921 static int extend_token(char **tok
, char *buf
, int size
)
923 char *newtok
= realloc(*tok
, size
);
940 static enum event_type
force_token(const char *str
, char **tok
);
942 static enum event_type
__read_token(char **tok
)
945 int ch
, last_ch
, quote_ch
, next_ch
;
948 enum event_type type
;
958 if (type
== EVENT_NONE
)
966 if (asprintf(tok
, "%c", ch
) < 0)
974 next_ch
= __peek_char();
975 if (next_ch
== '>') {
976 buf
[i
++] = __read_char();
989 buf
[i
++] = __read_char();
1001 default: /* what should we do instead? */
1011 buf
[i
++] = __read_char();
1016 /* don't keep quotes */
1022 if (i
== (BUFSIZ
- 1)) {
1026 if (extend_token(tok
, buf
, tok_size
) < 0)
1033 /* the '\' '\' will cancel itself */
1034 if (ch
== '\\' && last_ch
== '\\')
1036 } while (ch
!= quote_ch
|| last_ch
== '\\');
1037 /* remove the last quote */
1041 * For strings (double quotes) check the next token.
1042 * If it is another string, concatinate the two.
1044 if (type
== EVENT_DQUOTE
) {
1045 unsigned long long save_input_buf_ptr
= input_buf_ptr
;
1049 } while (isspace(ch
));
1052 input_buf_ptr
= save_input_buf_ptr
;
1057 case EVENT_ERROR
... EVENT_SPACE
:
1063 while (get_type(__peek_char()) == type
) {
1064 if (i
== (BUFSIZ
- 1)) {
1068 if (extend_token(tok
, buf
, tok_size
) < 0)
1078 if (extend_token(tok
, buf
, tok_size
+ i
+ 1) < 0)
1081 if (type
== EVENT_ITEM
) {
1083 * Older versions of the kernel has a bug that
1084 * creates invalid symbols and will break the mac80211
1085 * parsing. This is a work around to that bug.
1087 * See Linux kernel commit:
1088 * 811cb50baf63461ce0bdb234927046131fc7fa8b
1090 if (strcmp(*tok
, "LOCAL_PR_FMT") == 0) {
1093 return force_token("\"\%s\" ", tok
);
1094 } else if (strcmp(*tok
, "STA_PR_FMT") == 0) {
1097 return force_token("\" sta:%pM\" ", tok
);
1098 } else if (strcmp(*tok
, "VIF_PR_FMT") == 0) {
1101 return force_token("\" vif:%p(%d)\" ", tok
);
1108 static enum event_type
force_token(const char *str
, char **tok
)
1110 const char *save_input_buf
;
1111 unsigned long long save_input_buf_ptr
;
1112 unsigned long long save_input_buf_siz
;
1113 enum event_type type
;
1115 /* save off the current input pointers */
1116 save_input_buf
= input_buf
;
1117 save_input_buf_ptr
= input_buf_ptr
;
1118 save_input_buf_siz
= input_buf_siz
;
1120 init_input_buf(str
, strlen(str
));
1122 type
= __read_token(tok
);
1124 /* reset back to original token */
1125 input_buf
= save_input_buf
;
1126 input_buf_ptr
= save_input_buf_ptr
;
1127 input_buf_siz
= save_input_buf_siz
;
1132 static void free_token(char *tok
)
1138 static enum event_type
read_token(char **tok
)
1140 enum event_type type
;
1143 type
= __read_token(tok
);
1144 if (type
!= EVENT_SPACE
)
1156 * pevent_read_token - access to utilites to use the pevent parser
1157 * @tok: The token to return
1159 * This will parse tokens from the string given by
1160 * pevent_init_data().
1162 * Returns the token type.
1164 enum event_type
pevent_read_token(char **tok
)
1166 return read_token(tok
);
1170 * pevent_free_token - free a token returned by pevent_read_token
1171 * @token: the token to free
1173 void pevent_free_token(char *token
)
1179 static enum event_type
read_token_item(char **tok
)
1181 enum event_type type
;
1184 type
= __read_token(tok
);
1185 if (type
!= EVENT_SPACE
&& type
!= EVENT_NEWLINE
)
1196 static int test_type(enum event_type type
, enum event_type expect
)
1198 if (type
!= expect
) {
1199 do_warning("Error: expected type %d but read %d",
1206 static int test_type_token(enum event_type type
, const char *token
,
1207 enum event_type expect
, const char *expect_tok
)
1209 if (type
!= expect
) {
1210 do_warning("Error: expected type %d but read %d",
1215 if (strcmp(token
, expect_tok
) != 0) {
1216 do_warning("Error: expected '%s' but read '%s'",
1223 static int __read_expect_type(enum event_type expect
, char **tok
, int newline_ok
)
1225 enum event_type type
;
1228 type
= read_token(tok
);
1230 type
= read_token_item(tok
);
1231 return test_type(type
, expect
);
1234 static int read_expect_type(enum event_type expect
, char **tok
)
1236 return __read_expect_type(expect
, tok
, 1);
1239 static int __read_expected(enum event_type expect
, const char *str
,
1242 enum event_type type
;
1247 type
= read_token(&token
);
1249 type
= read_token_item(&token
);
1251 ret
= test_type_token(type
, token
, expect
, str
);
1258 static int read_expected(enum event_type expect
, const char *str
)
1260 return __read_expected(expect
, str
, 1);
1263 static int read_expected_item(enum event_type expect
, const char *str
)
1265 return __read_expected(expect
, str
, 0);
1268 static char *event_read_name(void)
1272 if (read_expected(EVENT_ITEM
, "name") < 0)
1275 if (read_expected(EVENT_OP
, ":") < 0)
1278 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
1288 static int event_read_id(void)
1293 if (read_expected_item(EVENT_ITEM
, "ID") < 0)
1296 if (read_expected(EVENT_OP
, ":") < 0)
1299 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
1302 id
= strtoul(token
, NULL
, 0);
1311 static int field_is_string(struct format_field
*field
)
1313 if ((field
->flags
& FIELD_IS_ARRAY
) &&
1314 (strstr(field
->type
, "char") || strstr(field
->type
, "u8") ||
1315 strstr(field
->type
, "s8")))
1321 static int field_is_dynamic(struct format_field
*field
)
1323 if (strncmp(field
->type
, "__data_loc", 10) == 0)
1329 static int field_is_long(struct format_field
*field
)
1331 /* includes long long */
1332 if (strstr(field
->type
, "long"))
1338 static unsigned int type_size(const char *name
)
1340 /* This covers all FIELD_IS_STRING types. */
1358 for (i
= 0; table
[i
].type
; i
++) {
1359 if (!strcmp(table
[i
].type
, name
))
1360 return table
[i
].size
;
1366 static int event_read_fields(struct event_format
*event
, struct format_field
**fields
)
1368 struct format_field
*field
= NULL
;
1369 enum event_type type
;
1375 unsigned int size_dynamic
= 0;
1377 type
= read_token(&token
);
1378 if (type
== EVENT_NEWLINE
) {
1385 if (test_type_token(type
, token
, EVENT_ITEM
, "field"))
1389 type
= read_token(&token
);
1391 * The ftrace fields may still use the "special" name.
1394 if (event
->flags
& EVENT_FL_ISFTRACE
&&
1395 type
== EVENT_ITEM
&& strcmp(token
, "special") == 0) {
1397 type
= read_token(&token
);
1400 if (test_type_token(type
, token
, EVENT_OP
, ":") < 0)
1404 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
1409 field
= calloc(1, sizeof(*field
));
1413 field
->event
= event
;
1415 /* read the rest of the type */
1417 type
= read_token(&token
);
1418 if (type
== EVENT_ITEM
||
1419 (type
== EVENT_OP
&& strcmp(token
, "*") == 0) ||
1421 * Some of the ftrace fields are broken and have
1422 * an illegal "." in them.
1424 (event
->flags
& EVENT_FL_ISFTRACE
&&
1425 type
== EVENT_OP
&& strcmp(token
, ".") == 0)) {
1427 if (strcmp(token
, "*") == 0)
1428 field
->flags
|= FIELD_IS_POINTER
;
1432 new_type
= realloc(field
->type
,
1433 strlen(field
->type
) +
1434 strlen(last_token
) + 2);
1439 field
->type
= new_type
;
1440 strcat(field
->type
, " ");
1441 strcat(field
->type
, last_token
);
1444 field
->type
= last_token
;
1453 do_warning_event(event
, "%s: no type found", __func__
);
1456 field
->name
= field
->alias
= last_token
;
1458 if (test_type(type
, EVENT_OP
))
1461 if (strcmp(token
, "[") == 0) {
1462 enum event_type last_type
= type
;
1463 char *brackets
= token
;
1467 field
->flags
|= FIELD_IS_ARRAY
;
1469 type
= read_token(&token
);
1471 if (type
== EVENT_ITEM
)
1472 field
->arraylen
= strtoul(token
, NULL
, 0);
1474 field
->arraylen
= 0;
1476 while (strcmp(token
, "]") != 0) {
1477 if (last_type
== EVENT_ITEM
&&
1484 new_brackets
= realloc(brackets
,
1486 strlen(token
) + len
);
1487 if (!new_brackets
) {
1491 brackets
= new_brackets
;
1493 strcat(brackets
, " ");
1494 strcat(brackets
, token
);
1495 /* We only care about the last token */
1496 field
->arraylen
= strtoul(token
, NULL
, 0);
1498 type
= read_token(&token
);
1499 if (type
== EVENT_NONE
) {
1500 do_warning_event(event
, "failed to find token");
1507 new_brackets
= realloc(brackets
, strlen(brackets
) + 2);
1508 if (!new_brackets
) {
1512 brackets
= new_brackets
;
1513 strcat(brackets
, "]");
1515 /* add brackets to type */
1517 type
= read_token(&token
);
1519 * If the next token is not an OP, then it is of
1520 * the format: type [] item;
1522 if (type
== EVENT_ITEM
) {
1524 new_type
= realloc(field
->type
,
1525 strlen(field
->type
) +
1526 strlen(field
->name
) +
1527 strlen(brackets
) + 2);
1532 field
->type
= new_type
;
1533 strcat(field
->type
, " ");
1534 strcat(field
->type
, field
->name
);
1535 size_dynamic
= type_size(field
->name
);
1536 free_token(field
->name
);
1537 strcat(field
->type
, brackets
);
1538 field
->name
= field
->alias
= token
;
1539 type
= read_token(&token
);
1542 new_type
= realloc(field
->type
,
1543 strlen(field
->type
) +
1544 strlen(brackets
) + 1);
1549 field
->type
= new_type
;
1550 strcat(field
->type
, brackets
);
1555 if (field_is_string(field
))
1556 field
->flags
|= FIELD_IS_STRING
;
1557 if (field_is_dynamic(field
))
1558 field
->flags
|= FIELD_IS_DYNAMIC
;
1559 if (field_is_long(field
))
1560 field
->flags
|= FIELD_IS_LONG
;
1562 if (test_type_token(type
, token
, EVENT_OP
, ";"))
1566 if (read_expected(EVENT_ITEM
, "offset") < 0)
1569 if (read_expected(EVENT_OP
, ":") < 0)
1572 if (read_expect_type(EVENT_ITEM
, &token
))
1574 field
->offset
= strtoul(token
, NULL
, 0);
1577 if (read_expected(EVENT_OP
, ";") < 0)
1580 if (read_expected(EVENT_ITEM
, "size") < 0)
1583 if (read_expected(EVENT_OP
, ":") < 0)
1586 if (read_expect_type(EVENT_ITEM
, &token
))
1588 field
->size
= strtoul(token
, NULL
, 0);
1591 if (read_expected(EVENT_OP
, ";") < 0)
1594 type
= read_token(&token
);
1595 if (type
!= EVENT_NEWLINE
) {
1596 /* newer versions of the kernel have a "signed" type */
1597 if (test_type_token(type
, token
, EVENT_ITEM
, "signed"))
1602 if (read_expected(EVENT_OP
, ":") < 0)
1605 if (read_expect_type(EVENT_ITEM
, &token
))
1608 if (strtoul(token
, NULL
, 0))
1609 field
->flags
|= FIELD_IS_SIGNED
;
1612 if (read_expected(EVENT_OP
, ";") < 0)
1615 if (read_expect_type(EVENT_NEWLINE
, &token
))
1621 if (field
->flags
& FIELD_IS_ARRAY
) {
1622 if (field
->arraylen
)
1623 field
->elementsize
= field
->size
/ field
->arraylen
;
1624 else if (field
->flags
& FIELD_IS_DYNAMIC
)
1625 field
->elementsize
= size_dynamic
;
1626 else if (field
->flags
& FIELD_IS_STRING
)
1627 field
->elementsize
= 1;
1628 else if (field
->flags
& FIELD_IS_LONG
)
1629 field
->elementsize
= event
->pevent
?
1630 event
->pevent
->long_size
:
1633 field
->elementsize
= field
->size
;
1636 fields
= &field
->next
;
1653 static int event_read_format(struct event_format
*event
)
1658 if (read_expected_item(EVENT_ITEM
, "format") < 0)
1661 if (read_expected(EVENT_OP
, ":") < 0)
1664 if (read_expect_type(EVENT_NEWLINE
, &token
))
1668 ret
= event_read_fields(event
, &event
->format
.common_fields
);
1671 event
->format
.nr_common
= ret
;
1673 ret
= event_read_fields(event
, &event
->format
.fields
);
1676 event
->format
.nr_fields
= ret
;
1685 static enum event_type
1686 process_arg_token(struct event_format
*event
, struct print_arg
*arg
,
1687 char **tok
, enum event_type type
);
1689 static enum event_type
1690 process_arg(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
1692 enum event_type type
;
1695 type
= read_token(&token
);
1698 return process_arg_token(event
, arg
, tok
, type
);
1701 static enum event_type
1702 process_op(struct event_format
*event
, struct print_arg
*arg
, char **tok
);
1705 * For __print_symbolic() and __print_flags, we need to completely
1706 * evaluate the first argument, which defines what to print next.
1708 static enum event_type
1709 process_field_arg(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
1711 enum event_type type
;
1713 type
= process_arg(event
, arg
, tok
);
1715 while (type
== EVENT_OP
) {
1716 type
= process_op(event
, arg
, tok
);
1722 static enum event_type
1723 process_cond(struct event_format
*event
, struct print_arg
*top
, char **tok
)
1725 struct print_arg
*arg
, *left
, *right
;
1726 enum event_type type
;
1731 right
= alloc_arg();
1733 if (!arg
|| !left
|| !right
) {
1734 do_warning_event(event
, "%s: not enough memory!", __func__
);
1735 /* arg will be freed at out_free */
1741 arg
->type
= PRINT_OP
;
1742 arg
->op
.left
= left
;
1743 arg
->op
.right
= right
;
1746 type
= process_arg(event
, left
, &token
);
1749 if (type
== EVENT_ERROR
)
1752 /* Handle other operations in the arguments */
1753 if (type
== EVENT_OP
&& strcmp(token
, ":") != 0) {
1754 type
= process_op(event
, left
, &token
);
1758 if (test_type_token(type
, token
, EVENT_OP
, ":"))
1763 type
= process_arg(event
, right
, &token
);
1765 top
->op
.right
= arg
;
1771 /* Top may point to itself */
1772 top
->op
.right
= NULL
;
1778 static enum event_type
1779 process_array(struct event_format
*event
, struct print_arg
*top
, char **tok
)
1781 struct print_arg
*arg
;
1782 enum event_type type
;
1787 do_warning_event(event
, "%s: not enough memory!", __func__
);
1788 /* '*tok' is set to top->op.op. No need to free. */
1794 type
= process_arg(event
, arg
, &token
);
1795 if (test_type_token(type
, token
, EVENT_OP
, "]"))
1798 top
->op
.right
= arg
;
1801 type
= read_token_item(&token
);
1812 static int get_op_prio(char *op
)
1826 /* '>>' and '<<' are 8 */
1830 /* '==' and '!=' are 10 */
1840 do_warning("unknown op '%c'", op
[0]);
1844 if (strcmp(op
, "++") == 0 ||
1845 strcmp(op
, "--") == 0) {
1847 } else if (strcmp(op
, ">>") == 0 ||
1848 strcmp(op
, "<<") == 0) {
1850 } else if (strcmp(op
, ">=") == 0 ||
1851 strcmp(op
, "<=") == 0) {
1853 } else if (strcmp(op
, "==") == 0 ||
1854 strcmp(op
, "!=") == 0) {
1856 } else if (strcmp(op
, "&&") == 0) {
1858 } else if (strcmp(op
, "||") == 0) {
1861 do_warning("unknown op '%s'", op
);
1867 static int set_op_prio(struct print_arg
*arg
)
1870 /* single ops are the greatest */
1871 if (!arg
->op
.left
|| arg
->op
.left
->type
== PRINT_NULL
)
1874 arg
->op
.prio
= get_op_prio(arg
->op
.op
);
1876 return arg
->op
.prio
;
1879 /* Note, *tok does not get freed, but will most likely be saved */
1880 static enum event_type
1881 process_op(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
1883 struct print_arg
*left
, *right
= NULL
;
1884 enum event_type type
;
1887 /* the op is passed in via tok */
1890 if (arg
->type
== PRINT_OP
&& !arg
->op
.left
) {
1891 /* handle single op */
1893 do_warning_event(event
, "bad op token %s", token
);
1903 do_warning_event(event
, "bad op token %s", token
);
1908 /* make an empty left */
1913 left
->type
= PRINT_NULL
;
1914 arg
->op
.left
= left
;
1916 right
= alloc_arg();
1920 arg
->op
.right
= right
;
1922 /* do not free the token, it belongs to an op */
1924 type
= process_arg(event
, right
, tok
);
1926 } else if (strcmp(token
, "?") == 0) {
1932 /* copy the top arg to the left */
1935 arg
->type
= PRINT_OP
;
1937 arg
->op
.left
= left
;
1940 /* it will set arg->op.right */
1941 type
= process_cond(event
, arg
, tok
);
1943 } else if (strcmp(token
, ">>") == 0 ||
1944 strcmp(token
, "<<") == 0 ||
1945 strcmp(token
, "&") == 0 ||
1946 strcmp(token
, "|") == 0 ||
1947 strcmp(token
, "&&") == 0 ||
1948 strcmp(token
, "||") == 0 ||
1949 strcmp(token
, "-") == 0 ||
1950 strcmp(token
, "+") == 0 ||
1951 strcmp(token
, "*") == 0 ||
1952 strcmp(token
, "^") == 0 ||
1953 strcmp(token
, "/") == 0 ||
1954 strcmp(token
, "%") == 0 ||
1955 strcmp(token
, "<") == 0 ||
1956 strcmp(token
, ">") == 0 ||
1957 strcmp(token
, "<=") == 0 ||
1958 strcmp(token
, ">=") == 0 ||
1959 strcmp(token
, "==") == 0 ||
1960 strcmp(token
, "!=") == 0) {
1966 /* copy the top arg to the left */
1969 arg
->type
= PRINT_OP
;
1971 arg
->op
.left
= left
;
1972 arg
->op
.right
= NULL
;
1974 if (set_op_prio(arg
) == -1) {
1975 event
->flags
|= EVENT_FL_FAILED
;
1976 /* arg->op.op (= token) will be freed at out_free */
1981 type
= read_token_item(&token
);
1984 /* could just be a type pointer */
1985 if ((strcmp(arg
->op
.op
, "*") == 0) &&
1986 type
== EVENT_DELIM
&& (strcmp(token
, ")") == 0)) {
1989 if (left
->type
!= PRINT_ATOM
) {
1990 do_warning_event(event
, "bad pointer type");
1993 new_atom
= realloc(left
->atom
.atom
,
1994 strlen(left
->atom
.atom
) + 3);
1998 left
->atom
.atom
= new_atom
;
1999 strcat(left
->atom
.atom
, " *");
2007 right
= alloc_arg();
2011 type
= process_arg_token(event
, right
, tok
, type
);
2012 if (type
== EVENT_ERROR
) {
2014 /* token was freed in process_arg_token() via *tok */
2019 if (right
->type
== PRINT_OP
&&
2020 get_op_prio(arg
->op
.op
) < get_op_prio(right
->op
.op
)) {
2021 struct print_arg tmp
;
2023 /* rotate ops according to the priority */
2024 arg
->op
.right
= right
->op
.left
;
2030 arg
->op
.left
= right
;
2032 arg
->op
.right
= right
;
2035 } else if (strcmp(token
, "[") == 0) {
2043 arg
->type
= PRINT_OP
;
2045 arg
->op
.left
= left
;
2049 /* it will set arg->op.right */
2050 type
= process_array(event
, arg
, tok
);
2053 do_warning_event(event
, "unknown op '%s'", token
);
2054 event
->flags
|= EVENT_FL_FAILED
;
2055 /* the arg is now the left side */
2059 if (type
== EVENT_OP
&& strcmp(*tok
, ":") != 0) {
2062 /* higher prios need to be closer to the root */
2063 prio
= get_op_prio(*tok
);
2065 if (prio
> arg
->op
.prio
)
2066 return process_op(event
, arg
, tok
);
2068 return process_op(event
, right
, tok
);
2074 do_warning_event(event
, "%s: not enough memory!", __func__
);
2081 static enum event_type
2082 process_entry(struct event_format
*event __maybe_unused
, struct print_arg
*arg
,
2085 enum event_type type
;
2089 if (read_expected(EVENT_OP
, "->") < 0)
2092 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
2096 arg
->type
= PRINT_FIELD
;
2097 arg
->field
.name
= field
;
2099 if (is_flag_field
) {
2100 arg
->field
.field
= pevent_find_any_field(event
, arg
->field
.name
);
2101 arg
->field
.field
->flags
|= FIELD_IS_FLAG
;
2103 } else if (is_symbolic_field
) {
2104 arg
->field
.field
= pevent_find_any_field(event
, arg
->field
.name
);
2105 arg
->field
.field
->flags
|= FIELD_IS_SYMBOLIC
;
2106 is_symbolic_field
= 0;
2109 type
= read_token(&token
);
2121 static int alloc_and_process_delim(struct event_format
*event
, char *next_token
,
2122 struct print_arg
**print_arg
)
2124 struct print_arg
*field
;
2125 enum event_type type
;
2129 field
= alloc_arg();
2131 do_warning_event(event
, "%s: not enough memory!", __func__
);
2136 type
= process_arg(event
, field
, &token
);
2138 if (test_type_token(type
, token
, EVENT_DELIM
, next_token
)) {
2142 goto out_free_token
;
2153 static char *arg_eval (struct print_arg
*arg
);
2155 static unsigned long long
2156 eval_type_str(unsigned long long val
, const char *type
, int pointer
)
2166 if (type
[len
-1] != '*') {
2167 do_warning("pointer expected with non pointer type");
2173 do_warning("%s: not enough memory!", __func__
);
2176 memcpy(ref
, type
, len
);
2178 /* chop off the " *" */
2181 val
= eval_type_str(val
, ref
, 0);
2186 /* check if this is a pointer */
2187 if (type
[len
- 1] == '*')
2190 /* Try to figure out the arg size*/
2191 if (strncmp(type
, "struct", 6) == 0)
2195 if (strcmp(type
, "u8") == 0)
2198 if (strcmp(type
, "u16") == 0)
2199 return val
& 0xffff;
2201 if (strcmp(type
, "u32") == 0)
2202 return val
& 0xffffffff;
2204 if (strcmp(type
, "u64") == 0 ||
2205 strcmp(type
, "s64"))
2208 if (strcmp(type
, "s8") == 0)
2209 return (unsigned long long)(char)val
& 0xff;
2211 if (strcmp(type
, "s16") == 0)
2212 return (unsigned long long)(short)val
& 0xffff;
2214 if (strcmp(type
, "s32") == 0)
2215 return (unsigned long long)(int)val
& 0xffffffff;
2217 if (strncmp(type
, "unsigned ", 9) == 0) {
2222 if (strcmp(type
, "char") == 0) {
2224 return (unsigned long long)(char)val
& 0xff;
2229 if (strcmp(type
, "short") == 0) {
2231 return (unsigned long long)(short)val
& 0xffff;
2233 return val
& 0xffff;
2236 if (strcmp(type
, "int") == 0) {
2238 return (unsigned long long)(int)val
& 0xffffffff;
2240 return val
& 0xffffffff;
2247 * Try to figure out the type.
2249 static unsigned long long
2250 eval_type(unsigned long long val
, struct print_arg
*arg
, int pointer
)
2252 if (arg
->type
!= PRINT_TYPE
) {
2253 do_warning("expected type argument");
2257 return eval_type_str(val
, arg
->typecast
.type
, pointer
);
2260 static int arg_num_eval(struct print_arg
*arg
, long long *val
)
2262 long long left
, right
;
2265 switch (arg
->type
) {
2267 *val
= strtoll(arg
->atom
.atom
, NULL
, 0);
2270 ret
= arg_num_eval(arg
->typecast
.item
, val
);
2273 *val
= eval_type(*val
, arg
, 0);
2276 switch (arg
->op
.op
[0]) {
2278 ret
= arg_num_eval(arg
->op
.left
, &left
);
2281 ret
= arg_num_eval(arg
->op
.right
, &right
);
2285 *val
= left
|| right
;
2287 *val
= left
| right
;
2290 ret
= arg_num_eval(arg
->op
.left
, &left
);
2293 ret
= arg_num_eval(arg
->op
.right
, &right
);
2297 *val
= left
&& right
;
2299 *val
= left
& right
;
2302 ret
= arg_num_eval(arg
->op
.left
, &left
);
2305 ret
= arg_num_eval(arg
->op
.right
, &right
);
2308 switch (arg
->op
.op
[1]) {
2310 *val
= left
< right
;
2313 *val
= left
<< right
;
2316 *val
= left
<= right
;
2319 do_warning("unknown op '%s'", arg
->op
.op
);
2324 ret
= arg_num_eval(arg
->op
.left
, &left
);
2327 ret
= arg_num_eval(arg
->op
.right
, &right
);
2330 switch (arg
->op
.op
[1]) {
2332 *val
= left
> right
;
2335 *val
= left
>> right
;
2338 *val
= left
>= right
;
2341 do_warning("unknown op '%s'", arg
->op
.op
);
2346 ret
= arg_num_eval(arg
->op
.left
, &left
);
2349 ret
= arg_num_eval(arg
->op
.right
, &right
);
2353 if (arg
->op
.op
[1] != '=') {
2354 do_warning("unknown op '%s'", arg
->op
.op
);
2357 *val
= left
== right
;
2360 ret
= arg_num_eval(arg
->op
.left
, &left
);
2363 ret
= arg_num_eval(arg
->op
.right
, &right
);
2367 switch (arg
->op
.op
[1]) {
2369 *val
= left
!= right
;
2372 do_warning("unknown op '%s'", arg
->op
.op
);
2377 /* check for negative */
2378 if (arg
->op
.left
->type
== PRINT_NULL
)
2381 ret
= arg_num_eval(arg
->op
.left
, &left
);
2384 ret
= arg_num_eval(arg
->op
.right
, &right
);
2387 *val
= left
- right
;
2390 if (arg
->op
.left
->type
== PRINT_NULL
)
2393 ret
= arg_num_eval(arg
->op
.left
, &left
);
2396 ret
= arg_num_eval(arg
->op
.right
, &right
);
2399 *val
= left
+ right
;
2402 ret
= arg_num_eval(arg
->op
.right
, &right
);
2408 do_warning("unknown op '%s'", arg
->op
.op
);
2414 case PRINT_FIELD
... PRINT_SYMBOL
:
2419 do_warning("invalid eval type %d", arg
->type
);
2426 static char *arg_eval (struct print_arg
*arg
)
2429 static char buf
[20];
2431 switch (arg
->type
) {
2433 return arg
->atom
.atom
;
2435 return arg_eval(arg
->typecast
.item
);
2437 if (!arg_num_eval(arg
, &val
))
2439 sprintf(buf
, "%lld", val
);
2443 case PRINT_FIELD
... PRINT_SYMBOL
:
2448 do_warning("invalid eval type %d", arg
->type
);
2455 static enum event_type
2456 process_fields(struct event_format
*event
, struct print_flag_sym
**list
, char **tok
)
2458 enum event_type type
;
2459 struct print_arg
*arg
= NULL
;
2460 struct print_flag_sym
*field
;
2466 type
= read_token_item(&token
);
2467 if (test_type_token(type
, token
, EVENT_OP
, "{"))
2475 type
= process_arg(event
, arg
, &token
);
2477 if (type
== EVENT_OP
)
2478 type
= process_op(event
, arg
, &token
);
2480 if (type
== EVENT_ERROR
)
2483 if (test_type_token(type
, token
, EVENT_DELIM
, ","))
2486 field
= calloc(1, sizeof(*field
));
2490 value
= arg_eval(arg
);
2492 goto out_free_field
;
2493 field
->value
= strdup(value
);
2494 if (field
->value
== NULL
)
2495 goto out_free_field
;
2503 type
= process_arg(event
, arg
, &token
);
2504 if (test_type_token(type
, token
, EVENT_OP
, "}"))
2505 goto out_free_field
;
2507 value
= arg_eval(arg
);
2509 goto out_free_field
;
2510 field
->str
= strdup(value
);
2511 if (field
->str
== NULL
)
2512 goto out_free_field
;
2517 list
= &field
->next
;
2520 type
= read_token_item(&token
);
2521 } while (type
== EVENT_DELIM
&& strcmp(token
, ",") == 0);
2527 free_flag_sym(field
);
2536 static enum event_type
2537 process_flags(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
2539 struct print_arg
*field
;
2540 enum event_type type
;
2543 memset(arg
, 0, sizeof(*arg
));
2544 arg
->type
= PRINT_FLAGS
;
2546 field
= alloc_arg();
2548 do_warning_event(event
, "%s: not enough memory!", __func__
);
2552 type
= process_field_arg(event
, field
, &token
);
2554 /* Handle operations in the first argument */
2555 while (type
== EVENT_OP
)
2556 type
= process_op(event
, field
, &token
);
2558 if (test_type_token(type
, token
, EVENT_DELIM
, ","))
2559 goto out_free_field
;
2562 arg
->flags
.field
= field
;
2564 type
= read_token_item(&token
);
2565 if (event_item_type(type
)) {
2566 arg
->flags
.delim
= token
;
2567 type
= read_token_item(&token
);
2570 if (test_type_token(type
, token
, EVENT_DELIM
, ","))
2573 type
= process_fields(event
, &arg
->flags
.flags
, &token
);
2574 if (test_type_token(type
, token
, EVENT_DELIM
, ")"))
2578 type
= read_token_item(tok
);
2589 static enum event_type
2590 process_symbols(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
2592 struct print_arg
*field
;
2593 enum event_type type
;
2596 memset(arg
, 0, sizeof(*arg
));
2597 arg
->type
= PRINT_SYMBOL
;
2599 field
= alloc_arg();
2601 do_warning_event(event
, "%s: not enough memory!", __func__
);
2605 type
= process_field_arg(event
, field
, &token
);
2607 if (test_type_token(type
, token
, EVENT_DELIM
, ","))
2608 goto out_free_field
;
2610 arg
->symbol
.field
= field
;
2612 type
= process_fields(event
, &arg
->symbol
.symbols
, &token
);
2613 if (test_type_token(type
, token
, EVENT_DELIM
, ")"))
2617 type
= read_token_item(tok
);
2628 static enum event_type
2629 process_hex(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
2631 memset(arg
, 0, sizeof(*arg
));
2632 arg
->type
= PRINT_HEX
;
2634 if (alloc_and_process_delim(event
, ",", &arg
->hex
.field
))
2637 if (alloc_and_process_delim(event
, ")", &arg
->hex
.size
))
2640 return read_token_item(tok
);
2643 free_arg(arg
->hex
.field
);
2644 arg
->hex
.field
= NULL
;
2650 static enum event_type
2651 process_int_array(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
2653 memset(arg
, 0, sizeof(*arg
));
2654 arg
->type
= PRINT_INT_ARRAY
;
2656 if (alloc_and_process_delim(event
, ",", &arg
->int_array
.field
))
2659 if (alloc_and_process_delim(event
, ",", &arg
->int_array
.count
))
2662 if (alloc_and_process_delim(event
, ")", &arg
->int_array
.el_size
))
2665 return read_token_item(tok
);
2668 free_arg(arg
->int_array
.count
);
2669 arg
->int_array
.count
= NULL
;
2671 free_arg(arg
->int_array
.field
);
2672 arg
->int_array
.field
= NULL
;
2678 static enum event_type
2679 process_dynamic_array(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
2681 struct format_field
*field
;
2682 enum event_type type
;
2685 memset(arg
, 0, sizeof(*arg
));
2686 arg
->type
= PRINT_DYNAMIC_ARRAY
;
2689 * The item within the parenthesis is another field that holds
2690 * the index into where the array starts.
2692 type
= read_token(&token
);
2694 if (type
!= EVENT_ITEM
)
2697 /* Find the field */
2699 field
= pevent_find_field(event
, token
);
2703 arg
->dynarray
.field
= field
;
2704 arg
->dynarray
.index
= 0;
2706 if (read_expected(EVENT_DELIM
, ")") < 0)
2710 type
= read_token_item(&token
);
2712 if (type
!= EVENT_OP
|| strcmp(token
, "[") != 0)
2718 do_warning_event(event
, "%s: not enough memory!", __func__
);
2723 type
= process_arg(event
, arg
, &token
);
2724 if (type
== EVENT_ERROR
)
2727 if (!test_type_token(type
, token
, EVENT_OP
, "]"))
2731 type
= read_token_item(tok
);
2742 static enum event_type
2743 process_dynamic_array_len(struct event_format
*event
, struct print_arg
*arg
,
2746 struct format_field
*field
;
2747 enum event_type type
;
2750 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
2753 arg
->type
= PRINT_DYNAMIC_ARRAY_LEN
;
2755 /* Find the field */
2756 field
= pevent_find_field(event
, token
);
2760 arg
->dynarray
.field
= field
;
2761 arg
->dynarray
.index
= 0;
2763 if (read_expected(EVENT_DELIM
, ")") < 0)
2766 type
= read_token(&token
);
2778 static enum event_type
2779 process_paren(struct event_format
*event
, struct print_arg
*arg
, char **tok
)
2781 struct print_arg
*item_arg
;
2782 enum event_type type
;
2785 type
= process_arg(event
, arg
, &token
);
2787 if (type
== EVENT_ERROR
)
2790 if (type
== EVENT_OP
)
2791 type
= process_op(event
, arg
, &token
);
2793 if (type
== EVENT_ERROR
)
2796 if (test_type_token(type
, token
, EVENT_DELIM
, ")"))
2800 type
= read_token_item(&token
);
2803 * If the next token is an item or another open paren, then
2804 * this was a typecast.
2806 if (event_item_type(type
) ||
2807 (type
== EVENT_DELIM
&& strcmp(token
, "(") == 0)) {
2809 /* make this a typecast and contine */
2811 /* prevous must be an atom */
2812 if (arg
->type
!= PRINT_ATOM
) {
2813 do_warning_event(event
, "previous needed to be PRINT_ATOM");
2817 item_arg
= alloc_arg();
2819 do_warning_event(event
, "%s: not enough memory!",
2824 arg
->type
= PRINT_TYPE
;
2825 arg
->typecast
.type
= arg
->atom
.atom
;
2826 arg
->typecast
.item
= item_arg
;
2827 type
= process_arg_token(event
, item_arg
, &token
, type
);
2841 static enum event_type
2842 process_str(struct event_format
*event __maybe_unused
, struct print_arg
*arg
,
2845 enum event_type type
;
2848 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
2851 arg
->type
= PRINT_STRING
;
2852 arg
->string
.string
= token
;
2853 arg
->string
.offset
= -1;
2855 if (read_expected(EVENT_DELIM
, ")") < 0)
2858 type
= read_token(&token
);
2870 static enum event_type
2871 process_bitmask(struct event_format
*event __maybe_unused
, struct print_arg
*arg
,
2874 enum event_type type
;
2877 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
2880 arg
->type
= PRINT_BITMASK
;
2881 arg
->bitmask
.bitmask
= token
;
2882 arg
->bitmask
.offset
= -1;
2884 if (read_expected(EVENT_DELIM
, ")") < 0)
2887 type
= read_token(&token
);
2899 static struct pevent_function_handler
*
2900 find_func_handler(struct pevent
*pevent
, char *func_name
)
2902 struct pevent_function_handler
*func
;
2907 for (func
= pevent
->func_handlers
; func
; func
= func
->next
) {
2908 if (strcmp(func
->name
, func_name
) == 0)
2915 static void remove_func_handler(struct pevent
*pevent
, char *func_name
)
2917 struct pevent_function_handler
*func
;
2918 struct pevent_function_handler
**next
;
2920 next
= &pevent
->func_handlers
;
2921 while ((func
= *next
)) {
2922 if (strcmp(func
->name
, func_name
) == 0) {
2924 free_func_handle(func
);
2931 static enum event_type
2932 process_func_handler(struct event_format
*event
, struct pevent_function_handler
*func
,
2933 struct print_arg
*arg
, char **tok
)
2935 struct print_arg
**next_arg
;
2936 struct print_arg
*farg
;
2937 enum event_type type
;
2941 arg
->type
= PRINT_FUNC
;
2942 arg
->func
.func
= func
;
2946 next_arg
= &(arg
->func
.args
);
2947 for (i
= 0; i
< func
->nr_args
; i
++) {
2950 do_warning_event(event
, "%s: not enough memory!",
2955 type
= process_arg(event
, farg
, &token
);
2956 if (i
< (func
->nr_args
- 1)) {
2957 if (type
!= EVENT_DELIM
|| strcmp(token
, ",") != 0) {
2958 do_warning_event(event
,
2959 "Error: function '%s()' expects %d arguments but event %s only uses %d",
2960 func
->name
, func
->nr_args
,
2961 event
->name
, i
+ 1);
2965 if (type
!= EVENT_DELIM
|| strcmp(token
, ")") != 0) {
2966 do_warning_event(event
,
2967 "Error: function '%s()' only expects %d arguments but event %s has more",
2968 func
->name
, func
->nr_args
, event
->name
);
2974 next_arg
= &(farg
->next
);
2978 type
= read_token(&token
);
2989 static enum event_type
2990 process_function(struct event_format
*event
, struct print_arg
*arg
,
2991 char *token
, char **tok
)
2993 struct pevent_function_handler
*func
;
2995 if (strcmp(token
, "__print_flags") == 0) {
2998 return process_flags(event
, arg
, tok
);
3000 if (strcmp(token
, "__print_symbolic") == 0) {
3002 is_symbolic_field
= 1;
3003 return process_symbols(event
, arg
, tok
);
3005 if (strcmp(token
, "__print_hex") == 0) {
3007 return process_hex(event
, arg
, tok
);
3009 if (strcmp(token
, "__print_array") == 0) {
3011 return process_int_array(event
, arg
, tok
);
3013 if (strcmp(token
, "__get_str") == 0) {
3015 return process_str(event
, arg
, tok
);
3017 if (strcmp(token
, "__get_bitmask") == 0) {
3019 return process_bitmask(event
, arg
, tok
);
3021 if (strcmp(token
, "__get_dynamic_array") == 0) {
3023 return process_dynamic_array(event
, arg
, tok
);
3025 if (strcmp(token
, "__get_dynamic_array_len") == 0) {
3027 return process_dynamic_array_len(event
, arg
, tok
);
3030 func
= find_func_handler(event
->pevent
, token
);
3033 return process_func_handler(event
, func
, arg
, tok
);
3036 do_warning_event(event
, "function %s not defined", token
);
3041 static enum event_type
3042 process_arg_token(struct event_format
*event
, struct print_arg
*arg
,
3043 char **tok
, enum event_type type
)
3052 if (strcmp(token
, "REC") == 0) {
3054 type
= process_entry(event
, arg
, &token
);
3058 /* test the next token */
3059 type
= read_token_item(&token
);
3062 * If the next token is a parenthesis, then this
3065 if (type
== EVENT_DELIM
&& strcmp(token
, "(") == 0) {
3068 /* this will free atom. */
3069 type
= process_function(event
, arg
, atom
, &token
);
3072 /* atoms can be more than one token long */
3073 while (type
== EVENT_ITEM
) {
3075 new_atom
= realloc(atom
,
3076 strlen(atom
) + strlen(token
) + 2);
3085 strcat(atom
, token
);
3087 type
= read_token_item(&token
);
3090 arg
->type
= PRINT_ATOM
;
3091 arg
->atom
.atom
= atom
;
3096 arg
->type
= PRINT_ATOM
;
3097 arg
->atom
.atom
= token
;
3098 type
= read_token_item(&token
);
3101 if (strcmp(token
, "(") == 0) {
3103 type
= process_paren(event
, arg
, &token
);
3107 /* handle single ops */
3108 arg
->type
= PRINT_OP
;
3110 arg
->op
.left
= NULL
;
3111 type
= process_op(event
, arg
, &token
);
3113 /* On error, the op is freed */
3114 if (type
== EVENT_ERROR
)
3117 /* return error type if errored */
3120 case EVENT_ERROR
... EVENT_NEWLINE
:
3122 do_warning_event(event
, "unexpected type %d", type
);
3130 static int event_read_print_args(struct event_format
*event
, struct print_arg
**list
)
3132 enum event_type type
= EVENT_ERROR
;
3133 struct print_arg
*arg
;
3138 if (type
== EVENT_NEWLINE
) {
3139 type
= read_token_item(&token
);
3145 do_warning_event(event
, "%s: not enough memory!",
3150 type
= process_arg(event
, arg
, &token
);
3152 if (type
== EVENT_ERROR
) {
3161 if (type
== EVENT_OP
) {
3162 type
= process_op(event
, arg
, &token
);
3164 if (type
== EVENT_ERROR
) {
3173 if (type
== EVENT_DELIM
&& strcmp(token
, ",") == 0) {
3180 } while (type
!= EVENT_NONE
);
3182 if (type
!= EVENT_NONE
&& type
!= EVENT_ERROR
)
3188 static int event_read_print(struct event_format
*event
)
3190 enum event_type type
;
3194 if (read_expected_item(EVENT_ITEM
, "print") < 0)
3197 if (read_expected(EVENT_ITEM
, "fmt") < 0)
3200 if (read_expected(EVENT_OP
, ":") < 0)
3203 if (read_expect_type(EVENT_DQUOTE
, &token
) < 0)
3207 event
->print_fmt
.format
= token
;
3208 event
->print_fmt
.args
= NULL
;
3210 /* ok to have no arg */
3211 type
= read_token_item(&token
);
3213 if (type
== EVENT_NONE
)
3216 /* Handle concatenation of print lines */
3217 if (type
== EVENT_DQUOTE
) {
3220 if (asprintf(&cat
, "%s%s", event
->print_fmt
.format
, token
) < 0)
3223 free_token(event
->print_fmt
.format
);
3224 event
->print_fmt
.format
= NULL
;
3229 if (test_type_token(type
, token
, EVENT_DELIM
, ","))
3234 ret
= event_read_print_args(event
, &event
->print_fmt
.args
);
3246 * pevent_find_common_field - return a common field by event
3247 * @event: handle for the event
3248 * @name: the name of the common field to return
3250 * Returns a common field from the event by the given @name.
3251 * This only searchs the common fields and not all field.
3253 struct format_field
*
3254 pevent_find_common_field(struct event_format
*event
, const char *name
)
3256 struct format_field
*format
;
3258 for (format
= event
->format
.common_fields
;
3259 format
; format
= format
->next
) {
3260 if (strcmp(format
->name
, name
) == 0)
3268 * pevent_find_field - find a non-common field
3269 * @event: handle for the event
3270 * @name: the name of the non-common field
3272 * Returns a non-common field by the given @name.
3273 * This does not search common fields.
3275 struct format_field
*
3276 pevent_find_field(struct event_format
*event
, const char *name
)
3278 struct format_field
*format
;
3280 for (format
= event
->format
.fields
;
3281 format
; format
= format
->next
) {
3282 if (strcmp(format
->name
, name
) == 0)
3290 * pevent_find_any_field - find any field by name
3291 * @event: handle for the event
3292 * @name: the name of the field
3294 * Returns a field by the given @name.
3295 * This searchs the common field names first, then
3296 * the non-common ones if a common one was not found.
3298 struct format_field
*
3299 pevent_find_any_field(struct event_format
*event
, const char *name
)
3301 struct format_field
*format
;
3303 format
= pevent_find_common_field(event
, name
);
3306 return pevent_find_field(event
, name
);
3310 * pevent_read_number - read a number from data
3311 * @pevent: handle for the pevent
3312 * @ptr: the raw data
3313 * @size: the size of the data that holds the number
3315 * Returns the number (converted to host) from the
3318 unsigned long long pevent_read_number(struct pevent
*pevent
,
3319 const void *ptr
, int size
)
3323 return *(unsigned char *)ptr
;
3325 return data2host2(pevent
, ptr
);
3327 return data2host4(pevent
, ptr
);
3329 return data2host8(pevent
, ptr
);
3337 * pevent_read_number_field - read a number from data
3338 * @field: a handle to the field
3339 * @data: the raw data to read
3340 * @value: the value to place the number in
3342 * Reads raw data according to a field offset and size,
3343 * and translates it into @value.
3345 * Returns 0 on success, -1 otherwise.
3347 int pevent_read_number_field(struct format_field
*field
, const void *data
,
3348 unsigned long long *value
)
3352 switch (field
->size
) {
3357 *value
= pevent_read_number(field
->event
->pevent
,
3358 data
+ field
->offset
, field
->size
);
3365 static int get_common_info(struct pevent
*pevent
,
3366 const char *type
, int *offset
, int *size
)
3368 struct event_format
*event
;
3369 struct format_field
*field
;
3372 * All events should have the same common elements.
3373 * Pick any event to find where the type is;
3375 if (!pevent
->events
) {
3376 do_warning("no event_list!");
3380 event
= pevent
->events
[0];
3381 field
= pevent_find_common_field(event
, type
);
3385 *offset
= field
->offset
;
3386 *size
= field
->size
;
3391 static int __parse_common(struct pevent
*pevent
, void *data
,
3392 int *size
, int *offset
, const char *name
)
3397 ret
= get_common_info(pevent
, name
, offset
, size
);
3401 return pevent_read_number(pevent
, data
+ *offset
, *size
);
3404 static int trace_parse_common_type(struct pevent
*pevent
, void *data
)
3406 return __parse_common(pevent
, data
,
3407 &pevent
->type_size
, &pevent
->type_offset
,
3411 static int parse_common_pid(struct pevent
*pevent
, void *data
)
3413 return __parse_common(pevent
, data
,
3414 &pevent
->pid_size
, &pevent
->pid_offset
,
3418 static int parse_common_pc(struct pevent
*pevent
, void *data
)
3420 return __parse_common(pevent
, data
,
3421 &pevent
->pc_size
, &pevent
->pc_offset
,
3422 "common_preempt_count");
3425 static int parse_common_flags(struct pevent
*pevent
, void *data
)
3427 return __parse_common(pevent
, data
,
3428 &pevent
->flags_size
, &pevent
->flags_offset
,
3432 static int parse_common_lock_depth(struct pevent
*pevent
, void *data
)
3434 return __parse_common(pevent
, data
,
3435 &pevent
->ld_size
, &pevent
->ld_offset
,
3436 "common_lock_depth");
3439 static int parse_common_migrate_disable(struct pevent
*pevent
, void *data
)
3441 return __parse_common(pevent
, data
,
3442 &pevent
->ld_size
, &pevent
->ld_offset
,
3443 "common_migrate_disable");
3446 static int events_id_cmp(const void *a
, const void *b
);
3449 * pevent_find_event - find an event by given id
3450 * @pevent: a handle to the pevent
3451 * @id: the id of the event
3453 * Returns an event that has a given @id.
3455 struct event_format
*pevent_find_event(struct pevent
*pevent
, int id
)
3457 struct event_format
**eventptr
;
3458 struct event_format key
;
3459 struct event_format
*pkey
= &key
;
3461 /* Check cache first */
3462 if (pevent
->last_event
&& pevent
->last_event
->id
== id
)
3463 return pevent
->last_event
;
3467 eventptr
= bsearch(&pkey
, pevent
->events
, pevent
->nr_events
,
3468 sizeof(*pevent
->events
), events_id_cmp
);
3471 pevent
->last_event
= *eventptr
;
3479 * pevent_find_event_by_name - find an event by given name
3480 * @pevent: a handle to the pevent
3481 * @sys: the system name to search for
3482 * @name: the name of the event to search for
3484 * This returns an event with a given @name and under the system
3485 * @sys. If @sys is NULL the first event with @name is returned.
3487 struct event_format
*
3488 pevent_find_event_by_name(struct pevent
*pevent
,
3489 const char *sys
, const char *name
)
3491 struct event_format
*event
;
3494 if (pevent
->last_event
&&
3495 strcmp(pevent
->last_event
->name
, name
) == 0 &&
3496 (!sys
|| strcmp(pevent
->last_event
->system
, sys
) == 0))
3497 return pevent
->last_event
;
3499 for (i
= 0; i
< pevent
->nr_events
; i
++) {
3500 event
= pevent
->events
[i
];
3501 if (strcmp(event
->name
, name
) == 0) {
3504 if (strcmp(event
->system
, sys
) == 0)
3508 if (i
== pevent
->nr_events
)
3511 pevent
->last_event
= event
;
3515 static unsigned long long
3516 eval_num_arg(void *data
, int size
, struct event_format
*event
, struct print_arg
*arg
)
3518 struct pevent
*pevent
= event
->pevent
;
3519 unsigned long long val
= 0;
3520 unsigned long long left
, right
;
3521 struct print_arg
*typearg
= NULL
;
3522 struct print_arg
*larg
;
3523 unsigned long offset
;
3524 unsigned int field_size
;
3526 switch (arg
->type
) {
3531 return strtoull(arg
->atom
.atom
, NULL
, 0);
3533 if (!arg
->field
.field
) {
3534 arg
->field
.field
= pevent_find_any_field(event
, arg
->field
.name
);
3535 if (!arg
->field
.field
)
3536 goto out_warning_field
;
3539 /* must be a number */
3540 val
= pevent_read_number(pevent
, data
+ arg
->field
.field
->offset
,
3541 arg
->field
.field
->size
);
3545 case PRINT_INT_ARRAY
:
3549 val
= eval_num_arg(data
, size
, event
, arg
->typecast
.item
);
3550 return eval_type(val
, arg
, 0);
3558 val
= process_defined_func(&s
, data
, size
, event
, arg
);
3559 trace_seq_destroy(&s
);
3563 if (strcmp(arg
->op
.op
, "[") == 0) {
3565 * Arrays are special, since we don't want
3566 * to read the arg as is.
3568 right
= eval_num_arg(data
, size
, event
, arg
->op
.right
);
3570 /* handle typecasts */
3571 larg
= arg
->op
.left
;
3572 while (larg
->type
== PRINT_TYPE
) {
3575 larg
= larg
->typecast
.item
;
3578 /* Default to long size */
3579 field_size
= pevent
->long_size
;
3581 switch (larg
->type
) {
3582 case PRINT_DYNAMIC_ARRAY
:
3583 offset
= pevent_read_number(pevent
,
3584 data
+ larg
->dynarray
.field
->offset
,
3585 larg
->dynarray
.field
->size
);
3586 if (larg
->dynarray
.field
->elementsize
)
3587 field_size
= larg
->dynarray
.field
->elementsize
;
3589 * The actual length of the dynamic array is stored
3590 * in the top half of the field, and the offset
3591 * is in the bottom half of the 32 bit field.
3597 if (!larg
->field
.field
) {
3599 pevent_find_any_field(event
, larg
->field
.name
);
3600 if (!larg
->field
.field
) {
3602 goto out_warning_field
;
3605 field_size
= larg
->field
.field
->elementsize
;
3606 offset
= larg
->field
.field
->offset
+
3607 right
* larg
->field
.field
->elementsize
;
3610 goto default_op
; /* oops, all bets off */
3612 val
= pevent_read_number(pevent
,
3613 data
+ offset
, field_size
);
3615 val
= eval_type(val
, typearg
, 1);
3617 } else if (strcmp(arg
->op
.op
, "?") == 0) {
3618 left
= eval_num_arg(data
, size
, event
, arg
->op
.left
);
3619 arg
= arg
->op
.right
;
3621 val
= eval_num_arg(data
, size
, event
, arg
->op
.left
);
3623 val
= eval_num_arg(data
, size
, event
, arg
->op
.right
);
3627 left
= eval_num_arg(data
, size
, event
, arg
->op
.left
);
3628 right
= eval_num_arg(data
, size
, event
, arg
->op
.right
);
3629 switch (arg
->op
.op
[0]) {
3631 switch (arg
->op
.op
[1]) {
3636 val
= left
!= right
;
3639 goto out_warning_op
;
3647 val
= left
|| right
;
3653 val
= left
&& right
;
3658 switch (arg
->op
.op
[1]) {
3663 val
= left
<< right
;
3666 val
= left
<= right
;
3669 goto out_warning_op
;
3673 switch (arg
->op
.op
[1]) {
3678 val
= left
>> right
;
3681 val
= left
>= right
;
3684 goto out_warning_op
;
3688 if (arg
->op
.op
[1] != '=')
3689 goto out_warning_op
;
3691 val
= left
== right
;
3709 goto out_warning_op
;
3712 case PRINT_DYNAMIC_ARRAY_LEN
:
3713 offset
= pevent_read_number(pevent
,
3714 data
+ arg
->dynarray
.field
->offset
,
3715 arg
->dynarray
.field
->size
);
3717 * The total allocated length of the dynamic array is
3718 * stored in the top half of the field, and the offset
3719 * is in the bottom half of the 32 bit field.
3721 val
= (unsigned long long)(offset
>> 16);
3723 case PRINT_DYNAMIC_ARRAY
:
3724 /* Without [], we pass the address to the dynamic data */
3725 offset
= pevent_read_number(pevent
,
3726 data
+ arg
->dynarray
.field
->offset
,
3727 arg
->dynarray
.field
->size
);
3729 * The total allocated length of the dynamic array is
3730 * stored in the top half of the field, and the offset
3731 * is in the bottom half of the 32 bit field.
3734 val
= (unsigned long long)((unsigned long)data
+ offset
);
3736 default: /* not sure what to do there */
3742 do_warning_event(event
, "%s: unknown op '%s'", __func__
, arg
->op
.op
);
3746 do_warning_event(event
, "%s: field %s not found",
3747 __func__
, arg
->field
.name
);
3753 unsigned long long value
;
3756 static const struct flag flags
[] = {
3757 { "HI_SOFTIRQ", 0 },
3758 { "TIMER_SOFTIRQ", 1 },
3759 { "NET_TX_SOFTIRQ", 2 },
3760 { "NET_RX_SOFTIRQ", 3 },
3761 { "BLOCK_SOFTIRQ", 4 },
3762 { "IRQ_POLL_SOFTIRQ", 5 },
3763 { "TASKLET_SOFTIRQ", 6 },
3764 { "SCHED_SOFTIRQ", 7 },
3765 { "HRTIMER_SOFTIRQ", 8 },
3766 { "RCU_SOFTIRQ", 9 },
3768 { "HRTIMER_NORESTART", 0 },
3769 { "HRTIMER_RESTART", 1 },
3772 static long long eval_flag(const char *flag
)
3777 * Some flags in the format files do not get converted.
3778 * If the flag is not numeric, see if it is something that
3779 * we already know about.
3781 if (isdigit(flag
[0]))
3782 return strtoull(flag
, NULL
, 0);
3784 for (i
= 0; i
< (int)(sizeof(flags
)/sizeof(flags
[0])); i
++)
3785 if (strcmp(flags
[i
].name
, flag
) == 0)
3786 return flags
[i
].value
;
3791 static void print_str_to_seq(struct trace_seq
*s
, const char *format
,
3792 int len_arg
, const char *str
)
3795 trace_seq_printf(s
, format
, len_arg
, str
);
3797 trace_seq_printf(s
, format
, str
);
3800 static void print_bitmask_to_seq(struct pevent
*pevent
,
3801 struct trace_seq
*s
, const char *format
,
3802 int len_arg
, const void *data
, int size
)
3804 int nr_bits
= size
* 8;
3805 int str_size
= (nr_bits
+ 3) / 4;
3813 * The kernel likes to put in commas every 32 bits, we
3816 str_size
+= (nr_bits
- 1) / 32;
3818 str
= malloc(str_size
+ 1);
3820 do_warning("%s: not enough memory!", __func__
);
3825 /* Start out with -2 for the two chars per byte */
3826 for (i
= str_size
- 2; i
>= 0; i
-= 2) {
3828 * data points to a bit mask of size bytes.
3829 * In the kernel, this is an array of long words, thus
3830 * endianess is very important.
3832 if (pevent
->file_bigendian
)
3833 index
= size
- (len
+ 1);
3837 snprintf(buf
, 3, "%02x", *((unsigned char *)data
+ index
));
3838 memcpy(str
+ i
, buf
, 2);
3840 if (!(len
& 3) && i
> 0) {
3847 trace_seq_printf(s
, format
, len_arg
, str
);
3849 trace_seq_printf(s
, format
, str
);
3854 static void print_str_arg(struct trace_seq
*s
, void *data
, int size
,
3855 struct event_format
*event
, const char *format
,
3856 int len_arg
, struct print_arg
*arg
)
3858 struct pevent
*pevent
= event
->pevent
;
3859 struct print_flag_sym
*flag
;
3860 struct format_field
*field
;
3861 struct printk_map
*printk
;
3862 long long val
, fval
;
3863 unsigned long long addr
;
3869 switch (arg
->type
) {
3874 print_str_to_seq(s
, format
, len_arg
, arg
->atom
.atom
);
3877 field
= arg
->field
.field
;
3879 field
= pevent_find_any_field(event
, arg
->field
.name
);
3881 str
= arg
->field
.name
;
3882 goto out_warning_field
;
3884 arg
->field
.field
= field
;
3886 /* Zero sized fields, mean the rest of the data */
3887 len
= field
->size
? : size
- field
->offset
;
3890 * Some events pass in pointers. If this is not an array
3891 * and the size is the same as long_size, assume that it
3894 if (!(field
->flags
& FIELD_IS_ARRAY
) &&
3895 field
->size
== pevent
->long_size
) {
3897 /* Handle heterogeneous recording and processing
3901 * Traces recorded on 32-bit devices (32-bit
3902 * addressing) and processed on 64-bit devices:
3903 * In this case, only 32 bits should be read.
3906 * Traces recorded on 64 bit devices and processed
3907 * on 32-bit devices:
3908 * In this case, 64 bits must be read.
3910 addr
= (pevent
->long_size
== 8) ?
3911 *(unsigned long long *)(data
+ field
->offset
) :
3912 (unsigned long long)*(unsigned int *)(data
+ field
->offset
);
3914 /* Check if it matches a print format */
3915 printk
= find_printk(pevent
, addr
);
3917 trace_seq_puts(s
, printk
->printk
);
3919 trace_seq_printf(s
, "%llx", addr
);
3922 str
= malloc(len
+ 1);
3924 do_warning_event(event
, "%s: not enough memory!",
3928 memcpy(str
, data
+ field
->offset
, len
);
3930 print_str_to_seq(s
, format
, len_arg
, str
);
3934 val
= eval_num_arg(data
, size
, event
, arg
->flags
.field
);
3936 for (flag
= arg
->flags
.flags
; flag
; flag
= flag
->next
) {
3937 fval
= eval_flag(flag
->value
);
3938 if (!val
&& fval
< 0) {
3939 print_str_to_seq(s
, format
, len_arg
, flag
->str
);
3942 if (fval
> 0 && (val
& fval
) == fval
) {
3943 if (print
&& arg
->flags
.delim
)
3944 trace_seq_puts(s
, arg
->flags
.delim
);
3945 print_str_to_seq(s
, format
, len_arg
, flag
->str
);
3952 val
= eval_num_arg(data
, size
, event
, arg
->symbol
.field
);
3953 for (flag
= arg
->symbol
.symbols
; flag
; flag
= flag
->next
) {
3954 fval
= eval_flag(flag
->value
);
3956 print_str_to_seq(s
, format
, len_arg
, flag
->str
);
3962 if (arg
->hex
.field
->type
== PRINT_DYNAMIC_ARRAY
) {
3963 unsigned long offset
;
3964 offset
= pevent_read_number(pevent
,
3965 data
+ arg
->hex
.field
->dynarray
.field
->offset
,
3966 arg
->hex
.field
->dynarray
.field
->size
);
3967 hex
= data
+ (offset
& 0xffff);
3969 field
= arg
->hex
.field
->field
.field
;
3971 str
= arg
->hex
.field
->field
.name
;
3972 field
= pevent_find_any_field(event
, str
);
3974 goto out_warning_field
;
3975 arg
->hex
.field
->field
.field
= field
;
3977 hex
= data
+ field
->offset
;
3979 len
= eval_num_arg(data
, size
, event
, arg
->hex
.size
);
3980 for (i
= 0; i
< len
; i
++) {
3982 trace_seq_putc(s
, ' ');
3983 trace_seq_printf(s
, "%02x", hex
[i
]);
3987 case PRINT_INT_ARRAY
: {
3991 if (arg
->int_array
.field
->type
== PRINT_DYNAMIC_ARRAY
) {
3992 unsigned long offset
;
3993 struct format_field
*field
=
3994 arg
->int_array
.field
->dynarray
.field
;
3995 offset
= pevent_read_number(pevent
,
3996 data
+ field
->offset
,
3998 num
= data
+ (offset
& 0xffff);
4000 field
= arg
->int_array
.field
->field
.field
;
4002 str
= arg
->int_array
.field
->field
.name
;
4003 field
= pevent_find_any_field(event
, str
);
4005 goto out_warning_field
;
4006 arg
->int_array
.field
->field
.field
= field
;
4008 num
= data
+ field
->offset
;
4010 len
= eval_num_arg(data
, size
, event
, arg
->int_array
.count
);
4011 el_size
= eval_num_arg(data
, size
, event
,
4012 arg
->int_array
.el_size
);
4013 for (i
= 0; i
< len
; i
++) {
4015 trace_seq_putc(s
, ' ');
4018 trace_seq_printf(s
, "%u", *(uint8_t *)num
);
4019 } else if (el_size
== 2) {
4020 trace_seq_printf(s
, "%u", *(uint16_t *)num
);
4021 } else if (el_size
== 4) {
4022 trace_seq_printf(s
, "%u", *(uint32_t *)num
);
4023 } else if (el_size
== 8) {
4024 trace_seq_printf(s
, "%"PRIu64
, *(uint64_t *)num
);
4026 trace_seq_printf(s
, "BAD SIZE:%d 0x%x",
4027 el_size
, *(uint8_t *)num
);
4037 case PRINT_STRING
: {
4040 if (arg
->string
.offset
== -1) {
4041 struct format_field
*f
;
4043 f
= pevent_find_any_field(event
, arg
->string
.string
);
4044 arg
->string
.offset
= f
->offset
;
4046 str_offset
= data2host4(pevent
, data
+ arg
->string
.offset
);
4047 str_offset
&= 0xffff;
4048 print_str_to_seq(s
, format
, len_arg
, ((char *)data
) + str_offset
);
4052 print_str_to_seq(s
, format
, len_arg
, arg
->string
.string
);
4054 case PRINT_BITMASK
: {
4058 if (arg
->bitmask
.offset
== -1) {
4059 struct format_field
*f
;
4061 f
= pevent_find_any_field(event
, arg
->bitmask
.bitmask
);
4062 arg
->bitmask
.offset
= f
->offset
;
4064 bitmask_offset
= data2host4(pevent
, data
+ arg
->bitmask
.offset
);
4065 bitmask_size
= bitmask_offset
>> 16;
4066 bitmask_offset
&= 0xffff;
4067 print_bitmask_to_seq(pevent
, s
, format
, len_arg
,
4068 data
+ bitmask_offset
, bitmask_size
);
4073 * The only op for string should be ? :
4075 if (arg
->op
.op
[0] != '?')
4077 val
= eval_num_arg(data
, size
, event
, arg
->op
.left
);
4079 print_str_arg(s
, data
, size
, event
,
4080 format
, len_arg
, arg
->op
.right
->op
.left
);
4082 print_str_arg(s
, data
, size
, event
,
4083 format
, len_arg
, arg
->op
.right
->op
.right
);
4086 process_defined_func(s
, data
, size
, event
, arg
);
4096 do_warning_event(event
, "%s: field %s not found",
4097 __func__
, arg
->field
.name
);
4100 static unsigned long long
4101 process_defined_func(struct trace_seq
*s
, void *data
, int size
,
4102 struct event_format
*event
, struct print_arg
*arg
)
4104 struct pevent_function_handler
*func_handle
= arg
->func
.func
;
4105 struct pevent_func_params
*param
;
4106 unsigned long long *args
;
4107 unsigned long long ret
;
4108 struct print_arg
*farg
;
4109 struct trace_seq str
;
4111 struct save_str
*next
;
4113 } *strings
= NULL
, *string
;
4116 if (!func_handle
->nr_args
) {
4117 ret
= (*func_handle
->func
)(s
, NULL
);
4121 farg
= arg
->func
.args
;
4122 param
= func_handle
->params
;
4125 args
= malloc(sizeof(*args
) * func_handle
->nr_args
);
4129 for (i
= 0; i
< func_handle
->nr_args
; i
++) {
4130 switch (param
->type
) {
4131 case PEVENT_FUNC_ARG_INT
:
4132 case PEVENT_FUNC_ARG_LONG
:
4133 case PEVENT_FUNC_ARG_PTR
:
4134 args
[i
] = eval_num_arg(data
, size
, event
, farg
);
4136 case PEVENT_FUNC_ARG_STRING
:
4137 trace_seq_init(&str
);
4138 print_str_arg(&str
, data
, size
, event
, "%s", -1, farg
);
4139 trace_seq_terminate(&str
);
4140 string
= malloc(sizeof(*string
));
4142 do_warning_event(event
, "%s(%d): malloc str",
4143 __func__
, __LINE__
);
4146 string
->next
= strings
;
4147 string
->str
= strdup(str
.buffer
);
4150 do_warning_event(event
, "%s(%d): malloc str",
4151 __func__
, __LINE__
);
4154 args
[i
] = (uintptr_t)string
->str
;
4156 trace_seq_destroy(&str
);
4160 * Something went totally wrong, this is not
4161 * an input error, something in this code broke.
4163 do_warning_event(event
, "Unexpected end of arguments\n");
4167 param
= param
->next
;
4170 ret
= (*func_handle
->func
)(s
, args
);
4175 strings
= string
->next
;
4181 /* TBD : handle return type here */
4185 static void free_args(struct print_arg
*args
)
4187 struct print_arg
*next
;
4197 static struct print_arg
*make_bprint_args(char *fmt
, void *data
, int size
, struct event_format
*event
)
4199 struct pevent
*pevent
= event
->pevent
;
4200 struct format_field
*field
, *ip_field
;
4201 struct print_arg
*args
, *arg
, **next
;
4202 unsigned long long ip
, val
;
4207 field
= pevent
->bprint_buf_field
;
4208 ip_field
= pevent
->bprint_ip_field
;
4211 field
= pevent_find_field(event
, "buf");
4213 do_warning_event(event
, "can't find buffer field for binary printk");
4216 ip_field
= pevent_find_field(event
, "ip");
4218 do_warning_event(event
, "can't find ip field for binary printk");
4221 pevent
->bprint_buf_field
= field
;
4222 pevent
->bprint_ip_field
= ip_field
;
4225 ip
= pevent_read_number(pevent
, data
+ ip_field
->offset
, ip_field
->size
);
4228 * The first arg is the IP pointer.
4232 do_warning_event(event
, "%s(%d): not enough memory!",
4233 __func__
, __LINE__
);
4240 arg
->type
= PRINT_ATOM
;
4242 if (asprintf(&arg
->atom
.atom
, "%lld", ip
) < 0)
4245 /* skip the first "%ps: " */
4246 for (ptr
= fmt
+ 5, bptr
= data
+ field
->offset
;
4247 bptr
< data
+ size
&& *ptr
; ptr
++) {
4282 vsize
= pevent
->long_size
;
4296 /* the pointers are always 4 bytes aligned */
4297 bptr
= (void *)(((unsigned long)bptr
+ 3) &
4299 val
= pevent_read_number(pevent
, bptr
, vsize
);
4303 do_warning_event(event
, "%s(%d): not enough memory!",
4304 __func__
, __LINE__
);
4308 arg
->type
= PRINT_ATOM
;
4309 if (asprintf(&arg
->atom
.atom
, "%lld", val
) < 0) {
4316 * The '*' case means that an arg is used as the length.
4317 * We need to continue to figure out for what.
4326 do_warning_event(event
, "%s(%d): not enough memory!",
4327 __func__
, __LINE__
);
4331 arg
->type
= PRINT_BSTRING
;
4332 arg
->string
.string
= strdup(bptr
);
4333 if (!arg
->string
.string
)
4335 bptr
+= strlen(bptr
) + 1;
4352 get_bprint_format(void *data
, int size __maybe_unused
,
4353 struct event_format
*event
)
4355 struct pevent
*pevent
= event
->pevent
;
4356 unsigned long long addr
;
4357 struct format_field
*field
;
4358 struct printk_map
*printk
;
4361 field
= pevent
->bprint_fmt_field
;
4364 field
= pevent_find_field(event
, "fmt");
4366 do_warning_event(event
, "can't find format field for binary printk");
4369 pevent
->bprint_fmt_field
= field
;
4372 addr
= pevent_read_number(pevent
, data
+ field
->offset
, field
->size
);
4374 printk
= find_printk(pevent
, addr
);
4376 if (asprintf(&format
, "%%pf: (NO FORMAT FOUND at %llx)\n", addr
) < 0)
4381 if (asprintf(&format
, "%s: %s", "%pf", printk
->printk
) < 0)
4387 static void print_mac_arg(struct trace_seq
*s
, int mac
, void *data
, int size
,
4388 struct event_format
*event
, struct print_arg
*arg
)
4391 const char *fmt
= "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x";
4393 if (arg
->type
== PRINT_FUNC
) {
4394 process_defined_func(s
, data
, size
, event
, arg
);
4398 if (arg
->type
!= PRINT_FIELD
) {
4399 trace_seq_printf(s
, "ARG TYPE NOT FIELD BUT %d",
4405 fmt
= "%.2x%.2x%.2x%.2x%.2x%.2x";
4406 if (!arg
->field
.field
) {
4408 pevent_find_any_field(event
, arg
->field
.name
);
4409 if (!arg
->field
.field
) {
4410 do_warning_event(event
, "%s: field %s not found",
4411 __func__
, arg
->field
.name
);
4415 if (arg
->field
.field
->size
!= 6) {
4416 trace_seq_printf(s
, "INVALIDMAC");
4419 buf
= data
+ arg
->field
.field
->offset
;
4420 trace_seq_printf(s
, fmt
, buf
[0], buf
[1], buf
[2], buf
[3], buf
[4], buf
[5]);
4423 static void print_ip4_addr(struct trace_seq
*s
, char i
, unsigned char *buf
)
4428 fmt
= "%03d.%03d.%03d.%03d";
4430 fmt
= "%d.%d.%d.%d";
4432 trace_seq_printf(s
, fmt
, buf
[0], buf
[1], buf
[2], buf
[3]);
4435 static inline bool ipv6_addr_v4mapped(const struct in6_addr
*a
)
4437 return ((unsigned long)(a
->s6_addr32
[0] | a
->s6_addr32
[1]) |
4438 (unsigned long)(a
->s6_addr32
[2] ^ htonl(0x0000ffff))) == 0UL;
4441 static inline bool ipv6_addr_is_isatap(const struct in6_addr
*addr
)
4443 return (addr
->s6_addr32
[2] | htonl(0x02000000)) == htonl(0x02005EFE);
4446 static void print_ip6c_addr(struct trace_seq
*s
, unsigned char *addr
)
4449 unsigned char zerolength
[8];
4454 bool needcolon
= false;
4456 struct in6_addr in6
;
4458 memcpy(&in6
, addr
, sizeof(struct in6_addr
));
4460 useIPv4
= ipv6_addr_v4mapped(&in6
) || ipv6_addr_is_isatap(&in6
);
4462 memset(zerolength
, 0, sizeof(zerolength
));
4469 /* find position of longest 0 run */
4470 for (i
= 0; i
< range
; i
++) {
4471 for (j
= i
; j
< range
; j
++) {
4472 if (in6
.s6_addr16
[j
] != 0)
4477 for (i
= 0; i
< range
; i
++) {
4478 if (zerolength
[i
] > longest
) {
4479 longest
= zerolength
[i
];
4483 if (longest
== 1) /* don't compress a single 0 */
4487 for (i
= 0; i
< range
; i
++) {
4488 if (i
== colonpos
) {
4489 if (needcolon
|| i
== 0)
4490 trace_seq_printf(s
, ":");
4491 trace_seq_printf(s
, ":");
4497 trace_seq_printf(s
, ":");
4500 /* hex u16 without leading 0s */
4501 word
= ntohs(in6
.s6_addr16
[i
]);
4505 trace_seq_printf(s
, "%x%02x", hi
, lo
);
4507 trace_seq_printf(s
, "%x", lo
);
4514 trace_seq_printf(s
, ":");
4515 print_ip4_addr(s
, 'I', &in6
.s6_addr
[12]);
4521 static void print_ip6_addr(struct trace_seq
*s
, char i
, unsigned char *buf
)
4525 for (j
= 0; j
< 16; j
+= 2) {
4526 trace_seq_printf(s
, "%02x%02x", buf
[j
], buf
[j
+1]);
4527 if (i
== 'I' && j
< 14)
4528 trace_seq_printf(s
, ":");
4533 * %pi4 print an IPv4 address with leading zeros
4534 * %pI4 print an IPv4 address without leading zeros
4535 * %pi6 print an IPv6 address without colons
4536 * %pI6 print an IPv6 address with colons
4537 * %pI6c print an IPv6 address in compressed form with colons
4538 * %pISpc print an IP address based on sockaddr; p adds port.
4540 static int print_ipv4_arg(struct trace_seq
*s
, const char *ptr
, char i
,
4541 void *data
, int size
, struct event_format
*event
,
4542 struct print_arg
*arg
)
4546 if (arg
->type
== PRINT_FUNC
) {
4547 process_defined_func(s
, data
, size
, event
, arg
);
4551 if (arg
->type
!= PRINT_FIELD
) {
4552 trace_seq_printf(s
, "ARG TYPE NOT FIELD BUT %d", arg
->type
);
4556 if (!arg
->field
.field
) {
4558 pevent_find_any_field(event
, arg
->field
.name
);
4559 if (!arg
->field
.field
) {
4560 do_warning("%s: field %s not found",
4561 __func__
, arg
->field
.name
);
4566 buf
= data
+ arg
->field
.field
->offset
;
4568 if (arg
->field
.field
->size
!= 4) {
4569 trace_seq_printf(s
, "INVALIDIPv4");
4572 print_ip4_addr(s
, i
, buf
);
4577 static int print_ipv6_arg(struct trace_seq
*s
, const char *ptr
, char i
,
4578 void *data
, int size
, struct event_format
*event
,
4579 struct print_arg
*arg
)
4586 if (i
== 'I' && *ptr
== 'c') {
4592 if (arg
->type
== PRINT_FUNC
) {
4593 process_defined_func(s
, data
, size
, event
, arg
);
4597 if (arg
->type
!= PRINT_FIELD
) {
4598 trace_seq_printf(s
, "ARG TYPE NOT FIELD BUT %d", arg
->type
);
4602 if (!arg
->field
.field
) {
4604 pevent_find_any_field(event
, arg
->field
.name
);
4605 if (!arg
->field
.field
) {
4606 do_warning("%s: field %s not found",
4607 __func__
, arg
->field
.name
);
4612 buf
= data
+ arg
->field
.field
->offset
;
4614 if (arg
->field
.field
->size
!= 16) {
4615 trace_seq_printf(s
, "INVALIDIPv6");
4620 print_ip6c_addr(s
, buf
);
4622 print_ip6_addr(s
, i
, buf
);
4627 static int print_ipsa_arg(struct trace_seq
*s
, const char *ptr
, char i
,
4628 void *data
, int size
, struct event_format
*event
,
4629 struct print_arg
*arg
)
4631 char have_c
= 0, have_p
= 0;
4633 struct sockaddr_storage
*sa
;
4650 if (arg
->type
== PRINT_FUNC
) {
4651 process_defined_func(s
, data
, size
, event
, arg
);
4655 if (arg
->type
!= PRINT_FIELD
) {
4656 trace_seq_printf(s
, "ARG TYPE NOT FIELD BUT %d", arg
->type
);
4660 if (!arg
->field
.field
) {
4662 pevent_find_any_field(event
, arg
->field
.name
);
4663 if (!arg
->field
.field
) {
4664 do_warning("%s: field %s not found",
4665 __func__
, arg
->field
.name
);
4670 sa
= (struct sockaddr_storage
*) (data
+ arg
->field
.field
->offset
);
4672 if (sa
->ss_family
== AF_INET
) {
4673 struct sockaddr_in
*sa4
= (struct sockaddr_in
*) sa
;
4675 if (arg
->field
.field
->size
< sizeof(struct sockaddr_in
)) {
4676 trace_seq_printf(s
, "INVALIDIPv4");
4680 print_ip4_addr(s
, i
, (unsigned char *) &sa4
->sin_addr
);
4682 trace_seq_printf(s
, ":%d", ntohs(sa4
->sin_port
));
4685 } else if (sa
->ss_family
== AF_INET6
) {
4686 struct sockaddr_in6
*sa6
= (struct sockaddr_in6
*) sa
;
4688 if (arg
->field
.field
->size
< sizeof(struct sockaddr_in6
)) {
4689 trace_seq_printf(s
, "INVALIDIPv6");
4694 trace_seq_printf(s
, "[");
4696 buf
= (unsigned char *) &sa6
->sin6_addr
;
4698 print_ip6c_addr(s
, buf
);
4700 print_ip6_addr(s
, i
, buf
);
4703 trace_seq_printf(s
, "]:%d", ntohs(sa6
->sin6_port
));
4709 static int print_ip_arg(struct trace_seq
*s
, const char *ptr
,
4710 void *data
, int size
, struct event_format
*event
,
4711 struct print_arg
*arg
)
4713 char i
= *ptr
; /* 'i' or 'I' */
4726 rc
+= print_ipv4_arg(s
, ptr
, i
, data
, size
, event
, arg
);
4729 rc
+= print_ipv6_arg(s
, ptr
, i
, data
, size
, event
, arg
);
4732 rc
+= print_ipsa_arg(s
, ptr
, i
, data
, size
, event
, arg
);
4741 static int is_printable_array(char *p
, unsigned int len
)
4745 for (i
= 0; i
< len
&& p
[i
]; i
++)
4746 if (!isprint(p
[i
]) && !isspace(p
[i
]))
4751 void pevent_print_field(struct trace_seq
*s
, void *data
,
4752 struct format_field
*field
)
4754 unsigned long long val
;
4755 unsigned int offset
, len
, i
;
4756 struct pevent
*pevent
= field
->event
->pevent
;
4758 if (field
->flags
& FIELD_IS_ARRAY
) {
4759 offset
= field
->offset
;
4761 if (field
->flags
& FIELD_IS_DYNAMIC
) {
4762 val
= pevent_read_number(pevent
, data
+ offset
, len
);
4767 if (field
->flags
& FIELD_IS_STRING
&&
4768 is_printable_array(data
+ offset
, len
)) {
4769 trace_seq_printf(s
, "%s", (char *)data
+ offset
);
4771 trace_seq_puts(s
, "ARRAY[");
4772 for (i
= 0; i
< len
; i
++) {
4774 trace_seq_puts(s
, ", ");
4775 trace_seq_printf(s
, "%02x",
4776 *((unsigned char *)data
+ offset
+ i
));
4778 trace_seq_putc(s
, ']');
4779 field
->flags
&= ~FIELD_IS_STRING
;
4782 val
= pevent_read_number(pevent
, data
+ field
->offset
,
4784 if (field
->flags
& FIELD_IS_POINTER
) {
4785 trace_seq_printf(s
, "0x%llx", val
);
4786 } else if (field
->flags
& FIELD_IS_SIGNED
) {
4787 switch (field
->size
) {
4790 * If field is long then print it in hex.
4791 * A long usually stores pointers.
4793 if (field
->flags
& FIELD_IS_LONG
)
4794 trace_seq_printf(s
, "0x%x", (int)val
);
4796 trace_seq_printf(s
, "%d", (int)val
);
4799 trace_seq_printf(s
, "%2d", (short)val
);
4802 trace_seq_printf(s
, "%1d", (char)val
);
4805 trace_seq_printf(s
, "%lld", val
);
4808 if (field
->flags
& FIELD_IS_LONG
)
4809 trace_seq_printf(s
, "0x%llx", val
);
4811 trace_seq_printf(s
, "%llu", val
);
4816 void pevent_print_fields(struct trace_seq
*s
, void *data
,
4817 int size __maybe_unused
, struct event_format
*event
)
4819 struct format_field
*field
;
4821 field
= event
->format
.fields
;
4823 trace_seq_printf(s
, " %s=", field
->name
);
4824 pevent_print_field(s
, data
, field
);
4825 field
= field
->next
;
4829 static void pretty_print(struct trace_seq
*s
, void *data
, int size
, struct event_format
*event
)
4831 struct pevent
*pevent
= event
->pevent
;
4832 struct print_fmt
*print_fmt
= &event
->print_fmt
;
4833 struct print_arg
*arg
= print_fmt
->args
;
4834 struct print_arg
*args
= NULL
;
4835 const char *ptr
= print_fmt
->format
;
4836 unsigned long long val
;
4837 struct func_map
*func
;
4838 const char *saveptr
;
4840 char *bprint_fmt
= NULL
;
4848 if (event
->flags
& EVENT_FL_FAILED
) {
4849 trace_seq_printf(s
, "[FAILED TO PARSE]");
4850 pevent_print_fields(s
, data
, size
, event
);
4854 if (event
->flags
& EVENT_FL_ISBPRINT
) {
4855 bprint_fmt
= get_bprint_format(data
, size
, event
);
4856 args
= make_bprint_args(bprint_fmt
, data
, size
, event
);
4861 for (; *ptr
; ptr
++) {
4867 trace_seq_putc(s
, '\n');
4870 trace_seq_putc(s
, '\t');
4873 trace_seq_putc(s
, '\r');
4876 trace_seq_putc(s
, '\\');
4879 trace_seq_putc(s
, *ptr
);
4883 } else if (*ptr
== '%') {
4891 trace_seq_putc(s
, '%');
4894 /* FIXME: need to handle properly */
4906 /* The argument is the length. */
4908 do_warning_event(event
, "no argument match");
4909 event
->flags
|= EVENT_FL_FAILED
;
4912 len_arg
= eval_num_arg(data
, size
, event
, arg
);
4923 if (pevent
->long_size
== 4)
4928 if (*(ptr
+1) == 'F' || *(ptr
+1) == 'f' ||
4929 *(ptr
+1) == 'S' || *(ptr
+1) == 's') {
4932 } else if (*(ptr
+1) == 'M' || *(ptr
+1) == 'm') {
4933 print_mac_arg(s
, *(ptr
+1), data
, size
, event
, arg
);
4937 } else if (*(ptr
+1) == 'I' || *(ptr
+1) == 'i') {
4940 n
= print_ip_arg(s
, ptr
+1, data
, size
, event
, arg
);
4955 do_warning_event(event
, "no argument match");
4956 event
->flags
|= EVENT_FL_FAILED
;
4960 len
= ((unsigned long)ptr
+ 1) -
4961 (unsigned long)saveptr
;
4963 /* should never happen */
4965 do_warning_event(event
, "bad format!");
4966 event
->flags
|= EVENT_FL_FAILED
;
4970 memcpy(format
, saveptr
, len
);
4973 val
= eval_num_arg(data
, size
, event
, arg
);
4977 func
= find_func(pevent
, val
);
4979 trace_seq_puts(s
, func
->func
);
4980 if (show_func
== 'F')
4987 if (pevent
->long_size
== 8 && ls
== 1 &&
4988 sizeof(long) != 8) {
4991 /* make %l into %ll */
4992 if (ls
== 1 && (p
= strchr(format
, 'l')))
4993 memmove(p
+1, p
, strlen(p
)+1);
4994 else if (strcmp(format
, "%p") == 0)
4995 strcpy(format
, "0x%llx");
5001 trace_seq_printf(s
, format
, len_arg
, (char)val
);
5003 trace_seq_printf(s
, format
, (char)val
);
5007 trace_seq_printf(s
, format
, len_arg
, (short)val
);
5009 trace_seq_printf(s
, format
, (short)val
);
5013 trace_seq_printf(s
, format
, len_arg
, (int)val
);
5015 trace_seq_printf(s
, format
, (int)val
);
5019 trace_seq_printf(s
, format
, len_arg
, (long)val
);
5021 trace_seq_printf(s
, format
, (long)val
);
5025 trace_seq_printf(s
, format
, len_arg
,
5028 trace_seq_printf(s
, format
, (long long)val
);
5031 do_warning_event(event
, "bad count (%d)", ls
);
5032 event
->flags
|= EVENT_FL_FAILED
;
5037 do_warning_event(event
, "no matching argument");
5038 event
->flags
|= EVENT_FL_FAILED
;
5042 len
= ((unsigned long)ptr
+ 1) -
5043 (unsigned long)saveptr
;
5045 /* should never happen */
5047 do_warning_event(event
, "bad format!");
5048 event
->flags
|= EVENT_FL_FAILED
;
5052 memcpy(format
, saveptr
, len
);
5056 /* Use helper trace_seq */
5058 print_str_arg(&p
, data
, size
, event
,
5059 format
, len_arg
, arg
);
5060 trace_seq_terminate(&p
);
5061 trace_seq_puts(s
, p
.buffer
);
5062 trace_seq_destroy(&p
);
5066 trace_seq_printf(s
, ">%c<", *ptr
);
5070 trace_seq_putc(s
, *ptr
);
5073 if (event
->flags
& EVENT_FL_FAILED
) {
5075 trace_seq_printf(s
, "[FAILED TO PARSE]");
5085 * pevent_data_lat_fmt - parse the data for the latency format
5086 * @pevent: a handle to the pevent
5087 * @s: the trace_seq to write to
5088 * @record: the record to read from
5090 * This parses out the Latency format (interrupts disabled,
5091 * need rescheduling, in hard/soft interrupt, preempt count
5092 * and lock depth) and places it into the trace_seq.
5094 void pevent_data_lat_fmt(struct pevent
*pevent
,
5095 struct trace_seq
*s
, struct pevent_record
*record
)
5097 static int check_lock_depth
= 1;
5098 static int check_migrate_disable
= 1;
5099 static int lock_depth_exists
;
5100 static int migrate_disable_exists
;
5101 unsigned int lat_flags
;
5104 int migrate_disable
;
5107 void *data
= record
->data
;
5109 lat_flags
= parse_common_flags(pevent
, data
);
5110 pc
= parse_common_pc(pevent
, data
);
5111 /* lock_depth may not always exist */
5112 if (lock_depth_exists
)
5113 lock_depth
= parse_common_lock_depth(pevent
, data
);
5114 else if (check_lock_depth
) {
5115 lock_depth
= parse_common_lock_depth(pevent
, data
);
5117 check_lock_depth
= 0;
5119 lock_depth_exists
= 1;
5122 /* migrate_disable may not always exist */
5123 if (migrate_disable_exists
)
5124 migrate_disable
= parse_common_migrate_disable(pevent
, data
);
5125 else if (check_migrate_disable
) {
5126 migrate_disable
= parse_common_migrate_disable(pevent
, data
);
5127 if (migrate_disable
< 0)
5128 check_migrate_disable
= 0;
5130 migrate_disable_exists
= 1;
5133 hardirq
= lat_flags
& TRACE_FLAG_HARDIRQ
;
5134 softirq
= lat_flags
& TRACE_FLAG_SOFTIRQ
;
5136 trace_seq_printf(s
, "%c%c%c",
5137 (lat_flags
& TRACE_FLAG_IRQS_OFF
) ? 'd' :
5138 (lat_flags
& TRACE_FLAG_IRQS_NOSUPPORT
) ?
5140 (lat_flags
& TRACE_FLAG_NEED_RESCHED
) ?
5142 (hardirq
&& softirq
) ? 'H' :
5143 hardirq
? 'h' : softirq
? 's' : '.');
5146 trace_seq_printf(s
, "%x", pc
);
5148 trace_seq_putc(s
, '.');
5150 if (migrate_disable_exists
) {
5151 if (migrate_disable
< 0)
5152 trace_seq_putc(s
, '.');
5154 trace_seq_printf(s
, "%d", migrate_disable
);
5157 if (lock_depth_exists
) {
5159 trace_seq_putc(s
, '.');
5161 trace_seq_printf(s
, "%d", lock_depth
);
5164 trace_seq_terminate(s
);
5168 * pevent_data_type - parse out the given event type
5169 * @pevent: a handle to the pevent
5170 * @rec: the record to read from
5172 * This returns the event id from the @rec.
5174 int pevent_data_type(struct pevent
*pevent
, struct pevent_record
*rec
)
5176 return trace_parse_common_type(pevent
, rec
->data
);
5180 * pevent_data_event_from_type - find the event by a given type
5181 * @pevent: a handle to the pevent
5182 * @type: the type of the event.
5184 * This returns the event form a given @type;
5186 struct event_format
*pevent_data_event_from_type(struct pevent
*pevent
, int type
)
5188 return pevent_find_event(pevent
, type
);
5192 * pevent_data_pid - parse the PID from raw data
5193 * @pevent: a handle to the pevent
5194 * @rec: the record to parse
5196 * This returns the PID from a raw data.
5198 int pevent_data_pid(struct pevent
*pevent
, struct pevent_record
*rec
)
5200 return parse_common_pid(pevent
, rec
->data
);
5204 * pevent_data_comm_from_pid - return the command line from PID
5205 * @pevent: a handle to the pevent
5206 * @pid: the PID of the task to search for
5208 * This returns a pointer to the command line that has the given
5211 const char *pevent_data_comm_from_pid(struct pevent
*pevent
, int pid
)
5215 comm
= find_cmdline(pevent
, pid
);
5219 static struct cmdline
*
5220 pid_from_cmdlist(struct pevent
*pevent
, const char *comm
, struct cmdline
*next
)
5222 struct cmdline_list
*cmdlist
= (struct cmdline_list
*)next
;
5225 cmdlist
= cmdlist
->next
;
5227 cmdlist
= pevent
->cmdlist
;
5229 while (cmdlist
&& strcmp(cmdlist
->comm
, comm
) != 0)
5230 cmdlist
= cmdlist
->next
;
5232 return (struct cmdline
*)cmdlist
;
5236 * pevent_data_pid_from_comm - return the pid from a given comm
5237 * @pevent: a handle to the pevent
5238 * @comm: the cmdline to find the pid from
5239 * @next: the cmdline structure to find the next comm
5241 * This returns the cmdline structure that holds a pid for a given
5242 * comm, or NULL if none found. As there may be more than one pid for
5243 * a given comm, the result of this call can be passed back into
5244 * a recurring call in the @next paramater, and then it will find the
5246 * Also, it does a linear seach, so it may be slow.
5248 struct cmdline
*pevent_data_pid_from_comm(struct pevent
*pevent
, const char *comm
,
5249 struct cmdline
*next
)
5251 struct cmdline
*cmdline
;
5254 * If the cmdlines have not been converted yet, then use
5257 if (!pevent
->cmdlines
)
5258 return pid_from_cmdlist(pevent
, comm
, next
);
5262 * The next pointer could have been still from
5263 * a previous call before cmdlines were created
5265 if (next
< pevent
->cmdlines
||
5266 next
>= pevent
->cmdlines
+ pevent
->cmdline_count
)
5273 cmdline
= pevent
->cmdlines
;
5275 while (cmdline
< pevent
->cmdlines
+ pevent
->cmdline_count
) {
5276 if (strcmp(cmdline
->comm
, comm
) == 0)
5284 * pevent_cmdline_pid - return the pid associated to a given cmdline
5285 * @cmdline: The cmdline structure to get the pid from
5287 * Returns the pid for a give cmdline. If @cmdline is NULL, then
5290 int pevent_cmdline_pid(struct pevent
*pevent
, struct cmdline
*cmdline
)
5292 struct cmdline_list
*cmdlist
= (struct cmdline_list
*)cmdline
;
5298 * If cmdlines have not been created yet, or cmdline is
5299 * not part of the array, then treat it as a cmdlist instead.
5301 if (!pevent
->cmdlines
||
5302 cmdline
< pevent
->cmdlines
||
5303 cmdline
>= pevent
->cmdlines
+ pevent
->cmdline_count
)
5304 return cmdlist
->pid
;
5306 return cmdline
->pid
;
5310 * pevent_data_comm_from_pid - parse the data into the print format
5311 * @s: the trace_seq to write to
5312 * @event: the handle to the event
5313 * @record: the record to read from
5315 * This parses the raw @data using the given @event information and
5316 * writes the print format into the trace_seq.
5318 void pevent_event_info(struct trace_seq
*s
, struct event_format
*event
,
5319 struct pevent_record
*record
)
5321 int print_pretty
= 1;
5323 if (event
->pevent
->print_raw
|| (event
->flags
& EVENT_FL_PRINTRAW
))
5324 pevent_print_fields(s
, record
->data
, record
->size
, event
);
5327 if (event
->handler
&& !(event
->flags
& EVENT_FL_NOHANDLE
))
5328 print_pretty
= event
->handler(s
, record
, event
,
5332 pretty_print(s
, record
->data
, record
->size
, event
);
5335 trace_seq_terminate(s
);
5338 static bool is_timestamp_in_us(char *trace_clock
, bool use_trace_clock
)
5340 if (!use_trace_clock
)
5343 if (!strcmp(trace_clock
, "local") || !strcmp(trace_clock
, "global")
5344 || !strcmp(trace_clock
, "uptime") || !strcmp(trace_clock
, "perf"))
5347 /* trace_clock is setting in tsc or counter mode */
5352 * pevent_find_event_by_record - return the event from a given record
5353 * @pevent: a handle to the pevent
5354 * @record: The record to get the event from
5356 * Returns the associated event for a given record, or NULL if non is
5359 struct event_format
*
5360 pevent_find_event_by_record(struct pevent
*pevent
, struct pevent_record
*record
)
5364 if (record
->size
< 0) {
5365 do_warning("ug! negative record size %d", record
->size
);
5369 type
= trace_parse_common_type(pevent
, record
->data
);
5371 return pevent_find_event(pevent
, type
);
5375 * pevent_print_event_task - Write the event task comm, pid and CPU
5376 * @pevent: a handle to the pevent
5377 * @s: the trace_seq to write to
5378 * @event: the handle to the record's event
5379 * @record: The record to get the event from
5381 * Writes the tasks comm, pid and CPU to @s.
5383 void pevent_print_event_task(struct pevent
*pevent
, struct trace_seq
*s
,
5384 struct event_format
*event
,
5385 struct pevent_record
*record
)
5387 void *data
= record
->data
;
5391 pid
= parse_common_pid(pevent
, data
);
5392 comm
= find_cmdline(pevent
, pid
);
5394 if (pevent
->latency_format
) {
5395 trace_seq_printf(s
, "%8.8s-%-5d %3d",
5396 comm
, pid
, record
->cpu
);
5398 trace_seq_printf(s
, "%16s-%-5d [%03d]", comm
, pid
, record
->cpu
);
5402 * pevent_print_event_time - Write the event timestamp
5403 * @pevent: a handle to the pevent
5404 * @s: the trace_seq to write to
5405 * @event: the handle to the record's event
5406 * @record: The record to get the event from
5407 * @use_trace_clock: Set to parse according to the @pevent->trace_clock
5409 * Writes the timestamp of the record into @s.
5411 void pevent_print_event_time(struct pevent
*pevent
, struct trace_seq
*s
,
5412 struct event_format
*event
,
5413 struct pevent_record
*record
,
5414 bool use_trace_clock
)
5417 unsigned long usecs
;
5418 unsigned long nsecs
;
5420 bool use_usec_format
;
5422 use_usec_format
= is_timestamp_in_us(pevent
->trace_clock
,
5424 if (use_usec_format
) {
5425 secs
= record
->ts
/ NSECS_PER_SEC
;
5426 nsecs
= record
->ts
- secs
* NSECS_PER_SEC
;
5429 if (pevent
->latency_format
) {
5430 pevent_data_lat_fmt(pevent
, s
, record
);
5433 if (use_usec_format
) {
5434 if (pevent
->flags
& PEVENT_NSEC_OUTPUT
) {
5438 usecs
= (nsecs
+ 500) / NSECS_PER_USEC
;
5439 /* To avoid usecs larger than 1 sec */
5440 if (usecs
>= 1000000) {
5447 trace_seq_printf(s
, " %5lu.%0*lu:", secs
, p
, usecs
);
5449 trace_seq_printf(s
, " %12llu:", record
->ts
);
5453 * pevent_print_event_data - Write the event data section
5454 * @pevent: a handle to the pevent
5455 * @s: the trace_seq to write to
5456 * @event: the handle to the record's event
5457 * @record: The record to get the event from
5459 * Writes the parsing of the record's data to @s.
5461 void pevent_print_event_data(struct pevent
*pevent
, struct trace_seq
*s
,
5462 struct event_format
*event
,
5463 struct pevent_record
*record
)
5465 static const char *spaces
= " "; /* 20 spaces */
5468 trace_seq_printf(s
, " %s: ", event
->name
);
5470 /* Space out the event names evenly. */
5471 len
= strlen(event
->name
);
5473 trace_seq_printf(s
, "%.*s", 20 - len
, spaces
);
5475 pevent_event_info(s
, event
, record
);
5478 void pevent_print_event(struct pevent
*pevent
, struct trace_seq
*s
,
5479 struct pevent_record
*record
, bool use_trace_clock
)
5481 struct event_format
*event
;
5483 event
= pevent_find_event_by_record(pevent
, record
);
5485 do_warning("ug! no event found for type %d",
5486 trace_parse_common_type(pevent
, record
->data
));
5490 pevent_print_event_task(pevent
, s
, event
, record
);
5491 pevent_print_event_time(pevent
, s
, event
, record
, use_trace_clock
);
5492 pevent_print_event_data(pevent
, s
, event
, record
);
5495 static int events_id_cmp(const void *a
, const void *b
)
5497 struct event_format
* const * ea
= a
;
5498 struct event_format
* const * eb
= b
;
5500 if ((*ea
)->id
< (*eb
)->id
)
5503 if ((*ea
)->id
> (*eb
)->id
)
5509 static int events_name_cmp(const void *a
, const void *b
)
5511 struct event_format
* const * ea
= a
;
5512 struct event_format
* const * eb
= b
;
5515 res
= strcmp((*ea
)->name
, (*eb
)->name
);
5519 res
= strcmp((*ea
)->system
, (*eb
)->system
);
5523 return events_id_cmp(a
, b
);
5526 static int events_system_cmp(const void *a
, const void *b
)
5528 struct event_format
* const * ea
= a
;
5529 struct event_format
* const * eb
= b
;
5532 res
= strcmp((*ea
)->system
, (*eb
)->system
);
5536 res
= strcmp((*ea
)->name
, (*eb
)->name
);
5540 return events_id_cmp(a
, b
);
5543 struct event_format
**pevent_list_events(struct pevent
*pevent
, enum event_sort_type sort_type
)
5545 struct event_format
**events
;
5546 int (*sort
)(const void *a
, const void *b
);
5548 events
= pevent
->sort_events
;
5550 if (events
&& pevent
->last_type
== sort_type
)
5554 events
= malloc(sizeof(*events
) * (pevent
->nr_events
+ 1));
5558 memcpy(events
, pevent
->events
, sizeof(*events
) * pevent
->nr_events
);
5559 events
[pevent
->nr_events
] = NULL
;
5561 pevent
->sort_events
= events
;
5563 /* the internal events are sorted by id */
5564 if (sort_type
== EVENT_SORT_ID
) {
5565 pevent
->last_type
= sort_type
;
5570 switch (sort_type
) {
5572 sort
= events_id_cmp
;
5574 case EVENT_SORT_NAME
:
5575 sort
= events_name_cmp
;
5577 case EVENT_SORT_SYSTEM
:
5578 sort
= events_system_cmp
;
5584 qsort(events
, pevent
->nr_events
, sizeof(*events
), sort
);
5585 pevent
->last_type
= sort_type
;
5590 static struct format_field
**
5591 get_event_fields(const char *type
, const char *name
,
5592 int count
, struct format_field
*list
)
5594 struct format_field
**fields
;
5595 struct format_field
*field
;
5598 fields
= malloc(sizeof(*fields
) * (count
+ 1));
5602 for (field
= list
; field
; field
= field
->next
) {
5603 fields
[i
++] = field
;
5604 if (i
== count
+ 1) {
5605 do_warning("event %s has more %s fields than specified",
5613 do_warning("event %s has less %s fields than specified",
5622 * pevent_event_common_fields - return a list of common fields for an event
5623 * @event: the event to return the common fields of.
5625 * Returns an allocated array of fields. The last item in the array is NULL.
5626 * The array must be freed with free().
5628 struct format_field
**pevent_event_common_fields(struct event_format
*event
)
5630 return get_event_fields("common", event
->name
,
5631 event
->format
.nr_common
,
5632 event
->format
.common_fields
);
5636 * pevent_event_fields - return a list of event specific fields for an event
5637 * @event: the event to return the fields of.
5639 * Returns an allocated array of fields. The last item in the array is NULL.
5640 * The array must be freed with free().
5642 struct format_field
**pevent_event_fields(struct event_format
*event
)
5644 return get_event_fields("event", event
->name
,
5645 event
->format
.nr_fields
,
5646 event
->format
.fields
);
5649 static void print_fields(struct trace_seq
*s
, struct print_flag_sym
*field
)
5651 trace_seq_printf(s
, "{ %s, %s }", field
->value
, field
->str
);
5653 trace_seq_puts(s
, ", ");
5654 print_fields(s
, field
->next
);
5659 static void print_args(struct print_arg
*args
)
5661 int print_paren
= 1;
5664 switch (args
->type
) {
5669 printf("%s", args
->atom
.atom
);
5672 printf("REC->%s", args
->field
.name
);
5675 printf("__print_flags(");
5676 print_args(args
->flags
.field
);
5677 printf(", %s, ", args
->flags
.delim
);
5679 print_fields(&s
, args
->flags
.flags
);
5680 trace_seq_do_printf(&s
);
5681 trace_seq_destroy(&s
);
5685 printf("__print_symbolic(");
5686 print_args(args
->symbol
.field
);
5689 print_fields(&s
, args
->symbol
.symbols
);
5690 trace_seq_do_printf(&s
);
5691 trace_seq_destroy(&s
);
5695 printf("__print_hex(");
5696 print_args(args
->hex
.field
);
5698 print_args(args
->hex
.size
);
5701 case PRINT_INT_ARRAY
:
5702 printf("__print_array(");
5703 print_args(args
->int_array
.field
);
5705 print_args(args
->int_array
.count
);
5707 print_args(args
->int_array
.el_size
);
5712 printf("__get_str(%s)", args
->string
.string
);
5715 printf("__get_bitmask(%s)", args
->bitmask
.bitmask
);
5718 printf("(%s)", args
->typecast
.type
);
5719 print_args(args
->typecast
.item
);
5722 if (strcmp(args
->op
.op
, ":") == 0)
5726 print_args(args
->op
.left
);
5727 printf(" %s ", args
->op
.op
);
5728 print_args(args
->op
.right
);
5733 /* we should warn... */
5738 print_args(args
->next
);
5742 static void parse_header_field(const char *field
,
5743 int *offset
, int *size
, int mandatory
)
5745 unsigned long long save_input_buf_ptr
;
5746 unsigned long long save_input_buf_siz
;
5750 save_input_buf_ptr
= input_buf_ptr
;
5751 save_input_buf_siz
= input_buf_siz
;
5753 if (read_expected(EVENT_ITEM
, "field") < 0)
5755 if (read_expected(EVENT_OP
, ":") < 0)
5759 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
5764 * If this is not a mandatory field, then test it first.
5767 if (read_expected(EVENT_ITEM
, field
) < 0)
5770 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
5772 if (strcmp(token
, field
) != 0)
5777 if (read_expected(EVENT_OP
, ";") < 0)
5779 if (read_expected(EVENT_ITEM
, "offset") < 0)
5781 if (read_expected(EVENT_OP
, ":") < 0)
5783 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
5785 *offset
= atoi(token
);
5787 if (read_expected(EVENT_OP
, ";") < 0)
5789 if (read_expected(EVENT_ITEM
, "size") < 0)
5791 if (read_expected(EVENT_OP
, ":") < 0)
5793 if (read_expect_type(EVENT_ITEM
, &token
) < 0)
5795 *size
= atoi(token
);
5797 if (read_expected(EVENT_OP
, ";") < 0)
5799 type
= read_token(&token
);
5800 if (type
!= EVENT_NEWLINE
) {
5801 /* newer versions of the kernel have a "signed" type */
5802 if (type
!= EVENT_ITEM
)
5805 if (strcmp(token
, "signed") != 0)
5810 if (read_expected(EVENT_OP
, ":") < 0)
5813 if (read_expect_type(EVENT_ITEM
, &token
))
5817 if (read_expected(EVENT_OP
, ";") < 0)
5820 if (read_expect_type(EVENT_NEWLINE
, &token
))
5828 input_buf_ptr
= save_input_buf_ptr
;
5829 input_buf_siz
= save_input_buf_siz
;
5836 * pevent_parse_header_page - parse the data stored in the header page
5837 * @pevent: the handle to the pevent
5838 * @buf: the buffer storing the header page format string
5839 * @size: the size of @buf
5840 * @long_size: the long size to use if there is no header
5842 * This parses the header page format for information on the
5843 * ring buffer used. The @buf should be copied from
5845 * /sys/kernel/debug/tracing/events/header_page
5847 int pevent_parse_header_page(struct pevent
*pevent
, char *buf
, unsigned long size
,
5854 * Old kernels did not have header page info.
5855 * Sorry but we just use what we find here in user space.
5857 pevent
->header_page_ts_size
= sizeof(long long);
5858 pevent
->header_page_size_size
= long_size
;
5859 pevent
->header_page_data_offset
= sizeof(long long) + long_size
;
5860 pevent
->old_format
= 1;
5863 init_input_buf(buf
, size
);
5865 parse_header_field("timestamp", &pevent
->header_page_ts_offset
,
5866 &pevent
->header_page_ts_size
, 1);
5867 parse_header_field("commit", &pevent
->header_page_size_offset
,
5868 &pevent
->header_page_size_size
, 1);
5869 parse_header_field("overwrite", &pevent
->header_page_overwrite
,
5871 parse_header_field("data", &pevent
->header_page_data_offset
,
5872 &pevent
->header_page_data_size
, 1);
5877 static int event_matches(struct event_format
*event
,
5878 int id
, const char *sys_name
,
5879 const char *event_name
)
5881 if (id
>= 0 && id
!= event
->id
)
5884 if (event_name
&& (strcmp(event_name
, event
->name
) != 0))
5887 if (sys_name
&& (strcmp(sys_name
, event
->system
) != 0))
5893 static void free_handler(struct event_handler
*handle
)
5895 free((void *)handle
->sys_name
);
5896 free((void *)handle
->event_name
);
5900 static int find_event_handle(struct pevent
*pevent
, struct event_format
*event
)
5902 struct event_handler
*handle
, **next
;
5904 for (next
= &pevent
->handlers
; *next
;
5905 next
= &(*next
)->next
) {
5907 if (event_matches(event
, handle
->id
,
5909 handle
->event_name
))
5916 pr_stat("overriding event (%d) %s:%s with new print handler",
5917 event
->id
, event
->system
, event
->name
);
5919 event
->handler
= handle
->func
;
5920 event
->context
= handle
->context
;
5922 *next
= handle
->next
;
5923 free_handler(handle
);
5929 * __pevent_parse_format - parse the event format
5930 * @buf: the buffer storing the event format string
5931 * @size: the size of @buf
5932 * @sys: the system the event belongs to
5934 * This parses the event format and creates an event structure
5935 * to quickly parse raw data for a given event.
5937 * These files currently come from:
5939 * /sys/kernel/debug/tracing/events/.../.../format
5941 enum pevent_errno
__pevent_parse_format(struct event_format
**eventp
,
5942 struct pevent
*pevent
, const char *buf
,
5943 unsigned long size
, const char *sys
)
5945 struct event_format
*event
;
5948 init_input_buf(buf
, size
);
5950 *eventp
= event
= alloc_event();
5952 return PEVENT_ERRNO__MEM_ALLOC_FAILED
;
5954 event
->name
= event_read_name();
5957 ret
= PEVENT_ERRNO__MEM_ALLOC_FAILED
;
5958 goto event_alloc_failed
;
5961 if (strcmp(sys
, "ftrace") == 0) {
5962 event
->flags
|= EVENT_FL_ISFTRACE
;
5964 if (strcmp(event
->name
, "bprint") == 0)
5965 event
->flags
|= EVENT_FL_ISBPRINT
;
5968 event
->id
= event_read_id();
5969 if (event
->id
< 0) {
5970 ret
= PEVENT_ERRNO__READ_ID_FAILED
;
5972 * This isn't an allocation error actually.
5973 * But as the ID is critical, just bail out.
5975 goto event_alloc_failed
;
5978 event
->system
= strdup(sys
);
5979 if (!event
->system
) {
5980 ret
= PEVENT_ERRNO__MEM_ALLOC_FAILED
;
5981 goto event_alloc_failed
;
5984 /* Add pevent to event so that it can be referenced */
5985 event
->pevent
= pevent
;
5987 ret
= event_read_format(event
);
5989 ret
= PEVENT_ERRNO__READ_FORMAT_FAILED
;
5990 goto event_parse_failed
;
5994 * If the event has an override, don't print warnings if the event
5995 * print format fails to parse.
5997 if (pevent
&& find_event_handle(pevent
, event
))
6000 ret
= event_read_print(event
);
6004 ret
= PEVENT_ERRNO__READ_PRINT_FAILED
;
6005 goto event_parse_failed
;
6008 if (!ret
&& (event
->flags
& EVENT_FL_ISFTRACE
)) {
6009 struct format_field
*field
;
6010 struct print_arg
*arg
, **list
;
6012 /* old ftrace had no args */
6013 list
= &event
->print_fmt
.args
;
6014 for (field
= event
->format
.fields
; field
; field
= field
->next
) {
6017 event
->flags
|= EVENT_FL_FAILED
;
6018 return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED
;
6020 arg
->type
= PRINT_FIELD
;
6021 arg
->field
.name
= strdup(field
->name
);
6022 if (!arg
->field
.name
) {
6023 event
->flags
|= EVENT_FL_FAILED
;
6025 return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED
;
6027 arg
->field
.field
= field
;
6037 event
->flags
|= EVENT_FL_FAILED
;
6041 free(event
->system
);
6048 static enum pevent_errno
6049 __pevent_parse_event(struct pevent
*pevent
,
6050 struct event_format
**eventp
,
6051 const char *buf
, unsigned long size
,
6054 int ret
= __pevent_parse_format(eventp
, pevent
, buf
, size
, sys
);
6055 struct event_format
*event
= *eventp
;
6060 if (pevent
&& add_event(pevent
, event
)) {
6061 ret
= PEVENT_ERRNO__MEM_ALLOC_FAILED
;
6062 goto event_add_failed
;
6065 #define PRINT_ARGS 0
6066 if (PRINT_ARGS
&& event
->print_fmt
.args
)
6067 print_args(event
->print_fmt
.args
);
6072 pevent_free_format(event
);
6077 * pevent_parse_format - parse the event format
6078 * @pevent: the handle to the pevent
6079 * @eventp: returned format
6080 * @buf: the buffer storing the event format string
6081 * @size: the size of @buf
6082 * @sys: the system the event belongs to
6084 * This parses the event format and creates an event structure
6085 * to quickly parse raw data for a given event.
6087 * These files currently come from:
6089 * /sys/kernel/debug/tracing/events/.../.../format
6091 enum pevent_errno
pevent_parse_format(struct pevent
*pevent
,
6092 struct event_format
**eventp
,
6094 unsigned long size
, const char *sys
)
6096 return __pevent_parse_event(pevent
, eventp
, buf
, size
, sys
);
6100 * pevent_parse_event - parse the event format
6101 * @pevent: the handle to the pevent
6102 * @buf: the buffer storing the event format string
6103 * @size: the size of @buf
6104 * @sys: the system the event belongs to
6106 * This parses the event format and creates an event structure
6107 * to quickly parse raw data for a given event.
6109 * These files currently come from:
6111 * /sys/kernel/debug/tracing/events/.../.../format
6113 enum pevent_errno
pevent_parse_event(struct pevent
*pevent
, const char *buf
,
6114 unsigned long size
, const char *sys
)
6116 struct event_format
*event
= NULL
;
6117 return __pevent_parse_event(pevent
, &event
, buf
, size
, sys
);
6121 #define _PE(code, str) str
6122 static const char * const pevent_error_str
[] = {
6127 int pevent_strerror(struct pevent
*pevent __maybe_unused
,
6128 enum pevent_errno errnum
, char *buf
, size_t buflen
)
6134 msg
= strerror_r(errnum
, buf
, buflen
);
6136 size_t len
= strlen(msg
);
6137 memcpy(buf
, msg
, min(buflen
- 1, len
));
6138 *(buf
+ min(buflen
- 1, len
)) = '\0';
6143 if (errnum
<= __PEVENT_ERRNO__START
||
6144 errnum
>= __PEVENT_ERRNO__END
)
6147 idx
= errnum
- __PEVENT_ERRNO__START
- 1;
6148 msg
= pevent_error_str
[idx
];
6149 snprintf(buf
, buflen
, "%s", msg
);
6154 int get_field_val(struct trace_seq
*s
, struct format_field
*field
,
6155 const char *name
, struct pevent_record
*record
,
6156 unsigned long long *val
, int err
)
6160 trace_seq_printf(s
, "<CANT FIND FIELD %s>", name
);
6164 if (pevent_read_number_field(field
, record
->data
, val
)) {
6166 trace_seq_printf(s
, " %s=INVALID", name
);
6174 * pevent_get_field_raw - return the raw pointer into the data field
6175 * @s: The seq to print to on error
6176 * @event: the event that the field is for
6177 * @name: The name of the field
6178 * @record: The record with the field name.
6179 * @len: place to store the field length.
6180 * @err: print default error if failed.
6182 * Returns a pointer into record->data of the field and places
6183 * the length of the field in @len.
6185 * On failure, it returns NULL.
6187 void *pevent_get_field_raw(struct trace_seq
*s
, struct event_format
*event
,
6188 const char *name
, struct pevent_record
*record
,
6191 struct format_field
*field
;
6192 void *data
= record
->data
;
6199 field
= pevent_find_field(event
, name
);
6203 trace_seq_printf(s
, "<CANT FIND FIELD %s>", name
);
6207 /* Allow @len to be NULL */
6211 offset
= field
->offset
;
6212 if (field
->flags
& FIELD_IS_DYNAMIC
) {
6213 offset
= pevent_read_number(event
->pevent
,
6214 data
+ offset
, field
->size
);
6215 *len
= offset
>> 16;
6220 return data
+ offset
;
6224 * pevent_get_field_val - find a field and return its value
6225 * @s: The seq to print to on error
6226 * @event: the event that the field is for
6227 * @name: The name of the field
6228 * @record: The record with the field name.
6229 * @val: place to store the value of the field.
6230 * @err: print default error if failed.
6232 * Returns 0 on success -1 on field not found.
6234 int pevent_get_field_val(struct trace_seq
*s
, struct event_format
*event
,
6235 const char *name
, struct pevent_record
*record
,
6236 unsigned long long *val
, int err
)
6238 struct format_field
*field
;
6243 field
= pevent_find_field(event
, name
);
6245 return get_field_val(s
, field
, name
, record
, val
, err
);
6249 * pevent_get_common_field_val - find a common field and return its value
6250 * @s: The seq to print to on error
6251 * @event: the event that the field is for
6252 * @name: The name of the field
6253 * @record: The record with the field name.
6254 * @val: place to store the value of the field.
6255 * @err: print default error if failed.
6257 * Returns 0 on success -1 on field not found.
6259 int pevent_get_common_field_val(struct trace_seq
*s
, struct event_format
*event
,
6260 const char *name
, struct pevent_record
*record
,
6261 unsigned long long *val
, int err
)
6263 struct format_field
*field
;
6268 field
= pevent_find_common_field(event
, name
);
6270 return get_field_val(s
, field
, name
, record
, val
, err
);
6274 * pevent_get_any_field_val - find a any field and return its value
6275 * @s: The seq to print to on error
6276 * @event: the event that the field is for
6277 * @name: The name of the field
6278 * @record: The record with the field name.
6279 * @val: place to store the value of the field.
6280 * @err: print default error if failed.
6282 * Returns 0 on success -1 on field not found.
6284 int pevent_get_any_field_val(struct trace_seq
*s
, struct event_format
*event
,
6285 const char *name
, struct pevent_record
*record
,
6286 unsigned long long *val
, int err
)
6288 struct format_field
*field
;
6293 field
= pevent_find_any_field(event
, name
);
6295 return get_field_val(s
, field
, name
, record
, val
, err
);
6299 * pevent_print_num_field - print a field and a format
6300 * @s: The seq to print to
6301 * @fmt: The printf format to print the field with.
6302 * @event: the event that the field is for
6303 * @name: The name of the field
6304 * @record: The record with the field name.
6305 * @err: print default error if failed.
6307 * Returns: 0 on success, -1 field not found, or 1 if buffer is full.
6309 int pevent_print_num_field(struct trace_seq
*s
, const char *fmt
,
6310 struct event_format
*event
, const char *name
,
6311 struct pevent_record
*record
, int err
)
6313 struct format_field
*field
= pevent_find_field(event
, name
);
6314 unsigned long long val
;
6319 if (pevent_read_number_field(field
, record
->data
, &val
))
6322 return trace_seq_printf(s
, fmt
, val
);
6326 trace_seq_printf(s
, "CAN'T FIND FIELD \"%s\"", name
);
6331 * pevent_print_func_field - print a field and a format for function pointers
6332 * @s: The seq to print to
6333 * @fmt: The printf format to print the field with.
6334 * @event: the event that the field is for
6335 * @name: The name of the field
6336 * @record: The record with the field name.
6337 * @err: print default error if failed.
6339 * Returns: 0 on success, -1 field not found, or 1 if buffer is full.
6341 int pevent_print_func_field(struct trace_seq
*s
, const char *fmt
,
6342 struct event_format
*event
, const char *name
,
6343 struct pevent_record
*record
, int err
)
6345 struct format_field
*field
= pevent_find_field(event
, name
);
6346 struct pevent
*pevent
= event
->pevent
;
6347 unsigned long long val
;
6348 struct func_map
*func
;
6354 if (pevent_read_number_field(field
, record
->data
, &val
))
6357 func
= find_func(pevent
, val
);
6360 snprintf(tmp
, 128, "%s/0x%llx", func
->func
, func
->addr
- val
);
6362 sprintf(tmp
, "0x%08llx", val
);
6364 return trace_seq_printf(s
, fmt
, tmp
);
6368 trace_seq_printf(s
, "CAN'T FIND FIELD \"%s\"", name
);
6372 static void free_func_handle(struct pevent_function_handler
*func
)
6374 struct pevent_func_params
*params
;
6378 while (func
->params
) {
6379 params
= func
->params
;
6380 func
->params
= params
->next
;
6388 * pevent_register_print_function - register a helper function
6389 * @pevent: the handle to the pevent
6390 * @func: the function to process the helper function
6391 * @ret_type: the return type of the helper function
6392 * @name: the name of the helper function
6393 * @parameters: A list of enum pevent_func_arg_type
6395 * Some events may have helper functions in the print format arguments.
6396 * This allows a plugin to dynamically create a way to process one
6397 * of these functions.
6399 * The @parameters is a variable list of pevent_func_arg_type enums that
6400 * must end with PEVENT_FUNC_ARG_VOID.
6402 int pevent_register_print_function(struct pevent
*pevent
,
6403 pevent_func_handler func
,
6404 enum pevent_func_arg_type ret_type
,
6407 struct pevent_function_handler
*func_handle
;
6408 struct pevent_func_params
**next_param
;
6409 struct pevent_func_params
*param
;
6410 enum pevent_func_arg_type type
;
6414 func_handle
= find_func_handler(pevent
, name
);
6417 * This is most like caused by the users own
6418 * plugins updating the function. This overrides the
6421 pr_stat("override of function helper '%s'", name
);
6422 remove_func_handler(pevent
, name
);
6425 func_handle
= calloc(1, sizeof(*func_handle
));
6427 do_warning("Failed to allocate function handler");
6428 return PEVENT_ERRNO__MEM_ALLOC_FAILED
;
6431 func_handle
->ret_type
= ret_type
;
6432 func_handle
->name
= strdup(name
);
6433 func_handle
->func
= func
;
6434 if (!func_handle
->name
) {
6435 do_warning("Failed to allocate function name");
6437 return PEVENT_ERRNO__MEM_ALLOC_FAILED
;
6440 next_param
= &(func_handle
->params
);
6443 type
= va_arg(ap
, enum pevent_func_arg_type
);
6444 if (type
== PEVENT_FUNC_ARG_VOID
)
6447 if (type
>= PEVENT_FUNC_ARG_MAX_TYPES
) {
6448 do_warning("Invalid argument type %d", type
);
6449 ret
= PEVENT_ERRNO__INVALID_ARG_TYPE
;
6453 param
= malloc(sizeof(*param
));
6455 do_warning("Failed to allocate function param");
6456 ret
= PEVENT_ERRNO__MEM_ALLOC_FAILED
;
6462 *next_param
= param
;
6463 next_param
= &(param
->next
);
6465 func_handle
->nr_args
++;
6469 func_handle
->next
= pevent
->func_handlers
;
6470 pevent
->func_handlers
= func_handle
;
6475 free_func_handle(func_handle
);
6480 * pevent_unregister_print_function - unregister a helper function
6481 * @pevent: the handle to the pevent
6482 * @func: the function to process the helper function
6483 * @name: the name of the helper function
6485 * This function removes existing print handler for function @name.
6487 * Returns 0 if the handler was removed successully, -1 otherwise.
6489 int pevent_unregister_print_function(struct pevent
*pevent
,
6490 pevent_func_handler func
, char *name
)
6492 struct pevent_function_handler
*func_handle
;
6494 func_handle
= find_func_handler(pevent
, name
);
6495 if (func_handle
&& func_handle
->func
== func
) {
6496 remove_func_handler(pevent
, name
);
6502 static struct event_format
*pevent_search_event(struct pevent
*pevent
, int id
,
6503 const char *sys_name
,
6504 const char *event_name
)
6506 struct event_format
*event
;
6510 event
= pevent_find_event(pevent
, id
);
6513 if (event_name
&& (strcmp(event_name
, event
->name
) != 0))
6515 if (sys_name
&& (strcmp(sys_name
, event
->system
) != 0))
6518 event
= pevent_find_event_by_name(pevent
, sys_name
, event_name
);
6526 * pevent_register_event_handler - register a way to parse an event
6527 * @pevent: the handle to the pevent
6528 * @id: the id of the event to register
6529 * @sys_name: the system name the event belongs to
6530 * @event_name: the name of the event
6531 * @func: the function to call to parse the event information
6532 * @context: the data to be passed to @func
6534 * This function allows a developer to override the parsing of
6535 * a given event. If for some reason the default print format
6536 * is not sufficient, this function will register a function
6537 * for an event to be used to parse the data instead.
6539 * If @id is >= 0, then it is used to find the event.
6540 * else @sys_name and @event_name are used.
6542 int pevent_register_event_handler(struct pevent
*pevent
, int id
,
6543 const char *sys_name
, const char *event_name
,
6544 pevent_event_handler_func func
, void *context
)
6546 struct event_format
*event
;
6547 struct event_handler
*handle
;
6549 event
= pevent_search_event(pevent
, id
, sys_name
, event_name
);
6553 pr_stat("overriding event (%d) %s:%s with new print handler",
6554 event
->id
, event
->system
, event
->name
);
6556 event
->handler
= func
;
6557 event
->context
= context
;
6561 /* Save for later use. */
6562 handle
= calloc(1, sizeof(*handle
));
6564 do_warning("Failed to allocate event handler");
6565 return PEVENT_ERRNO__MEM_ALLOC_FAILED
;
6570 handle
->event_name
= strdup(event_name
);
6572 handle
->sys_name
= strdup(sys_name
);
6574 if ((event_name
&& !handle
->event_name
) ||
6575 (sys_name
&& !handle
->sys_name
)) {
6576 do_warning("Failed to allocate event/sys name");
6577 free((void *)handle
->event_name
);
6578 free((void *)handle
->sys_name
);
6580 return PEVENT_ERRNO__MEM_ALLOC_FAILED
;
6583 handle
->func
= func
;
6584 handle
->next
= pevent
->handlers
;
6585 pevent
->handlers
= handle
;
6586 handle
->context
= context
;
6591 static int handle_matches(struct event_handler
*handler
, int id
,
6592 const char *sys_name
, const char *event_name
,
6593 pevent_event_handler_func func
, void *context
)
6595 if (id
>= 0 && id
!= handler
->id
)
6598 if (event_name
&& (strcmp(event_name
, handler
->event_name
) != 0))
6601 if (sys_name
&& (strcmp(sys_name
, handler
->sys_name
) != 0))
6604 if (func
!= handler
->func
|| context
!= handler
->context
)
6611 * pevent_unregister_event_handler - unregister an existing event handler
6612 * @pevent: the handle to the pevent
6613 * @id: the id of the event to unregister
6614 * @sys_name: the system name the handler belongs to
6615 * @event_name: the name of the event handler
6616 * @func: the function to call to parse the event information
6617 * @context: the data to be passed to @func
6619 * This function removes existing event handler (parser).
6621 * If @id is >= 0, then it is used to find the event.
6622 * else @sys_name and @event_name are used.
6624 * Returns 0 if handler was removed successfully, -1 if event was not found.
6626 int pevent_unregister_event_handler(struct pevent
*pevent
, int id
,
6627 const char *sys_name
, const char *event_name
,
6628 pevent_event_handler_func func
, void *context
)
6630 struct event_format
*event
;
6631 struct event_handler
*handle
;
6632 struct event_handler
**next
;
6634 event
= pevent_search_event(pevent
, id
, sys_name
, event_name
);
6638 if (event
->handler
== func
&& event
->context
== context
) {
6639 pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.",
6640 event
->id
, event
->system
, event
->name
);
6642 event
->handler
= NULL
;
6643 event
->context
= NULL
;
6648 for (next
= &pevent
->handlers
; *next
; next
= &(*next
)->next
) {
6650 if (handle_matches(handle
, id
, sys_name
, event_name
,
6658 *next
= handle
->next
;
6659 free_handler(handle
);
6665 * pevent_alloc - create a pevent handle
6667 struct pevent
*pevent_alloc(void)
6669 struct pevent
*pevent
= calloc(1, sizeof(*pevent
));
6672 pevent
->ref_count
= 1;
6677 void pevent_ref(struct pevent
*pevent
)
6679 pevent
->ref_count
++;
6682 void pevent_free_format_field(struct format_field
*field
)
6685 if (field
->alias
!= field
->name
)
6691 static void free_format_fields(struct format_field
*field
)
6693 struct format_field
*next
;
6697 pevent_free_format_field(field
);
6702 static void free_formats(struct format
*format
)
6704 free_format_fields(format
->common_fields
);
6705 free_format_fields(format
->fields
);
6708 void pevent_free_format(struct event_format
*event
)
6711 free(event
->system
);
6713 free_formats(&event
->format
);
6715 free(event
->print_fmt
.format
);
6716 free_args(event
->print_fmt
.args
);
6722 * pevent_free - free a pevent handle
6723 * @pevent: the pevent handle to free
6725 void pevent_free(struct pevent
*pevent
)
6727 struct cmdline_list
*cmdlist
, *cmdnext
;
6728 struct func_list
*funclist
, *funcnext
;
6729 struct printk_list
*printklist
, *printknext
;
6730 struct pevent_function_handler
*func_handler
;
6731 struct event_handler
*handle
;
6737 cmdlist
= pevent
->cmdlist
;
6738 funclist
= pevent
->funclist
;
6739 printklist
= pevent
->printklist
;
6741 pevent
->ref_count
--;
6742 if (pevent
->ref_count
)
6745 if (pevent
->cmdlines
) {
6746 for (i
= 0; i
< pevent
->cmdline_count
; i
++)
6747 free(pevent
->cmdlines
[i
].comm
);
6748 free(pevent
->cmdlines
);
6752 cmdnext
= cmdlist
->next
;
6753 free(cmdlist
->comm
);
6758 if (pevent
->func_map
) {
6759 for (i
= 0; i
< (int)pevent
->func_count
; i
++) {
6760 free(pevent
->func_map
[i
].func
);
6761 free(pevent
->func_map
[i
].mod
);
6763 free(pevent
->func_map
);
6767 funcnext
= funclist
->next
;
6768 free(funclist
->func
);
6769 free(funclist
->mod
);
6771 funclist
= funcnext
;
6774 while (pevent
->func_handlers
) {
6775 func_handler
= pevent
->func_handlers
;
6776 pevent
->func_handlers
= func_handler
->next
;
6777 free_func_handle(func_handler
);
6780 if (pevent
->printk_map
) {
6781 for (i
= 0; i
< (int)pevent
->printk_count
; i
++)
6782 free(pevent
->printk_map
[i
].printk
);
6783 free(pevent
->printk_map
);
6786 while (printklist
) {
6787 printknext
= printklist
->next
;
6788 free(printklist
->printk
);
6790 printklist
= printknext
;
6793 for (i
= 0; i
< pevent
->nr_events
; i
++)
6794 pevent_free_format(pevent
->events
[i
]);
6796 while (pevent
->handlers
) {
6797 handle
= pevent
->handlers
;
6798 pevent
->handlers
= handle
->next
;
6799 free_handler(handle
);
6802 free(pevent
->trace_clock
);
6803 free(pevent
->events
);
6804 free(pevent
->sort_events
);
6805 free(pevent
->func_resolver
);
6810 void pevent_unref(struct pevent
*pevent
)
6812 pevent_free(pevent
);