tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1%pure-parser
2%parse-param {void *_data}
3%parse-param {void *scanner}
4%lex-param {void* scanner}
5
6%{
7
8#define YYDEBUG 1
9
10#include <linux/compiler.h>
11#include <linux/list.h>
12#include <linux/types.h>
13#include "util.h"
14#include "parse-events.h"
15#include "parse-events-bison.h"
16
17extern int parse_events_lex (YYSTYPE* lvalp, void* scanner);
18
19#define ABORT_ON(val) \
20do { \
21 if (val) \
22 YYABORT; \
23} while (0)
24
25#define ALLOC_LIST(list) \
26do { \
27 list = malloc(sizeof(*list)); \
28 ABORT_ON(!list); \
29 INIT_LIST_HEAD(list); \
30} while (0)
31
32static inc_group_count(struct list_head *list,
33 struct parse_events_evlist *data)
34{
35 /* Count groups only have more than 1 members */
36 if (!list_is_last(list->next, list))
37 data->nr_groups++;
38}
39
40%}
41
42%token PE_START_EVENTS PE_START_TERMS
43%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
44%token PE_EVENT_NAME
45%token PE_NAME
46%token PE_MODIFIER_EVENT PE_MODIFIER_BP
47%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
48%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
49%token PE_ERROR
50%token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
51%type <num> PE_VALUE
52%type <num> PE_VALUE_SYM_HW
53%type <num> PE_VALUE_SYM_SW
54%type <num> PE_RAW
55%type <num> PE_TERM
56%type <str> PE_NAME
57%type <str> PE_NAME_CACHE_TYPE
58%type <str> PE_NAME_CACHE_OP_RESULT
59%type <str> PE_MODIFIER_EVENT
60%type <str> PE_MODIFIER_BP
61%type <str> PE_EVENT_NAME
62%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
63%type <num> value_sym
64%type <head> event_config
65%type <term> event_term
66%type <head> event_pmu
67%type <head> event_legacy_symbol
68%type <head> event_legacy_cache
69%type <head> event_legacy_mem
70%type <head> event_legacy_tracepoint
71%type <head> event_legacy_numeric
72%type <head> event_legacy_raw
73%type <head> event_def
74%type <head> event_mod
75%type <head> event_name
76%type <head> event
77%type <head> events
78%type <head> group_def
79%type <head> group
80%type <head> groups
81
82%union
83{
84 char *str;
85 u64 num;
86 struct list_head *head;
87 struct parse_events_term *term;
88}
89%%
90
91start:
92PE_START_EVENTS start_events
93|
94PE_START_TERMS start_terms
95
96start_events: groups
97{
98 struct parse_events_evlist *data = _data;
99
100 parse_events_update_lists($1, &data->list);
101}
102
103groups:
104groups ',' group
105{
106 struct list_head *list = $1;
107 struct list_head *group = $3;
108
109 parse_events_update_lists(group, list);
110 $$ = list;
111}
112|
113groups ',' event
114{
115 struct list_head *list = $1;
116 struct list_head *event = $3;
117
118 parse_events_update_lists(event, list);
119 $$ = list;
120}
121|
122group
123|
124event
125
126group:
127group_def ':' PE_MODIFIER_EVENT
128{
129 struct list_head *list = $1;
130
131 ABORT_ON(parse_events__modifier_group(list, $3));
132 $$ = list;
133}
134|
135group_def
136
137group_def:
138PE_NAME '{' events '}'
139{
140 struct list_head *list = $3;
141
142 inc_group_count(list, _data);
143 parse_events__set_leader($1, list);
144 $$ = list;
145}
146|
147'{' events '}'
148{
149 struct list_head *list = $2;
150
151 inc_group_count(list, _data);
152 parse_events__set_leader(NULL, list);
153 $$ = list;
154}
155
156events:
157events ',' event
158{
159 struct list_head *event = $3;
160 struct list_head *list = $1;
161
162 parse_events_update_lists(event, list);
163 $$ = list;
164}
165|
166event
167
168event: event_mod
169
170event_mod:
171event_name PE_MODIFIER_EVENT
172{
173 struct list_head *list = $1;
174
175 /*
176 * Apply modifier on all events added by single event definition
177 * (there could be more events added for multiple tracepoint
178 * definitions via '*?'.
179 */
180 ABORT_ON(parse_events__modifier_event(list, $2, false));
181 $$ = list;
182}
183|
184event_name
185
186event_name:
187PE_EVENT_NAME event_def
188{
189 ABORT_ON(parse_events_name($2, $1));
190 free($1);
191 $$ = $2;
192}
193|
194event_def
195
196event_def: event_pmu |
197 event_legacy_symbol |
198 event_legacy_cache sep_dc |
199 event_legacy_mem |
200 event_legacy_tracepoint sep_dc |
201 event_legacy_numeric sep_dc |
202 event_legacy_raw sep_dc
203
204event_pmu:
205PE_NAME '/' event_config '/'
206{
207 struct parse_events_evlist *data = _data;
208 struct list_head *list;
209
210 ALLOC_LIST(list);
211 ABORT_ON(parse_events_add_pmu(list, &data->idx, $1, $3));
212 parse_events__free_terms($3);
213 $$ = list;
214}
215|
216PE_NAME '/' '/'
217{
218 struct parse_events_evlist *data = _data;
219 struct list_head *list;
220
221 ALLOC_LIST(list);
222 ABORT_ON(parse_events_add_pmu(list, &data->idx, $1, NULL));
223 $$ = list;
224}
225|
226PE_KERNEL_PMU_EVENT sep_dc
227{
228 struct parse_events_evlist *data = _data;
229 struct list_head *head;
230 struct parse_events_term *term;
231 struct list_head *list;
232
233 ALLOC_LIST(head);
234 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
235 $1, 1));
236 list_add_tail(&term->list, head);
237
238 ALLOC_LIST(list);
239 ABORT_ON(parse_events_add_pmu(list, &data->idx, "cpu", head));
240 parse_events__free_terms(head);
241 $$ = list;
242}
243|
244PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
245{
246 struct parse_events_evlist *data = _data;
247 struct list_head *head;
248 struct parse_events_term *term;
249 struct list_head *list;
250 char pmu_name[128];
251 snprintf(&pmu_name, 128, "%s-%s", $1, $3);
252
253 ALLOC_LIST(head);
254 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
255 &pmu_name, 1));
256 list_add_tail(&term->list, head);
257
258 ALLOC_LIST(list);
259 ABORT_ON(parse_events_add_pmu(list, &data->idx, "cpu", head));
260 parse_events__free_terms(head);
261 $$ = list;
262}
263
264value_sym:
265PE_VALUE_SYM_HW
266|
267PE_VALUE_SYM_SW
268
269event_legacy_symbol:
270value_sym '/' event_config '/'
271{
272 struct parse_events_evlist *data = _data;
273 struct list_head *list;
274 int type = $1 >> 16;
275 int config = $1 & 255;
276
277 ALLOC_LIST(list);
278 ABORT_ON(parse_events_add_numeric(list, &data->idx,
279 type, config, $3));
280 parse_events__free_terms($3);
281 $$ = list;
282}
283|
284value_sym sep_slash_dc
285{
286 struct parse_events_evlist *data = _data;
287 struct list_head *list;
288 int type = $1 >> 16;
289 int config = $1 & 255;
290
291 ALLOC_LIST(list);
292 ABORT_ON(parse_events_add_numeric(list, &data->idx,
293 type, config, NULL));
294 $$ = list;
295}
296
297event_legacy_cache:
298PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT
299{
300 struct parse_events_evlist *data = _data;
301 struct list_head *list;
302
303 ALLOC_LIST(list);
304 ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, $5));
305 $$ = list;
306}
307|
308PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT
309{
310 struct parse_events_evlist *data = _data;
311 struct list_head *list;
312
313 ALLOC_LIST(list);
314 ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, NULL));
315 $$ = list;
316}
317|
318PE_NAME_CACHE_TYPE
319{
320 struct parse_events_evlist *data = _data;
321 struct list_head *list;
322
323 ALLOC_LIST(list);
324 ABORT_ON(parse_events_add_cache(list, &data->idx, $1, NULL, NULL));
325 $$ = list;
326}
327
328event_legacy_mem:
329PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
330{
331 struct parse_events_evlist *data = _data;
332 struct list_head *list;
333
334 ALLOC_LIST(list);
335 ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
336 (void *) $2, $4));
337 $$ = list;
338}
339|
340PE_PREFIX_MEM PE_VALUE sep_dc
341{
342 struct parse_events_evlist *data = _data;
343 struct list_head *list;
344
345 ALLOC_LIST(list);
346 ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
347 (void *) $2, NULL));
348 $$ = list;
349}
350
351event_legacy_tracepoint:
352PE_NAME '-' PE_NAME ':' PE_NAME
353{
354 struct parse_events_evlist *data = _data;
355 struct list_head *list;
356 char sys_name[128];
357 snprintf(&sys_name, 128, "%s-%s", $1, $3);
358
359 ALLOC_LIST(list);
360 ABORT_ON(parse_events_add_tracepoint(list, &data->idx, &sys_name, $5));
361 $$ = list;
362}
363|
364PE_NAME ':' PE_NAME
365{
366 struct parse_events_evlist *data = _data;
367 struct list_head *list;
368
369 ALLOC_LIST(list);
370 ABORT_ON(parse_events_add_tracepoint(list, &data->idx, $1, $3));
371 $$ = list;
372}
373
374event_legacy_numeric:
375PE_VALUE ':' PE_VALUE
376{
377 struct parse_events_evlist *data = _data;
378 struct list_head *list;
379
380 ALLOC_LIST(list);
381 ABORT_ON(parse_events_add_numeric(list, &data->idx, (u32)$1, $3, NULL));
382 $$ = list;
383}
384
385event_legacy_raw:
386PE_RAW
387{
388 struct parse_events_evlist *data = _data;
389 struct list_head *list;
390
391 ALLOC_LIST(list);
392 ABORT_ON(parse_events_add_numeric(list, &data->idx,
393 PERF_TYPE_RAW, $1, NULL));
394 $$ = list;
395}
396
397start_terms: event_config
398{
399 struct parse_events_terms *data = _data;
400 data->terms = $1;
401}
402
403event_config:
404event_config ',' event_term
405{
406 struct list_head *head = $1;
407 struct parse_events_term *term = $3;
408
409 ABORT_ON(!head);
410 list_add_tail(&term->list, head);
411 $$ = $1;
412}
413|
414event_term
415{
416 struct list_head *head = malloc(sizeof(*head));
417 struct parse_events_term *term = $1;
418
419 ABORT_ON(!head);
420 INIT_LIST_HEAD(head);
421 list_add_tail(&term->list, head);
422 $$ = head;
423}
424
425event_term:
426PE_NAME '=' PE_NAME
427{
428 struct parse_events_term *term;
429
430 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
431 $1, $3));
432 $$ = term;
433}
434|
435PE_NAME '=' PE_VALUE
436{
437 struct parse_events_term *term;
438
439 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
440 $1, $3));
441 $$ = term;
442}
443|
444PE_NAME '=' PE_VALUE_SYM_HW
445{
446 struct parse_events_term *term;
447 int config = $3 & 255;
448
449 ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
450 $$ = term;
451}
452|
453PE_NAME
454{
455 struct parse_events_term *term;
456
457 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
458 $1, 1));
459 $$ = term;
460}
461|
462PE_VALUE_SYM_HW
463{
464 struct parse_events_term *term;
465 int config = $1 & 255;
466
467 ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
468 $$ = term;
469}
470|
471PE_TERM '=' PE_NAME
472{
473 struct parse_events_term *term;
474
475 ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3));
476 $$ = term;
477}
478|
479PE_TERM '=' PE_VALUE
480{
481 struct parse_events_term *term;
482
483 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3));
484 $$ = term;
485}
486|
487PE_TERM
488{
489 struct parse_events_term *term;
490
491 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1));
492 $$ = term;
493}
494
495sep_dc: ':' |
496
497sep_slash_dc: '/' | ':' |
498
499%%
500
501void parse_events_error(void *data __maybe_unused, void *scanner __maybe_unused,
502 char const *msg __maybe_unused)
503{
504}