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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* FS-Cache tracepoints
3 *
4 * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7#undef TRACE_SYSTEM
8#define TRACE_SYSTEM fscache
9
10#if !defined(_TRACE_FSCACHE_H) || defined(TRACE_HEADER_MULTI_READ)
11#define _TRACE_FSCACHE_H
12
13#include <linux/fscache.h>
14#include <linux/tracepoint.h>
15
16/*
17 * Define enums for tracing information.
18 */
19#ifndef __FSCACHE_DECLARE_TRACE_ENUMS_ONCE_ONLY
20#define __FSCACHE_DECLARE_TRACE_ENUMS_ONCE_ONLY
21
22enum fscache_cookie_trace {
23 fscache_cookie_collision,
24 fscache_cookie_discard,
25 fscache_cookie_get_acquire_parent,
26 fscache_cookie_get_attach_object,
27 fscache_cookie_get_reacquire,
28 fscache_cookie_get_register_netfs,
29 fscache_cookie_put_acquire_nobufs,
30 fscache_cookie_put_dup_netfs,
31 fscache_cookie_put_relinquish,
32 fscache_cookie_put_object,
33 fscache_cookie_put_parent,
34};
35
36enum fscache_page_trace {
37 fscache_page_cached,
38 fscache_page_inval,
39 fscache_page_maybe_release,
40 fscache_page_radix_clear_store,
41 fscache_page_radix_delete,
42 fscache_page_radix_insert,
43 fscache_page_radix_pend2store,
44 fscache_page_radix_set_pend,
45 fscache_page_uncache,
46 fscache_page_write,
47 fscache_page_write_end,
48 fscache_page_write_end_pend,
49 fscache_page_write_end_noc,
50 fscache_page_write_wait,
51 fscache_page_trace__nr
52};
53
54enum fscache_op_trace {
55 fscache_op_cancel,
56 fscache_op_cancel_all,
57 fscache_op_cancelled,
58 fscache_op_completed,
59 fscache_op_enqueue_async,
60 fscache_op_enqueue_mythread,
61 fscache_op_gc,
62 fscache_op_init,
63 fscache_op_put,
64 fscache_op_run,
65 fscache_op_signal,
66 fscache_op_submit,
67 fscache_op_submit_ex,
68 fscache_op_work,
69 fscache_op_trace__nr
70};
71
72enum fscache_page_op_trace {
73 fscache_page_op_alloc_one,
74 fscache_page_op_attr_changed,
75 fscache_page_op_check_consistency,
76 fscache_page_op_invalidate,
77 fscache_page_op_retr_multi,
78 fscache_page_op_retr_one,
79 fscache_page_op_write_one,
80 fscache_page_op_trace__nr
81};
82
83#endif
84
85/*
86 * Declare tracing information enums and their string mappings for display.
87 */
88#define fscache_cookie_traces \
89 EM(fscache_cookie_collision, "*COLLISION*") \
90 EM(fscache_cookie_discard, "DISCARD") \
91 EM(fscache_cookie_get_acquire_parent, "GET prn") \
92 EM(fscache_cookie_get_attach_object, "GET obj") \
93 EM(fscache_cookie_get_reacquire, "GET raq") \
94 EM(fscache_cookie_get_register_netfs, "GET net") \
95 EM(fscache_cookie_put_acquire_nobufs, "PUT nbf") \
96 EM(fscache_cookie_put_dup_netfs, "PUT dnt") \
97 EM(fscache_cookie_put_relinquish, "PUT rlq") \
98 EM(fscache_cookie_put_object, "PUT obj") \
99 E_(fscache_cookie_put_parent, "PUT prn")
100
101#define fscache_page_traces \
102 EM(fscache_page_cached, "Cached ") \
103 EM(fscache_page_inval, "InvalPg") \
104 EM(fscache_page_maybe_release, "MayRels") \
105 EM(fscache_page_uncache, "Uncache") \
106 EM(fscache_page_radix_clear_store, "RxCStr ") \
107 EM(fscache_page_radix_delete, "RxDel ") \
108 EM(fscache_page_radix_insert, "RxIns ") \
109 EM(fscache_page_radix_pend2store, "RxP2S ") \
110 EM(fscache_page_radix_set_pend, "RxSPend ") \
111 EM(fscache_page_write, "WritePg") \
112 EM(fscache_page_write_end, "EndPgWr") \
113 EM(fscache_page_write_end_pend, "EndPgWP") \
114 EM(fscache_page_write_end_noc, "EndPgNC") \
115 E_(fscache_page_write_wait, "WtOnWrt")
116
117#define fscache_op_traces \
118 EM(fscache_op_cancel, "Cancel1") \
119 EM(fscache_op_cancel_all, "CancelA") \
120 EM(fscache_op_cancelled, "Canclld") \
121 EM(fscache_op_completed, "Complet") \
122 EM(fscache_op_enqueue_async, "EnqAsyn") \
123 EM(fscache_op_enqueue_mythread, "EnqMyTh") \
124 EM(fscache_op_gc, "GC ") \
125 EM(fscache_op_init, "Init ") \
126 EM(fscache_op_put, "Put ") \
127 EM(fscache_op_run, "Run ") \
128 EM(fscache_op_signal, "Signal ") \
129 EM(fscache_op_submit, "Submit ") \
130 EM(fscache_op_submit_ex, "SubmitX") \
131 E_(fscache_op_work, "Work ")
132
133#define fscache_page_op_traces \
134 EM(fscache_page_op_alloc_one, "Alloc1 ") \
135 EM(fscache_page_op_attr_changed, "AttrChg") \
136 EM(fscache_page_op_check_consistency, "CheckCn") \
137 EM(fscache_page_op_invalidate, "Inval ") \
138 EM(fscache_page_op_retr_multi, "RetrMul") \
139 EM(fscache_page_op_retr_one, "Retr1 ") \
140 E_(fscache_page_op_write_one, "Write1 ")
141
142/*
143 * Export enum symbols via userspace.
144 */
145#undef EM
146#undef E_
147#define EM(a, b) TRACE_DEFINE_ENUM(a);
148#define E_(a, b) TRACE_DEFINE_ENUM(a);
149
150fscache_cookie_traces;
151
152/*
153 * Now redefine the EM() and E_() macros to map the enums to the strings that
154 * will be printed in the output.
155 */
156#undef EM
157#undef E_
158#define EM(a, b) { a, b },
159#define E_(a, b) { a, b }
160
161
162TRACE_EVENT(fscache_cookie,
163 TP_PROTO(struct fscache_cookie *cookie,
164 enum fscache_cookie_trace where,
165 int usage),
166
167 TP_ARGS(cookie, where, usage),
168
169 TP_STRUCT__entry(
170 __field(struct fscache_cookie *, cookie )
171 __field(struct fscache_cookie *, parent )
172 __field(enum fscache_cookie_trace, where )
173 __field(int, usage )
174 __field(int, n_children )
175 __field(int, n_active )
176 __field(u8, flags )
177 ),
178
179 TP_fast_assign(
180 __entry->cookie = cookie;
181 __entry->parent = cookie->parent;
182 __entry->where = where;
183 __entry->usage = usage;
184 __entry->n_children = atomic_read(&cookie->n_children);
185 __entry->n_active = atomic_read(&cookie->n_active);
186 __entry->flags = cookie->flags;
187 ),
188
189 TP_printk("%s c=%p u=%d p=%p Nc=%d Na=%d f=%02x",
190 __print_symbolic(__entry->where, fscache_cookie_traces),
191 __entry->cookie, __entry->usage,
192 __entry->parent, __entry->n_children, __entry->n_active,
193 __entry->flags)
194 );
195
196TRACE_EVENT(fscache_netfs,
197 TP_PROTO(struct fscache_netfs *netfs),
198
199 TP_ARGS(netfs),
200
201 TP_STRUCT__entry(
202 __field(struct fscache_cookie *, cookie )
203 __array(char, name, 8 )
204 ),
205
206 TP_fast_assign(
207 __entry->cookie = netfs->primary_index;
208 strncpy(__entry->name, netfs->name, 8);
209 __entry->name[7] = 0;
210 ),
211
212 TP_printk("c=%p n=%s",
213 __entry->cookie, __entry->name)
214 );
215
216TRACE_EVENT(fscache_acquire,
217 TP_PROTO(struct fscache_cookie *cookie),
218
219 TP_ARGS(cookie),
220
221 TP_STRUCT__entry(
222 __field(struct fscache_cookie *, cookie )
223 __field(struct fscache_cookie *, parent )
224 __array(char, name, 8 )
225 __field(int, p_usage )
226 __field(int, p_n_children )
227 __field(u8, p_flags )
228 ),
229
230 TP_fast_assign(
231 __entry->cookie = cookie;
232 __entry->parent = cookie->parent;
233 __entry->p_usage = atomic_read(&cookie->parent->usage);
234 __entry->p_n_children = atomic_read(&cookie->parent->n_children);
235 __entry->p_flags = cookie->parent->flags;
236 memcpy(__entry->name, cookie->def->name, 8);
237 __entry->name[7] = 0;
238 ),
239
240 TP_printk("c=%p p=%p pu=%d pc=%d pf=%02x n=%s",
241 __entry->cookie, __entry->parent, __entry->p_usage,
242 __entry->p_n_children, __entry->p_flags, __entry->name)
243 );
244
245TRACE_EVENT(fscache_relinquish,
246 TP_PROTO(struct fscache_cookie *cookie, bool retire),
247
248 TP_ARGS(cookie, retire),
249
250 TP_STRUCT__entry(
251 __field(struct fscache_cookie *, cookie )
252 __field(struct fscache_cookie *, parent )
253 __field(int, usage )
254 __field(int, n_children )
255 __field(int, n_active )
256 __field(u8, flags )
257 __field(bool, retire )
258 ),
259
260 TP_fast_assign(
261 __entry->cookie = cookie;
262 __entry->parent = cookie->parent;
263 __entry->usage = atomic_read(&cookie->usage);
264 __entry->n_children = atomic_read(&cookie->n_children);
265 __entry->n_active = atomic_read(&cookie->n_active);
266 __entry->flags = cookie->flags;
267 __entry->retire = retire;
268 ),
269
270 TP_printk("c=%p u=%d p=%p Nc=%d Na=%d f=%02x r=%u",
271 __entry->cookie, __entry->usage,
272 __entry->parent, __entry->n_children, __entry->n_active,
273 __entry->flags, __entry->retire)
274 );
275
276TRACE_EVENT(fscache_enable,
277 TP_PROTO(struct fscache_cookie *cookie),
278
279 TP_ARGS(cookie),
280
281 TP_STRUCT__entry(
282 __field(struct fscache_cookie *, cookie )
283 __field(int, usage )
284 __field(int, n_children )
285 __field(int, n_active )
286 __field(u8, flags )
287 ),
288
289 TP_fast_assign(
290 __entry->cookie = cookie;
291 __entry->usage = atomic_read(&cookie->usage);
292 __entry->n_children = atomic_read(&cookie->n_children);
293 __entry->n_active = atomic_read(&cookie->n_active);
294 __entry->flags = cookie->flags;
295 ),
296
297 TP_printk("c=%p u=%d Nc=%d Na=%d f=%02x",
298 __entry->cookie, __entry->usage,
299 __entry->n_children, __entry->n_active, __entry->flags)
300 );
301
302TRACE_EVENT(fscache_disable,
303 TP_PROTO(struct fscache_cookie *cookie),
304
305 TP_ARGS(cookie),
306
307 TP_STRUCT__entry(
308 __field(struct fscache_cookie *, cookie )
309 __field(int, usage )
310 __field(int, n_children )
311 __field(int, n_active )
312 __field(u8, flags )
313 ),
314
315 TP_fast_assign(
316 __entry->cookie = cookie;
317 __entry->usage = atomic_read(&cookie->usage);
318 __entry->n_children = atomic_read(&cookie->n_children);
319 __entry->n_active = atomic_read(&cookie->n_active);
320 __entry->flags = cookie->flags;
321 ),
322
323 TP_printk("c=%p u=%d Nc=%d Na=%d f=%02x",
324 __entry->cookie, __entry->usage,
325 __entry->n_children, __entry->n_active, __entry->flags)
326 );
327
328TRACE_EVENT(fscache_osm,
329 TP_PROTO(struct fscache_object *object,
330 const struct fscache_state *state,
331 bool wait, bool oob, s8 event_num),
332
333 TP_ARGS(object, state, wait, oob, event_num),
334
335 TP_STRUCT__entry(
336 __field(struct fscache_cookie *, cookie )
337 __field(struct fscache_object *, object )
338 __array(char, state, 8 )
339 __field(bool, wait )
340 __field(bool, oob )
341 __field(s8, event_num )
342 ),
343
344 TP_fast_assign(
345 __entry->cookie = object->cookie;
346 __entry->object = object;
347 __entry->wait = wait;
348 __entry->oob = oob;
349 __entry->event_num = event_num;
350 memcpy(__entry->state, state->short_name, 8);
351 ),
352
353 TP_printk("c=%p o=%p %s %s%sev=%d",
354 __entry->cookie,
355 __entry->object,
356 __entry->state,
357 __print_symbolic(__entry->wait,
358 { true, "WAIT" },
359 { false, "WORK" }),
360 __print_symbolic(__entry->oob,
361 { true, " OOB " },
362 { false, " " }),
363 __entry->event_num)
364 );
365
366TRACE_EVENT(fscache_page,
367 TP_PROTO(struct fscache_cookie *cookie, struct page *page,
368 enum fscache_page_trace why),
369
370 TP_ARGS(cookie, page, why),
371
372 TP_STRUCT__entry(
373 __field(struct fscache_cookie *, cookie )
374 __field(pgoff_t, page )
375 __field(enum fscache_page_trace, why )
376 ),
377
378 TP_fast_assign(
379 __entry->cookie = cookie;
380 __entry->page = page->index;
381 __entry->why = why;
382 ),
383
384 TP_printk("c=%p %s pg=%lx",
385 __entry->cookie,
386 __print_symbolic(__entry->why, fscache_page_traces),
387 __entry->page)
388 );
389
390TRACE_EVENT(fscache_check_page,
391 TP_PROTO(struct fscache_cookie *cookie, struct page *page,
392 void *val, int n),
393
394 TP_ARGS(cookie, page, val, n),
395
396 TP_STRUCT__entry(
397 __field(struct fscache_cookie *, cookie )
398 __field(void *, page )
399 __field(void *, val )
400 __field(int, n )
401 ),
402
403 TP_fast_assign(
404 __entry->cookie = cookie;
405 __entry->page = page;
406 __entry->val = val;
407 __entry->n = n;
408 ),
409
410 TP_printk("c=%p pg=%p val=%p n=%d",
411 __entry->cookie, __entry->page, __entry->val, __entry->n)
412 );
413
414TRACE_EVENT(fscache_wake_cookie,
415 TP_PROTO(struct fscache_cookie *cookie),
416
417 TP_ARGS(cookie),
418
419 TP_STRUCT__entry(
420 __field(struct fscache_cookie *, cookie )
421 ),
422
423 TP_fast_assign(
424 __entry->cookie = cookie;
425 ),
426
427 TP_printk("c=%p", __entry->cookie)
428 );
429
430TRACE_EVENT(fscache_op,
431 TP_PROTO(struct fscache_cookie *cookie, struct fscache_operation *op,
432 enum fscache_op_trace why),
433
434 TP_ARGS(cookie, op, why),
435
436 TP_STRUCT__entry(
437 __field(struct fscache_cookie *, cookie )
438 __field(struct fscache_operation *, op )
439 __field(enum fscache_op_trace, why )
440 ),
441
442 TP_fast_assign(
443 __entry->cookie = cookie;
444 __entry->op = op;
445 __entry->why = why;
446 ),
447
448 TP_printk("c=%p op=%p %s",
449 __entry->cookie, __entry->op,
450 __print_symbolic(__entry->why, fscache_op_traces))
451 );
452
453TRACE_EVENT(fscache_page_op,
454 TP_PROTO(struct fscache_cookie *cookie, struct page *page,
455 struct fscache_operation *op, enum fscache_page_op_trace what),
456
457 TP_ARGS(cookie, page, op, what),
458
459 TP_STRUCT__entry(
460 __field(struct fscache_cookie *, cookie )
461 __field(pgoff_t, page )
462 __field(struct fscache_operation *, op )
463 __field(enum fscache_page_op_trace, what )
464 ),
465
466 TP_fast_assign(
467 __entry->cookie = cookie;
468 __entry->page = page ? page->index : 0;
469 __entry->op = op;
470 __entry->what = what;
471 ),
472
473 TP_printk("c=%p %s pg=%lx op=%p",
474 __entry->cookie,
475 __print_symbolic(__entry->what, fscache_page_op_traces),
476 __entry->page, __entry->op)
477 );
478
479TRACE_EVENT(fscache_wrote_page,
480 TP_PROTO(struct fscache_cookie *cookie, struct page *page,
481 struct fscache_operation *op, int ret),
482
483 TP_ARGS(cookie, page, op, ret),
484
485 TP_STRUCT__entry(
486 __field(struct fscache_cookie *, cookie )
487 __field(pgoff_t, page )
488 __field(struct fscache_operation *, op )
489 __field(int, ret )
490 ),
491
492 TP_fast_assign(
493 __entry->cookie = cookie;
494 __entry->page = page->index;
495 __entry->op = op;
496 __entry->ret = ret;
497 ),
498
499 TP_printk("c=%p pg=%lx op=%p ret=%d",
500 __entry->cookie, __entry->page, __entry->op, __entry->ret)
501 );
502
503TRACE_EVENT(fscache_gang_lookup,
504 TP_PROTO(struct fscache_cookie *cookie, struct fscache_operation *op,
505 void **results, int n, pgoff_t store_limit),
506
507 TP_ARGS(cookie, op, results, n, store_limit),
508
509 TP_STRUCT__entry(
510 __field(struct fscache_cookie *, cookie )
511 __field(struct fscache_operation *, op )
512 __field(pgoff_t, results0 )
513 __field(int, n )
514 __field(pgoff_t, store_limit )
515 ),
516
517 TP_fast_assign(
518 __entry->cookie = cookie;
519 __entry->op = op;
520 __entry->results0 = results[0] ? ((struct page *)results[0])->index : (pgoff_t)-1;
521 __entry->n = n;
522 __entry->store_limit = store_limit;
523 ),
524
525 TP_printk("c=%p op=%p r0=%lx n=%d sl=%lx",
526 __entry->cookie, __entry->op, __entry->results0, __entry->n,
527 __entry->store_limit)
528 );
529
530#endif /* _TRACE_FSCACHE_H */
531
532/* This part must be outside protection */
533#include <trace/define_trace.h>