1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/* CacheFiles tracepoints
*
* Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM cachefiles
#if !defined(_TRACE_CACHEFILES_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_CACHEFILES_H
#include <linux/tracepoint.h>
/*
* Define enums for tracing information.
*/
#ifndef __CACHEFILES_DECLARE_TRACE_ENUMS_ONCE_ONLY
#define __CACHEFILES_DECLARE_TRACE_ENUMS_ONCE_ONLY
enum fscache_why_object_killed {
FSCACHE_OBJECT_IS_STALE,
FSCACHE_OBJECT_IS_WEIRD,
FSCACHE_OBJECT_INVALIDATED,
FSCACHE_OBJECT_NO_SPACE,
FSCACHE_OBJECT_WAS_RETIRED,
FSCACHE_OBJECT_WAS_CULLED,
};
enum cachefiles_trunc_trace {
cachefiles_trunc_dio_adjust,
cachefiles_trunc_expand_tmpfile,
cachefiles_trunc_shrink,
};
enum cachefiles_error_trace {
cachefiles_trace_fallocate_error,
cachefiles_trace_getxattr_error,
cachefiles_trace_link_error,
cachefiles_trace_lookup_error,
cachefiles_trace_mkdir_error,
cachefiles_trace_notify_change_error,
cachefiles_trace_open_error,
cachefiles_trace_read_error,
cachefiles_trace_remxattr_error,
cachefiles_trace_rename_error,
cachefiles_trace_seek_error,
cachefiles_trace_setxattr_error,
cachefiles_trace_statfs_error,
cachefiles_trace_tmpfile_error,
cachefiles_trace_trunc_error,
cachefiles_trace_unlink_error,
cachefiles_trace_write_error,
};
#endif
/*
* Define enum -> string mappings for display.
*/
#define cachefiles_obj_kill_traces \
EM(FSCACHE_OBJECT_IS_STALE, "stale") \
EM(FSCACHE_OBJECT_IS_WEIRD, "weird") \
EM(FSCACHE_OBJECT_INVALIDATED, "inval") \
EM(FSCACHE_OBJECT_NO_SPACE, "no_space") \
EM(FSCACHE_OBJECT_WAS_RETIRED, "was_retired") \
E_(FSCACHE_OBJECT_WAS_CULLED, "was_culled")
#define cachefiles_trunc_traces \
EM(cachefiles_trunc_dio_adjust, "DIOADJ") \
EM(cachefiles_trunc_expand_tmpfile, "EXPTMP") \
E_(cachefiles_trunc_shrink, "SHRINK")
#define cachefiles_error_traces \
EM(cachefiles_trace_fallocate_error, "fallocate") \
EM(cachefiles_trace_getxattr_error, "getxattr") \
EM(cachefiles_trace_link_error, "link") \
EM(cachefiles_trace_lookup_error, "lookup") \
EM(cachefiles_trace_mkdir_error, "mkdir") \
EM(cachefiles_trace_notify_change_error, "notify_change") \
EM(cachefiles_trace_open_error, "open") \
EM(cachefiles_trace_read_error, "read") \
EM(cachefiles_trace_remxattr_error, "remxattr") \
EM(cachefiles_trace_rename_error, "rename") \
EM(cachefiles_trace_seek_error, "seek") \
EM(cachefiles_trace_setxattr_error, "setxattr") \
EM(cachefiles_trace_statfs_error, "statfs") \
EM(cachefiles_trace_tmpfile_error, "tmpfile") \
EM(cachefiles_trace_trunc_error, "trunc") \
EM(cachefiles_trace_unlink_error, "unlink") \
E_(cachefiles_trace_write_error, "write")
/*
* Export enum symbols via userspace.
*/
#undef EM
#undef E_
#define EM(a, b) TRACE_DEFINE_ENUM(a);
#define E_(a, b) TRACE_DEFINE_ENUM(a);
cachefiles_obj_kill_traces;
cachefiles_trunc_traces;
cachefiles_error_traces;
/*
* Now redefine the EM() and E_() macros to map the enums to the strings that
* will be printed in the output.
*/
#undef EM
#undef E_
#define EM(a, b) { a, b },
#define E_(a, b) { a, b }
TRACE_EVENT(cachefiles_lookup,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de),
TP_ARGS(obj, de),
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(short, error )
__field(unsigned long, ino )
),
TP_fast_assign(
__entry->obj = obj->debug_id;
__entry->ino = (!IS_ERR(de) && d_backing_inode(de) ?
d_backing_inode(de)->i_ino : 0);
__entry->error = IS_ERR(de) ? PTR_ERR(de) : 0;
),
TP_printk("o=%08x i=%lx e=%d",
__entry->obj, __entry->ino, __entry->error)
);
TRACE_EVENT(cachefiles_tmpfile,
TP_PROTO(struct cachefiles_object *obj, struct inode *backer),
TP_ARGS(obj, backer),
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(unsigned int, backer )
),
TP_fast_assign(
__entry->obj = obj->debug_id;
__entry->backer = backer->i_ino;
),
TP_printk("o=%08x b=%08x",
__entry->obj,
__entry->backer)
);
TRACE_EVENT(cachefiles_link,
TP_PROTO(struct cachefiles_object *obj, struct inode *backer),
TP_ARGS(obj, backer),
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(unsigned int, backer )
),
TP_fast_assign(
__entry->obj = obj->debug_id;
__entry->backer = backer->i_ino;
),
TP_printk("o=%08x b=%08x",
__entry->obj,
__entry->backer)
);
TRACE_EVENT(cachefiles_unlink,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de,
enum fscache_why_object_killed why),
TP_ARGS(obj, de, why),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(struct dentry *, de )
__field(enum fscache_why_object_killed, why )
),
TP_fast_assign(
__entry->obj = obj ? obj->debug_id : UINT_MAX;
__entry->de = de;
__entry->why = why;
),
TP_printk("o=%08x d=%p w=%s",
__entry->obj, __entry->de,
__print_symbolic(__entry->why, cachefiles_obj_kill_traces))
);
TRACE_EVENT(cachefiles_rename,
TP_PROTO(struct cachefiles_object *obj,
struct dentry *de,
struct dentry *to,
enum fscache_why_object_killed why),
TP_ARGS(obj, de, to, why),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(struct dentry *, de )
__field(struct dentry *, to )
__field(enum fscache_why_object_killed, why )
),
TP_fast_assign(
__entry->obj = obj ? obj->debug_id : UINT_MAX;
__entry->de = de;
__entry->to = to;
__entry->why = why;
),
TP_printk("o=%08x d=%p t=%p w=%s",
__entry->obj, __entry->de, __entry->to,
__print_symbolic(__entry->why, cachefiles_obj_kill_traces))
);
TRACE_EVENT(cachefiles_trunc,
TP_PROTO(struct cachefiles_object *obj, struct inode *backer,
loff_t from, loff_t to, enum cachefiles_trunc_trace why),
TP_ARGS(obj, backer, from, to, why),
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(unsigned int, backer )
__field(enum cachefiles_trunc_trace, why )
__field(loff_t, from )
__field(loff_t, to )
),
TP_fast_assign(
__entry->obj = obj->debug_id;
__entry->backer = backer->i_ino;
__entry->from = from;
__entry->to = to;
__entry->why = why;
),
TP_printk("o=%08x b=%08x %s l=%llx->%llx",
__entry->obj,
__entry->backer,
__print_symbolic(__entry->why, cachefiles_trunc_traces),
__entry->from,
__entry->to)
);
TRACE_EVENT(cachefiles_mark_active,
TP_PROTO(struct cachefiles_object *obj,
struct inode *inode),
TP_ARGS(obj, inode),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(ino_t, inode )
),
TP_fast_assign(
__entry->obj = obj ? obj->debug_id : 0;
__entry->inode = inode->i_ino;
),
TP_printk("o=%08x i=%lx",
__entry->obj, __entry->inode)
);
TRACE_EVENT(cachefiles_mark_inactive,
TP_PROTO(struct cachefiles_object *obj,
struct inode *inode),
TP_ARGS(obj, inode),
/* Note that obj may be NULL */
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(ino_t, inode )
),
TP_fast_assign(
__entry->obj = obj ? obj->debug_id : 0;
__entry->inode = inode->i_ino;
),
TP_printk("o=%08x i=%lx",
__entry->obj, __entry->inode)
);
TRACE_EVENT(cachefiles_vfs_error,
TP_PROTO(struct cachefiles_object *obj, struct inode *backer,
int error, enum cachefiles_error_trace where),
TP_ARGS(obj, backer, error, where),
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(unsigned int, backer )
__field(enum cachefiles_error_trace, where )
__field(short, error )
),
TP_fast_assign(
__entry->obj = obj ? obj->debug_id : 0;
__entry->backer = backer->i_ino;
__entry->error = error;
__entry->where = where;
),
TP_printk("o=%08x b=%08x %s e=%d",
__entry->obj,
__entry->backer,
__print_symbolic(__entry->where, cachefiles_error_traces),
__entry->error)
);
TRACE_EVENT(cachefiles_io_error,
TP_PROTO(struct cachefiles_object *obj, struct inode *backer,
int error, enum cachefiles_error_trace where),
TP_ARGS(obj, backer, error, where),
TP_STRUCT__entry(
__field(unsigned int, obj )
__field(unsigned int, backer )
__field(enum cachefiles_error_trace, where )
__field(short, error )
),
TP_fast_assign(
__entry->obj = obj ? obj->debug_id : 0;
__entry->backer = backer->i_ino;
__entry->error = error;
__entry->where = where;
),
TP_printk("o=%08x b=%08x %s e=%d",
__entry->obj,
__entry->backer,
__print_symbolic(__entry->where, cachefiles_error_traces),
__entry->error)
);
#endif /* _TRACE_CACHEFILES_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
|
