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
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Network filesystem support module tracepoints
*
* Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM netfs
#if !defined(_TRACE_NETFS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_NETFS_H
#include <linux/tracepoint.h>
/*
* Define enums for tracing information.
*/
#ifndef __NETFS_DECLARE_TRACE_ENUMS_ONCE_ONLY
#define __NETFS_DECLARE_TRACE_ENUMS_ONCE_ONLY
enum netfs_read_trace {
netfs_read_trace_expanded,
netfs_read_trace_readahead,
netfs_read_trace_readpage,
netfs_read_trace_write_begin,
};
enum netfs_rreq_trace {
netfs_rreq_trace_assess,
netfs_rreq_trace_done,
netfs_rreq_trace_free,
netfs_rreq_trace_resubmit,
netfs_rreq_trace_unlock,
netfs_rreq_trace_unmark,
netfs_rreq_trace_write,
};
enum netfs_sreq_trace {
netfs_sreq_trace_download_instead,
netfs_sreq_trace_free,
netfs_sreq_trace_prepare,
netfs_sreq_trace_resubmit_short,
netfs_sreq_trace_submit,
netfs_sreq_trace_terminated,
netfs_sreq_trace_write,
netfs_sreq_trace_write_skip,
netfs_sreq_trace_write_term,
};
enum netfs_failure {
netfs_fail_check_write_begin,
netfs_fail_copy_to_cache,
netfs_fail_read,
netfs_fail_short_readpage,
netfs_fail_short_write_begin,
netfs_fail_prepare_write,
};
#endif
#define netfs_read_traces \
EM(netfs_read_trace_expanded, "EXPANDED ") \
EM(netfs_read_trace_readahead, "READAHEAD") \
EM(netfs_read_trace_readpage, "READPAGE ") \
E_(netfs_read_trace_write_begin, "WRITEBEGN")
#define netfs_rreq_traces \
EM(netfs_rreq_trace_assess, "ASSESS") \
EM(netfs_rreq_trace_done, "DONE ") \
EM(netfs_rreq_trace_free, "FREE ") \
EM(netfs_rreq_trace_resubmit, "RESUBM") \
EM(netfs_rreq_trace_unlock, "UNLOCK") \
EM(netfs_rreq_trace_unmark, "UNMARK") \
E_(netfs_rreq_trace_write, "WRITE ")
#define netfs_sreq_sources \
EM(NETFS_FILL_WITH_ZEROES, "ZERO") \
EM(NETFS_DOWNLOAD_FROM_SERVER, "DOWN") \
EM(NETFS_READ_FROM_CACHE, "READ") \
E_(NETFS_INVALID_READ, "INVL") \
#define netfs_sreq_traces \
EM(netfs_sreq_trace_download_instead, "RDOWN") \
EM(netfs_sreq_trace_free, "FREE ") \
EM(netfs_sreq_trace_prepare, "PREP ") \
EM(netfs_sreq_trace_resubmit_short, "SHORT") \
EM(netfs_sreq_trace_submit, "SUBMT") \
EM(netfs_sreq_trace_terminated, "TERM ") \
EM(netfs_sreq_trace_write, "WRITE") \
EM(netfs_sreq_trace_write_skip, "SKIP ") \
E_(netfs_sreq_trace_write_term, "WTERM")
#define netfs_failures \
EM(netfs_fail_check_write_begin, "check-write-begin") \
EM(netfs_fail_copy_to_cache, "copy-to-cache") \
EM(netfs_fail_read, "read") \
EM(netfs_fail_short_readpage, "short-readpage") \
EM(netfs_fail_short_write_begin, "short-write-begin") \
E_(netfs_fail_prepare_write, "prep-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);
netfs_read_traces;
netfs_rreq_traces;
netfs_sreq_sources;
netfs_sreq_traces;
netfs_failures;
/*
* 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(netfs_read,
TP_PROTO(struct netfs_read_request *rreq,
loff_t start, size_t len,
enum netfs_read_trace what),
TP_ARGS(rreq, start, len, what),
TP_STRUCT__entry(
__field(unsigned int, rreq )
__field(unsigned int, cookie )
__field(loff_t, start )
__field(size_t, len )
__field(enum netfs_read_trace, what )
),
TP_fast_assign(
__entry->rreq = rreq->debug_id;
__entry->cookie = rreq->cache_resources.debug_id;
__entry->start = start;
__entry->len = len;
__entry->what = what;
),
TP_printk("R=%08x %s c=%08x s=%llx %zx",
__entry->rreq,
__print_symbolic(__entry->what, netfs_read_traces),
__entry->cookie,
__entry->start, __entry->len)
);
TRACE_EVENT(netfs_rreq,
TP_PROTO(struct netfs_read_request *rreq,
enum netfs_rreq_trace what),
TP_ARGS(rreq, what),
TP_STRUCT__entry(
__field(unsigned int, rreq )
__field(unsigned short, flags )
__field(enum netfs_rreq_trace, what )
),
TP_fast_assign(
__entry->rreq = rreq->debug_id;
__entry->flags = rreq->flags;
__entry->what = what;
),
TP_printk("R=%08x %s f=%02x",
__entry->rreq,
__print_symbolic(__entry->what, netfs_rreq_traces),
__entry->flags)
);
TRACE_EVENT(netfs_sreq,
TP_PROTO(struct netfs_read_subrequest *sreq,
enum netfs_sreq_trace what),
TP_ARGS(sreq, what),
TP_STRUCT__entry(
__field(unsigned int, rreq )
__field(unsigned short, index )
__field(short, error )
__field(unsigned short, flags )
__field(enum netfs_read_source, source )
__field(enum netfs_sreq_trace, what )
__field(size_t, len )
__field(size_t, transferred )
__field(loff_t, start )
),
TP_fast_assign(
__entry->rreq = sreq->rreq->debug_id;
__entry->index = sreq->debug_index;
__entry->error = sreq->error;
__entry->flags = sreq->flags;
__entry->source = sreq->source;
__entry->what = what;
__entry->len = sreq->len;
__entry->transferred = sreq->transferred;
__entry->start = sreq->start;
),
TP_printk("R=%08x[%u] %s %s f=%02x s=%llx %zx/%zx e=%d",
__entry->rreq, __entry->index,
__print_symbolic(__entry->what, netfs_sreq_traces),
__print_symbolic(__entry->source, netfs_sreq_sources),
__entry->flags,
__entry->start, __entry->transferred, __entry->len,
__entry->error)
);
TRACE_EVENT(netfs_failure,
TP_PROTO(struct netfs_read_request *rreq,
struct netfs_read_subrequest *sreq,
int error, enum netfs_failure what),
TP_ARGS(rreq, sreq, error, what),
TP_STRUCT__entry(
__field(unsigned int, rreq )
__field(unsigned short, index )
__field(short, error )
__field(unsigned short, flags )
__field(enum netfs_read_source, source )
__field(enum netfs_failure, what )
__field(size_t, len )
__field(size_t, transferred )
__field(loff_t, start )
),
TP_fast_assign(
__entry->rreq = rreq->debug_id;
__entry->index = sreq ? sreq->debug_index : 0;
__entry->error = error;
__entry->flags = sreq ? sreq->flags : 0;
__entry->source = sreq ? sreq->source : NETFS_INVALID_READ;
__entry->what = what;
__entry->len = sreq ? sreq->len : 0;
__entry->transferred = sreq ? sreq->transferred : 0;
__entry->start = sreq ? sreq->start : 0;
),
TP_printk("R=%08x[%u] %s f=%02x s=%llx %zx/%zx %s e=%d",
__entry->rreq, __entry->index,
__print_symbolic(__entry->source, netfs_sreq_sources),
__entry->flags,
__entry->start, __entry->transferred, __entry->len,
__print_symbolic(__entry->what, netfs_failures),
__entry->error)
);
#endif /* _TRACE_NETFS_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
|
