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
|
/*
*------------------------------------------------------------------
* cj.c
*
* Copyright (c) 2013 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#include <stdio.h>
#include <vlib/vlib.h>
#include <vlib/unix/cj.h>
cj_main_t cj_main;
void
cj_log (u32 type, void * data0, void * data1)
{
u64 new_tail;
cj_main_t * cjm = &cj_main;
cj_record_t * r;
if (cjm->enable == 0)
return;
new_tail = __sync_add_and_fetch (&cjm->tail, 1);
r = (cj_record_t *) &(cjm->records[new_tail & (cjm->num_records - 1)]);
r->time = vlib_time_now (cjm->vlib_main);
r->cpu = os_get_cpu_number();
r->type = type;
r->data[0] = (u64) data0;
r->data[1] = (u64) data1;
}
void cj_stop(void)
{
cj_main_t * cjm = &cj_main;
cjm->enable = 0;
}
clib_error_t * cj_init (vlib_main_t * vm)
{
cj_main_t * cjm = &cj_main;
cjm->vlib_main = vm;
return 0;
}
VLIB_INIT_FUNCTION (cj_init);
static clib_error_t *
cj_config (vlib_main_t * vm, unformat_input_t * input)
{
cj_main_t * cjm = &cj_main;
int matched = 0;
int enable = 0;
while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "records %d", &cjm->num_records))
matched = 1;
else if (unformat (input, "on"))
enable = 1;
else
return clib_error_return (0, "cj_config: unknown input '%U'",
format_unformat_error, input);
}
if (matched == 0)
return 0;
cjm->num_records = max_pow2 (cjm->num_records);
vec_validate (cjm->records, cjm->num_records-1);
memset (cjm->records, 0xff, cjm->num_records * sizeof (cj_record_t));
cjm->tail = ~0;
cjm->enable = enable;
return 0;
}
VLIB_CONFIG_FUNCTION (cj_config, "cj");
void cj_enable_disable (int is_enable)
{
cj_main_t * cjm = &cj_main;
if (cjm->num_records)
cjm->enable = is_enable;
else
vlib_cli_output (cjm->vlib_main, "CJ not configured...");
}
static inline void cj_dump_one_record (cj_record_t * r)
{
fprintf (stderr, "[%d]: %10.6f T%02d %llx %llx\n",
r->cpu, r->time, r->type, (long long unsigned int) r->data[0],
(long long unsigned int) r->data[1]);
}
static void cj_dump_internal (u8 filter0_enable, u64 filter0,
u8 filter1_enable, u64 filter1)
{
cj_main_t * cjm = &cj_main;
cj_record_t * r;
u32 i, index;
if (cjm->num_records == 0)
{
fprintf (stderr, "CJ not configured...\n");
return;
}
if (cjm->tail == (u64)~0)
{
fprintf (stderr, "No data collected...\n");
return;
}
/* Has the trace wrapped? */
index = (cjm->tail+1) & (cjm->num_records - 1);
r = &(cjm->records[index]);
if (r->cpu != (u32)~0)
{
/* Yes, dump from tail + 1 to the end */
for (i = index; i < cjm->num_records; i++)
{
if (filter0_enable && (r->data[0] != filter0))
goto skip;
if (filter1_enable && (r->data[1] != filter1))
goto skip;
cj_dump_one_record (r);
skip:
r++;
}
}
/* dump from the beginning through the final tail */
r = cjm->records;
for (i = 0; i <= cjm->tail; i++)
{
if (filter0_enable && (r->data[0] != filter0))
goto skip2;
if (filter1_enable && (r->data[1] != filter1))
goto skip2;
cj_dump_one_record (r);
skip2:
r++;
}
}
void cj_dump (void)
{
cj_dump_internal (0, 0, 0, 0);
}
void cj_dump_filter_data0 (u64 filter0)
{
cj_dump_internal (1/* enable f0 */, filter0, 0, 0);
}
void cj_dump_filter_data1 (u64 filter1)
{
cj_dump_internal (0, 0, 1 /* enable f1 */, filter1);
}
void cj_dump_filter_data12 (u64 filter0, u64 filter1)
{
cj_dump_internal (1, filter0, 1, filter1);
}
static clib_error_t *
cj_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
int is_enable = -1;
int is_dump = -1;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
if (unformat (input, "enable") || unformat (input, "on"))
is_enable = 1;
else if (unformat (input, "disable") || unformat (input, "off"))
is_enable = 0;
else if (unformat (input, "dump"))
is_dump = 1;
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
if (is_enable >= 0)
cj_enable_disable (is_enable);
if (is_dump > 0)
cj_dump ();
return 0;
}
VLIB_CLI_COMMAND (cj_command,static) = {
.path = "cj",
.short_help = "cj",
.function = cj_command_fn,
};
|
