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
|
/*
* Copyright (c) 2020 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 <vnet/vnet.h>
#include <vppinfra/linux/sysfs.h>
#include <perfmon/perfmon.h>
#include <perfmon/intel/core.h>
#include <perfmon/intel/uncore.h>
VLIB_REGISTER_LOG_CLASS (if_intel_uncore_log, static) = {
.class_name = "perfmon",
.subclass_name = "intel-uncore",
};
#define log_debug(fmt, ...) \
vlib_log_debug (if_intel_uncore_log.class, fmt, __VA_ARGS__)
#define log_warn(fmt, ...) \
vlib_log_warn (if_intel_uncore_log.class, fmt, __VA_ARGS__)
#define log_err(fmt, ...) \
vlib_log_err (if_intel_uncore_log.class, fmt, __VA_ARGS__)
#define PERF_INTEL_CODE(event, umask, edge, any, inv, cmask) \
((event) | (umask) << 8 | (edge) << 18 | (any) << 21 | (inv) << 23 | \
(cmask) << 24)
static perfmon_event_t intel_uncore_events[] = {
#define _(unit, event, umask, n, suffix, desc) \
[INTEL_UNCORE_E_##unit##_##n##_##suffix] = { \
.config = (event) | (umask) << 8, \
.name = #n "." #suffix, \
.description = desc, \
.type_from_instance = 1, \
.instance_type = INTEL_UNCORE_UNIT_##unit, \
},
foreach_intel_uncore_event
#undef _
};
static int
intel_uncore_instance_name_cmp (void *v1, void *v2)
{
perfmon_instance_t *i1 = v1;
perfmon_instance_t *i2 = v2;
return strcmp (i1->name, i2->name);
}
static void
intel_uncore_add_unit (perfmon_source_t *src, intel_uncore_unit_type_t u,
char *name, char *type_str, char *fmt,
int *socket_by_cpu_id)
{
static char *base_path = "/sys/bus/event_source/devices/uncore";
clib_error_t *err;
clib_bitmap_t *cpumask = 0;
perfmon_instance_t *in;
perfmon_instance_type_t *it;
u8 *s = 0;
int i = 0, j;
u32 perf_type;
vec_validate (src->instances_by_type, u);
it = vec_elt_at_index (src->instances_by_type, u);
it->name = type_str;
while (1)
{
s = format (s, "%s_%s_%u/type%c", base_path, name, i, 0);
if ((err = clib_sysfs_read ((char *) s, "%u", &perf_type)))
break;
vec_reset_length (s);
s = format (s, "%s_%s_%u/cpumask%c", base_path, name, i, 0);
if ((err = clib_sysfs_read ((char *) s, "%U", unformat_bitmap_list,
&cpumask)))
break;
vec_reset_length (s);
clib_bitmap_foreach (j, cpumask)
{
vec_add2 (it->instances, in, 1);
in->type = perf_type;
in->cpu = j;
in->pid = -1;
in->name = (char *) format (0, fmt, socket_by_cpu_id[j], i);
vec_terminate_c_string (in->name);
log_debug ("found %s %s", type_str, in->name);
}
i++;
};
clib_error_free (err);
clib_bitmap_free (cpumask);
vec_free (s);
}
static clib_error_t *
intel_uncore_init (vlib_main_t *vm, perfmon_source_t *src)
{
clib_error_t *err = 0;
clib_bitmap_t *node_bitmap = 0, *cpumask = 0;
int *numa_by_cpu_id = 0;
u32 i, j;
u8 *s = 0;
if ((err = clib_sysfs_read ("/sys/devices/system/node/has_cpu", "%U",
unformat_bitmap_list, &node_bitmap)))
{
clib_error_free (err);
return clib_error_return (0, "failed to discover numa topology");
}
clib_bitmap_foreach (i, node_bitmap)
{
s = format (s, "/sys/devices/system/node/node%u/cpulist%c", i, 0);
if ((err = clib_sysfs_read ((char *) s, "%U", unformat_bitmap_list,
&cpumask)))
{
clib_error_free (err);
err = clib_error_return (0, "failed to discover numa topology");
goto done;
}
clib_bitmap_foreach (j, cpumask)
{
vec_validate_init_empty (numa_by_cpu_id, j, -1);
numa_by_cpu_id[j] = i;
}
clib_bitmap_free (cpumask);
vec_reset_length (s);
}
#define _(t, n, name, fmt) \
intel_uncore_add_unit (src, INTEL_UNCORE_UNIT_##t, n, name, fmt, \
numa_by_cpu_id);
foreach_intel_uncore_unit_type;
#undef _
for (i = 0, j = 0; i < vec_len (src->instances_by_type); i++)
{
perfmon_instance_type_t *it;
it = vec_elt_at_index (src->instances_by_type, i);
vec_sort_with_function (it->instances, intel_uncore_instance_name_cmp);
j += vec_len (it->instances);
}
if (j == 0)
{
vec_free (src->instances_by_type);
return clib_error_return (0, "no uncore units found");
}
done:
vec_free (s);
vec_free (cpumask);
vec_free (node_bitmap);
vec_free (numa_by_cpu_id);
return err;
}
format_function_t format_intel_core_config;
PERFMON_REGISTER_SOURCE (intel_uncore) = {
.name = "intel-uncore",
.description = "intel uncore events",
.events = intel_uncore_events,
.n_events = INTEL_UNCORE_N_EVENTS,
.init_fn = intel_uncore_init,
.format_config = format_intel_core_config,
};
|
