summaryrefslogtreecommitdiffstats
path: root/src/plugins/perfmon/perfmon.h
blob: ffcf2fd5e46bff15bf6b13d11cfcd3e2a04369a6 (plain)
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
/*
 * 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.
 */

#ifndef __perfmon_perfmon_h
#define __perfmon_perfmon_h

#include <linux/perf_event.h>
#include <vppinfra/clib.h>
#include <vppinfra/format.h>
#include <vppinfra/error.h>
#include <vppinfra/cpu.h>
#include <vlib/vlib.h>

#define PERF_MAX_EVENTS 8 /* 4 fixed and 8 programmable on ICX */

typedef enum
{
  PERFMON_BUNDLE_TYPE_UNKNOWN,
  PERFMON_BUNDLE_TYPE_NODE,
  PERFMON_BUNDLE_TYPE_THREAD,
  PERFMON_BUNDLE_TYPE_SYSTEM,
  PERFMON_BUNDLE_TYPE_MAX,
} perfmon_bundle_type_t;

typedef enum
{
  PERFMON_OFFSET_TYPE_MMAP,
  PERFMON_OFFSET_TYPE_METRICS,
  PERFMON_OFFSET_TYPE_MAX,
} perfmon_offset_type_t;

typedef struct
{
  u32 type_from_instance : 1;
  u32 exclude_kernel : 1;
  union
  {
    u32 type;
    u32 instance_type;
  };
  u64 config;
  char *name;
  char *description;
} perfmon_event_t;

typedef struct
{
  u32 type;
  int cpu;
  pid_t pid;
  char *name;
} perfmon_instance_t;

typedef struct
{
  char *name;
  perfmon_instance_t *instances;
} perfmon_instance_type_t;

struct perfmon_source;
vlib_node_function_t perfmon_dispatch_wrapper_mmap;
vlib_node_function_t perfmon_dispatch_wrapper_metrics;

#define foreach_permon_offset_type                                            \
  _ (PERFMON_OFFSET_TYPE_MMAP, perfmon_dispatch_wrapper_mmap)                 \
  _ (PERFMON_OFFSET_TYPE_METRICS, perfmon_dispatch_wrapper_metrics)

typedef clib_error_t *(perfmon_source_init_fn_t) (vlib_main_t *vm,
						  struct perfmon_source *);
typedef struct perfmon_source
{
  char *name;
  char *description;
  struct perfmon_source *next;
  perfmon_event_t *events;
  u32 n_events;
  perfmon_instance_type_t *instances_by_type;
  format_function_t *format_config;
  perfmon_source_init_fn_t *init_fn;
} perfmon_source_t;

struct perfmon_bundle;

typedef clib_error_t *(perfmon_bundle_init_fn_t) (vlib_main_t *vm,
						  struct perfmon_bundle *);

typedef struct
{
  clib_cpu_supports_func_t cpu_supports;
  perfmon_bundle_type_t bundle_type;
} perfmon_cpu_supports_t;

typedef struct perfmon_bundle
{
  char *name;
  char *description;
  char *source;
  char *footer;
  perfmon_bundle_type_t type;
  perfmon_offset_type_t offset_type;
  u32 events[PERF_MAX_EVENTS];
  u32 n_events;

  u32 metrics[PERF_MAX_EVENTS];
  u32 n_metrics;

  perfmon_cpu_supports_t *cpu_supports;
  u32 n_cpu_supports;

  perfmon_bundle_init_fn_t *init_fn;

  char **column_headers;
  format_function_t *format_fn;

  /* do not set manually */
  perfmon_source_t *src;
  struct perfmon_bundle *next;
} perfmon_bundle_t;

typedef struct
{
  u64 nr;
  u64 time_enabled;
  u64 time_running;
  u64 value[PERF_MAX_EVENTS];
} perfmon_reading_t;

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  u64 n_calls;
  u64 n_packets;
  union
  {
    struct
    {
      u64 value[PERF_MAX_EVENTS];
    } t[2];
    u64 value[PERF_MAX_EVENTS * 2];
  };
} perfmon_node_stats_t;

typedef struct
{
  u8 n_events;
  u16 n_nodes;
  perfmon_node_stats_t *node_stats;
  perfmon_bundle_t *bundle;
  struct perf_event_mmap_page *mmap_pages[PERF_MAX_EVENTS];
} perfmon_thread_runtime_t;

typedef struct
{
  perfmon_thread_runtime_t *thread_runtimes;
  perfmon_bundle_t *bundles;
  uword *bundle_by_name;
  perfmon_source_t *sources;
  uword *source_by_name;
  perfmon_bundle_t *active_bundle;
  int is_running;
  f64 sample_time;
  int *group_fds;
  int *fds_to_close;
  perfmon_instance_type_t *default_instance_type;
  perfmon_instance_type_t *active_instance_type;
} perfmon_main_t;

extern perfmon_main_t perfmon_main;

always_inline uword
perfmon_cpu_supported_bundle_type (perfmon_bundle_t *b)
{
  perfmon_cpu_supports_t *supports = b->cpu_supports;
  uword type = 0;

  /* if nothing specific for this bundle, go with the default */
  if (!supports)
    return b->type;

  /* the last specified type, will always win */
  for (int i = 0; i < b->n_cpu_supports; ++i)
    if (supports[i].cpu_supports ())
      type = supports[i].bundle_type;

  return type;
}

#define PERFMON_REGISTER_SOURCE(x)                                            \
  perfmon_source_t __perfmon_source_##x;                                      \
  static void __clib_constructor __perfmon_source_registration_##x (void)     \
  {                                                                           \
    perfmon_main_t *pm = &perfmon_main;                                       \
    __perfmon_source_##x.next = pm->sources;                                  \
    pm->sources = &__perfmon_source_##x;                                      \
  }                                                                           \
  perfmon_source_t __perfmon_source_##x

#define PERFMON_REGISTER_BUNDLE(x)                                            \
  perfmon_bundle_t __perfmon_bundle_##x;                                      \
  static void __clib_constructor __perfmon_bundle_registration_##x (void)     \
  {                                                                           \
    perfmon_main_t *pm = &perfmon_main;                                       \
    __perfmon_bundle_##x.next = pm->bundles;                                  \
    __perfmon_bundle_##x.type =                                               \
      perfmon_cpu_supported_bundle_type (&__perfmon_bundle_##x);              \
    pm->bundles = &__perfmon_bundle_##x;                                      \
  }                                                                           \
  perfmon_bundle_t __perfmon_bundle_##x

void perfmon_reset (vlib_main_t *vm);
clib_error_t *perfmon_start (vlib_main_t *vm, perfmon_bundle_t *);
clib_error_t *perfmon_stop (vlib_main_t *vm);

#define PERFMON_STRINGS(...)                                                  \
  (char *[]) { __VA_ARGS__, 0 }

#endif