blob: 1065b6e2249db0e0a79b87237dd5236f709dfe5d (
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
|
/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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 <inttypes.h>
#include <sys/types.h>
#define BPF_FS_PATH "/sys/fs/bpf/"
// Number of frequencies tracked in the array with total time. If some CPUs have
// more than 64 freqs
// // available, the overflow is stored in the last entry.
#define MAX_FREQS_FOR_TOTAL 64
// Number of frequencies for which a UID's times can be tracked in a single map entry. If some CPUs
// have more than 32 freqs available, a single UID is tracked using 2 or more entries.
#define FREQS_PER_ENTRY 32
// Number of distinct CPU counts for which a UID's concurrent time stats can be tracked in a single
// map entry. On systems with more than 8 CPUs, a single UID is tracked using 2 or more entries.
#define CPUS_PER_ENTRY 8
typedef struct {
uint32_t uid;
uint32_t bucket;
} time_key_t;
typedef struct {
uint64_t ar[FREQS_PER_ENTRY];
} tis_val_t;
typedef struct {
uint64_t active[CPUS_PER_ENTRY];
uint64_t policy[CPUS_PER_ENTRY];
} concurrent_val_t;
typedef struct {
uint32_t policy;
uint32_t freq;
} freq_idx_key_t;
// Maximum number of processes whose thread CPU time-in-state can be tracked simultaneously.
#define MAX_TRACKED_PIDS 8
// Indicates that the pid_tracked_map item is unused and further items in the array are also
// unused
#define TRACKED_PID_STATE_UNUSED 0
// Indicates that the pid_tracked_map item contains a PID that is currently tracked
#define TRACKED_PID_STATE_ACTIVE 1
// Indicates that the pid_tracked_map item is vacant, but further items in the array may
// contain tracked PIDs
#define TRACKED_PID_STATE_EXITED 2
typedef struct {
pid_t pid;
// TRACKED_PID_STATE_UNUSED, TRACKED_PID_STATE_ACTIVE or TRACKED_PID_STATE_EXITED
uint8_t state;
} tracked_pid_t;
typedef struct {
pid_t tgid;
uint16_t aggregation_key;
uint16_t bucket;
} aggregated_task_tis_key_t;
|
