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
|
/*
* Copyright (C) 2015 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 "event_type.h"
#include <unistd.h>
#include <algorithm>
#include <string>
#include <vector>
#include <android-base/file.h>
#include <android-base/logging.h>
#include "event_attr.h"
#include "utils.h"
#define EVENT_TYPE_TABLE_ENTRY(name, type, config) {name, type, config},
static const std::vector<EventType> static_event_type_array = {
#include "event_type_table.h"
};
static const std::vector<EventType> GetTracepointEventTypes() {
std::vector<EventType> result;
const std::string tracepoint_dirname = "/sys/kernel/debug/tracing/events";
std::vector<std::string> system_dirs;
GetEntriesInDir(tracepoint_dirname, nullptr, &system_dirs);
for (auto& system_name : system_dirs) {
std::string system_path = tracepoint_dirname + "/" + system_name;
std::vector<std::string> event_dirs;
GetEntriesInDir(system_path, nullptr, &event_dirs);
for (auto& event_name : event_dirs) {
std::string id_path = system_path + "/" + event_name + "/id";
std::string id_content;
if (!android::base::ReadFileToString(id_path, &id_content)) {
continue;
}
char* endptr;
uint64_t id = strtoull(id_content.c_str(), &endptr, 10);
if (endptr == id_content.c_str()) {
LOG(DEBUG) << "unexpected id '" << id_content << "' in " << id_path;
continue;
}
result.push_back(EventType(system_name + ":" + event_name, PERF_TYPE_TRACEPOINT, id));
}
}
std::sort(result.begin(), result.end(),
[](const EventType& type1, const EventType& type2) { return type1.name < type2.name; });
return result;
}
const std::vector<EventType>& GetAllEventTypes() {
static std::vector<EventType> event_type_array;
if (event_type_array.empty()) {
event_type_array.insert(event_type_array.end(), static_event_type_array.begin(),
static_event_type_array.end());
const std::vector<EventType> tracepoint_array = GetTracepointEventTypes();
event_type_array.insert(event_type_array.end(), tracepoint_array.begin(),
tracepoint_array.end());
}
return event_type_array;
}
const EventType* FindEventTypeByConfig(uint32_t type, uint64_t config) {
for (auto& event_type : GetAllEventTypes()) {
if (event_type.type == type && event_type.config == config) {
return &event_type;
}
}
return nullptr;
}
const EventType* FindEventTypeByName(const std::string& name) {
const EventType* result = nullptr;
for (auto& event_type : GetAllEventTypes()) {
if (event_type.name == name) {
result = &event_type;
break;
}
}
if (result == nullptr) {
LOG(ERROR) << "Unknown event_type '" << name
<< "', try `simpleperf list` to list all possible event type names";
return nullptr;
}
return result;
}
std::unique_ptr<EventTypeAndModifier> ParseEventType(const std::string& event_type_str) {
static std::string modifier_characters = "ukhGHp";
std::unique_ptr<EventTypeAndModifier> event_type_modifier(new EventTypeAndModifier);
event_type_modifier->name = event_type_str;
std::string event_type_name = event_type_str;
std::string modifier;
size_t comm_pos = event_type_str.rfind(':');
if (comm_pos != std::string::npos) {
bool match_modifier = true;
for (size_t i = comm_pos + 1; i < event_type_str.size(); ++i) {
char c = event_type_str[i];
if (c != ' ' && modifier_characters.find(c) == std::string::npos) {
match_modifier = false;
break;
}
}
if (match_modifier) {
event_type_name = event_type_str.substr(0, comm_pos);
modifier = event_type_str.substr(comm_pos + 1);
}
}
const EventType* event_type = FindEventTypeByName(event_type_name);
if (event_type == nullptr) {
// Try if the modifier belongs to the event type name, like some tracepoint events.
if (!modifier.empty()) {
event_type_name = event_type_str;
modifier.clear();
event_type = FindEventTypeByName(event_type_name);
}
if (event_type == nullptr) {
return nullptr;
}
}
event_type_modifier->event_type = *event_type;
if (modifier.find_first_of("ukh") != std::string::npos) {
event_type_modifier->exclude_user = true;
event_type_modifier->exclude_kernel = true;
event_type_modifier->exclude_hv = true;
}
if (modifier.find_first_of("GH") != std::string::npos) {
event_type_modifier->exclude_guest = true;
event_type_modifier->exclude_host = true;
}
for (auto& c : modifier) {
switch (c) {
case 'u':
event_type_modifier->exclude_user = false;
break;
case 'k':
event_type_modifier->exclude_kernel = false;
break;
case 'h':
event_type_modifier->exclude_hv = false;
break;
case 'G':
event_type_modifier->exclude_guest = false;
break;
case 'H':
event_type_modifier->exclude_host = false;
break;
case 'p':
event_type_modifier->precise_ip++;
break;
case ' ':
break;
default:
LOG(ERROR) << "Unknown event type modifier '" << c << "'";
}
}
event_type_modifier->modifier = modifier;
return event_type_modifier;
}
|
