Android系统proc下查看cpuinfo的参数信息
一、命令 adb shell cat /proc/cpuinfo
我的脚本 Cpuinfo.bat，目的手机系统读取/proc/cpuinfo 文件中 CPU 的类型等多种信息
echo on
adb shell cat /proc/cpuinfo > Cpuinfo.txt导出数据如下
processor : 0
Processor : AArch64 Processor rev 4 (aarch64)
model name : AArch64 Processor rev 4 (aarch64)
BogoMIPS : 26.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
processor : 1
Processor : AArch64 Processor rev 4 (aarch64)
model name : AArch64 Processor rev 4 (aarch64)
BogoMIPS : 26.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
processor : 2
Processor : AArch64 Processor rev 4 (aarch64)
model name : AArch64 Processor rev 4 (aarch64)
BogoMIPS : 26.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
processor : 3
Processor : AArch64 Processor rev 4 (aarch64)
model name : AArch64 Processor rev 4 (aarch64)
BogoMIPS : 26.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
Hardware : MT6739WAprocessor : 0 ~ processor : 3 表示 4 核 CPU
二、参数解释及可以获取的信息
1.参数解释
processor : 0[系统中逻辑处理核的编号。对于单核处理器，则认为是其CPU编号，对于多核处理器则可以是物理核、或者使用超线程技术虚拟的逻辑核]
Processor : AArch64 Processor rev 4 (aarch64)[CPU 架构， 64bit aarch64 表示 kernel]
model name : AArch64 Processor rev 4 (aarch64)[CPU属于的名字及其编号、标称主频]
BogoMIPS : 26.00 [在系统内核启动时粗略测算的CPU速度（Million Instructions Per Second）]
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41 [ARM 架构 cpu.h]
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03 [ARM_CPU_PART_CORTEX_A53 架构 cputype.h]
CPU revision : 4 [4 配置版本或者配置修正]<1 第一批 2 修订版，改进版>
Hardware : MT6739WA[品牌]2.信息获取
- 查看 kernel 的运行位数，是64或者32位数
- 查看 CPU 的核数
- 查看 CPU 的架构和名称
3.相关涉及源码定义
/external/v8/src/base/cpu.h
44 // arm implementer/part information
45 int implementer() const { return implementer_; }
46 static const int ARM = 0x41;
47 static const int NVIDIA = 0x4e;
48 static const int QUALCOMM = 0x51;
/kernel-3.18/arch/arm64/include/asm/cputype.h
8#define ARM_CPU_PART_AEM_V8 0xD0F
69#define ARM_CPU_PART_FOUNDATION 0xD00
70#define ARM_CPU_PART_CORTEX_A57 0xD07
71#define ARM_CPU_PART_CORTEX_A72 0xD08
72#define ARM_CPU_PART_CORTEX_A53 0xD03三、参考源码
1./external/v8/src/base/cpu.h
// Copyright 2006-2013 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// This module contains the architecture-specific code. This make the rest of
6// the code less dependent on differences between different processor
7// architecture.
8// The classes have the same definition for all architectures. The
9// implementation for a particular architecture is put in cpu_.cc.
10// The build system then uses the implementation for the target architecture.
11//
12
13#ifndef V8_BASE_CPU_H_
14#define V8_BASE_CPU_H_
15
16#include "src/base/macros.h"
17
18namespace v8 {
19namespace base {
20
21// ----------------------------------------------------------------------------
22// CPU
23//
24// Query information about the processor.
25//
26// This class also has static methods for the architecture specific functions.
27// Add methods here to cope with differences between the supported
28// architectures. For each architecture the file cpu_.cc contains the
29// implementation of these static functions.
30
31class CPU FINAL {
32 public:
33 CPU();
34
35 // x86 CPUID information
36 const char* vendor() const { return vendor_; }
37 int stepping() const { return stepping_; }
38 int model() const { return model_; }
39 int ext_model() const { return ext_model_; }
40 int family() const { return family_; }
41 int ext_family() const { return ext_family_; }
42 int type() const { return type_; }
43
44 // arm implementer/part information
45 int implementer() const { return implementer_; }
46 static const int ARM = 0x41;
47 static const int NVIDIA = 0x4e;
48 static const int QUALCOMM = 0x51;
49 int architecture() const { return architecture_; }
50 int part() const { return part_; }
51 static const int ARM_CORTEX_A5 = 0xc05;
52 static const int ARM_CORTEX_A7 = 0xc07;
53 static const int ARM_CORTEX_A8 = 0xc08;
54 static const int ARM_CORTEX_A9 = 0xc09;
55 static const int ARM_CORTEX_A12 = 0xc0c;
56 static const int ARM_CORTEX_A15 = 0xc0f;
57
58 // General features
59 bool has_fpu() const { return has_fpu_; }
60
61 // x86 features
62 bool has_cmov() const { return has_cmov_; }
63 bool has_sahf() const { return has_sahf_; }
64 bool has_mmx() const { return has_mmx_; }
65 bool has_sse() const { return has_sse_; }
66 bool has_sse2() const { return has_sse2_; }
67 bool has_sse3() const { return has_sse3_; }
68 bool has_ssse3() const { return has_ssse3_; }
69 bool has_sse41() const { return has_sse41_; }
70 bool has_sse42() const { return has_sse42_; }
71
72 // arm features
73 bool has_idiva() const { return has_idiva_; }
74 bool has_neon() const { return has_neon_; }
75 bool has_thumb2() const { return has_thumb2_; }
76 bool has_vfp() const { return has_vfp_; }
77 bool has_vfp3() const { return has_vfp3_; }
78 bool has_vfp3_d32() const { return has_vfp3_d32_; }
79
80 // mips features
81 bool is_fp64_mode() const { return is_fp64_mode_; }
82
83 private:
84 char vendor_[13];
85 int stepping_;
86 int model_;
87 int ext_model_;
88 int family_;
89 int ext_family_;
90 int type_;
91 int implementer_;
92 int architecture_;
93 int part_;
94 bool has_fpu_;
95 bool has_cmov_;
96 bool has_sahf_;
97 bool has_mmx_;
98 bool has_sse_;
99 bool has_sse2_;
100 bool has_sse3_;
101 bool has_ssse3_;
102 bool has_sse41_;
103 bool has_sse42_;
104 bool has_idiva_;
105 bool has_neon_;
106 bool has_thumb2_;
107 bool has_vfp_;
108 bool has_vfp3_;
109 bool has_vfp3_d32_;
110 bool is_fp64_mode_;
111};
112
113} } // namespace v8::base
114
115#endif // V8_BASE_CPU_H_2./kernel-3.18/arch/arm64/include/asm/cputype.h
1/*
2 * Copyright (C) 2012 ARM Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see