stoonestoone-CSDN博客

转载 CPU Performance Statistics

2.1. CPU Performance StatisticsEach system-wideLinux performance tool provides different ways to extract similar statistics. Although no tool displays all the statistics, some of the tools display

2012-11-27 17:35:09 207

转载 GPIO access

#define GPBCOM (*(volatile unsigned long *)0x56000010)#define GPBDAT (*(volatile unsigned long *)0x56000114) #define GPB5_out (1GPBCOM = GPB5_out; //GPB5引脚设为输出GPBDAT &= ~(1

2012-02-20 09:11:12 202

转载 I2C SPI

I2C接口· 只有两条总线线路：一条串行数据线（SDA），一条串行时钟线（SCL）· 每个连接到总线的期间都可以使用软件根据它的唯一的地址来识别。· 传输数据的设备间是简单的主/从关系。· 主机可以用作主机发送器或主机接收器· 它是一个真正的多主机总线，两个或者多个主机同时发起数据传输时，可以通过冲

2012-02-16 14:19:08 373

原创 2012/02/16

虚拟地址到物理地址的转换在ARM CPU中，最多会用到两级页表：以段(Section, 1MB)的方式进行转换时用到一级页表，以Page的方式进行转换时用到两级页表。也分为大页(64KB)、小页(4KB)和极小页(1KB)。条目也称为“描述符”(Descriptor)。有段描述符、大页描述符、小页描述符和极小页描述符 – 它们保存段、大页、小页、极小页的起始物理地址；粗页表描述符、细页表描述符

2012-02-16 14:02:34 186

AGPS_CMCC测试规范

很全的移动关于AGPS的测试规范。包含AGPS终端测试规范V3.1.0，AGPS终端测试记录表，AGPS终端互操作性测试规范V3.1.0，AGPS终端仪表测试需求说明V1.0.0，OMA-ETS-SUPL-V1_0-20070116-C

2012-06-24

Concepts Section 1.5. An Overview of the Unix Filesystem Section 1.6. An Overview of Unix Kernels Chapter 2. Memory Addressing Section 2.1. Memory Addresses Section 2.2. Segmentation in Hardware Section 2.3. Segmentation in Linux Section 2.4. Paging in Hardware Section 2.5. Paging in Linux Chapter 3. Processes Section 3.1. Processes, Lightweight Processes, and Threads Section 3.2. Process Descriptor Section 3.3. Process Switch Section 3.4. Creating Processes Section 3.5. Destroying Processes Chapter 4. Interrupts and Exceptions Section 4.1. The Role of Interrupt Signals Section 4.2. Interrupts and Exceptions Section 4.3. Nested Execution of Exception and Interrupt Handlers Section 4.4. Initializing the Interrupt Descriptor Table Section 4.5. Exception Handling Section 4.6. Interrupt Handling Section 4.7. Softirqs and Tasklets Section 4.8. Work Queues Section 4.9. Returning from Interrupts and Exceptions Chapter 5. Kernel Synchronization Section 5.1. How the Kernel Services Requests Section 5.2. Synchronization Primitives Section 5.3. Synchronizing Accesses to Kernel Data Structures Section 5.4. Examples of Race Condition Prevention Chapter 6. Timing Measurements Section 6.1. Clock and Timer Circuits Section 6.2. The Linux Timekeeping Architecture Section 6.3. Updating the Time and Date Section 6.4. Updating System Statistics Section 6.5. Software Timers and Delay Functions Section 6.6. System Calls Related to Timing Measurements Chapter 7. Process Scheduling Section 7.1. Scheduling Policy Section 7.2. The Scheduling Algorithm Section 7.3. Data Structures Used by the Scheduler Section 7.4. Functions Used by the Scheduler Section 7.5. Runqueue Balancing in Multiprocessor Systems Section 7.6. System Calls Related to Scheduling Chapter 8. Memory Management Section 8.1. Page Frame Management Section 8.2. Memory Area Management Section 8.3. Noncontiguous Memory Area Management Chapter 9. Process Address Space Section 9.1. The Process's Address Space ......

2012-06-22

Android SDK 中文开发文档

step by step 适合初学者什么是Android? 安装 SDK 开发和调试开发应用程序开发工具箱 API DEMO

2012-06-22

空空如也

TA创建的收藏夹 TA关注的收藏夹

TA关注的人

stoonestoone的专栏