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Crash工具笔记 (1)—— “current context”

Posted by nanxiao on 十一月 13, 2015 in Crash工具笔记 |

成功启动crash会话后,会有一个task被指定为current context。因为有一些命令是contex […]

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/dev/mem,/dev/kmem和/dev/port

Posted by nanxiao on 十一月 13, 2015 in 技术 |

/dev/mem,/dev/kmem和/dev/port这三个文件分别代表物理内存,kernel虚拟内存和I/ […]

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SystemTap 笔记 (8)—— typecasting

Posted by nanxiao on 十一月 13, 2015 in SystemTap 笔记 |

当指针是一个void *类型,或是保存为整数后,可以使用cast运算符指定指针的数据类型: @cast(p, […]

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SystemTap 笔记 (7)—— target variable (2)

Posted by nanxiao on 十一月 13, 2015 in SystemTap 笔记 |

SystemTap可以为target variable生成一系列可打印的字符串: $$vars Expands […]

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Linux kernel 笔记 (44)——使用字符设备

Posted by nanxiao on 十一月 13, 2015 in Linux kernel 笔记 |

Linux kernel 使用 cdev结构体代表字符设备(char device),定义在<linux […]

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