syp2023

摘要： System Call Handler and Service Routines in the 80 × 86 architecture a Linux system call can be invoked in two different ways, and both of them jump t 阅读全文

摘要： Process Address Space When a User Mode process asks for dynamic memory, it doesn’t get additional page frames; instead, it gets the right to use a new 阅读全文

摘要： dynamic memory Page Frame Management Page Descriptors used to distinguish the page frames that are used to contain pages that belong to processes from 阅读全文

摘要： I/O Architecture bus the primary communication channels inside the computer.Any computer has a system bus that connects most of the internal hardware 阅读全文

摘要： Scheduling Policy Linux scheduling is based on the time sharing technique: several processes run in “time multiplexing” because the CPU time is divide 阅读全文

摘要： Clock and Timer Circuits Real Time Clock(RTC) All PCs include a clock called Real Time Clock (RTC), which is independent of the CPU and all other chip 阅读全文

摘要： How the kernel Services Requests Kernel Preemption As I understand, Kernel Preemption is the invocation of the schedule() the main characteristic of a 阅读全文

摘要： Process Descriptor How Processes Are Organized the process in state: TASK_RUNNING organized in runqueue list group TASK_STROPPED\EXIT_ZOMBIE\EXIT_DEAD 阅读全文

摘要： 摘抄内容引用自linux kernel document -- code analyse based on linux kernel version v6.7 description pre the initialization and the manage of the struct pid is 阅读全文

摘要： Physical Memory Layout unavailable address for kernel either because they map hardware devices’ I/O shared memory or because the corresponding page fr 阅读全文