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Add comprehensive Linux kernel learning guide (10 chapters)#1

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Add comprehensive Linux kernel learning guide (10 chapters)#1
Copilot wants to merge 10 commits into
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copilot/learn-linux-classic-version

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Copilot AI commented May 20, 2026 •
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同步 HTML → Markdown，补充 SVG，全面深化内容

  • 创建新 SVG 图表 6 个:
    • ebpf-arch.svg — eBPF 完整架构(Verifier/JIT/Maps/挂载点)
    • irq-flow.svg — 中断处理完整路径(硬件→APIC→IDT→上下半部)
    • boot-flow.svg — 启动全流程(BIOS/UEFI→GRUB→head.S→start_kernel→systemd)
    • sync-map.svg — 同步机制全景(从atomic到futex的选择决策树)
    • driver-model.svg — 设备模型层次(kobject/sysfs/probe生命周期)
    • debug-tools.svg — 调试工具全景(静态检查/动态追踪/性能分析/崩溃分析)
  • 更新现有 README.md (00-09)
    • 所有文件添加对应 SVG 图表引用
    • 每章补充 100-300 行专家级内容(NUMA/OOM/THP/vDSO/seccomp/RCU深入/等)
  • 创建新章节 README.md (10-15)，每章 1000-1500+ 行
    • 10-CFS: vruntime公式/nice权重表/红黑树对比/5调度类/EAS/cgroup
    • 11-容器: 8种NS/veth搭建/cgroups v2/OverlayFS/seccomp/mini-docker
    • 12-eBPF: Verifier/JIT/Map类型/XDP/CO-RE/bpftrace/BCC/生产案例
    • 13-中断: IDT/APIC/softirq/tasklet/workqueue/线程化IRQ/IPI/hrtimer
    • 14-启动: BIOS/UEFI/GRUB/bzImage/head_64.S/start_kernel序列/initramfs/systemd
    • 15-调试: ftrace/perf/FlameGraph/KASAN/KFENCE/lockdep/kdump+crash/livepatch
  • 更新根 README.md 目录指向 Markdown 文件 + 添加 SVG 图表列
  • 修复 code review 反馈 (KASAN互斥说明/危险命令警告/prefers-reduced-motion/99Hz注释/mkdir前置步骤)
Original prompt

我想学习linux相关的知识，但是目前linux系统太庞大了，我想找出一个经典版本，包含现代linux系统的核心框架的版本源码。需要你帮我整理学习路线之类的东西，主要是为了学习。还有机制的讲解，源码对照之类的。我主要是为了学习，需要你给我提供很详细的资料，还有各种图片示意之类的

Copilot AI changed the title [WIP] Add learning resources for classic Linux version Add comprehensive Linux kernel learning guide (10 chapters) May 20, 2026
Copilot finished work on behalf of YYCB May 20, 2026 09:19
Copilot AI requested a review from YYCB May 20, 2026 09:19
Copilot AI and others added 3 commits May 20, 2026 09:36
Copilot finished work on behalf of YYCB May 20, 2026 09:58
Copilot AI and others added 5 commits May 20, 2026 12:02
@YYCB
docs: add expert-level chapters 10/11/12 (CFS/Container/eBPF)
fbcacea 
- 10-CFS调度器: vruntime公式、nice权重表、红黑树分析、pick_next_task_fair()、
  调度类优先级、EDF/SCHED_DEADLINE、负载均衡域、EAS、cgroup v2带宽控制、
  调试工具与常见性能问题 (1154行)

- 11-容器与命名空间: 8种namespace对比表、clone/unshare/setns代码示例、
  PID双重视图、veth pair网络搭建、User namespace UID映射、pivot_root vs chroot、
  cgroups v1/v2对比、OverlayFS copy-up/whiteout、seccomp BPF、capabilities、
  runc流程、mini-docker C实现 (1056行)

- 12-eBPF与可观测性: cBPF→eBPF历史、Verifier安全模型、JIT寄存器映射、
  Map类型表、挂载点全景、完整Hello World程序、XDP防DDoS示例、TCP追踪、
  CO-RE原理、bpftrace实战命令集、BCC工具集、Cilium/Falco/Pixie/Katran、
  限制与调试工作流 (1338行)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: YYCB <23326150+YYCB@users.noreply.github.com>
@YYCB
docs: add chapters 13–15 (中断与异常/启动流程/内核调试与性能)
8941006 
- 13-中断与异常: IDT/APIC/softirq/tasklet/workqueue/threaded IRQ/IPI/
  中断亲和性/hrtimer/延迟测量 (1050 行)
- 14-启动流程深入: BIOS/UEFI/MBR/GRUB2/bzImage解压/head_64.S/
  start_kernel序列/initramfs/systemd/KASLR/kdump (1139 行)
- 15-内核调试与性能: ftrace/perf/FlameGraph/KASAN/KFENCE/KMSAN/
  UBSAN/lockdep/KCOV/kdump+crash/GDB+QEMU/bpftrace/livepatch/
  性能优化清单 (1542 行)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: YYCB <23326150+YYCB@users.noreply.github.com>
@YYCB
docs: fix review comments in ch14 and ch15
b1cd757 
- ch14 KASLR: expand entropy sources to include RDRAND/RDSEED and
  cite arch/x86/boot/compressed/kaslr.c for randomization location
- ch15 KASAN: clarify CONFIG_KASAN_GENERIC and CONFIG_KASAN_HW_TAGS
  are mutually exclusive (software vs hardware implementation)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: YYCB <23326150+YYCB@users.noreply.github.com>
@YYCB
docs: deepen all 9 README files with expert-level content and SVG refs
36aebd1 
- 00-学习路线: add arch-overview.svg ref, 推荐书单与资源 section
  (ULK/LKD/LDD3/Kerrisk books, online resources, video courses),
  20-question expert-level checklist covering all subsystems

- 01-经典版本选择: add arch-overview.svg ref, detailed version comparison
  table (0.11→6.1 LTS) with release year, LoC, and milestone features;
  subsystem evolution timeline (scheduler/mm/IO)

- 02-环境搭建: add KGDB remote debugging (two-machine setup, GDB session
  examples), clangd IDE navigation (compile_commands.json, VS Code/nvim
  config), kernel config tips (defconfig vs tinyconfig, ccache, Kconfig
  debug options), crash tool vmcore analysis workflow

- 03-进程管理: add vm-layout.svg ref, thread_info fields (flags/
  preempt_count/addr_limit), ASCII kernel stack layout diagram,
  do_fork→copy_process→wake_up_new_task 5.x path, __switch_to_asm
  x86_64 assembly, zombie/orphan process lifecycle with wait4() path

- 04-内存管理: add page-table.svg ref, NUMA node/zone/page structure,
  memory zones table (DMA/DMA32/NORMAL/MOVABLE) with ranges, kswapd
  watermark/LRU mechanics, OOM killer scoring algorithm, THP
  (/sys/kernel/mm/transparent_hugepage) and KSM internals

- 05-文件系统: add vfs-objects.svg ref, page cache writeback (dirty_ratio
  params, pdflush), fsync/fdatasync/msync comparison table, io_uring
  SQE/CQE ring buffer with code example, ext4 journal modes
  (journal/ordered/writeback) tradeoff table

- 06-系统调用: add syscall-flow.svg ref, vDSO mechanism (gettimeofday/
  clock_gettime/getcpu acceleration, ~10ns vs ~200ns), seccomp BPF
  filter example with SECCOMP_RET_* codes, step-by-step guide to add
  new syscall in Linux 5.x, 32-bit vs 64-bit syscall number table

- 07-设备驱动: add driver-model.svg ref, MSI/MSI-X vs INTx comparison
  with pci_enable_msix_exact() example, DMA API (dma_alloc_coherent vs
  dma_map_single vs dma_map_sg) with IOMMU explanation, complete devm_*
  function reference list, full platform driver example with DTS binding
  (LED driver with clocks/GPIO/IRQ/devm cleanup)

- 08-网络子系统: add tcp-handshake.svg ref, detailed sk_buff ASCII diagram
  (head/data/tail/end with headroom/tailroom), complete RX path call
  chain (NIC→NAPI→netif_receive_skb→ip_rcv→tcp_v4_rcv), netfilter 5
  hooks table with iptables chain mapping, conntrack states and
  /proc/net/nf_conntrack, XDP return codes with Mpps performance
  numbers and eBPF drop-UDP example, TCP tuning sysctl reference

- 09-同步机制: add sync-map.svg ref, TSO vs weak ordering (ARM) with
  smp_mb/smp_wmb/smp_rmb/smp_load_acquire API, RCU grace period deep
  dive (synchronize_rcu vs call_rcu, list_replace_rcu pattern), RCU
  lock-free list/hashtable examples, futex internals (hash bucket,
  FUTEX_WAIT/WAKE path, pi_futex priority inheritance), per-CPU
  variables (DEFINE_PER_CPU, get_cpu_var, this_cpu_* family)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: YYCB <23326150+YYCB@users.noreply.github.com>
@YYCB
docs: add 5 SVG diagrams, expert README.md for ch10-15, update ch00-0…
c286d4f 
…9 with SVG refs and deeper content

Agent-Logs-Url: https://github.com/YYCB/how_to_learn_linux/sessions/265a578b-5d26-408c-934d-e4176267d506

Co-authored-by: YYCB <23326150+YYCB@users.noreply.github.com>
Copilot finished work on behalf of YYCB May 20, 2026 12:35
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