Version 20 (modified by mitty, 12 years ago) (diff) |
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tools
- 4.3.5. Tracking Most Frequently Used System Calls
- Kernel/CrashdumpRecipe - Ubuntu Wiki
LKCD is a project that tries to enable enterprise style post-mortem crash analysis in Linux operating systems. It uses a special mode of kexec which allows to automatically boot a secondary kernel whenever a crash (Oops/panic) occurs. This secondary kernel will then save the state and memory of the primary kernel to a certain location of the filesystem (/var/crash on newer releases). This file can then be used by crash to gather detailed information about the problem.
how to build
- https://help.ubuntu.com/community/Kernel/Compile
- This page does NOT describe how to build upstream kernels from kernel.org. This is how to rebuild the actual Ubuntu kernel starting from source.
- VMware上のUbuntuで最新カーネルをビルドする - よそ行き顔で
- パッケージの導入
- build-essential(これがなくては/usr/includeすらない)
- kernel-package
- libncurses5-dev(make menuconfigを行うために必要。本来kernel-packageに入っていると良いような気がする)
- subversion, subversion-tools(TOMOYOのレポジトリの参照用)
- quilt(もともとはAndrew Mortonが作成したパッチ管理用ツール。自分で使うことはないだろうけれども一応。依存関係でgawkとdiffstatが導入された)
もし、rootでコンパイルしたくなければfakerootもあると良い。
- パッケージの導入
- Ubuntuのカーネル再構築 - adsaria mood
- Linuxカーネルの再構築方法@Debian Squeeze - m-birdとFreeBSDの同棲日記
- カーネルソースを展開して、「make help」でmakeオプションが表示される
(example) build 3.6.1 on Ubuntu 12.04 and install to 12.10
- ソースの入手
- mitty@precise:~$ wget http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.6.1.tar.xz
- mitty@precise:~$ tar xJf linux-3.6.1.tar.xz
- ビルド環境構築
- mitty@precise:~$ sudo aptitude build-dep linux
- mitty@precise:~/linux-3.6.1$ scp mitty@quantal64:/boot/config-3.5.0-17-generic .config
- ビルド
- mitty@precise:~/linux-3.6.1$ make oldconfig
- mitty@precise:~/linux-3.6.1$ make -j9
- mitty@precise:~/linux-3.6.1$ make -j9 deb-pkg
- debパッケージのインストール
- mitty@precise:~$ scp linux-image-3.6.1_3.6.1-3_amd64.deb mitty@quantal64:~
- mitty@quantal64:~$ sudo dpkg -i linux-image-3.6.1_3.6.1-3_amd64.deb
how to enhancement kernel
- Adding A System Call To Linux (Fedora 9) - Cory’s Place Fedora 9 kernel 2.6.26 (i686)
- ようこそ - LinuxKernelHackJapan 本サイトは、Linuxカーネル内部情報(総3,911ページ)の提供を目的としている。
- Linux ドライバ作成 初心者編
- http://f42.aaa.livedoor.jp/~hassaku/crswikicrs/
- LinuxDeviceDriver
- カーネルモジュール作成メモ
- Linux システム・コールを使用したカーネル・コマンド
- c - Overriding functionality with modules in Linux kernel - Stack Overflow
the kernel has an interface called kprobes to do just what you needed.
- http://stackoverflow.com/questions/463332/is-it-possible-to-add-a-system-call-via-a-lkm linux - Is it possible to add a system call via a LKM? - Stack Overflow
debugging Linux Kernel with VMware Workstation
- http://wiki.osdev.org/VMWare
- Guest debugging
- These options are valid in Workstation 6.0+, and should be set in the virtual machine's .vmx file.
debugStub.listen.guest32 = "TRUE" debugStub.listen.guest64 = "TRUE"
- If using these options, Workstation prints a message "VMware Workstation is listening for debug connection on port 8832." into the vmware.log file. Start a GDB session (using a copy of your kernel that includes debug information), then:
target remote localhost:8832
- Standard gdb commands work in this mode (e.g. printing memory, backtrace). Note that this is a debug stub attached to the KERNEL, not a userspace program.
- Other useful options:
debugStub.listen.guest32.remote = "TRUE" # Allows debugging from a different computer / VM instead of localhost. # The IP for remote debugging will be that of the host. debugStub.listen.guest64.remote = "TRUE" # Same, but for 64-bit code monitor.debugOnStartGuest32 = "TRUE" # Breaks into debug stub on first instruction (warning: in BIOS!) # This will halt the VM at the very first instruction at 0xFFFF0, you could set the next breakpoint to break *0x7c00 to break when the bootloader is loaded by the BIOS debugStub.hideBreakpoints = "TRUE" # Allows gdb breakpoints to work bios.bootDelay = "3000" # Delay booting the BIOS code.
- These options are valid in Workstation 6.0+, and should be set in the virtual machine's .vmx file.
- Guest debugging
- windellはVistaとのデュアルブートなため、UTCではなくlocal timeでRTCが設定されている
- Ubuntu インストール時に、UTCにすると時計が9時間進む
x86
- http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-i386/current/images/netboot/mini.iso
- Create a new VM
- Ubuntu (not x64)
- ubuntu-lucid
- 1/1 cpu/core
- 512MB
- NAT
- Buslogic
x64
- viola0[1-6]でビルドする場合、そのままではx86_64のカーネルが作られるので注意
- http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/mini.iso
- Create a new VM
- Ubuntu 64-bit
- ubuntu-lucid64
- 1/1 cpu/core
- 512MB
- NAT
- LSI Logic
- BusLogicはx64ゲストでは使用出来ないとのこと