linux内核调试

我将linux调试环境整理成了makefile 文件。 在运行该批量命令时，需要先确认该命令是否能运行起来。

makefile 文件

env:
        sudo apt-get install  qemu libncurses5-dev gcc-arm-linux-gnueabi build-essential
tarFile:
        tar -xvf busybox-1.24.0.tar.bz2
        mv busybox-1.24.0 busybox
        tar -xvf linux-4.0.tar.gz
fileSys:
        echo "this can not run , you must do by hands"
        cd busybox
        export ARCH=arm
        export CROSS_COMPILE=arm-linux-gnueabi-
        make menuconfig
        echo "chose   | Busybox Settings | buildOption | [*] Build BusyBox as a static binary (no shared libs)"
        make install
        cd _install
        mkdir etc
        mkdir dev
        mkdir mnt
        mkdir -p etc/init.d/
        cd etc/init.d/
        echo "create file named rcS, write content:"
        cat rcS
        chmod +x rcS
        cat fstab
        cat inittab
        cd _install/dev
        sudo mknod console c 5 1
        sudo mknod null c 1 3
        sudo cp _install ../linux-4.0/ -fr

buildKernel:
        echo "this  cammand not run "
        cd linux-4.0
        export ARCH=arm
        export CROSS_COMPILE=arm-linux-gnueabi-
        make vexpress_defconfig
        make menuconfig
        echo " need  condfig  fileSystem  | memery split"
        make bzImage -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-
        make dtbs
runKernel:
        echo "this cammand not run ,  run by hands "
        cd /home/share/debug_kernel/linux-4.0
        qemu-system-arm -M vexpress-a9  -smp 4 -m 1024M -kernel arch/arm/boot/zImage -dtb arch/arm/boot/dts/vexpress-v2p-ca9.dtb -nographic -append "rdinit=/linuxrc console=ttyAMA0 loglevel=8"
gdbKernel:
        sudo apt-get install gdb-arm-none-eabi
        echo "make menuconfig  buid kernel has include  debug imformation "
        echo "the option has choiced "
        qemu-system-arm -M vexpress-a9  -smp 4 -m 1024M -kernel arch/arm/boot/zImage -dtb arch/arm/boot/dts/vexpress-v2p-ca9.dtb -nographic --append "rdinit=/linuxrc console=ttyAMA0 loglevel=8"  -nographic   -S -s
        echo "open anther terminal"
        cd linux-4.0
        arm-none-eabi-gdb --tui vmlinux
        echo "target remote localhost:1234   b start_kernel  c "
gdbKernelGUi:
        sudo apt-get install  eclipse-cdt
        sudo cp debug_kernel debug_kernel_gui -fr
        eclipse
        echo "config eclipse  option  "
        qemu-system-arm -M vexpress-a9  -smp 4 -m 1024M -kernel arch/arm/boot/zImage -dtb arch/arm/boot/dts/vexpress-v2p-ca9.dtb -nographic --append "rdinit=/linuxrc console=ttyAMA0 loglevel=8"  -nographic   -S -s
        echo "enter gdbui"
        file vmlinux
        b do_fork
switchProcess:
        echo "collect cpu information"
        sudo trace-cmd record -e'sched_wakeup*' -e sched_switch -e 'sched_migrate*'
        echo "记录sched_switch和sched_wakeup两个时间，每1s写入一次数据。"
        sudo trace-cmd record -e sched_switch -e sched_wakeup -s 1000000
        kernelshark  trace.dat
 
    

rcS 文件

mkdir -p /proc
mkdir -p /tmp
mkdir -p /sys
mkdir -p /mnt
/bin/mount -a
mkdir -p /dev/pts
mount -t devpts devpts  /dev/pts
echo /sbin/mdev>/proc/sys/kernel/hotplug
mdev -s

fstab 文件

proc /proc proc defaults 0 0
tmpfs /tmp tmpfs defaults 0 0
sysfs /sys sysfs defaults 0 0
tmpfs /dev tmpfs defaults 0 0
debugfs /sys/kernel/debug debugfs defaults 0 0

inittab文件

::sysinit:/etc/init.d/rcS
::respawn:-/bin/sh
::askfirst:-/bin/sh
::ctrlaltdel:/bin/umount -a -r

总结

这个是以前搭建环境做得笔记

参考

奔跑吧linux内核