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为了方便学习,排除编译中间产物.o等的影响,增加.gitignore 的修改等 #20

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为了方便学习,排除编译中间产物.o等的影响,增加.gitignore 的修改等 #20

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fd78c94
add workspace file for vscode,add .gitignore and 'V=1' to display bui…
nsynet Aug 23, 2025
06e80e6
.gitignore 去掉不用的路径，字符设备自动生成文件节点，避免手工 mknod 创建文件节点
nsynet Aug 25, 2025
538ed92
文件节点属性为666；demodrv_write() 不能return 0，否则一直重试，导致写文件不退出；
nsynet Aug 26, 2025
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36 changes: 36 additions & 0 deletions .gitignore
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Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,36 @@
.tmp*
*.map
*.dtb
*.so
*.so.dbg
*.ko
*.mod.c
*.cmd
*.d
*.a
*.order
*.tmp
*.builtin
*.o
scripts/basic/modules.order
scripts/kconfig/zconf.*
.config
vmlinux
*generated*
Module.symvers
.version
arch/arm64/kernel/asm-offsets.s
certs/signing_key.x509
crypto/asymmetric_keys/
crypto/rsaprivkey.asn1.c
crypto/rsaprivkey.asn1.h
crypto/rsapubkey.asn1.c
crypto/rsapubkey.asn1.h
include/config/
kernel/bounds.s
scripts/dtc/dtc-lexer.lex.c
scripts/dtc/dtc-parser.tab.*
scripts/genksyms/lex.lex.c
scripts/genksyms/parse.tab.*
scripts/mod/devicetable-offsets.s
rootfs_debian_*
28 changes: 27 additions & 1 deletion kmodules/rlk_lab/rlk_basic/chapter_6_device_driver/lab1_simple_driver/simple_char.c
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,9 @@
static dev_t dev;
static struct cdev *demo_cdev;
static signed count = 1;
static struct class *demo_class = NULL;
static int demo_major;


static int demodrv_open(struct inode *inode, struct file *file)
{
Expand Down Expand Up @@ -35,7 +38,7 @@ static ssize_t
demodrv_write(struct file *file, const char __user *buf, size_t count, loff_t *f_pos)
{
printk("%s enter\n", __func__);
return 0;
return count;

}

Expand All @@ -48,6 +51,15 @@ static const struct file_operations demodrv_fops = {
};


// devnode 回调函数
static char *demo_devnode(struct device *dev, umode_t *mode)
{
if (mode != NULL) {
*mode = 0666; // 所有用户可读写
}
return NULL;
}

static int __init simple_char_init(void)
{
int ret;
Expand All @@ -64,6 +76,7 @@ static int __init simple_char_init(void)
goto unregister_chrdev;
}

demo_major = MAJOR(dev);
cdev_init(demo_cdev, &demodrv_fops);

ret = cdev_add(demo_cdev, dev, count);
Expand All @@ -72,6 +85,13 @@ static int __init simple_char_init(void)
goto cdev_fail;
}

demo_class = class_create(THIS_MODULE, "demo_class");

// 设置设备节点权限
demo_class->devnode = demo_devnode;

device_create(demo_class, NULL, MKDEV(demo_major, 0), NULL, "demo_drv");

printk("succeeded register char device: %s\n", DEMO_NAME);
printk("Major number = %d, minor number = %d\n",
MAJOR(dev), MINOR(dev));
Expand All @@ -90,6 +110,12 @@ static void __exit simple_char_exit(void)
{
printk("removing device\n");

if( demo_class != NULL )
{
device_destroy(demo_class, MKDEV(demo_major, 0));
class_destroy(demo_class);
}

if (demo_cdev)
cdev_del(demo_cdev);

Expand Down
2 changes: 1 addition & 1 deletion run_debian_arm64.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,7 @@ fi
make_kernel_image(){
echo "start build kernel image..."
make debian_defconfig
make -j $JOBCOUNT
make -j $JOBCOUNT V=1
}

make_menuconfig(){
Expand Down
2 changes: 1 addition & 1 deletion run_debian_riscv.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ fi
make_kernel_image(){
echo "start build kernel image..."
make debian_defconfig
make -j $JOBCOUNT
make -j $JOBCOUNT V=1
}

make_menuconfig(){
Expand Down
2 changes: 1 addition & 1 deletion run_debian_x86_64.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ fi
make_kernel_image(){
echo "start build kernel image..."
make debian_defconfig
make -j $JOBCOUNT
make -j $JOBCOUNT V=1
}

prepare_rootfs(){
Expand Down
132 changes: 132 additions & 0 deletions runninglinuxkernel_5.0.code-workspace
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Original file line number Diff line number Diff line change
@@ -0,0 +1,132 @@
{
"folders": [
{
"path": "."
}
],
"settings": {
"search.exclude": {
"arch/alpha" :true,
"arch/m68k" :true,
"arch/arc" :true,
"arch/arm" :true,
"arch/blackfin" :true,
"arch/c6x" :true,
"arch/cris" :true,
"arch/frv" :true,
"arch/h8300" :true,
"arch/hexagon" :true,
"arch/ia64" :true,
"arch/m32r" :true,
"arch/metag" :true,
"arch/microblaze" :true,
"arch/mn10300" :true,
"arch/nios2" :true,
"arch/mips" :true,
"arch/openrisc" :true,
"arch/parisc" :true,
"arch/powerpc" :true,
"arch/s390" :true,
"arch/score" :true,
"arch/sh" :true,
"arch/sparc" :true,
"arch/tile" :true,
"arch/um" :true,
"arch/unicore32" :true,
"arch/x86" :true,
"arch/xtensa" :true,
"arch/arm64/boot/dts/actions" :true,
"arch/arm64/boot/dts/allwinner" :true,
"arch/arm64/boot/dts/amd" :true,
"arch/arm64/boot/dts/apm" :true,
"arch/arm64/boot/dts/broadcom" :true,
"arch/arm64/boot/dts/exynos" :true,
"arch/arm64/boot/dts/hisilicon" :true,
"arch/arm64/boot/dts/qcom" :true,
"arch/arm64/boot/dts/renesas" :true,
"arch/arm64/boot/dts/socionext" :true,
"arch/arm64/boot/dts/xilinx" :true,
"arch/arm64/boot/dts/al" :true,
"arch/arm64/boot/dts/altera" :true,
"arch/arm64/boot/dts/amlogic" :true,
"arch/arm64/boot/dts/arm" :false
"arch/arm64/boot/dts/cavium" :true,
"arch/arm64/boot/dts/freescale" :true,
"arch/arm64/boot/dts/lg" :true,
"arch/arm64/boot/dts/marvell" :true,
"arch/arm64/boot/dts/nvidia" :true,
"arch/arm64/boot/dts/realtek" :true,
"arch/arm64/boot/dts/rockchip" :true,
"arch/arm64/boot/dts/marvell" :true,
"arch/arm64/boot/dts/mediatek" :true,
"arch/arm64/boot/dts/nvidia" :true,
"arch/arm64/boot/dts/realtek" :true,
"arch/arm64/boot/dts/rockchip" :true,
"arch/arm64/boot/dts/sprd" :true,
"arch/arm64/boot/dts/synaptics" :true,
"arch/arm64/boot/dts/ti" :true,
"arch/arm64/boot/dts/zte" :true,
"arch/arm64/boot/dts/riscv" :true,
},
"files.exclude": {
"arch/alpha" :true,
"arch/m68k" :true,
"arch/arc" :true,
"arch/arm" :true,
"arch/blackfin" :true,
"arch/c6x" :true,
"arch/cris" :true,
"arch/frv" :true,
"arch/h8300" :true,
"arch/hexagon" :true,
"arch/ia64" :true,
"arch/m32r" :true,
"arch/metag" :true,
"arch/microblaze" :true,
"arch/mn10300" :true,
"arch/nios2" :true,
"arch/mips" :true,
"arch/openrisc" :true,
"arch/parisc" :true,
"arch/powerpc" :true,
"arch/s390" :true,
"arch/score" :true,
"arch/sh" :true,
"arch/sparc" :true,
"arch/tile" :true,
"arch/um" :true,
"arch/unicore32" :true,
"arch/x86" :true,
"arch/xtensa" :true,
"arch/arm64/boot/dts/actions" :true,
"arch/arm64/boot/dts/allwinner" :true,
"arch/arm64/boot/dts/amd" :true,
"arch/arm64/boot/dts/apm" :true,
"arch/arm64/boot/dts/broadcom" :true,
"arch/arm64/boot/dts/exynos" :true,
"arch/arm64/boot/dts/hisilicon" :true,
"arch/arm64/boot/dts/qcom" :true,
"arch/arm64/boot/dts/renesas" :true,
"arch/arm64/boot/dts/socionext" :true,
"arch/arm64/boot/dts/xilinx" :true,
"arch/arm64/boot/dts/al" :true,
"arch/arm64/boot/dts/altera" :true,
"arch/arm64/boot/dts/amlogic" :true,
"arch/arm64/boot/dts/arm" :false
"arch/arm64/boot/dts/cavium" :true,
"arch/arm64/boot/dts/freescale" :true,
"arch/arm64/boot/dts/lg" :true,
"arch/arm64/boot/dts/marvell" :true,
"arch/arm64/boot/dts/mediatek" :true,
"arch/arm64/boot/dts/nvidia" :true,
"arch/arm64/boot/dts/realtek" :true,
"arch/arm64/boot/dts/rockchip" :true,
"arch/arm64/boot/dts/sprd" :true,
"arch/arm64/boot/dts/synaptics" :true,
"arch/arm64/boot/dts/ti" :true,
"arch/arm64/boot/dts/zte" :true,
"arch/arm64/boot/dts/riscv" :true,
}
}
}