#include #include MODULE_LICENSE("GPL"); unsigned char *vmallocmem1; unsigned char *vmallocmem2; unsigned char *vmallocmem3; static int __init mem_module_init(void) { printk("Start vmalloc!n"); vmallocmem1 = (unsigned char*)vmalloc(8192); if (vmallocmem1 != NULL){ printk("vmallocmem1 addr = %lxn", (unsigned long)vmallocmem1); }else{printk("Failed to allocate vmallocmem1!n"); }vmallocmem2 = (unsigned char*)vmalloc(1048576); if (vmallocmem2 != NULL){ printk("vmallocmem2 addr = %lxn", (unsigned long)vmallocmem2); }else{printk("Failed to allocate vmallocmem2!n"); }vmallocmem3 = (unsigned char*)vmalloc(67108864); if (vmallocmem3 != NULL){ printk("vmallocmem3 addr = %lxn", (unsigned long)vmallocmem3); }else{printk("Failed to allocate vmallocmem3!n"); }return 0; }static void __exit mem_module_exit(void) { vfree(vmallocmem1); vfree(vmallocmem2); vfree(vmallocmem3); printk("Exit vmalloc!n"); }module_init(mem_module_init); module_exit(mem_module_exit); 43
ifneq ($(KERNELRELEASE),) obj-m := vmalloc.o else KERNELDIR ?=/root/raspberrypi-kernel PWD := $(shell pwd) default: $(MAKE) -C $(KERNELDIR) M=$(PWD) modules endif .PHONY:clean clean:-rm *.mod.c *.o *.order *.symvers *.ko
