ifneq ($(KERNELRELEASE),)
 
 obj-m+= call1.o
 
 else
 PWD :=$(shell pwd)
 KVER ?=$(shell uname -r)
 KDIR :=/lib/modules/$(KVER)/build
 KBUILD_EXTRA_SYMBOLS=/home/liyue/Desktop/locksleep/lock_provider/Module.symvers
 all:
	$(MAKE) -C $(KDIR) M=$(PWD)
 clean:
	rm -rf *.0 *.mod.c *.ko *.symvers
 endif
