diff --git a/.gitignore b/.gitignore
index 8aa5cad..cc497f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .idea
 obj
-ps_tester
\ No newline at end of file
+ps_tester
+patch_kernel
diff --git a/Makefile b/Makefile
index 8469930..eaa0ee4 100644
--- a/Makefile
+++ b/Makefile
@@ -32,14 +32,21 @@ fclean: clean
 re: fclean
 	@$(MAKE) -C $$PWD
 
-patch_kernel:
+patch_kernel: patch.diff
+	git -C $(KDIR) apply $$PWD/patch.diff
+	touch patch_kernel
 
-compile_kernel: #patch_kernel
-	$(MAKE) -C $(KDIR) LLVM=1 -j 6
+restore_kernel: patch_kernel
+	git -C $(KDIR) checkout .
+	rm -rf $(KDIR)/kernel/get_pid_info
+	rm -rf patch_kernel
 
 mount_boot:
 	mount /dev/vda1
 
+compile_kernel: patch_kernel
+	$(MAKE) -C $(KDIR) LLVM=1 -j 6
+
 install_kernel: mount_boot compile_kernel
 	$(MAKE) -C $(KDIR) LLVM=1 modules_install
 	cp -iv $(KDIR)/System.map /boot/System.map-6.12.0-modded
@@ -50,4 +57,4 @@ install_kernel: mount_boot compile_kernel
 install: install_kernel
 	reboot
 
-.PHONY: install compile_kernel install_kernel patch_kernel mount_boot
+.PHONY: install compile_kernel install_kernel mount_boot restore_kernel