multifile test added

Author: suztomo

multifile/Makefile

@@ -0,0 +1,17 @@
+obj-m += startstop.o
+startstop-objs := start.o stop.o
+
+all:
+	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
+
+clean:
+	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
+
+
+TARGET=startstop
+
+install:
+	sudo insmod $(TARGET).ko
+
+uninstall:
+	sudo rmmod $(TARGET)

multifile/start.c

@@ -0,0 +1,9 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+
+int init_module(void)
+{
+  printk(KERN_INFO "Hello world!\n");
+  return 0;
+}

multifile/stop.c

@@ -0,0 +1,7 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+void cleanup_module(void)
+{
+  printk(KERN_INFO "Goodbye world.\n");
+}

proc_hack/proc_hack.c

@@ -35,7 +35,7 @@ proc_pid_readdir_hook original_in_proc_pid_readdir;
 
 int func_proc_pid_readdir (struct tgid_iter *iter) {
   int ret = 0;
-  if (current->hp_node > 0) {
+  if (current->hp_node >= 0) {
     if (iter->task->hp_node != current->hp_node) {
       printk("*** %s ", iter->task->comm);
       printk(" <- %s", current->comm);
@@ -90,7 +90,7 @@ void mark_process(void) {
       printk(KERN_INFO "*** %s [%ld] parent %s\n",
              task->comm, task->hp_node, task->parent->comm);
     } else {
-      task->hp_node = 0;
+      task->hp_node = -1;
     }
   } while ((task = next_task(task)) != &init_task);
 }