Better proc_kill () and process cleanup

kernel/proc/proc.h

@@ -39,20 +39,9 @@ struct proc {
   struct pd pd;
   spin_lock_t lock;
   struct cpu* cpu;
-  // struct procw* procw; /* link to it's global struct */
   atomic_int state;
 };
 
-/*
- * struct proc is a member of a CPU's proc_run_q.
- * struct procw is a process wrapper that is a member of
- * a global process list.
- */
-/* struct procw { */
-/*   struct procw* next; */
-/*   struct proc* proc; */
-/* }; */
-
 void proc_sched (void);
 void proc_kill (struct proc* proc);
 void proc_map (struct proc* proc, uintptr_t start_paddr, uintptr_t start_vaddr, size_t pages,