patch-2.3.11 linux/kernel/exit.c

• Lines: 63
• Date: Wed Jul 21 13:14:41 1999
• Orig file: v2.3.10/linux/kernel/exit.c
• Orig date: Thu Jul 8 15:42:21 1999

diff -u --recursive --new-file v2.3.10/linux/kernel/exit.c linux/kernel/exit.c
@@ -27,29 +27,15 @@
 	if (p != current) {
 #ifdef __SMP__
 		/*
-		 * Wait to make sure the process isn't active on any
-		 * other CPU
+		 * Wait to make sure the process isn't on the
+		 * runqueue (active on some other CPU still)
 		 */
-		for (;;)  {
-			int has_cpu;
-			spin_lock_irq(&runqueue_lock);
-			has_cpu = p->has_cpu;
-			spin_unlock_irq(&runqueue_lock);
-			if (!has_cpu)
-				break;
-			do {
-				barrier();
-			} while (p->has_cpu);
-		}
+		do {
+			barrier();
+		} while (p->has_cpu);
 #endif
 		free_uid(p);
-		nr_tasks--;
-		add_free_taskslot(p->tarray_ptr);
-
-		write_lock_irq(&tasklist_lock);
-		unhash_pid(p);
-		REMOVE_LINKS(p);
-		write_unlock_irq(&tasklist_lock);
+		unhash_process(p);
 
 		release_thread(p);
 		current->cmin_flt += p->min_flt + p->cmin_flt;
@@ -243,19 +229,18 @@
 	__exit_sighand(tsk);
 }
 
+/*
+ * Turn us into a lazy TLB process if we
+ * aren't already..
+ */
 static inline void __exit_mm(struct task_struct * tsk)
 {
 	struct mm_struct * mm = tsk->mm;
 
-	/* Set us up to use the kernel mm state */
-	if (mm != &init_mm) {
-		flush_cache_mm(mm);
-		flush_tlb_mm(mm);
-		destroy_context(mm);
-		tsk->mm = &init_mm;
-		tsk->swappable = 0;
-		SET_PAGE_DIR(tsk, swapper_pg_dir);
+	if (mm) {
 		mm_release();
+		atomic_inc(&mm->mm_count);
+		tsk->mm = NULL;
 		mmput(mm);
 	}
 }