From a642bd3d5746ac676df6834bed1cc7f664d62627 Mon Sep 17 00:00:00 2001
From: Mark Huang <mlhuang@cs.princeton.edu>
Date: Fri, 1 Oct 2004 17:54:48 +0000
Subject: [PATCH] - Just panic() instead of the default behavior of selecting
 processes   for death.

---
 mm/oom_panic.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 mm/oom_panic.c

diff --git a/mm/oom_panic.c b/mm/oom_panic.c
new file mode 100644
index 000000000..b782934ac
--- /dev/null
+++ b/mm/oom_panic.c
@@ -0,0 +1,51 @@
+/* 
+ * Just panic() instead of the default behavior of selecting processes
+ * for death.
+ *
+ * Based on
+ * Modular OOM handlers for 2.6.4 (C) 2003,2004 Tvrtko A. Ursulin
+ * and
+ * linux/mm/oom_kill.c (C) 1998,2000 Rik van Riel.
+ *
+ * Mark Huang <mlhuang@cs.princeton.edu>
+ *
+ * $Id$
+ */
+
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/swap.h>
+
+/**
+ * out_of_memory - is the system out of memory?
+ */
+void out_of_memory(int gfp_mask)
+{
+	/*
+	 * oom_lock protects out_of_memory()'s static variables.
+	 * It's a global lock; this is not performance-critical.
+	 */
+	static spinlock_t oom_lock = SPIN_LOCK_UNLOCKED;
+	static unsigned long count;
+
+	spin_lock(&oom_lock);
+
+	/*
+	 * If we have gotten only a few failures,
+	 * we're not really oom. 
+	 */
+	if (++count < 10)
+		goto out_unlock;
+
+	/*
+	 * Ok, really out of memory. Panic.
+	 */
+
+	printk("oom-killer: gfp_mask=0x%x\n", gfp_mask);
+	show_free_areas();
+
+	panic("Out Of Memory");
+
+out_unlock:
+	spin_unlock(&oom_lock);
+}
-- 
2.47.0