first commit

1 files changed, 66 insertions, 0 deletions

diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
new file mode 100644
index 000000000..7d101a2a1
--- /dev/null
+++ b/arch/um/kernel/sysrq.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#include <linux/kallsyms.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <asm/sysrq.h>
+
+/* Catch non-i386 SUBARCH's. */
+#if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT)
+void show_trace(struct task_struct *task, unsigned long * stack)
+{
+	unsigned long addr;
+
+	if (!stack) {
+		stack = (unsigned long*) &stack;
+		WARN_ON(1);
+	}
+
+	printk(KERN_INFO "Call Trace: \n");
+	while (((long) stack & (THREAD_SIZE-1)) != 0) {
+		addr = *stack;
+		if (__kernel_text_address(addr)) {
+			printk(KERN_INFO "%08lx:  [<%08lx>]",
+			       (unsigned long) stack, addr);
+			print_symbol(KERN_CONT " %s", addr);
+			printk(KERN_CONT "\n");
+		}
+		stack++;
+	}
+	printk(KERN_INFO "\n");
+}
+#endif
+
+/*Stolen from arch/i386/kernel/traps.c */
+static const int kstack_depth_to_print = 24;
+
+/* This recently started being used in arch-independent code too, as in
+ * kernel/sched.c.*/
+void show_stack(struct task_struct *task, unsigned long *esp)
+{
+	unsigned long *stack;
+	int i;
+
+	if (esp == NULL) {
+		if (task != current && task != NULL) {
+			esp = (unsigned long *) KSTK_ESP(task);
+		} else {
+			esp = (unsigned long *) &esp;
+		}
+	}
+
+	stack = esp;
+	for (i = 0; i < kstack_depth_to_print; i++) {
+		if (kstack_end(stack))
+			break;
+		if (i && ((i % 8) == 0))
+			printk(KERN_INFO "       ");
+		printk(KERN_CONT "%08lx ", *stack++);
+	}
+
+	show_trace(task, esp);
+}