From a68d952cb63a89c3a2e3ba600c9bc53c112fc0ae Mon Sep 17 00:00:00 2001
From: Vineet Gupta <vgupta@synopsys.com>
Date: Fri, 18 Jan 2013 15:12:21 +0530
Subject: [PATCH] --- yaml --- r: 360149 b: refs/heads/master c:
 c08098f28e3f3830086b1b542c2d2646a84e109c h: refs/heads/master i:   360147:
 209fc5b69d12429edf55a032af8141a97d9dcaf4 v: v3

---
 [refs]                               |  2 +-
 trunk/arch/arc/kernel/ptrace.c       | 26 +++++++++++++++++
 trunk/arch/arc/kernel/stacktrace.c   | 43 ++++++++++++++++++++++++++++
 trunk/arch/arc/kernel/troubleshoot.c | 17 +++++++++++
 4 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 trunk/arch/arc/kernel/ptrace.c
 create mode 100644 trunk/arch/arc/kernel/stacktrace.c
 create mode 100644 trunk/arch/arc/kernel/troubleshoot.c

diff --git a/[refs] b/[refs]
index 20688eb0438a..f13bc2ad3e43 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: abe11ddea1d759f9995a9a4636c28c9b40856ca8
+refs/heads/master: c08098f28e3f3830086b1b542c2d2646a84e109c
diff --git a/trunk/arch/arc/kernel/ptrace.c b/trunk/arch/arc/kernel/ptrace.c
new file mode 100644
index 000000000000..1cf944a77f33
--- /dev/null
+++ b/trunk/arch/arc/kernel/ptrace.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/ptrace.h>
+
+void ptrace_disable(struct task_struct *child)
+{
+}
+
+long arch_ptrace(struct task_struct *child, long request,
+		 unsigned long addr, unsigned long data)
+{
+	int ret = -EIO;
+	return ret;
+}
+
+
+const struct user_regset_view *task_user_regset_view(struct task_struct *task)
+{
+	return (const struct user_regset_view *)NULL;
+}
diff --git a/trunk/arch/arc/kernel/stacktrace.c b/trunk/arch/arc/kernel/stacktrace.c
new file mode 100644
index 000000000000..b9d1646d1220
--- /dev/null
+++ b/trunk/arch/arc/kernel/stacktrace.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/ptrace.h>
+#include <linux/export.h>
+
+/*-------------------------------------------------------------------------
+ *              APIs expected by various kernel sub-systems
+ *-------------------------------------------------------------------------
+ */
+
+noinline void show_stacktrace(struct task_struct *tsk, struct pt_regs *regs)
+{
+	pr_info("\nStack Trace: NOT Available\n");
+}
+EXPORT_SYMBOL(show_stacktrace);
+
+/* Expected by sched Code */
+void show_stack(struct task_struct *tsk, unsigned long *sp)
+{
+	show_stacktrace(tsk, NULL);
+}
+
+/* Expected by Rest of kernel code */
+void dump_stack(void)
+{
+	show_stacktrace(NULL, NULL);
+}
+EXPORT_SYMBOL(dump_stack);
+
+/* Another API expected by schedular, shows up in "ps" as Wait Channel
+ * Ofcourse just returning schedule( ) would be pointless so unwind until
+ * the function is not in schedular code
+ */
+unsigned int get_wchan(struct task_struct *tsk)
+{
+	return 0;
+}
diff --git a/trunk/arch/arc/kernel/troubleshoot.c b/trunk/arch/arc/kernel/troubleshoot.c
new file mode 100644
index 000000000000..80bfe2a15a98
--- /dev/null
+++ b/trunk/arch/arc/kernel/troubleshoot.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ */
+
+#include <linux/ptrace.h>
+
+void show_regs(struct pt_regs *regs)
+{
+}
+
+void show_kernel_fault_diag(const char *str, struct pt_regs *regs,
+			    unsigned long address, unsigned long cause_reg)
+{
+}