kernel: debug: Add SPDX license ids to kdb files

Add GPL-2.0 license id to some files related to kdb and kgdb,
replacing references to GPL or COPYING.

These files were introduced into the kernel in 2008 and 2010.

Signed-off-by: Tim Bird <tim.bird@sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: tbird20d

include/linux/kdb.h

@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _KDB_H
 #define _KDB_H
 
 /*
  * Kernel Debugger Architecture Independent Global Headers
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  * Copyright (c) 2000-2007 Silicon Graphics, Inc.  All Rights Reserved.
  * Copyright (C) 2000 Stephane Eranian <eranian@hpl.hp.com>
  * Copyright (C) 2009 Jason Wessel <jason.wessel@windriver.com>

include/linux/kgdb.h

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * This provides the callbacks and functions that KGDB needs to share between
  * the core, I/O and arch-specific portions.
@@ -6,9 +7,6 @@
  *         Tom Rini <trini@kernel.crashing.org>
  *
  * 2001-2004 (c) Amit S. Kale and 2003-2005 (c) MontaVista Software, Inc.
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 #ifndef _KGDB_H_
 #define _KGDB_H_

kernel/debug/debug_core.h

@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Created by: Jason Wessel <jason.wessel@windriver.com>
  *
  * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 
 #ifndef _DEBUG_CORE_H_

kernel/debug/kdb/kdb_bp.c

@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Kernel Debugger Architecture Independent Breakpoint Handler
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  * Copyright (c) 1999-2004 Silicon Graphics, Inc.  All Rights Reserved.
  * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
  */

kernel/debug/kdb/kdb_bt.c

@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Kernel Debugger Architecture Independent Stack Traceback
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  * Copyright (c) 1999-2004 Silicon Graphics, Inc.  All Rights Reserved.
  * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
  */

kernel/debug/kdb/kdb_debugger.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Created by: Jason Wessel <jason.wessel@windriver.com>
  *

kernel/debug/kdb/kdb_io.c

@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Kernel Debugger Architecture Independent Console I/O handler
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  * Copyright (c) 1999-2006 Silicon Graphics, Inc.  All Rights Reserved.
  * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
  */

kernel/debug/kdb/kdb_keyboard.c

@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Kernel Debugger Architecture Dependent Console I/O handler
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.
- *
  * Copyright (c) 1999-2006 Silicon Graphics, Inc.  All Rights Reserved.
  * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
  */

kernel/debug/kdb/kdb_main.c

@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Kernel Debugger Architecture Independent Main Code
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  * Copyright (C) 1999-2004 Silicon Graphics, Inc.  All Rights Reserved.
  * Copyright (C) 2000 Stephane Eranian <eranian@hpl.hp.com>
  * Xscale (R) modifications copyright (C) 2003 Intel Corporation.

kernel/debug/kdb/kdb_private.h

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _KDBPRIVATE_H
 #define _KDBPRIVATE_H