52 files changed, 52 insertions, 158 deletions

diff --git a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c
index c14815dca747..3b1dd5496d08 100644
--- a/arch/ia64/kernel/machine_kexec.c
+++ b/arch/ia64/kernel/machine_kexec.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * arch/ia64/kernel/machine_kexec.c
  *
@@ -5,9 +6,6 @@
  * Copyright (C) 2005 Hewlett-Packard Development Comapny, L.P.
  * Copyright (C) 2005 Khalid Aziz <khalid.aziz@hp.com>
  * Copyright (C) 2006 Intel Corp, Zou Nan hai <nanhai.zou@intel.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/mm.h>
diff --git a/arch/ia64/kernel/relocate_kernel.S b/arch/ia64/kernel/relocate_kernel.S
index c370e02f0061..7124fe7bec7c 100644
--- a/arch/ia64/kernel/relocate_kernel.S
+++ b/arch/ia64/kernel/relocate_kernel.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * arch/ia64/kernel/relocate_kernel.S
  *
@@ -6,9 +7,6 @@
  * Copyright (C) 2005 Hewlett-Packard Development Company, L.P.
  * Copyright (C) 2005 Khalid Aziz  <khalid.aziz@hp.com>
  * Copyright (C) 2005 Intel Corp,  Zou Nan hai <nanhai.zou@intel.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 #include <asm/asmmacro.h>
 #include <asm/kregs.h>
diff --git a/arch/mips/include/asm/kexec.h b/arch/mips/include/asm/kexec.h
index 40795ca89961..d6d5fa5cc31d 100644
--- a/arch/mips/include/asm/kexec.h
+++ b/arch/mips/include/asm/kexec.h
@@ -1,9 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * kexec.h for kexec
  * Created by <nschichan@corp.free.fr> on Thu Oct 12 14:59:34 2006
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #ifndef _MIPS_KEXEC
diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c
index 93936dce04d6..432bfd3e7f22 100644
--- a/arch/mips/kernel/machine_kexec.c
+++ b/arch/mips/kernel/machine_kexec.c
@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * machine_kexec.c for kexec
  * Created by <nschichan@corp.free.fr> on Thu Oct 12 15:15:06 2006
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 #include <linux/compiler.h>
 #include <linux/kexec.h>
diff --git a/arch/mips/kernel/relocate_kernel.S b/arch/mips/kernel/relocate_kernel.S
index 419c92197b2f..ac870893ba2d 100644
--- a/arch/mips/kernel/relocate_kernel.S
+++ b/arch/mips/kernel/relocate_kernel.S
@@ -1,9 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * relocate_kernel.S for kexec
  * Created by <nschichan@corp.free.fr> on Thu Oct 12 17:49:57 2006
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <asm/asm.h>
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 43a3ce2301e8..d488311efab1 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Architecture specific (PPC64) functions for kexec based crash dumps.
  *
  * Copyright (C) 2005, IBM Corp.
  *
  * Created by: Haren Myneni
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
- *
  */
 
 #include <linux/kernel.h>
diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index bbdc4706c159..05745ddbd229 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Routines for doing kexec-based kdump.
  *
  * Copyright (C) 2005, IBM Corp.
  *
  * Created by: Michael Ellerman
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #undef DEBUG
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index 63f5a9311a29..c4ed328a7b96 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Code to handle transition of Linux booting another kernel.
  *
  * Copyright (C) 2002-2003 Eric Biederman  <ebiederm@xmission.com>
  * GameCube/ppc32 port Copyright (C) 2004 Albert Herranz
  * Copyright (C) 2005 IBM Corporation.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/kexec.h>
diff --git a/arch/powerpc/kernel/machine_kexec_32.c b/arch/powerpc/kernel/machine_kexec_32.c
index 2b160d68db49..bf9f1f906d64 100644
--- a/arch/powerpc/kernel/machine_kexec_32.c
+++ b/arch/powerpc/kernel/machine_kexec_32.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * PPC32 code to handle Linux booting another kernel.
  *
  * Copyright (C) 2002-2003 Eric Biederman  <ebiederm@xmission.com>
  * GameCube/ppc32 port Copyright (C) 2004 Albert Herranz
  * Copyright (C) 2005 IBM Corporation.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/kexec.h>
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index 75692c327ba0..18481b0e2788 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * PPC64 code to handle Linux booting another kernel.
  *
  * Copyright (C) 2004-2005, IBM Corp.
  *
  * Created by: Milton D Miller II
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 
diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index 22f60dd26460..f03237e3f192 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Kexec bzImage loader
  *
  * Copyright (C) 2014 Red Hat Inc.
  * Authors:
  *      Vivek Goyal <vgoyal@redhat.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #define pr_fmt(fmt)     "kexec-bzImage64: " fmt
diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
index 5409c2800ab5..77854b192fef 100644
--- a/arch/x86/kernel/machine_kexec_32.c
+++ b/arch/x86/kernel/machine_kexec_32.c
@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * handle transition of Linux booting another kernel
  * Copyright (C) 2002-2005 Eric Biederman  <ebiederm@xmission.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/mm.h>
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index ceba408ea982..d7be2376ac0b 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * handle transition of Linux booting another kernel
  * Copyright (C) 2002-2005 Eric Biederman  <ebiederm@xmission.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #define pr_fmt(fmt)     "kexec: " fmt
diff --git a/arch/x86/kernel/relocate_kernel_32.S b/arch/x86/kernel/relocate_kernel_32.S
index 77630d57e7bf..ee26df08002e 100644
--- a/arch/x86/kernel/relocate_kernel_32.S
+++ b/arch/x86/kernel/relocate_kernel_32.S
@@ -1,9 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * relocate_kernel.S - put the kernel image in place to boot
  * Copyright (C) 2002-2004 Eric Biederman  <ebiederm@xmission.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/linkage.h>
diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S
index 11eda21eb697..c51ccff5cd01 100644
--- a/arch/x86/kernel/relocate_kernel_64.S
+++ b/arch/x86/kernel/relocate_kernel_64.S
@@ -1,9 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * relocate_kernel.S - put the kernel image in place to boot
  * Copyright (C) 2002-2005 Eric Biederman  <ebiederm@xmission.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/linkage.h>
diff --git a/arch/x86/kernel/verify_cpu.S b/arch/x86/kernel/verify_cpu.S
index 3d3c2f71f617..a024c4f7ba56 100644
--- a/arch/x86/kernel/verify_cpu.S
+++ b/arch/x86/kernel/verify_cpu.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *
  *      verify_cpu.S - Code for cpu long mode and SSE verification. This
@@ -9,9 +10,6 @@
  *      Copyright (c) 2007  Vivek Goyal (vgoyal@in.ibm.com)
  *      Copyright (c) 2010  Kees Cook (kees.cook@canonical.com)
  *
- *      This source code is licensed under the GNU General Public License,
- *      Version 2.  See the file COPYING for more details.
- *
  *      This is a common code for verification whether CPU supports
  *      long mode and SSE or not. It is not called directly instead this
  *      file is included at various places and compiled in that context.
diff --git a/arch/x86/purgatory/entry64.S b/arch/x86/purgatory/entry64.S
index d1a4291d3568..275a646d1048 100644
--- a/arch/x86/purgatory/entry64.S
+++ b/arch/x86/purgatory/entry64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (C) 2003,2004  Eric Biederman (ebiederm@xmission.com)
  * Copyright (C) 2014  Red Hat Inc.
@@ -5,9 +6,6 @@
  * Author(s): Vivek Goyal <vgoyal@redhat.com>
  *
  * This code has been taken from kexec-tools.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
         .text
diff --git a/arch/x86/purgatory/purgatory.c b/arch/x86/purgatory/purgatory.c
index 025c34ac0d84..6d8d5a34c377 100644
--- a/arch/x86/purgatory/purgatory.c
+++ b/arch/x86/purgatory/purgatory.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * purgatory: Runs between two kernels
  *
@@ -5,9 +6,6 @@
  *
  * Author:
  *       Vivek Goyal <vgoyal@redhat.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/bug.h>
diff --git a/arch/x86/purgatory/setup-x86_64.S b/arch/x86/purgatory/setup-x86_64.S
index dfae9b9e60b5..321146be741d 100644
--- a/arch/x86/purgatory/setup-x86_64.S
+++ b/arch/x86/purgatory/setup-x86_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * purgatory:  setup code
  *
@@ -5,9 +6,6 @@
  * Copyright (C) 2014 Red Hat Inc.
  *
  * This code has been taken from kexec-tools.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 #include <asm/purgatory.h>
 
diff --git a/arch/x86/purgatory/stack.S b/arch/x86/purgatory/stack.S
index 50a4147f91fb..8b1427422dfc 100644
--- a/arch/x86/purgatory/stack.S
+++ b/arch/x86/purgatory/stack.S
@@ -1,10 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * purgatory:  stack
  *
  * Copyright (C) 2014 Red Hat Inc.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
         /* A stack for the loaded kernel.
diff --git a/arch/x86/purgatory/string.c b/arch/x86/purgatory/string.c
index 795ca4f2cb3c..01ad43873ad9 100644
--- a/arch/x86/purgatory/string.c
+++ b/arch/x86/purgatory/string.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Simple string functions.
  *
@@ -5,9 +6,6 @@
  *
  * Author:
  *       Vivek Goyal <vgoyal@redhat.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/types.h>
diff --git a/drivers/w1/slaves/w1_ds2406.c b/drivers/w1/slaves/w1_ds2406.c
index fac266366ca3..762e5e4e2b48 100644
--- a/drivers/w1/slaves/w1_ds2406.c
+++ b/drivers/w1/slaves/w1_ds2406.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * w1_ds2406.c - w1 family 12 (DS2406) driver
  * based on w1_ds2413.c by Mariusz Bialonczyk <manio@skyboo.net>
  *
  * Copyright (c) 2014 Scott Alfter <scott@alfter.us>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_ds2408.c b/drivers/w1/slaves/w1_ds2408.c
index edf0bc98012c..83f8d94bb814 100644
--- a/drivers/w1/slaves/w1_ds2408.c
+++ b/drivers/w1/slaves/w1_ds2408.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *      w1_ds2408.c - w1 family 29 (DS2408) driver
  *
  * Copyright (c) 2010 Jean-Francois Dagenais <dagenaisj@sonatest.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_ds2413.c b/drivers/w1/slaves/w1_ds2413.c
index 492e3d010321..5ae74d5545e6 100644
--- a/drivers/w1/slaves/w1_ds2413.c
+++ b/drivers/w1/slaves/w1_ds2413.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * w1_ds2413.c - w1 family 3a (DS2413) driver
  * based on w1_ds2408.c by Jean-Francois Dagenais <dagenaisj@sonatest.com>
  *
  * Copyright (c) 2013 Mariusz Bialonczyk <manio@skyboo.net>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_ds2431.c b/drivers/w1/slaves/w1_ds2431.c
index 5adecd3face1..e5bd7e2354d7 100644
--- a/drivers/w1/slaves/w1_ds2431.c
+++ b/drivers/w1/slaves/w1_ds2431.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * w1_ds2431.c - w1 family 2d (DS2431) driver
  *
  * Copyright (c) 2008 Bernhard Weirich <bernhard.weirich@riedel.net>
  *
  * Heavily inspired by w1_DS2433 driver from Ben Gardner <bgardner@wabtec.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_ds2433.c b/drivers/w1/slaves/w1_ds2433.c
index 75ad70cfe8e8..1f805c86517a 100644
--- a/drivers/w1/slaves/w1_ds2433.c
+++ b/drivers/w1/slaves/w1_ds2433.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *      w1_ds2433.c - w1 family 23 (DS2433) driver
  *
  * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_ds2438.c b/drivers/w1/slaves/w1_ds2438.c
index 7c4e33dbee4d..d199e5a25cc0 100644
--- a/drivers/w1/slaves/w1_ds2438.c
+++ b/drivers/w1/slaves/w1_ds2438.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * 1-Wire implementation for the ds2438 chip
  *
  * Copyright (c) 2017 Mariusz Bialonczyk <manio@skyboo.net>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_ds2805.c b/drivers/w1/slaves/w1_ds2805.c
index 29348d283a65..ee1ec9867a78 100644
--- a/drivers/w1/slaves/w1_ds2805.c
+++ b/drivers/w1/slaves/w1_ds2805.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * w1_ds2805 - w1 family 0d (DS28E05) driver
  *
  * Copyright (c) 2016 Andrew Worsley amworsley@gmail.com
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_ds28e04.c b/drivers/w1/slaves/w1_ds28e04.c
index ec234b846eb3..8a640f159078 100644
--- a/drivers/w1/slaves/w1_ds28e04.c
+++ b/drivers/w1/slaves/w1_ds28e04.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *      w1_ds28e04.c - w1 family 1C (DS28E04) driver
  *
  * Copyright (c) 2012 Markus Franke <franke.m@sebakmt.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/w1/slaves/w1_ds28e17.c b/drivers/w1/slaves/w1_ds28e17.c
index e78b63ea4daf..046ddda83df9 100644
--- a/drivers/w1/slaves/w1_ds28e17.c
+++ b/drivers/w1/slaves/w1_ds28e17.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *      w1_ds28e17.c - w1 family 19 (DS28E17) driver
  *
  * Copyright (c) 2016 Jan Kandziora <jjj@gmx.de>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/crc16.h>
diff --git a/include/linux/crc-itu-t.h b/include/linux/crc-itu-t.h
index a9953c762eee..a4367051e192 100644
--- a/include/linux/crc-itu-t.h
+++ b/include/linux/crc-itu-t.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *      crc-itu-t.h - CRC ITU-T V.41 routine
  *
@@ -5,9 +6,6 @@
  *   Width 16
  *   Poly  0x1021 (x^16 + x^12 + x^15 + 1)
  *   Init  0
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #ifndef CRC_ITU_T_H
diff --git a/include/linux/crc16.h b/include/linux/crc16.h
index 9443c084f881..9fa74529b317 100644
--- a/include/linux/crc16.h
+++ b/include/linux/crc16.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *      crc16.h - CRC-16 routine
  *
@@ -7,9 +8,6 @@
  *   Init  0
  *
  * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #ifndef __CRC16_H
diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index a337313e064f..205f62b8d291 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Basic general purpose allocator for managing special purpose
  * memory, for example, memory that is not managed by the regular
@@ -21,9 +22,6 @@
  * the allocator can NOT be used in NMI handler.  So code uses the
  * allocator in NMI handler should depend on
  * CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 
diff --git a/include/linux/sha256.h b/include/linux/sha256.h
index 244fe01a65fb..26972b9e92db 100644
--- a/include/linux/sha256.h
+++ b/include/linux/sha256.h
@@ -1,10 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *  Copyright (C) 2014 Red Hat Inc.
  *
  *  Author: Vivek Goyal <vgoyal@redhat.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #ifndef SHA256_H
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 093c9f917ed0..9f1557b98468 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * crash.c - kernel crash support code.
  * Copyright (C) 2002-2004 Eric Biederman  <ebiederm@xmission.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/crash_core.h>
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 68559808fdfa..1b018f1a6e0d 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kexec.c - kexec_load system call
  * Copyright (C) 2002-2004 Eric Biederman  <ebiederm@xmission.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index fd5c95ff9251..d5870723b8ad 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kexec.c - kexec system call core code.
  * Copyright (C) 2002-2004 Eric Biederman  <ebiederm@xmission.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 072b6ee55e3f..ef7b951a8087 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kexec: kexec_file_load system call
  *
  * Copyright (C) 2014 Red Hat Inc.
  * Authors:
  *      Vivek Goyal <vgoyal@redhat.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/lib/bitmap.c b/lib/bitmap.c
index f235434df87b..bbe2589e8497 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * lib/bitmap.c
  * Helper functions for bitmap.h.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 #include <linux/export.h>
 #include <linux/thread_info.h>
diff --git a/lib/cmdline.c b/lib/cmdline.c
index dc59d6216318..fbb9981a04a4 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/lib/cmdline.c
  * Helper functions generally used for parsing kernel command line
@@ -5,11 +6,7 @@
  *
  * Code and copyrights come from init/main.c and arch/i386/kernel/setup.c.
  *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
- *
  * GNU Indent formatting options for this file: -kr -i8 -npsl -pcs
- *
  */
 
 #include <linux/export.h>
diff --git a/lib/crc-ccitt.c b/lib/crc-ccitt.c
index d873b34039ff..d1a7d29d2ac9 100644
--- a/lib/crc-ccitt.c
+++ b/lib/crc-ccitt.c
@@ -1,8 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *      linux/lib/crc-ccitt.c
- *
- *      This source code is licensed under the GNU General Public License,
- *      Version 2. See the file COPYING for more details.
  */
 
 #include <linux/types.h>
diff --git a/lib/crc-itu-t.c b/lib/crc-itu-t.c
index b3219d0abfb4..1974b355c148 100644
--- a/lib/crc-itu-t.c
+++ b/lib/crc-itu-t.c
@@ -1,8 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *      crc-itu-t.c
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/types.h>
diff --git a/lib/crc-t10dif.c b/lib/crc-t10dif.c
index e89ebfdbb0fc..8cc01a603416 100644
--- a/lib/crc-t10dif.c
+++ b/lib/crc-t10dif.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * T10 Data Integrity Field CRC16 calculation
  *
  * Copyright (c) 2007 Oracle Corporation.  All rights reserved.
  * Written by Martin K. Petersen <martin.petersen@oracle.com>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/types.h>
diff --git a/lib/crc16.c b/lib/crc16.c
index 8737b084d1f9..5c3a803c01e0 100644
--- a/lib/crc16.c
+++ b/lib/crc16.c
@@ -1,8 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *      crc16.c
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/types.h>
diff --git a/lib/crc4.c b/lib/crc4.c
index 164ed9444cd3..e7e1779c67d9 100644
--- a/lib/crc4.c
+++ b/lib/crc4.c
@@ -1,8 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * crc4.c - simple crc-4 calculations.
- *
- * This source code is licensed under the GNU General Public License, Version
- * 2. See the file COPYING for more details.
  */
 
 #include <linux/crc4.h>
diff --git a/lib/crc7.c b/lib/crc7.c
index bf6255e23919..6a848d73e804 100644
--- a/lib/crc7.c
+++ b/lib/crc7.c
@@ -1,8 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *      crc7.c
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/types.h>
diff --git a/lib/genalloc.c b/lib/genalloc.c
index 770c769d7cb7..5257f74fccf3 100644
--- a/lib/genalloc.c
+++ b/lib/genalloc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Basic general purpose allocator for managing special purpose
  * memory, for example, memory that is not managed by the regular
@@ -23,9 +24,6 @@
  * CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG.
  *
  * Copyright 2005 (C) Jes Sorensen <jes@trained-monkey.org>
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/slab.h>
diff --git a/lib/parser.c b/lib/parser.c
index dd70e5e6c9e2..f5b3e5d7a7f9 100644
--- a/lib/parser.c
+++ b/lib/parser.c
@@ -1,8 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * lib/parser.c - simple parser for mount, etc. options.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 
 #include <linux/ctype.h>
diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index 739dc9fe2c55..2882d9ba6607 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2007 Jens Axboe <jens.axboe@oracle.com>
  *
  * Scatterlist handling helpers.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 #include <linux/export.h>
 #include <linux/slab.h>
diff --git a/lib/sg_split.c b/lib/sg_split.c
index b063410c3593..9982c63d1063 100644
--- a/lib/sg_split.c
+++ b/lib/sg_split.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2015 Robert Jarzmik <robert.jarzmik@free.fr>
  *
  * Scatterlist splitting helpers.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
  */
 
 #include <linux/scatterlist.h>
diff --git a/net/netfilter/nf_conntrack_h323_asn1.c b/net/netfilter/nf_conntrack_h323_asn1.c
index 4c2ef42e189c..8f6ba8162f0b 100644
--- a/net/netfilter/nf_conntrack_h323_asn1.c
+++ b/net/netfilter/nf_conntrack_h323_asn1.c
@@ -1,13 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * ip_conntrack_helper_h323_asn1.c - BER and PER decoding library for H.323
  *                                   conntrack/NAT module.
  *
  * Copyright (c) 2006 by Jing Min Zhao <zhaojingmin@users.sourceforge.net>
  *
- * This source code is licensed under General Public License version 2.
- *
  * See ip_conntrack_helper_h323_asn1.h for details.
- *
  */
 
 #ifdef __KERNEL__
diff --git a/tools/lib/bitmap.c b/tools/lib/bitmap.c
index 38748b0e342f..38494782be06 100644
--- a/tools/lib/bitmap.c
+++ b/tools/lib/bitmap.c
@@ -1,9 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * From lib/bitmap.c
  * Helper functions for bitmap.h.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2.  See the file COPYING for more details.
  */
 #include <linux/bitmap.h>