Merge tag 'spdx-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull yet more SPDX updates from Greg KH:
 "Another round of SPDX header file fixes for 5.2-rc4

  These are all more "GPL-2.0-or-later" or "GPL-2.0-only" tags being
  added, based on the text in the files. We are slowly chipping away at
  the 700+ different ways people tried to write the license text. All of
  these were reviewed on the spdx mailing list by a number of different
  people.

  We now have over 60% of the kernel files covered with SPDX tags:
	$ ./scripts/spdxcheck.py -v 2>&1 | grep Files
	Files checked:            64533
	Files with SPDX:          40392
	Files with errors:            0

  I think the majority of the "easy" fixups are now done, it's now the
  start of the longer-tail of crazy variants to wade through"

* tag 'spdx-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (159 commits)
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 450
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 449
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 448
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 446
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 445
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 444
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 443
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 442
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 440
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 438
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 437
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 436
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 435
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 434
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 433
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 432
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 431
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 430
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 429
  ...

111 files changed, 111 insertions, 848 deletions

diff --git a/tools/hv/hv_fcopy_daemon.c b/tools/hv/hv_fcopy_daemon.c
index 8ff8cb1a11f4..aea2d91ab364 100644
--- a/tools/hv/hv_fcopy_daemon.c
+++ b/tools/hv/hv_fcopy_daemon.c
@@ -1,19 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * An implementation of host to guest copy functionality for Linux.
  *
  * Copyright (C) 2014, Microsoft, Inc.
  *
  * Author : K. Y. Srinivasan <kys@microsoft.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.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
  */
 
 
diff --git a/tools/hv/hv_vss_daemon.c b/tools/hv/hv_vss_daemon.c
index b13300172762..efe1e34dd91b 100644
--- a/tools/hv/hv_vss_daemon.c
+++ b/tools/hv/hv_vss_daemon.c
@@ -1,20 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * An implementation of the host initiated guest snapshot for Hyper-V.
  *
- *
  * Copyright (C) 2013, Microsoft, Inc.
  * Author : K. Y. Srinivasan <kys@microsoft.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.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
  */
 
 
diff --git a/tools/lib/api/fd/array.c b/tools/lib/api/fd/array.c
index b0a035fc87b3..58d44d5eee31 100644
--- a/tools/lib/api/fd/array.c
+++ b/tools/lib/api/fd/array.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2014, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 #include "array.h"
 #include <errno.h>
diff --git a/tools/pci/pcitest.c b/tools/pci/pcitest.c
index 5fa5c2bdd427..cb7a47dfd8b6 100644
--- a/tools/pci/pcitest.c
+++ b/tools/pci/pcitest.c
@@ -1,20 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /**
  * Userspace PCI Endpoint Test Module
  *
  * Copyright (C) 2017 Texas Instruments
  * Author: Kishon Vijay Abraham I <kishon@ti.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 of
- * the License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <errno.h>
diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c
index 163b92f33998..3db85cd2069e 100644
--- a/tools/perf/arch/s390/util/header.c
+++ b/tools/perf/arch/s390/util/header.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Implementation of get_cpuid().
  *
  * Copyright IBM Corp. 2014, 2018
  * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
  *	      Thomas Richter <tmricht@linux.vnet.ibm.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 only)
- * as published by the Free Software Foundation.
  */
 
 #include <sys/types.h>
diff --git a/tools/perf/arch/s390/util/kvm-stat.c b/tools/perf/arch/s390/util/kvm-stat.c
index 7e3961a4b292..f852f2a77e0a 100644
--- a/tools/perf/arch/s390/util/kvm-stat.c
+++ b/tools/perf/arch/s390/util/kvm-stat.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Arch specific functions for perf kvm stat.
  *
  * Copyright 2014 IBM Corp.
  * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.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 only)
- * as published by the Free Software Foundation.
  */
 
 #include <errno.h>
diff --git a/tools/perf/arch/x86/tests/gen-insn-x86-dat.awk b/tools/perf/arch/x86/tests/gen-insn-x86-dat.awk
index a21454835cd4..1a29f6379bde 100644
--- a/tools/perf/arch/x86/tests/gen-insn-x86-dat.awk
+++ b/tools/perf/arch/x86/tests/gen-insn-x86-dat.awk
@@ -1,15 +1,8 @@
 #!/bin/awk -f
+# SPDX-License-Identifier: GPL-2.0-only
 # gen-insn-x86-dat.awk: script to convert data for the insn-x86 test
 # Copyright (c) 2015, Intel Corporation.
 #
-# This program is free software; you can redistribute it and/or modify it
-# under the terms and conditions of the GNU General Public License,
-# version 2, as published by the Free Software Foundation.
-#
-# This program is distributed in the hope it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-# more details.
 
 BEGIN {
 	print "/*"
diff --git a/tools/perf/arch/x86/tests/gen-insn-x86-dat.sh b/tools/perf/arch/x86/tests/gen-insn-x86-dat.sh
index 2d4ef94cff98..0d0a003a9c5e 100755
--- a/tools/perf/arch/x86/tests/gen-insn-x86-dat.sh
+++ b/tools/perf/arch/x86/tests/gen-insn-x86-dat.sh
@@ -1,15 +1,8 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
 # gen-insn-x86-dat: generate data for the insn-x86 test
 # Copyright (c) 2015, Intel Corporation.
 #
-# This program is free software; you can redistribute it and/or modify it
-# under the terms and conditions of the GNU General Public License,
-# version 2, as published by the Free Software Foundation.
-#
-# This program is distributed in the hope it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-# more details.
 
 set -e
 
diff --git a/tools/perf/arch/x86/util/auxtrace.c b/tools/perf/arch/x86/util/auxtrace.c
index b135af62011c..d711268af330 100644
--- a/tools/perf/arch/x86/util/auxtrace.c
+++ b/tools/perf/arch/x86/util/auxtrace.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * auxtrace.c: AUX area tracing support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <errno.h>
diff --git a/tools/perf/arch/x86/util/intel-bts.c b/tools/perf/arch/x86/util/intel-bts.c
index 781df40b2966..e6d4d9591c79 100644
--- a/tools/perf/arch/x86/util/intel-bts.c
+++ b/tools/perf/arch/x86/util/intel-bts.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel-bts.c: Intel Processor Trace support
  * Copyright (c) 2013-2015, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <errno.h>
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c
index ba8ecaf52200..1869f62a10cd 100644
--- a/tools/perf/arch/x86/util/intel-pt.c
+++ b/tools/perf/arch/x86/util/intel-pt.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel_pt.c: Intel Processor Trace support
  * Copyright (c) 2013-2015, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <errno.h>
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index f42f228e8899..9c228c55e1fb 100644
--- a/tools/perf/builtin-ftrace.c
+++ b/tools/perf/builtin-ftrace.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * builtin-ftrace.c
  *
  * Copyright (c) 2013  LG Electronics,  Namhyung Kim <namhyung@kernel.org>
- *
- * Released under the GPL v2.
  */
 
 #include "builtin.h"
diff --git a/tools/perf/builtin-kallsyms.c b/tools/perf/builtin-kallsyms.c
index bc7a2bc7aed7..c1a44671b0b5 100644
--- a/tools/perf/builtin-kallsyms.c
+++ b/tools/perf/builtin-kallsyms.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * builtin-kallsyms.c
  *
  * Builtin command: Look for a symbol in the running kernel and its modules
  *
  * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 #include <inttypes.h>
 #include "builtin.h"
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 24b8e690fb69..1ae66f09dc7d 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * builtin-stat.c
  *
@@ -37,8 +38,6 @@
  *   Mike Galbraith <efault@gmx.de>
  *   Paul Mackerras <paulus@samba.org>
  *   Jaswinder Singh Rajput <jaswinder@kernel.org>
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 
 #include "perf.h"
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 9b98687a27b9..145a19668114 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * builtin-timechart.c - make an svg timechart of system activity
  *
@@ -5,11 +6,6 @@
  *
  * Authors:
  *     Arjan van de Ven <arjan@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; version 2
- * of the License.
  */
 
 #include <errno.h>
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index fbbb0da43abb..466621cd1017 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * builtin-top.c
  *
@@ -14,8 +15,6 @@
  *   Wu Fengguang <fengguang.wu@intel.com>
  *   Mike Galbraith <efault@gmx.de>
  *   Paul Mackerras <paulus@samba.org>
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 #include "builtin.h"
 
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index f5b3a1e9c1dd..52fadc858ef0 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * builtin-trace.c
  *
@@ -12,8 +13,6 @@
  * Initially based on the 'trace' prototype by Thomas Gleixner:
  *
  * http://lwn.net/Articles/415728/ ("Announcing a new utility: 'trace'")
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 
 #include <traceevent/event-parse.h>
diff --git a/tools/perf/perf-with-kcore.sh b/tools/perf/perf-with-kcore.sh
index 7e47a7cbc195..74e4627ca278 100644
--- a/tools/perf/perf-with-kcore.sh
+++ b/tools/perf/perf-with-kcore.sh
@@ -1,15 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
 # perf-with-kcore: use perf with a copy of kcore
 # Copyright (c) 2014, Intel Corporation.
 #
-# This program is free software; you can redistribute it and/or modify it
-# under the terms and conditions of the GNU General Public License,
-# version 2, as published by the Free Software Foundation.
-#
-# This program is distributed in the hope it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-# more details.
 
 set -e
 
diff --git a/tools/perf/python/twatch.py b/tools/perf/python/twatch.py
index 0a29c5c3079f..ff87ccf5b708 100755
--- a/tools/perf/python/twatch.py
+++ b/tools/perf/python/twatch.py
@@ -1,17 +1,10 @@
 #! /usr/bin/python
+# SPDX-License-Identifier: GPL-2.0-only
 # -*- python -*-
 # -*- coding: utf-8 -*-
 #   twatch - Experimental use of the perf python interface
 #   Copyright (C) 2011 Arnaldo Carvalho de Melo <acme@redhat.com>
 #
-#   This application is free software; you can redistribute it and/or
-#   modify it under the terms of the GNU General Public License
-#   as published by the Free Software Foundation; version 2.
-#
-#   This application is distributed in the hope that it will be useful,
-#   but WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-#   General Public License for more details.
 
 import perf
 
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 0b8573fd9b05..79db038b56f2 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  *
  * Parts came from builtin-annotate.c, see those files for further
  * copyright notes.
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 
 #include <errno.h>
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index fb76b6b232d4..66e82bd0683e 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * auxtrace.c: AUX area trace support
  * Copyright (c) 2013-2015, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <inttypes.h>
diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h
index c69bcd9a3091..d62f60eb5df4 100644
--- a/tools/perf/util/auxtrace.h
+++ b/tools/perf/util/auxtrace.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * auxtrace.h: AUX area trace support
  * Copyright (c) 2013-2015, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef __PERF_AUXTRACE_H
diff --git a/tools/perf/util/call-path.c b/tools/perf/util/call-path.c
index 904a17052e38..c5b90300304d 100644
--- a/tools/perf/util/call-path.c
+++ b/tools/perf/util/call-path.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * call-path.h: Manipulate a tree data structure containing function call paths
  * Copyright (c) 2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <linux/rbtree.h>
diff --git a/tools/perf/util/call-path.h b/tools/perf/util/call-path.h
index 477f6d03b659..6b3229106f16 100644
--- a/tools/perf/util/call-path.h
+++ b/tools/perf/util/call-path.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * call-path.h: Manipulate a tree data structure containing function call paths
  * Copyright (c) 2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef __PERF_CALL_PATH_H
diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c
index 9097543a818b..b79e1d6839ed 100644
--- a/tools/perf/util/data-convert-bt.c
+++ b/tools/perf/util/data-convert-bt.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * CTF writing support via babeltrace.
  *
  * Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com>
  * Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de>
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 
 #include <errno.h>
diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c
index d7315a00c731..2182f552aac6 100644
--- a/tools/perf/util/db-export.c
+++ b/tools/perf/util/db-export.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * db-export.c: Support for exporting data suitable for import to a database
  * Copyright (c) 2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <errno.h>
diff --git a/tools/perf/util/db-export.h b/tools/perf/util/db-export.h
index 4e2424c89df9..e8a64028a386 100644
--- a/tools/perf/util/db-export.h
+++ b/tools/perf/util/db-export.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * db-export.h: Support for exporting data suitable for import to a database
  * Copyright (c) 2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef __PERF_DB_EXPORT_H
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 69d0fa8ab16f..a474ede17cd6 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  *
  * Parts came from builtin-{top,stat,record}.c, see those files for further
  * copyright notes.
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 #include "util.h"
 #include <api/fs/fs.h>
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index a6f572a40deb..4a5947625c5c 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  *
  * Parts came from builtin-{top,stat,record}.c, see those files for further
  * copyright notes.
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 
 #include <byteswap.h>
diff --git a/tools/perf/util/genelf.c b/tools/perf/util/genelf.c
index aafbe54fd3fa..7001247ebbd6 100644
--- a/tools/perf/util/genelf.c
+++ b/tools/perf/util/genelf.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * genelf.c
  * Copyright (C) 2014, Google, Inc
  *
  * Contributed by:
  * 	Stephane Eranian <eranian@gmail.com>
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 
 #include <sys/types.h>
diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c
index 47025bc727e1..e32dbffebb2f 100644
--- a/tools/perf/util/intel-bts.c
+++ b/tools/perf/util/intel-bts.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel-bts.c: Intel Processor Trace support
  * Copyright (c) 2013-2015, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <endian.h>
diff --git a/tools/perf/util/intel-bts.h b/tools/perf/util/intel-bts.h
index ca65e21b3e83..53d5aa02766a 100644
--- a/tools/perf/util/intel-bts.h
+++ b/tools/perf/util/intel-bts.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * intel-bts.h: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef INCLUDE__PERF_INTEL_BTS_H__
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
index f4c3c84b090f..9d189e90fbdc 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel_pt_decoder.c: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef _GNU_SOURCE
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h
index ed088d4726ba..1e8cfdc7bfab 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * intel_pt_decoder.h: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef INCLUDE__INTEL_PT_DECODER_H__
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
index 1c0e289f01e6..598f56be9f17 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel_pt_insn_decoder.c: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <stdio.h>
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h
index 37ec5627ae9b..95a1eb0141ff 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * intel_pt_insn_decoder.h: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef INCLUDE__INTEL_PT_INSN_DECODER_H__
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-log.c b/tools/perf/util/intel-pt-decoder/intel-pt-log.c
index 5e64da270f97..09feb5b07d32 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-log.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-log.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel_pt_log.c: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <stdio.h>
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-log.h b/tools/perf/util/intel-pt-decoder/intel-pt-log.h
index cc084937f701..388661f89c44 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-log.h
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-log.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * intel_pt_log.h: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef INCLUDE__INTEL_PT_LOG_H__
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
index d426761a549d..605fce537d80 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel_pt_pkt_decoder.c: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <stdio.h>
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.h b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.h
index 73ddc3a88d07..a7aefaa08588 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.h
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * intel_pt_pkt_decoder.h: Intel Processor Trace support
  * Copyright (c) 2013-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef INCLUDE__INTEL_PT_PKT_DECODER_H__
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 6d288237887b..d6f1b2a03f9b 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel_pt.c: Intel Processor Trace support
  * Copyright (c) 2013-2015, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <inttypes.h>
diff --git a/tools/perf/util/intel-pt.h b/tools/perf/util/intel-pt.h
index e13b14e5a37b..c7d6068e3a6b 100644
--- a/tools/perf/util/intel-pt.h
+++ b/tools/perf/util/intel-pt.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * intel_pt.h: Intel Processor Trace support
  * Copyright (c) 2013-2015, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef INCLUDE__PERF_INTEL_PT_H__
diff --git a/tools/perf/util/intlist.c b/tools/perf/util/intlist.c
index 89715b64a315..84e5304e151a 100644
--- a/tools/perf/util/intlist.c
+++ b/tools/perf/util/intlist.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Based on intlist.c by:
  * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com>
- *
- * Licensed under the GPLv2.
  */
 
 #include <errno.h>
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index b8d864ed4afe..699e020737d9 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2017, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 /* Manage metrics and groups of metrics from JSON files */
diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
index 868c0b0e909c..768c632b0d82 100644
--- a/tools/perf/util/mmap.c
+++ b/tools/perf/util/mmap.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2011-2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  *
  * Parts came from evlist.c builtin-{top,stat,record}.c, see those files for further
  * copyright notes.
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 
 #include <sys/mman.h>
diff --git a/tools/perf/util/rblist.c b/tools/perf/util/rblist.c
index 11e07fab20dc..f399b7ec4d8d 100644
--- a/tools/perf/util/rblist.c
+++ b/tools/perf/util/rblist.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Based on strlist.c by:
  * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com>
- *
- * Licensed under the GPLv2.
  */
 
 #include <errno.h>
diff --git a/tools/perf/util/srccode.c b/tools/perf/util/srccode.c
index fcc8630f6dff..684b155c222a 100644
--- a/tools/perf/util/srccode.c
+++ b/tools/perf/util/srccode.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Manage printing of source lines
  * Copyright (c) 2017, Intel Corporation.
  * Author: Andi Kleen
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #include "linux/list.h"
 #include <stdlib.h>
diff --git a/tools/perf/util/strlist.c b/tools/perf/util/strlist.c
index 9de5434bb49e..af45c6fd97db 100644
--- a/tools/perf/util/strlist.c
+++ b/tools/perf/util/strlist.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com>
- *
- * Licensed under the GPLv2.
  */
 
 #include "strlist.h"
diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
index f735ee038713..fab8a048d31b 100644
--- a/tools/perf/util/svghelper.c
+++ b/tools/perf/util/svghelper.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * svghelper.c - helper functions for outputting svg
  *
@@ -5,11 +6,6 @@
  *
  * Authors:
  *     Arjan van de Ven <arjan@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; version 2
- * of the License.
  */
 
 #include <inttypes.h>
diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c
index 3393d7ee9401..c2037ac533f3 100644
--- a/tools/perf/util/syscalltbl.c
+++ b/tools/perf/util/syscalltbl.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * System call table mapper
  *
  * (C) 2016 Arnaldo Carvalho de Melo <acme@redhat.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 
 #include "syscalltbl.h"
diff --git a/tools/perf/util/target.c b/tools/perf/util/target.c
index 21c4d9b23c24..3852d07c49bd 100644
--- a/tools/perf/util/target.c
+++ b/tools/perf/util/target.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Helper functions for handling target threads/cpus
  *
  * Copyright (C) 2012, LG Electronics, Namhyung Kim <namhyung.kim@lge.com>
- *
- * Released under the GPL v2.
  */
 
 #include "target.h"
diff --git a/tools/perf/util/thread-stack.c b/tools/perf/util/thread-stack.c
index 41942c2aaa18..4ba9e866b076 100644
--- a/tools/perf/util/thread-stack.c
+++ b/tools/perf/util/thread-stack.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * thread-stack.c: Synthesize a thread's stack using call / return events
  * Copyright (c) 2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #include <linux/rbtree.h>
diff --git a/tools/perf/util/thread-stack.h b/tools/perf/util/thread-stack.h
index 9c45f947f5a9..71e15d4ec533 100644
--- a/tools/perf/util/thread-stack.h
+++ b/tools/perf/util/thread-stack.h
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * thread-stack.h: Synthesize a thread's stack using call / return events
  * Copyright (c) 2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  */
 
 #ifndef __PERF_THREAD_STACK_H
diff --git a/tools/perf/util/top.c b/tools/perf/util/top.c
index 4c8da8c4435f..251bbf124fb0 100644
--- a/tools/perf/util/top.c
+++ b/tools/perf/util/top.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  *
  * Refactored from builtin-top.c, see that files for further copyright notes.
- *
- * Released under the GPL v2. (and only v2, not any later version)
  */
 
 #include "cpumap.h"
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index 8ad8e755127b..806a11b334d3 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -1,22 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2008,2009, Steven Rostedt <srostedt@redhat.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License (not later!)
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 #include "util.h"
 #include <dirent.h>
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 863955e4094e..62bc61155dd1 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1,22 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License (not later!)
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index 48d53d8e3e16..13c1cf60d1bc 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -1,22 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License (not later!)
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 #include <dirent.h>
 #include <stdio.h>
diff --git a/tools/power/acpi/Makefile b/tools/power/acpi/Makefile
index a8bf9081512b..ebd3e1a1c28e 100644
--- a/tools/power/acpi/Makefile
+++ b/tools/power/acpi/Makefile
@@ -1,12 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # tools/power/acpi/Makefile - ACPI tool Makefile
 #
 # Copyright (c) 2013, Intel Corporation
 #   Author: Lv Zheng <lv.zheng@intel.com>
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; version 2
-# of the License.
 
 include ../../scripts/Makefile.include
 
diff --git a/tools/power/acpi/Makefile.config b/tools/power/acpi/Makefile.config
index f304be71c278..0111d246d1ca 100644
--- a/tools/power/acpi/Makefile.config
+++ b/tools/power/acpi/Makefile.config
@@ -1,12 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # tools/power/acpi/Makefile.config - ACPI tool Makefile
 #
 # Copyright (c) 2015, Intel Corporation
 #   Author: Lv Zheng <lv.zheng@intel.com>
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; version 2
-# of the License.
 
 ifeq ($(srctree),)
 srctree := $(patsubst %/,%,$(dir $(shell pwd)))
diff --git a/tools/power/acpi/Makefile.rules b/tools/power/acpi/Makefile.rules
index 373738338f51..2a6c170b57cd 100644
--- a/tools/power/acpi/Makefile.rules
+++ b/tools/power/acpi/Makefile.rules
@@ -1,12 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # tools/power/acpi/Makefile.rules - ACPI tool Makefile
 #
 # Copyright (c) 2015, Intel Corporation
 #   Author: Lv Zheng <lv.zheng@intel.com>
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; version 2
-# of the License.
 
 objdir := $(OUTPUT)tools/$(TOOL)/
 toolobjs := $(addprefix $(objdir),$(TOOL_OBJS))
diff --git a/tools/power/acpi/tools/acpidbg/Makefile b/tools/power/acpi/tools/acpidbg/Makefile
index f2d06e773eb4..2ce0ee5d0deb 100644
--- a/tools/power/acpi/tools/acpidbg/Makefile
+++ b/tools/power/acpi/tools/acpidbg/Makefile
@@ -1,12 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # tools/power/acpi/tools/acpidbg/Makefile - ACPI tool Makefile
 #
 # Copyright (c) 2015, Intel Corporation
 #   Author: Lv Zheng <lv.zheng@intel.com>
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; version 2
-# of the License.
 
 include ../../Makefile.config
 
diff --git a/tools/power/acpi/tools/acpidump/Makefile b/tools/power/acpi/tools/acpidump/Makefile
index b436f8675f6a..1208a105a871 100644
--- a/tools/power/acpi/tools/acpidump/Makefile
+++ b/tools/power/acpi/tools/acpidump/Makefile
@@ -1,12 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # tools/power/acpi/tools/acpidump/Makefile - ACPI tool Makefile
 #
 # Copyright (c) 2015, Intel Corporation
 #   Author: Lv Zheng <lv.zheng@intel.com>
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; version 2
-# of the License.
 
 include ../../Makefile.config
 
diff --git a/tools/power/acpi/tools/ec/Makefile b/tools/power/acpi/tools/ec/Makefile
index 75d8a127b6ee..d0abac0ec23a 100644
--- a/tools/power/acpi/tools/ec/Makefile
+++ b/tools/power/acpi/tools/ec/Makefile
@@ -1,12 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # tools/power/acpi/tools/acpidump/Makefile - ACPI tool Makefile
 #
 # Copyright (c) 2015, Intel Corporation
 #   Author: Lv Zheng <lv.zheng@intel.com>
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; version 2
-# of the License.
 
 include ../../Makefile.config
 
diff --git a/tools/power/cpupower/lib/cpufreq.h b/tools/power/cpupower/lib/cpufreq.h
index 775738269cbf..a55f0d19215b 100644
--- a/tools/power/cpupower/lib/cpufreq.h
+++ b/tools/power/cpupower/lib/cpufreq.h
@@ -1,16 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *  cpufreq.h - definitions for libcpufreq
  *
  *  Copyright (C) 2004-2009  Dominik Brodowski <linux@dominikbrodowski.de>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, version 2 of the License.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
  */
 
 #ifndef __CPUPOWER_CPUFREQ_H__
diff --git a/tools/power/pm-graph/bootgraph.py b/tools/power/pm-graph/bootgraph.py
index 6dae57041537..3d899dd8147a 100755
--- a/tools/power/pm-graph/bootgraph.py
+++ b/tools/power/pm-graph/bootgraph.py
@@ -1,17 +1,9 @@
 #!/usr/bin/python2
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Tool for analyzing boot timing
 # Copyright (c) 2013, Intel Corporation.
 #
-# This program is free software; you can redistribute it and/or modify it
-# under the terms and conditions of the GNU General Public License,
-# version 2, as published by the Free Software Foundation.
-#
-# This program is distributed in the hope it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-# more details.
-#
 # Authors:
 #	 Todd Brandt <todd.e.brandt@linux.intel.com>
 #
diff --git a/tools/power/pm-graph/sleepgraph.py b/tools/power/pm-graph/sleepgraph.py
index 52618f3444d4..d1a88d05e976 100755
--- a/tools/power/pm-graph/sleepgraph.py
+++ b/tools/power/pm-graph/sleepgraph.py
@@ -1,17 +1,9 @@
 #!/usr/bin/python2
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Tool for analyzing suspend/resume timing
 # Copyright (c) 2013, Intel Corporation.
 #
-# This program is free software; you can redistribute it and/or modify it
-# under the terms and conditions of the GNU General Public License,
-# version 2, as published by the Free Software Foundation.
-#
-# This program is distributed in the hope it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-# more details.
-#
 # Authors:
 #	 Todd Brandt <todd.e.brandt@linux.intel.com>
 #
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index c7727be9719f..75fc4fb9901c 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -1,22 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * turbostat -- show CPU frequency and C-state residency
  * on modern Intel and AMD processors.
  *
  * Copyright (c) 2013 Intel Corporation.
  * Len Brown <len.brown@intel.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/nvdimm/dax-dev.c b/tools/testing/nvdimm/dax-dev.c
index f36e708265b8..7e5d979e73cb 100644
--- a/tools/testing/nvdimm/dax-dev.c
+++ b/tools/testing/nvdimm/dax-dev.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2016, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #include "test/nfit_test.h"
 #include <linux/mm.h>
diff --git a/tools/testing/nvdimm/pmem-dax.c b/tools/testing/nvdimm/pmem-dax.c
index 2e7fd8227969..af19c85558e7 100644
--- a/tools/testing/nvdimm/pmem-dax.c
+++ b/tools/testing/nvdimm/pmem-dax.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2014-2016, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #include "test/nfit_test.h"
 #include <linux/blkdev.h>
diff --git a/tools/testing/nvdimm/test/iomap.c b/tools/testing/nvdimm/test/iomap.c
index c6635fee27d8..280015c22598 100644
--- a/tools/testing/nvdimm/test/iomap.c
+++ b/tools/testing/nvdimm/test/iomap.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 #include <linux/memremap.h>
 #include <linux/rculist.h>
diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index bb4225cdf666..507e6f4cbb53 100644
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 #include <linux/platform_device.h>
diff --git a/tools/testing/nvdimm/test/nfit_test.h b/tools/testing/nvdimm/test/nfit_test.h
index ade14fe3837e..448d686da8b1 100644
--- a/tools/testing/nvdimm/test/nfit_test.h
+++ b/tools/testing/nvdimm/test/nfit_test.h
@@ -1,14 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 #ifndef __NFIT_TEST_H__
 #define __NFIT_TEST_H__
diff --git a/tools/testing/radix-tree/benchmark.c b/tools/testing/radix-tree/benchmark.c
index 7e195ed8e92d..523c79f22ed3 100644
--- a/tools/testing/radix-tree/benchmark.c
+++ b/tools/testing/radix-tree/benchmark.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * benchmark.c:
  * Author: Konstantin Khlebnikov <koct9i@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #include <linux/radix-tree.h>
 #include <linux/slab.h>
diff --git a/tools/testing/radix-tree/idr-test.c b/tools/testing/radix-tree/idr-test.c
index 1b63bdb7688f..698c08f851b8 100644
--- a/tools/testing/radix-tree/idr-test.c
+++ b/tools/testing/radix-tree/idr-test.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * idr-test.c: Test the IDR API
  * Copyright (c) 2016 Matthew Wilcox <willy@infradead.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #include <linux/bitmap.h>
 #include <linux/idr.h>
diff --git a/tools/testing/radix-tree/iteration_check.c b/tools/testing/radix-tree/iteration_check.c
index 238db187aa15..e9908bcb06dd 100644
--- a/tools/testing/radix-tree/iteration_check.c
+++ b/tools/testing/radix-tree/iteration_check.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * iteration_check.c: test races having to do with xarray iteration
  * Copyright (c) 2016 Intel Corporation
  * Author: Ross Zwisler <ross.zwisler@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #include <pthread.h>
 #include "test.h"
diff --git a/tools/testing/radix-tree/multiorder.c b/tools/testing/radix-tree/multiorder.c
index ff27a74d9762..9eae0fb5a67d 100644
--- a/tools/testing/radix-tree/multiorder.c
+++ b/tools/testing/radix-tree/multiorder.c
@@ -1,17 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * multiorder.c: Multi-order radix tree entry testing
  * Copyright (c) 2016 Intel Corporation
  * Author: Ross Zwisler <ross.zwisler@linux.intel.com>
  * Author: Matthew Wilcox <matthew.r.wilcox@intel.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #include <linux/radix-tree.h>
 #include <linux/slab.h>
diff --git a/tools/testing/selftests/android/ion/ion.h b/tools/testing/selftests/android/ion/ion.h
index f7021ac51335..33db23018abf 100644
--- a/tools/testing/selftests/android/ion/ion.h
+++ b/tools/testing/selftests/android/ion/ion.h
@@ -1,17 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * ion.h
  *
  * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 /* This file is copied from drivers/staging/android/uapi/ion.h
diff --git a/tools/testing/selftests/android/ion/ionapp_export.c b/tools/testing/selftests/android/ion/ionapp_export.c
index b5fa0a2dc968..063b7830d1bd 100644
--- a/tools/testing/selftests/android/ion/ionapp_export.c
+++ b/tools/testing/selftests/android/ion/ionapp_export.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * ionapp_export.c
  *
@@ -7,16 +8,6 @@
  * So, this server has to be started first before the client.
  *
  * Copyright (C) 2017 Pintu Kumar <pintu.ping@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <stdio.h>
diff --git a/tools/testing/selftests/android/ion/ionapp_import.c b/tools/testing/selftests/android/ion/ionapp_import.c
index ae2d704cfa46..54b580cb04f6 100644
--- a/tools/testing/selftests/android/ion/ionapp_import.c
+++ b/tools/testing/selftests/android/ion/ionapp_import.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * ionapp_import.c
  *
@@ -6,16 +7,6 @@
  * This acts like a client for ionapp_export.
  *
  * Copyright (C) 2017 Pintu Kumar <pintu.ping@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <stdio.h>
diff --git a/tools/testing/selftests/breakpoints/breakpoint_test_arm64.c b/tools/testing/selftests/breakpoints/breakpoint_test_arm64.c
index ab59d814341a..58ed5eeab709 100644
--- a/tools/testing/selftests/breakpoints/breakpoint_test_arm64.c
+++ b/tools/testing/selftests/breakpoints/breakpoint_test_arm64.c
@@ -1,20 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2016 Google, Inc.
  *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Original Code by Pavel Labath <labath@google.com>
  *
  * Code modified by Pratyush Anand <panand@redhat.com>
  * for testing different byte select for each access size.
- *
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/selftests/breakpoints/step_after_suspend_test.c b/tools/testing/selftests/breakpoints/step_after_suspend_test.c
index cf868b5e00f7..b3ead29c6089 100644
--- a/tools/testing/selftests/breakpoints/step_after_suspend_test.c
+++ b/tools/testing/selftests/breakpoints/step_after_suspend_test.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2016 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/selftests/net/tcp_inq.c b/tools/testing/selftests/net/tcp_inq.c
index d044b29ddabc..bd6a9c7a3e8a 100644
--- a/tools/testing/selftests/net/tcp_inq.c
+++ b/tools/testing/selftests/net/tcp_inq.c
@@ -1,19 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2018 Google Inc.
  * Author: Soheil Hassas Yeganeh (soheil@google.com)
  *
  * Simple example on how to use TCP_INQ and TCP_CM_INQ.
- *
- * License (GPLv2):
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for
- * more details.
  */
 #define _GNU_SOURCE
 
diff --git a/tools/testing/selftests/networking/timestamping/timestamping.c b/tools/testing/selftests/networking/timestamping/timestamping.c
index 5cdfd743447b..0fbed67bf4f6 100644
--- a/tools/testing/selftests/networking/timestamping/timestamping.c
+++ b/tools/testing/selftests/networking/timestamping/timestamping.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This program demonstrates how the various time stamping features in
  * the Linux kernel work. It emulates the behavior of a PTP
@@ -14,19 +15,6 @@
  *
  * Copyright (C) 2009 Intel Corporation.
  * Author: Patrick Ohly <patrick.ohly@intel.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #include <stdio.h>
diff --git a/tools/testing/selftests/networking/timestamping/txtimestamp.c b/tools/testing/selftests/networking/timestamping/txtimestamp.c
index d1bbafb16f47..7e386be47120 100644
--- a/tools/testing/selftests/networking/timestamping/txtimestamp.c
+++ b/tools/testing/selftests/networking/timestamping/txtimestamp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2014 Google Inc.
  * Author: willemb@google.com (Willem de Bruijn)
@@ -14,20 +15,6 @@
  *
  * This test requires a dummy TCP server.
  * A simple `nc6 [-u] -l -p $DESTPORT` will do
- *
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/selftests/powerpc/scripts/hmi.sh b/tools/testing/selftests/powerpc/scripts/hmi.sh
index 83fb253ae3bd..dcdb392e8427 100755
--- a/tools/testing/selftests/powerpc/scripts/hmi.sh
+++ b/tools/testing/selftests/powerpc/scripts/hmi.sh
@@ -1,15 +1,8 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright 2015, Daniel Axtens, IBM Corporation
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
 
 
 # do we have ./getscom, ./putscom?
diff --git a/tools/testing/selftests/timers/freq-step.c b/tools/testing/selftests/timers/freq-step.c
index 14a2b77fd012..8cd10662ffba 100644
--- a/tools/testing/selftests/timers/freq-step.c
+++ b/tools/testing/selftests/timers/freq-step.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This test checks the response of the system clock to frequency
  * steps made with adjtimex(). The frequency error and stability of
@@ -6,15 +7,6 @@
  * values from the second interval exceed specified limits.
  *
  * Copyright (C) Miroslav Lichvar <mlichvar@redhat.com>  2017
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 
 #include <math.h>
diff --git a/tools/testing/selftests/x86/check_cc.sh b/tools/testing/selftests/x86/check_cc.sh
index 172d3293fb7b..3e2089c8cf54 100755
--- a/tools/testing/selftests/x86/check_cc.sh
+++ b/tools/testing/selftests/x86/check_cc.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
 # check_cc.sh - Helper to test userspace compilation support
 # Copyright (c) 2015 Andrew Lutomirski
-# GPL v2
 
 CC="$1"
 TESTPROG="$2"
diff --git a/tools/testing/selftests/x86/check_initial_reg_state.c b/tools/testing/selftests/x86/check_initial_reg_state.c
index 6aaed9b85baf..3bc95f3ed585 100644
--- a/tools/testing/selftests/x86/check_initial_reg_state.c
+++ b/tools/testing/selftests/x86/check_initial_reg_state.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * check_initial_reg_state.c - check that execve sets the correct state
  * Copyright (c) 2014-2016 Andrew Lutomirski
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/selftests/x86/entry_from_vm86.c b/tools/testing/selftests/x86/entry_from_vm86.c
index ade443a88421..d1e919b0c1dc 100644
--- a/tools/testing/selftests/x86/entry_from_vm86.c
+++ b/tools/testing/selftests/x86/entry_from_vm86.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * entry_from_vm86.c - tests kernel entries from vm86 mode
  * Copyright (c) 2014-2015 Andrew Lutomirski
  *
  * This exercises a few paths that need to special-case vm86 mode.
- *
- * GPL v2.
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/selftests/x86/fsgsbase.c b/tools/testing/selftests/x86/fsgsbase.c
index f249e042b3b5..af85bd4752a5 100644
--- a/tools/testing/selftests/x86/fsgsbase.c
+++ b/tools/testing/selftests/x86/fsgsbase.c
@@ -1,7 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * fsgsbase.c, an fsgsbase test
  * Copyright (c) 2014-2016 Andy Lutomirski
- * GPL v2
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/selftests/x86/mpx-mini-test.c b/tools/testing/selftests/x86/mpx-mini-test.c
index bf1bb15b6fbe..23ddd453f362 100644
--- a/tools/testing/selftests/x86/mpx-mini-test.c
+++ b/tools/testing/selftests/x86/mpx-mini-test.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mpx-mini-test.c: routines to test Intel MPX (Memory Protection eXtentions)
  *
@@ -5,10 +6,6 @@
  * "Ren, Qiaowei" <qiaowei.ren@intel.com>
  * "Wei, Gang" <gang.wei@intel.com>
  * "Hansen, Dave" <dave.hansen@intel.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2.
  */
 
 /*
diff --git a/tools/testing/selftests/x86/sigreturn.c b/tools/testing/selftests/x86/sigreturn.c
index 4d9dc3f2fd70..3e49a7873f3e 100644
--- a/tools/testing/selftests/x86/sigreturn.c
+++ b/tools/testing/selftests/x86/sigreturn.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * sigreturn.c - tests for x86 sigreturn(2) and exit-to-userspace
  * Copyright (c) 2014-2015 Andrew Lutomirski
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
  * This is a series of tests that exercises the sigreturn(2) syscall and
  * the IRET / SYSRET paths in the kernel.
  *
diff --git a/tools/testing/selftests/x86/single_step_syscall.c b/tools/testing/selftests/x86/single_step_syscall.c
index ddfdd635de16..50ce6c3dd904 100644
--- a/tools/testing/selftests/x86/single_step_syscall.c
+++ b/tools/testing/selftests/x86/single_step_syscall.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * single_step_syscall.c - single-steps various x86 syscalls
  * Copyright (c) 2014-2015 Andrew Lutomirski
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
  * This is a very simple series of tests that makes system calls with
  * the TF flag set.  This exercises some nasty kernel code in the
  * SYSENTER case: SYSENTER does not clear TF, so SYSENTER with TF set
diff --git a/tools/testing/selftests/x86/syscall_arg_fault.c b/tools/testing/selftests/x86/syscall_arg_fault.c
index d2548401921f..4e25d38c8bbd 100644
--- a/tools/testing/selftests/x86/syscall_arg_fault.c
+++ b/tools/testing/selftests/x86/syscall_arg_fault.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * syscall_arg_fault.c - tests faults 32-bit fast syscall stack args
  * Copyright (c) 2015 Andrew Lutomirski
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/selftests/x86/syscall_nt.c b/tools/testing/selftests/x86/syscall_nt.c
index 43fcab367fb0..02309a195041 100644
--- a/tools/testing/selftests/x86/syscall_nt.c
+++ b/tools/testing/selftests/x86/syscall_nt.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * syscall_nt.c - checks syscalls with NT set
  * Copyright (c) 2014-2015 Andrew Lutomirski
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
  * Some obscure user-space code requires the ability to make system calls
  * with FLAGS.NT set.  Make sure it works.
  */
diff --git a/tools/testing/selftests/x86/sysret_rip.c b/tools/testing/selftests/x86/sysret_rip.c
index d85ec5b3671c..84d74be1d902 100644
--- a/tools/testing/selftests/x86/sysret_rip.c
+++ b/tools/testing/selftests/x86/sysret_rip.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * sigreturn.c - tests that x86 avoids Intel SYSRET pitfalls
  * Copyright (c) 2014-2016 Andrew Lutomirski
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 
 #define _GNU_SOURCE
diff --git a/tools/testing/selftests/x86/sysret_ss_attrs.c b/tools/testing/selftests/x86/sysret_ss_attrs.c
index ce42d5a64009..5f3d4fca440f 100644
--- a/tools/testing/selftests/x86/sysret_ss_attrs.c
+++ b/tools/testing/selftests/x86/sysret_ss_attrs.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * sysret_ss_attrs.c - test that syscalls return valid hidden SS attributes
  * Copyright (c) 2015 Andrew Lutomirski
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
  * On AMD CPUs, SYSRET can return with a valid SS descriptor with with
  * the hidden attributes set to an unusable state.  Make sure the kernel
  * doesn't let this happen.
diff --git a/tools/testing/selftests/x86/test_mremap_vdso.c b/tools/testing/selftests/x86/test_mremap_vdso.c
index 64f11c8d9b76..f0d876d48277 100644
--- a/tools/testing/selftests/x86/test_mremap_vdso.c
+++ b/tools/testing/selftests/x86/test_mremap_vdso.c
@@ -1,17 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * 32-bit test to check vDSO mremap.
  *
  * Copyright (c) 2016 Dmitry Safonov
  * Suggested-by: Andrew Lutomirski
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 /*
  * Can be built statically:
diff --git a/tools/testing/selftests/x86/test_syscall_vdso.c b/tools/testing/selftests/x86/test_syscall_vdso.c
index c9c3281077bc..8965c311bd65 100644
--- a/tools/testing/selftests/x86/test_syscall_vdso.c
+++ b/tools/testing/selftests/x86/test_syscall_vdso.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * 32-bit syscall ABI conformance test.
  *
  * Copyright (c) 2015 Denys Vlasenko
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 /*
  * Can be built statically:
diff --git a/tools/testing/selftests/x86/thunks.S b/tools/testing/selftests/x86/thunks.S
index ce8a995bbb17..1bb5d62c16a4 100644
--- a/tools/testing/selftests/x86/thunks.S
+++ b/tools/testing/selftests/x86/thunks.S
@@ -1,16 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * thunks.S - assembly helpers for mixed-bitness code
  * Copyright (c) 2015 Andrew Lutomirski
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
  * These are little helpers that make it easier to switch bitness on
  * the fly.
  */
diff --git a/tools/testing/selftests/x86/thunks_32.S b/tools/testing/selftests/x86/thunks_32.S
index 29b644bb9f2f..a71d92da8f46 100644
--- a/tools/testing/selftests/x86/thunks_32.S
+++ b/tools/testing/selftests/x86/thunks_32.S
@@ -1,16 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * thunks_32.S - assembly helpers for mixed-bitness code
  * Copyright (c) 2015 Denys Vlasenko
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
  * These are little helpers that make it easier to switch bitness on
  * the fly.
  */
diff --git a/tools/testing/selftests/x86/trivial_32bit_program.c b/tools/testing/selftests/x86/trivial_32bit_program.c
index fabdf0f51621..aa1f58c2f71c 100644
--- a/tools/testing/selftests/x86/trivial_32bit_program.c
+++ b/tools/testing/selftests/x86/trivial_32bit_program.c
@@ -1,7 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Trivial program to check that we have a valid 32-bit build environment.
  * Copyright (c) 2015 Andy Lutomirski
- * GPL v2
  */
 
 #ifndef __i386__
diff --git a/tools/testing/selftests/x86/trivial_64bit_program.c b/tools/testing/selftests/x86/trivial_64bit_program.c
index 05c6a41b3671..39f4b84fbf15 100644
--- a/tools/testing/selftests/x86/trivial_64bit_program.c
+++ b/tools/testing/selftests/x86/trivial_64bit_program.c
@@ -1,7 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Trivial program to check that we have a valid 64-bit build environment.
  * Copyright (c) 2015 Andy Lutomirski
- * GPL v2
  */
 
 #ifndef __x86_64__
diff --git a/tools/testing/selftests/x86/unwind_vdso.c b/tools/testing/selftests/x86/unwind_vdso.c
index 97311333700e..0075ccd65407 100644
--- a/tools/testing/selftests/x86/unwind_vdso.c
+++ b/tools/testing/selftests/x86/unwind_vdso.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * unwind_vdso.c - tests unwind info for AT_SYSINFO in the vDSO
  * Copyright (c) 2014-2015 Andrew Lutomirski
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
  * This tests __kernel_vsyscall's unwind info.
  */
 
diff --git a/tools/testing/selftests/x86/vdso_restorer.c b/tools/testing/selftests/x86/vdso_restorer.c
index cb038424a403..29a5c94c4b50 100644
--- a/tools/testing/selftests/x86/vdso_restorer.c
+++ b/tools/testing/selftests/x86/vdso_restorer.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * vdso_restorer.c - tests vDSO-based signal restore
  * Copyright (c) 2015 Andrew Lutomirski
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
  * This makes sure that sa_restorer == NULL keeps working on 32-bit
  * configurations.  Modern glibc doesn't use it under any circumstances,
  * so it's easy to overlook breakage.
diff --git a/tools/testing/vsock/control.c b/tools/testing/vsock/control.c
index 90fd47f0e422..45f328c6ff23 100644
--- a/tools/testing/vsock/control.c
+++ b/tools/testing/vsock/control.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* Control socket for client/server test execution
  *
  * Copyright (C) 2017 Red Hat, Inc.
  *
  * Author: Stefan Hajnoczi <stefanha@redhat.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; version 2
- * of the License.
  */
 
 /* The client and server may need to coordinate to avoid race conditions like
diff --git a/tools/testing/vsock/timeout.c b/tools/testing/vsock/timeout.c
index c49b3003b2db..44aee49b6cee 100644
--- a/tools/testing/vsock/timeout.c
+++ b/tools/testing/vsock/timeout.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* Timeout API for single-threaded programs that use blocking
  * syscalls (read/write/send/recv/connect/accept).
  *
  * Copyright (C) 2017 Red Hat, Inc.
  *
  * Author: Stefan Hajnoczi <stefanha@redhat.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; version 2
- * of the License.
  */
 
 /* Use the following pattern:
diff --git a/tools/testing/vsock/vsock_diag_test.c b/tools/testing/vsock/vsock_diag_test.c
index e896a4af52f4..c481101364a4 100644
--- a/tools/testing/vsock/vsock_diag_test.c
+++ b/tools/testing/vsock/vsock_diag_test.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * vsock_diag_test - vsock_diag.ko test suite
  *
  * Copyright (C) 2017 Red Hat, Inc.
  *
  * Author: Stefan Hajnoczi <stefanha@redhat.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; version 2
- * of the License.
  */
 
 #include <getopt.h>
diff --git a/tools/time/udelay_test.sh b/tools/time/udelay_test.sh
index 12d46b926917..6779d7e55d85 100755
--- a/tools/time/udelay_test.sh
+++ b/tools/time/udelay_test.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
 
 # udelay() test script
 #
@@ -8,14 +9,6 @@
 #
 # Copyright (C) 2014 Google, Inc.
 #
-# This software is licensed under the terms of the GNU General Public
-# License version 2, as published by the Free Software Foundation, and
-# may be copied, distributed, and modified under those terms.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
 
 MODULE_NAME=udelay_test
 UDELAY_PATH=/sys/kernel/debug/udelay_test
diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c
index 6f64b2b93234..58c0eab71bca 100644
--- a/tools/vm/page-types.c
+++ b/tools/vm/page-types.c
@@ -1,19 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * page-types: Tool for querying page flags
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; version 2.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should find a copy of v2 of the GNU General Public License somewhere on
- * your Linux system; if not, write to the Free Software Foundation, Inc., 59
- * Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
  * Copyright (C) 2009 Intel corporation
  *
  * Authors: Wu Fengguang <fengguang.wu@intel.com>
diff --git a/tools/vm/slabinfo-gnuplot.sh b/tools/vm/slabinfo-gnuplot.sh
index 0cf28aa6f21c..26e193ffd2a2 100644
--- a/tools/vm/slabinfo-gnuplot.sh
+++ b/tools/vm/slabinfo-gnuplot.sh
@@ -1,16 +1,9 @@
 #!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
 
 # Sergey Senozhatsky, 2015
 # sergey.senozhatsky.work@gmail.com
 #
-# This software is licensed under the terms of the GNU General Public
-# License version 2, as published by the Free Software Foundation, and
-# may be copied, distributed, and modified under those terms.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
 
 
 # This program is intended to plot a `slabinfo -X' stats, collected,