4 files changed, 4 insertions, 36 deletions
diff --git a/tools/include/asm-generic/barrier.h b/tools/include/asm-generic/barrier.h
index 52278d880a61..6ef36e920ea8 100644
--- a/tools/include/asm-generic/barrier.h
+++ b/tools/include/asm-generic/barrier.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * Copied from the kernel sources to tools/perf/:
  *
@@ -8,11 +9,6 @@
  *
  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
  */
 #ifndef __TOOLS_LINUX_ASM_GENERIC_BARRIER_H
 #define __TOOLS_LINUX_ASM_GENERIC_BARRIER_H
diff --git a/tools/include/linux/log2.h b/tools/include/linux/log2.h
index 0325cefc2220..e20a67d538b8 100644
--- a/tools/include/linux/log2.h
+++ b/tools/include/linux/log2.h
@@ -1,12 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /* Integer base 2 logarithm calculation
  *
  * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@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; either version
- * 2 of the License, or (at your option) any later version.
  */
 
 #ifndef _TOOLS_LINUX_LOG2_H
diff --git a/tools/include/linux/rbtree.h b/tools/include/linux/rbtree.h
index 8e9ed4786269..d83763a5327c 100644
--- a/tools/include/linux/rbtree.h
+++ b/tools/include/linux/rbtree.h
@@ -1,20 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
   Red Black Trees
   (C) 1999  Andrea Arcangeli <andrea@suse.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; either version 2 of the License, or
-  (at your option) any later version.
-
-  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
 
   linux/include/linux/rbtree.h
 
diff --git a/tools/include/linux/rbtree_augmented.h b/tools/include/linux/rbtree_augmented.h
index d008e1404580..ddd01006ece5 100644
--- a/tools/include/linux/rbtree_augmented.h
+++ b/tools/include/linux/rbtree_augmented.h
@@ -1,22 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
   Red Black Trees
   (C) 1999  Andrea Arcangeli <andrea@suse.de>
   (C) 2002  David Woodhouse <dwmw2@infradead.org>
   (C) 2012  Michel Lespinasse <walken@google.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; either version 2 of the License, or
-  (at your option) any later version.
-
-  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
 
   tools/linux/include/linux/rbtree_augmented.h