91 files changed, 91 insertions, 0 deletions
diff --git a/lib/842/842.h b/lib/842/842.h
index e0a122bc1cdb..7b1f581a2907 100644
--- a/lib/842/842.h
+++ b/lib/842/842.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __842_H__
 #define __842_H__
diff --git a/lib/842/842_debugfs.h b/lib/842/842_debugfs.h
index e7f3bffaf255..277e403e8701 100644
--- a/lib/842/842_debugfs.h
+++ b/lib/842/842_debugfs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __842_DEBUGFS_H__
 #define __842_DEBUGFS_H__
diff --git a/lib/Makefile b/lib/Makefile
index dafa79613fb4..b8f2c16fccaa 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for some libs needed in the kernel.
 #
diff --git a/lib/argv_split.c b/lib/argv_split.c
index e927ed0e18a8..5c35752a9414 100644
--- a/lib/argv_split.c
+++ b/lib/argv_split.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Helper function for splitting a string into an argv-like array.
 */
diff --git a/lib/audit.c b/lib/audit.c
index b8fb5ee81e26..5004bff928a7 100644
--- a/lib/audit.c
+++ b/lib/audit.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/audit.h>
diff --git a/lib/bcd.c b/lib/bcd.c
index 40d304efe272..7e4750b6e801 100644
--- a/lib/bcd.c
+++ b/lib/bcd.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/bcd.h>
 #include <linux/export.h>
diff --git a/lib/bug.c b/lib/bug.c
index a6a1137d06db..1e094408c893 100644
--- a/lib/bug.c
+++ b/lib/bug.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  Generic support for BUG()
diff --git a/lib/bust_spinlocks.c b/lib/bust_spinlocks.c
index f8e0e5367398..ab719495e2cb 100644
--- a/lib/bust_spinlocks.c
+++ b/lib/bust_spinlocks.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * lib/bust_spinlocks.c
 *
diff --git a/lib/check_signature.c b/lib/check_signature.c
index 6b49797980c4..43a7301da7ab 100644
--- a/lib/check_signature.c
+++ b/lib/check_signature.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/io.h>
 #include <linux/export.h>
diff --git a/lib/clz_tab.c b/lib/clz_tab.c
index 7287b4a991a7..b6118d09f244 100644
--- a/lib/clz_tab.c
+++ b/lib/clz_tab.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 const unsigned char __clz_tab[] = {
        0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5,
            5, 5, 5, 5, 5, 5, 5, 5,
diff --git a/lib/compat_audit.c b/lib/compat_audit.c
index 873f75b640ab..77eabad69b4a 100644
--- a/lib/compat_audit.c
+++ b/lib/compat_audit.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/init.h>
 #include <linux/types.h>
 #include <asm/unistd32.h>
diff --git a/lib/cpumask.c b/lib/cpumask.c
index 8b1a1bd77539..35fe142ebb5e 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/bitops.h>
diff --git a/lib/crc32defs.h b/lib/crc32defs.h
index 64cba2c3c700..cb275a28a750 100644
--- a/lib/crc32defs.h
+++ b/lib/crc32defs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
 * There are multiple 16-bit CRC polynomials in common use, but this is
 * *the* standard CRC-32 polynomial, first popularized by Ethernet.
diff --git a/lib/ctype.c b/lib/ctype.c
index c646df91a2f7..c819fe269eb2 100644
--- a/lib/ctype.c
+++ b/lib/ctype.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  linux/lib/ctype.c
 *
diff --git a/lib/debug_info.c b/lib/debug_info.c
index 2edbe27517ed..36daf753293c 100644
--- a/lib/debug_info.c
+++ b/lib/debug_info.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * This file exists solely to ensure debug information for some core
 * data structures is included in the final image even for
diff --git a/lib/dec_and_lock.c b/lib/dec_and_lock.c
index e26278576b31..347fa7ac2e8a 100644
--- a/lib/dec_and_lock.c
+++ b/lib/dec_and_lock.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/export.h>
 #include <linux/spinlock.h>
 #include <linux/atomic.h>
diff --git a/lib/decompress.c b/lib/decompress.c
index 62696dff5730..857ab1af1ef3 100644
--- a/lib/decompress.c
+++ b/lib/decompress.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * decompress.c
 *
diff --git a/lib/decompress_inflate.c b/lib/decompress_inflate.c
index 555c06bf20da..63b4b7eee138 100644
--- a/lib/decompress_inflate.c
+++ b/lib/decompress_inflate.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #ifdef STATIC
 #define PREBOOT
 /* Pre-boot environment: included */
diff --git a/lib/devres.c b/lib/devres.c
index 78eca713b1d9..5f2aedd58bc5 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/err.h>
 #include <linux/pci.h>
 #include <linux/io.h>
diff --git a/lib/div64.c b/lib/div64.c
index 7f345259c32f..58e2a404097e 100644
--- a/lib/div64.c
+++ b/lib/div64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2003 Bernardo Innocenti <bernie@develer.com>
 *
diff --git a/lib/dma-noop.c b/lib/dma-noop.c
index acc4190e2731..a10185b0c2d4 100644
--- a/lib/dma-noop.c
+++ b/lib/dma-noop.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *      lib/dma-noop.c
 *
diff --git a/lib/dma-virt.c b/lib/dma-virt.c
index 5c4f11329721..8e61a02ef9ca 100644
--- a/lib/dma-virt.c
+++ b/lib/dma-virt.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *      lib/dma-virt.c
 *
diff --git a/lib/dump_stack.c b/lib/dump_stack.c
index 625375e7f11f..c5edbedd364d 100644
--- a/lib/dump_stack.c
+++ b/lib/dump_stack.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Provide a default dump_stack() function for architectures
 * which don't implement their own.
diff --git a/lib/dynamic_queue_limits.c b/lib/dynamic_queue_limits.c
index f346715e2255..6a406fafb5d6 100644
--- a/lib/dynamic_queue_limits.c
+++ b/lib/dynamic_queue_limits.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Dynamic byte queue limits.  See include/linux/dynamic_queue_limits.h
 *
diff --git a/lib/errseq.c b/lib/errseq.c
index 7b900c2a277a..79cc66897db4 100644
--- a/lib/errseq.c
+++ b/lib/errseq.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/err.h>
 #include <linux/bug.h>
 #include <linux/atomic.h>
diff --git a/lib/flex_proportions.c b/lib/flex_proportions.c
index 2cc1f94e03a1..7852bfff50b1 100644
--- a/lib/flex_proportions.c
+++ b/lib/flex_proportions.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Floating proportions with flexible aging period
 *
diff --git a/lib/fonts/Makefile b/lib/fonts/Makefile
index e04d010cfbf5..d56f02dea83a 100644
--- a/lib/fonts/Makefile
+++ b/lib/fonts/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 # Font handling
 font-objs := fonts.o
diff --git a/lib/fonts/font_10x18.c b/lib/fonts/font_10x18.c
index 6be72bb218ee..532f0ff89a96 100644
--- a/lib/fonts/font_10x18.c
+++ b/lib/fonts/font_10x18.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /********************************
 * adapted from font_sun12x22.c *
 * by Jurriaan Kalkman 06-2005  *
diff --git a/lib/fonts/font_6x10.c b/lib/fonts/font_6x10.c
index b20620904d31..09b2cc03435b 100644
--- a/lib/fonts/font_6x10.c
+++ b/lib/fonts/font_6x10.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/font.h>
 static const unsigned char fontdata_6x10[] = {
diff --git a/lib/fonts/font_6x11.c b/lib/fonts/font_6x11.c
index 46e86e67aa6a..d7136c33f1f0 100644
--- a/lib/fonts/font_6x11.c
+++ b/lib/fonts/font_6x11.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /**********************************************/
 /*                                            */
 /*       Font file generated by rthelen       */
diff --git a/lib/fonts/font_7x14.c b/lib/fonts/font_7x14.c
index 3b7dbf9c060b..9ae5b62c8a0d 100644
--- a/lib/fonts/font_7x14.c
+++ b/lib/fonts/font_7x14.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /**************************************/
 /* this file adapted from font_8x16.c */
 /* by Jurriaan Kalkman 05-2005        */
diff --git a/lib/fonts/font_8x16.c b/lib/fonts/font_8x16.c
index 00a0c67a5c7d..34292cdfaa23 100644
--- a/lib/fonts/font_8x16.c
+++ b/lib/fonts/font_8x16.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /**********************************************/
 /*                                            */
 /*       Font file generated by cpi2fnt       */
diff --git a/lib/fonts/font_8x8.c b/lib/fonts/font_8x8.c
index 9f56efe2cee7..751becf3c521 100644
--- a/lib/fonts/font_8x8.c
+++ b/lib/fonts/font_8x8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /**********************************************/
 /*                                            */
 /*       Font file generated by cpi2fnt       */
diff --git a/lib/fonts/font_acorn_8x8.c b/lib/fonts/font_acorn_8x8.c
index 639e31ae1100..0ff0e85d4481 100644
--- a/lib/fonts/font_acorn_8x8.c
+++ b/lib/fonts/font_acorn_8x8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Acorn-like font definition, with PC graphics characters */
 #include <linux/font.h>
diff --git a/lib/fonts/font_pearl_8x8.c b/lib/fonts/font_pearl_8x8.c
index dc6ad539ca4e..b0514c0a7445 100644
--- a/lib/fonts/font_pearl_8x8.c
+++ b/lib/fonts/font_pearl_8x8.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /**********************************************/
 /*                                            */
 /*       Font file generated by cpi2fnt       */
diff --git a/lib/fonts/font_sun12x22.c b/lib/fonts/font_sun12x22.c
index d3643853c33a..955d6eee3959 100644
--- a/lib/fonts/font_sun12x22.c
+++ b/lib/fonts/font_sun12x22.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/font.h>
 #define FONTDATAMAX 11264
diff --git a/lib/fonts/font_sun8x16.c b/lib/fonts/font_sun8x16.c
index 268151325b83..03d71e53954a 100644
--- a/lib/fonts/font_sun8x16.c
+++ b/lib/fonts/font_sun8x16.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/font.h>
 #define FONTDATAMAX 4096
diff --git a/lib/gen_crc32table.c b/lib/gen_crc32table.c
index d83a372fa76f..8f26660ea10a 100644
--- a/lib/gen_crc32table.c
+++ b/lib/gen_crc32table.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <stdio.h>
 #include "../include/generated/autoconf.h"
 #include "crc32defs.h"
diff --git a/lib/hweight.c b/lib/hweight.c
index 43273a7d83cf..7660d88fd496 100644
--- a/lib/hweight.c
+++ b/lib/hweight.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/export.h>
 #include <linux/bitops.h>
 #include <asm/types.h>
diff --git a/lib/inflate.c b/lib/inflate.c
index 013a76193481..fbaf03c1748d 100644
--- a/lib/inflate.c
+++ b/lib/inflate.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #define DEBG(x)
 #define DEBG1(x)
 /* inflate.c -- Not copyrighted 1992 by Mark Adler
diff --git a/lib/int_sqrt.c b/lib/int_sqrt.c
index 1ef4cc344977..db0b5aa071fc 100644
--- a/lib/int_sqrt.c
+++ b/lib/int_sqrt.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2013 Davidlohr Bueso <davidlohr.bueso@hp.com>
 *
diff --git a/lib/iomap.c b/lib/iomap.c
index fc3dcb4b238e..541d926da95e 100644
--- a/lib/iomap.c
+++ b/lib/iomap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Implement the default iomap interfaces
 *
diff --git a/lib/iommu-common.c b/lib/iommu-common.c
index 858dc1aae478..55b00de106b5 100644
--- a/lib/iommu-common.c
+++ b/lib/iommu-common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * IOMMU mmap management and range allocation functions.
 * Based almost entirely upon the powerpc iommu allocator.
diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c
index a816f3a80625..23633c0fda4a 100644
--- a/lib/iommu-helper.c
+++ b/lib/iommu-helper.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * IOMMU helper functions for the free area management
 */
diff --git a/lib/ioremap.c b/lib/ioremap.c
index 4bb30206b942..ac7802b0a117 100644
--- a/lib/ioremap.c
+++ b/lib/ioremap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Re-map IO memory to kernel address space so that we can access it.
 * This is needed for high PCI addresses that aren't mapped in the
diff --git a/lib/irq_poll.c b/lib/irq_poll.c
index 1d6565e81030..86a709954f5a 100644
--- a/lib/irq_poll.c
+++ b/lib/irq_poll.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Functions related to interrupt-poll handling in the block layer. This
 * is similar to NAPI for network devices.
diff --git a/lib/kasprintf.c b/lib/kasprintf.c
index 7f6c506a4942..bacf7b83ccf0 100644
--- a/lib/kasprintf.c
+++ b/lib/kasprintf.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  linux/lib/kasprintf.c
 *
diff --git a/lib/kstrtox.c b/lib/kstrtox.c
index 720144075c1e..661a1e807bd1 100644
--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Convert integer string representation to an integer.
 * If an integer doesn't fit into specified type, -E is returned.
diff --git a/lib/kstrtox.h b/lib/kstrtox.h
index f13eeeaf441d..3b4637bcd254 100644
--- a/lib/kstrtox.h
+++ b/lib/kstrtox.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _LIB_KSTRTOX_H
 #define _LIB_KSTRTOX_H
diff --git a/lib/list_sort.c b/lib/list_sort.c
index 9e9acc37652f..85759928215b 100644
--- a/lib/list_sort.c
+++ b/lib/list_sort.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <linux/bug.h>
 #include <linux/compiler.h>
diff --git a/lib/locking-selftest-hardirq.h b/lib/locking-selftest-hardirq.h
index 10d4a150b259..0d144a6d6a96 100644
--- a/lib/locking-selftest-hardirq.h
+++ b/lib/locking-selftest-hardirq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef IRQ_DISABLE
 #undef IRQ_ENABLE
 #undef IRQ_ENTER
diff --git a/lib/locking-selftest-mutex.h b/lib/locking-selftest-mutex.h
index 68601b6f584b..7526c7746fb2 100644
--- a/lib/locking-selftest-mutex.h
+++ b/lib/locking-selftest-mutex.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef LOCK
 #define LOCK            ML
diff --git a/lib/locking-selftest-rlock.h b/lib/locking-selftest-rlock.h
index 6789044f4d0e..eccab18f5584 100644
--- a/lib/locking-selftest-rlock.h
+++ b/lib/locking-selftest-rlock.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef LOCK
 #define LOCK            RL
diff --git a/lib/locking-selftest-rsem.h b/lib/locking-selftest-rsem.h
index 62da886680c7..4544858f922e 100644
--- a/lib/locking-selftest-rsem.h
+++ b/lib/locking-selftest-rsem.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef LOCK
 #define LOCK            RSL
diff --git a/lib/locking-selftest-rtmutex.h b/lib/locking-selftest-rtmutex.h
index e3cb83989d16..fce8714c4170 100644
--- a/lib/locking-selftest-rtmutex.h
+++ b/lib/locking-selftest-rtmutex.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef LOCK
 #define LOCK            RTL
diff --git a/lib/locking-selftest-softirq.h b/lib/locking-selftest-softirq.h
index a83de2a04ace..6adde4867cb8 100644
--- a/lib/locking-selftest-softirq.h
+++ b/lib/locking-selftest-softirq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef IRQ_DISABLE
 #undef IRQ_ENABLE
 #undef IRQ_ENTER
diff --git a/lib/locking-selftest-spin.h b/lib/locking-selftest-spin.h
index ccd1b4b09757..6b24d699e502 100644
--- a/lib/locking-selftest-spin.h
+++ b/lib/locking-selftest-spin.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef LOCK
 #define LOCK            L
diff --git a/lib/locking-selftest-wlock.h b/lib/locking-selftest-wlock.h
index 0815322d99ed..0bc51c8cf3c5 100644
--- a/lib/locking-selftest-wlock.h
+++ b/lib/locking-selftest-wlock.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef LOCK
 #define LOCK            WL
diff --git a/lib/locking-selftest-wsem.h b/lib/locking-selftest-wsem.h
index b88c5f2dc5f0..5ef18f931c9b 100644
--- a/lib/locking-selftest-wsem.h
+++ b/lib/locking-selftest-wsem.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef LOCK
 #define LOCK            WSL
diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 2b827b8a1d8c..b5c1293ce147 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * lib/locking-selftest.c
 *
diff --git a/lib/lockref.c b/lib/lockref.c
index c4bfcb8836cd..47169ed7e964 100644
--- a/lib/lockref.c
+++ b/lib/lockref.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/export.h>
 #include <linux/lockref.h>
diff --git a/lib/lzo/lzodefs.h b/lib/lzo/lzodefs.h
index 6710b83ce72e..4edefd2f540c 100644
--- a/lib/lzo/lzodefs.h
+++ b/lib/lzo/lzodefs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
 *  lzodefs.h -- architecture, OS and compiler specific defines
 *
diff --git a/lib/memweight.c b/lib/memweight.c
index e35fc8771893..94dd72ccaa7f 100644
--- a/lib/memweight.c
+++ b/lib/memweight.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/export.h>
 #include <linux/bug.h>
 #include <linux/bitmap.h>
diff --git a/lib/mpi/Makefile b/lib/mpi/Makefile
index 019a68c90144..d5874a7f5ff9 100644
--- a/lib/mpi/Makefile
+++ b/lib/mpi/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # MPI multiprecision maths library (from gpg)
 #
diff --git a/lib/net_utils.c b/lib/net_utils.c
index 148fc6e99ef6..af525353395d 100644
--- a/lib/net_utils.c
+++ b/lib/net_utils.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/string.h>
 #include <linux/if_ether.h>
 #include <linux/ctype.h>
diff --git a/lib/nlattr.c b/lib/nlattr.c
index 927c2f19f119..3d8295c85505 100644
--- a/lib/nlattr.c
+++ b/lib/nlattr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * NETLINK      Netlink attributes
 *
diff --git a/lib/nmi_backtrace.c b/lib/nmi_backtrace.c
index 0bc0a3535a8a..46e4c749e4eb 100644
--- a/lib/nmi_backtrace.c
+++ b/lib/nmi_backtrace.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  NMI backtrace support
 *
diff --git a/lib/nodemask.c b/lib/nodemask.c
index e42a5bf44d33..3aa454c54c0d 100644
--- a/lib/nodemask.c
+++ b/lib/nodemask.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/nodemask.h>
 #include <linux/module.h>
 #include <linux/random.h>
diff --git a/lib/notifier-error-inject.h b/lib/notifier-error-inject.h
index 99b3b6fc470b..fafff5f2ac45 100644
--- a/lib/notifier-error-inject.h
+++ b/lib/notifier-error-inject.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <linux/atomic.h>
 #include <linux/debugfs.h>
 #include <linux/notifier.h>
diff --git a/lib/once.c b/lib/once.c
index 05c8604627eb..bfb7420d0de3 100644
--- a/lib/once.c
+++ b/lib/once.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/once.h>
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index 3bf4a9984f4c..c72577e472f2 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Fast batching percpu counters.
 */
diff --git a/lib/raid6/Makefile b/lib/raid6/Makefile
index a93adf6dcfb2..4add700ddfe3 100644
--- a/lib/raid6/Makefile
+++ b/lib/raid6/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_RAID6_PQ)  += raid6_pq.o
 raid6_pq-y      += algos.o recov.o tables.o int1.o int2.o int4.o \
diff --git a/lib/raid6/recov_s390xc.c b/lib/raid6/recov_s390xc.c
index b042dac826cc..179eec900cea 100644
--- a/lib/raid6/recov_s390xc.c
+++ b/lib/raid6/recov_s390xc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * RAID-6 data recovery in dual failure mode based on the XC instruction.
 *
diff --git a/lib/raid6/s390vx.uc b/lib/raid6/s390vx.uc
index 7b45191a655f..140fa8bb5c23 100644
--- a/lib/raid6/s390vx.uc
+++ b/lib/raid6/s390vx.uc
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * raid6_vx$#.c
 *
diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
index 2c7b60edea04..be1010bdc435 100644
--- a/lib/raid6/test/Makefile
+++ b/lib/raid6/test/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # This is a simple Makefile to test some of the RAID-6 code
 # from userspace.
diff --git a/lib/random32.c b/lib/random32.c
index fa594b1140e6..0a90cb0e0fb6 100644
--- a/lib/random32.c
+++ b/lib/random32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * This is a maximally equidistributed combined Tausworthe generator
 * based on code from GNU Scientific Library 1.5 (30 Jun 2004)
diff --git a/lib/rational.c b/lib/rational.c
index f0aa21c2a762..ba7443677c90 100644
--- a/lib/rational.c
+++ b/lib/rational.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * rational fractions
 *
diff --git a/lib/reciprocal_div.c b/lib/reciprocal_div.c
index 464152410c51..fcb4ce682c6f 100644
--- a/lib/reciprocal_div.c
+++ b/lib/reciprocal_div.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <asm/div64.h>
 #include <linux/reciprocal_div.h>
diff --git a/lib/refcount.c b/lib/refcount.c
index 5d0582a9480c..0eb48353abe3 100644
--- a/lib/refcount.c
+++ b/lib/refcount.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Variant of atomic_t specialized for reference counts.
 *
diff --git a/lib/seq_buf.c b/lib/seq_buf.c
index cb18469e1f49..11f2ae0f9099 100644
--- a/lib/seq_buf.c
+++ b/lib/seq_buf.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * seq_buf.c
 *
diff --git a/lib/sha1.c b/lib/sha1.c
index 5a56dfd7b99d..1d96d2c02b82 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * SHA1 routine optimized to do word accesses rather than byte accesses,
 * and to avoid unnecessary copies into the context array.
diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c
index 2fb007be0212..835cc6df2776 100644
--- a/lib/smp_processor_id.c
+++ b/lib/smp_processor_id.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * lib/smp_processor_id.c
 *
diff --git a/lib/sort.c b/lib/sort.c
index 975c6ef6fec7..d6b7a202b0b6 100644
--- a/lib/sort.c
+++ b/lib/sort.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * A fast, small, non-recursive O(nlog n) sort for the Linux kernel
 *
diff --git a/lib/string.c b/lib/string.c
index 9921dc202db4..5e8d410a93df 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  linux/lib/string.c
 *
diff --git a/lib/strncpy_from_user.c b/lib/strncpy_from_user.c
index 7e35fc450c5b..b53e1b5d80f4 100644
--- a/lib/strncpy_from_user.c
+++ b/lib/strncpy_from_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/compiler.h>
 #include <linux/export.h>
 #include <linux/kasan-checks.h>
diff --git a/lib/strnlen_user.c b/lib/strnlen_user.c
index a5f567747ced..60d0bbda8f5e 100644
--- a/lib/strnlen_user.c
+++ b/lib/strnlen_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/uaccess.h>
diff --git a/lib/syscall.c b/lib/syscall.c
index 2c6cd1b5c3ea..1a7077f20eae 100644
--- a/lib/syscall.c
+++ b/lib/syscall.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/ptrace.h>
 #include <linux/sched.h>
 #include <linux/sched/task_stack.h>
diff --git a/lib/ubsan.h b/lib/ubsan.h
index b2d18d4a53f5..88f23557edbe 100644
--- a/lib/ubsan.h
+++ b/lib/ubsan.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _LIB_UBSAN_H
 #define _LIB_UBSAN_H
diff --git a/lib/ucs2_string.c b/lib/ucs2_string.c
index ae8d2491133c..d7e06b28de38 100644
--- a/lib/ucs2_string.c
+++ b/lib/ucs2_string.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/ucs2_string.h>
 #include <linux/module.h>
diff --git a/lib/usercopy.c b/lib/usercopy.c
index f5d9f08ee032..15e2e6fb060e 100644
--- a/lib/usercopy.c
+++ b/lib/usercopy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/uaccess.h>
 /* out-of-line parts */
diff --git a/lib/win_minmax.c b/lib/win_minmax.c
index c8420d404926..6bdc1cd15f76 100644
--- a/lib/win_minmax.c
+++ b/lib/win_minmax.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /**
 * lib/minmax.c: windowed min/max tracker
 *