treewide: Add SPDX license identifier Add SPDX license identifiers to all files which: - Have no license information of any form - Have EXPORT_.*_SYMBOL_GPL inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c
index 86870f4..71778bb 100644
--- a/arch/arm/kernel/stacktrace.c
+++ b/arch/arm/kernel/stacktrace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/export.h>
 #include <linux/sched.h>
 #include <linux/sched/debug.h>

diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 5bf9443..d42b933 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/arch/arm/mm/ioremap.c
  *

diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 7d67c70..24ecf8d 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/arch/arm/mm/nommu.c
  *

diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 17e4789..1e57692 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <xen/xen.h>
 #include <xen/events.h>
 #include <xen/grant_table.h>

diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
index e1d44b9..d33b77e9 100644
--- a/arch/arm/xen/mm.c
+++ b/arch/arm/xen/mm.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/cpu.h>
 #include <linux/dma-mapping.h>
 #include <linux/gfp.h>

diff --git a/arch/arm/xen/p2m.c b/arch/arm/xen/p2m.c
index da2a704..e52950a 100644
--- a/arch/arm/xen/p2m.c
+++ b/arch/arm/xen/p2m.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/memblock.h>
 #include <linux/gfp.h>
 #include <linux/export.h>

diff --git a/arch/ia64/kernel/esi_stub.S b/arch/ia64/kernel/esi_stub.S
index 2c369bf..821e68d 100644
--- a/arch/ia64/kernel/esi_stub.S
+++ b/arch/ia64/kernel/esi_stub.S

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * ESI call stub.
  *

diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 5cabb3f..6a52d76 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * File:	mca.c
  * Purpose:	Generic MCA handling layer

diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 7a969f4..58a6337 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This file implements the perfmon-2 subsystem which is used
  * to program the IA-64 Performance Monitoring Unit (PMU).

diff --git a/arch/ia64/kernel/sal.c b/arch/ia64/kernel/sal.c
index 0464173..9b2331a 100644
--- a/arch/ia64/kernel/sal.c
+++ b/arch/ia64/kernel/sal.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * System Abstraction Layer (SAL) interface routines.
  *

diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 7f706d4..133b633 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * SMP Support
  *

diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 51ec944..d0474a0 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * SMP boot-related support
  *

diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index 9025699..4ecd81b 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/arch/ia64/kernel/time.c
  *

diff --git a/arch/ia64/lib/flush.S b/arch/ia64/lib/flush.S
index 9a5a2f9..8573d59 100644
--- a/arch/ia64/lib/flush.S
+++ b/arch/ia64/lib/flush.S

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Cache flushing routines.
  *

diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index 5158bd2..0714df1 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * TLB support routines.
  *

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 196a0dd..e308196 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * pci.c - Low-Level PCI Access in IA-64
  *

diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index 3a8b47f..c2697a4 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/arch/m68k/kernel/time.c
  *

diff --git a/arch/m68k/mac/psc.c b/arch/m68k/mac/psc.c
index 8d547df..0d0965b 100644
--- a/arch/m68k/mac/psc.c
+++ b/arch/m68k/mac/psc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *	Apple Peripheral System Controller (PSC)
  *

diff --git a/arch/mips/alchemy/common/usb.c b/arch/mips/alchemy/common/usb.c
index 634edd3..5d61854 100644
--- a/arch/mips/alchemy/common/usb.c
+++ b/arch/mips/alchemy/common/usb.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * USB block power/access management abstraction.
  *

diff --git a/arch/mips/alchemy/common/vss.c b/arch/mips/alchemy/common/vss.c
index a7bd32e..3d0d468 100644
--- a/arch/mips/alchemy/common/vss.c
+++ b/arch/mips/alchemy/common/vss.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Au1300 media block power gating (VSS)
  *

diff --git a/arch/mips/alchemy/devboards/bcsr.c b/arch/mips/alchemy/devboards/bcsr.c
index c1a2daa..8df0ccd 100644
--- a/arch/mips/alchemy/devboards/bcsr.c
+++ b/arch/mips/alchemy/devboards/bcsr.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * bcsr.h -- Db1xxx/Pb1xxx Devboard CPLD registers ("BCSR") abstraction.
  *

diff --git a/arch/mips/kernel/stacktrace.c b/arch/mips/kernel/stacktrace.c
index 7c7c902..f2e7209 100644
--- a/arch/mips/kernel/stacktrace.c
+++ b/arch/mips/kernel/stacktrace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Stack trace management functions
  *

diff --git a/arch/mips/sgi-ip22/ip22-gio.c b/arch/mips/sgi-ip22/ip22-gio.c
index b225033..282b47c 100644
--- a/arch/mips/sgi-ip22/ip22-gio.c
+++ b/arch/mips/sgi-ip22/ip22-gio.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/init.h>

diff --git a/arch/parisc/kernel/stacktrace.c b/arch/parisc/kernel/stacktrace.c
index 6f0b9c8..34bf6d6 100644
--- a/arch/parisc/kernel/stacktrace.c
+++ b/arch/parisc/kernel/stacktrace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Stack trace management functions
  *

diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 0417fda..50942a1 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Common pmac/prep/chrp pci routines. -- Cort
  */

diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 3fb9f64..94517e4 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Common prep/pmac/chrp boot and setup code.
  */

diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 7a17088..e2147d7 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/device.h>
 #include <linux/cpu.h>
 #include <linux/smp.h>

diff --git a/arch/powerpc/platforms/cell/cbe_regs.c b/arch/powerpc/platforms/cell/cbe_regs.c
index 27ee65b..0be212a 100644
--- a/arch/powerpc/platforms/cell/cbe_regs.c
+++ b/arch/powerpc/platforms/cell/cbe_regs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * cbe_regs.c
  *

diff --git a/arch/powerpc/platforms/cell/spu_callbacks.c b/arch/powerpc/platforms/cell/spu_callbacks.c
index b5f35cb..cbee366 100644
--- a/arch/powerpc/platforms/cell/spu_callbacks.c
+++ b/arch/powerpc/platforms/cell/spu_callbacks.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * System call callback functions for SPUs
  */

diff --git a/arch/powerpc/platforms/powermac/backlight.c b/arch/powerpc/platforms/powermac/backlight.c
index 6b5dccca..32224cb 100644
--- a/arch/powerpc/platforms/powermac/backlight.c
+++ b/arch/powerpc/platforms/powermac/backlight.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Miscellaneous procedures for dealing with the PowerMac hardware.
  * Contains support for the backlight.

diff --git a/arch/powerpc/platforms/powermac/pfunc_core.c b/arch/powerpc/platforms/powermac/pfunc_core.c
index e0462fe..94df0a9 100644
--- a/arch/powerpc/platforms/powermac/pfunc_core.c
+++ b/arch/powerpc/platforms/powermac/pfunc_core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  * FIXME: Properly make this race free with refcounting etc...

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 5aeb4d7..13c6a6b 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/arch/sh/mm/init.c
  *

diff --git a/arch/sparc/kernel/helpers.S b/arch/sparc/kernel/helpers.S
index e4e5b83..9b3f747 100644
--- a/arch/sparc/kernel/helpers.S
+++ b/arch/sparc/kernel/helpers.S

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 	.align	32
 	.globl	__flushw_user
 	.type	__flushw_user,#function

diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index 8babbeb..060fff9 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* Pseudo NMI support on sparc64 systems.
  *
  * Copyright (C) 2009 David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc/kernel/of_device_common.c b/arch/sparc/kernel/of_device_common.c
index b186b7f..b32cc56 100644
--- a/arch/sparc/kernel/of_device_common.c
+++ b/arch/sparc/kernel/of_device_common.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/of.h>

diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c
index eb978c7..c0886b4 100644
--- a/arch/sparc/kernel/pcr.c
+++ b/arch/sparc/kernel/pcr.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* pcr.c: Generic sparc64 performance counter infrastructure.
  *
  * Copyright (C) 2009 David S. Miller (davem@davemloft.net)

diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index e1d965e..c9d41a9 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* ptrace.c: Sparc process tracing support.
  *
  * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)

diff --git a/arch/sparc/kernel/stacktrace.c b/arch/sparc/kernel/stacktrace.c
index dd654e6..d8eb1d1 100644
--- a/arch/sparc/kernel/stacktrace.c
+++ b/arch/sparc/kernel/stacktrace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/sched.h>
 #include <linux/sched/debug.h>
 #include <linux/stacktrace.h>

diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index 0cd02a6..04aa588 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* arch/sparc64/kernel/traps.c
  *
  * Copyright (C) 1995,1997,2008,2009,2012 David S. Miller (davem@davemloft.net)

diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c
index f15441b..e7d35f6 100644
--- a/arch/x86/events/amd/core.c
+++ b/arch/x86/events/amd/core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/perf_event.h>
 #include <linux/export.h>
 #include <linux/types.h>

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 546d13e..a5436ce 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Per core/cpu state
  *

diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index cb6e076..a5e5484 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2005 Intel Corporation
  * 	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 7b9b49d..390596b 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #define pr_fmt(fmt) "SMP alternatives: " fmt
 
 #include <linux/module.h>

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index ab6af77..177aa8e 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *	Local APIC handling, local APIC timers
  *

diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index fb6a64b..80a405c 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/export.h>
 #include <linux/bitops.h>
 #include <linux/elf.h>

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index d7f55ad..2c57fff 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* cpu_feature_enabled() cannot be used this early */
 #define USE_EARLY_PGTABLE_L5
 

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 5112a50..282916f 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Machine check handler.
  *

diff --git a/arch/x86/kernel/cpu/mce/dev-mcelog.c b/arch/x86/kernel/cpu/mce/dev-mcelog.c
index 9690ec5..7c8958d 100644
--- a/arch/x86/kernel/cpu/mce/dev-mcelog.c
+++ b/arch/x86/kernel/cpu/mce/dev-mcelog.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * /dev/mcelog driver
  *

diff --git a/arch/x86/kernel/cpu/mce/therm_throt.c b/arch/x86/kernel/cpu/mce/therm_throt.c
index 10a3b05..6e2becf 100644
--- a/arch/x86/kernel/cpu/mce/therm_throt.c
+++ b/arch/x86/kernel/cpu/mce/therm_throt.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Thermal throttle event support code (such as syslog messaging and rate
  * limiting) that was factored out from x86_64 (mce_intel.c) and i386 (p4.c).

diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c
index 86e277f..9356c1c9 100644
--- a/arch/x86/kernel/cpu/mtrr/generic.c
+++ b/arch/x86/kernel/cpu/mtrr/generic.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This only handles 32bit MTRR on 32bit hosts. This is strictly wrong
  * because MTRRs can span up to 40 bits (36bits on most modern x86)

diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index a96ca85..576b2e1 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Architecture specific (i386/x86_64) functions for kexec based crash dumps.
  *

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 76dd605..8f32e70 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Low level x86 E820 memory map handling functions.
  *

diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index ce243f76..466fca6 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Copyright (C) 1994 Linus Torvalds
  *

diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index 20d8fa7..ef0030e 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * x86 FPU boot time init code:
  */

diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 9c459fd..3c36dd1 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * xsave/xrstor support.
  *

diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index fb32925..a0573f2 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/clocksource.h>
 #include <linux/clockchips.h>
 #include <linux/interrupt.h>

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 59b5f2e..9b68b5b 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Common interrupt code for 32 and 64 bit
  */

diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index 05b0989..4df7705 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Copyright (C) 1991, 1992  Linus Torvalds
  *  Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index f8e1af3..250e4c4 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Copyright (C) 1995  Linus Torvalds
  *

diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 4b8ee05..a166c96 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* By Ross Biro 1/23/92 */
 /*
  * Pentium III FXSR, SSE support

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 905dae88..08a5f4a 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Copyright (C) 1995  Linus Torvalds
  *

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 356dfc5..0b29e58 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/kernel.h>

diff --git a/arch/x86/kernel/unwind_frame.c b/arch/x86/kernel/unwind_frame.c
index 9b9fd482..6106760 100644
--- a/arch/x86/kernel/unwind_frame.c
+++ b/arch/x86/kernel/unwind_frame.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/sched.h>
 #include <linux/sched/task.h>
 #include <linux/sched/task_stack.h>

diff --git a/arch/x86/kernel/unwind_guess.c b/arch/x86/kernel/unwind_guess.c
index 4f0e17b..c49f10f 100644
--- a/arch/x86/kernel/unwind_guess.c
+++ b/arch/x86/kernel/unwind_guess.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/sched.h>
 #include <linux/ftrace.h>
 #include <asm/ptrace.h>

diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c
index 89be1be1..33b66b5 100644
--- a/arch/x86/kernel/unwind_orc.c
+++ b/arch/x86/kernel/unwind_orc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/module.h>
 #include <linux/sort.h>
 #include <asm/ptrace.h>

diff --git a/arch/x86/lib/clear_page_64.S b/arch/x86/lib/clear_page_64.S
index 88acd34..75a5a45 100644
--- a/arch/x86/lib/clear_page_64.S
+++ b/arch/x86/lib/clear_page_64.S

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 #include <linux/linkage.h>
 #include <asm/export.h>
 

diff --git a/arch/x86/lib/cpu.c b/arch/x86/lib/cpu.c
index 2dd1fe13..04967cd 100644
--- a/arch/x86/lib/cpu.c
+++ b/arch/x86/lib/cpu.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/types.h>
 #include <linux/export.h>
 

diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S
index 9d05572..9274866 100644
--- a/arch/x86/lib/memcpy_64.S
+++ b/arch/x86/lib/memcpy_64.S

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /* Copyright 2002 Andi Kleen */
 
 #include <linux/linkage.h>

diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c
index 9952a01..e0e006f 100644
--- a/arch/x86/lib/usercopy_64.c
+++ b/arch/x86/lib/usercopy_64.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* 
  * User address space access functions.
  *

diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c
index b0a2de8..4d75bc6 100644
--- a/arch/x86/mm/extable.c
+++ b/arch/x86/mm/extable.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/extable.h>
 #include <linux/uaccess.h>
 #include <linux/sched/debug.h>

diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
index 0d4bdcb..0a1898b 100644
--- a/arch/x86/mm/highmem_32.c
+++ b/arch/x86/mm/highmem_32.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/highmem.h>
 #include <linux/export.h>
 #include <linux/swap.h> /* for totalram_pages */

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 075e568..f265a43 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  *  Copyright (C) 1995  Linus Torvalds

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 62fc457..693aaf2 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/arch/x86_64/mm/init.c
  *

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index dd73d5d..4b6423e 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * 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/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index dfb6c4d..e6dad60 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* Common code for 32 and 64-bit NUMA */
 #include <linux/acpi.h>
 #include <linux/kernel.h>

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index daf4d64..6a9a77a 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2002 Andi Kleen, SuSE Labs.
  * Thanks to Ben LaHaise for precious feedback.

diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 4fe956a..d9fbd4f 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Handle caching attributes in page tables (PAT)
  *

diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 7f61431..91f6db9 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/init.h>
 
 #include <linux/mm.h>

diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index d4ec117..9acab6a 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *	Low-Level PCI Support for PC
  *

diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c
index dfbe6ac..467311b 100644
--- a/arch/x86/pci/legacy.c
+++ b/arch/x86/pci/legacy.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * legacy.c - traditional, old school PCI bus probing
  */

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 9112d1c..91220cc 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Xen PCI - handle PCI (INTx) and MSI infrastructure calls for PV, HVM and
  * initial domain support. We also handle the DSDT _PRT callbacks for GSI's

diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c
index a25a9fd..feb7777 100644
--- a/arch/x86/platform/efi/quirks.c
+++ b/arch/x86/platform/efi/quirks.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #define pr_fmt(fmt) "efi: " fmt
 
 #include <linux/init.h>

diff --git a/arch/x86/platform/intel-quark/imr.c b/arch/x86/platform/intel-quark/imr.c
index 49828c2..b542037 100644
--- a/arch/x86/platform/intel-quark/imr.c
+++ b/arch/x86/platform/intel-quark/imr.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /**
  * imr.c -- Intel Isolated Memory Region driver
  *

diff --git a/arch/x86/platform/olpc/olpc_ofw.c b/arch/x86/platform/olpc/olpc_ofw.c
index f1aab8c..20a0645 100644
--- a/arch/x86/platform/olpc/olpc_ofw.c
+++ b/arch/x86/platform/olpc/olpc_ofw.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/spinlock_types.h>

diff --git a/drivers/acpi/debugfs.c b/drivers/acpi/debugfs.c
index 68bb305..d5ecea3 100644
--- a/drivers/acpi/debugfs.c
+++ b/drivers/acpi/debugfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * debugfs.c - ACPI debugfs interface to userspace.
  */

diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 8c0a54d..f32beb7d 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2005 Intel Corporation
  * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 566270d..0e28270 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * scan.c - support for transforming the ACPI namespace into individual objects
  */

diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 97a14fe..224e348 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * libata-acpi.c
  * Provides ACPI support for PATA/SATA.

diff --git a/drivers/edac/debugfs.c b/drivers/edac/debugfs.c
index 0a92772..6b8e484 100644
--- a/drivers/edac/debugfs.c
+++ b/drivers/edac/debugfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include "edac_module.h"
 
 static struct dentry *edac_debugfs;

diff --git a/drivers/edac/wq.c b/drivers/edac/wq.c
index 2a9a11a..d021d28 100644
--- a/drivers/edac/wq.c
+++ b/drivers/edac/wq.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include "edac_module.h"
 
 static struct workqueue_struct *wq;

diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index fae2d5c..35ed56b 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/init.h>

diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
index f2f71d7..6becf63 100644
--- a/drivers/gpu/drm/drm_of.c
+++ b/drivers/gpu/drm/drm_of.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/component.h>
 #include <linux/export.h>
 #include <linux/list.h>

diff --git a/drivers/gpu/drm/pl111/pl111_versatile.c b/drivers/gpu/drm/pl111/pl111_versatile.c
index 1c318ad..38f4ee0 100644
--- a/drivers/gpu/drm/pl111/pl111_versatile.c
+++ b/drivers/gpu/drm/pl111/pl111_versatile.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/amba/clcd-regs.h>
 #include <linux/device.h>
 #include <linux/of.h>

diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 33a28cd..80bc3bf 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * ATAPI support.
  */

diff --git a/drivers/ide/ide-dma-sff.c b/drivers/ide/ide-dma-sff.c
index 289d16c..b7c2c0b 100644
--- a/drivers/ide/ide-dma-sff.c
+++ b/drivers/ide/ide-dma-sff.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/export.h>

diff --git a/drivers/ide/ide-eh.c b/drivers/ide/ide-eh.c
index e1323e0..2f37821 100644
--- a/drivers/ide/ide-eh.c
+++ b/drivers/ide/ide-eh.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 
 #include <linux/kernel.h>
 #include <linux/export.h>

diff --git a/drivers/ide/ide-io-std.c b/drivers/ide/ide-io-std.c
index 1976397..18c20a7 100644
--- a/drivers/ide/ide-io-std.c
+++ b/drivers/ide/ide-io-std.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 
 #include <linux/kernel.h>
 #include <linux/export.h>

diff --git a/drivers/ide/ide-ioctls.c b/drivers/ide/ide-ioctls.c
index af5119a..d48c170 100644
--- a/drivers/ide/ide-ioctls.c
+++ b/drivers/ide/ide-ioctls.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * IDE ioctls handling.
  */

diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index d55e9eb..d1445d7 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Copyright (C) 2000-2002	Andre Hedrick <andre@linux-ide.org>
  *  Copyright (C) 2003		Red Hat

diff --git a/drivers/ide/ide-legacy.c b/drivers/ide/ide-legacy.c
index 30fe363..be65b41 100644
--- a/drivers/ide/ide-legacy.c
+++ b/drivers/ide/ide-legacy.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/ide.h>

diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 78cb79e..7b9f655 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/kernel.h>

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 4ad8249..e867129 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Copyright (C) 1994-1998   Linus Torvalds & authors (see below)
  *  Copyright (C) 2005, 2007  Bartlomiej Zolnierkiewicz

diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index a5dc135..0363d73 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Copyright (C) 1997-1998	Mark Lord
  *  Copyright (C) 2003		Red Hat

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 17b2e37..aab6a10 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Copyright (C) 2000-2002	   Michael Cornwell <cornwell@acm.org>
  *  Copyright (C) 2000-2002	   Andre Hedrick <andre@linux-ide.org>

diff --git a/drivers/ide/ide-xfer-mode.c b/drivers/ide/ide-xfer-mode.c
index eb42188..0b9709b 100644
--- a/drivers/ide/ide-xfer-mode.c
+++ b/drivers/ide/ide-xfer-mode.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/kernel.h>

diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 81cf290..83f36f6 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/cpumask.h>
 #include <linux/kernel.h>
 #include <linux/string.h>

diff --git a/drivers/mcb/mcb-parse.c b/drivers/mcb/mcb-parse.c
index 7369bda..3b69e6a 100644
--- a/drivers/mcb/mcb-parse.c
+++ b/drivers/mcb/mcb-parse.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/types.h>
 #include <linux/ioport.h>
 #include <linux/slab.h>

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 3a62a46..c01d411 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * bitmap.c two-level bitmap (C) Peter T. Breuer (ptb@ot.uc3m.es) 2003
  *

diff --git a/drivers/media/common/saa7146/saa7146_hlp.c b/drivers/media/common/saa7146/saa7146_hlp.c
index 6ebcbc6..6c9946a 100644
--- a/drivers/media/common/saa7146/saa7146_hlp.c
+++ b/drivers/media/common/saa7146/saa7146_hlp.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/kernel.h>

diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index 73dac1d..e1eaf113 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
  *	Separated from fs stuff by Arnd Bergmann <arnd@arndb.de>

diff --git a/drivers/misc/atmel_tclib.c b/drivers/misc/atmel_tclib.c
index ac24a4b..58d5a9a 100644
--- a/drivers/misc/atmel_tclib.c
+++ b/drivers/misc/atmel_tclib.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/atmel_tc.h>
 #include <linux/clk.h>
 #include <linux/err.h>

diff --git a/drivers/mmc/host/sdhci-pci-data.c b/drivers/mmc/host/sdhci-pci-data.c
index a611217..18638fb 100644
--- a/drivers/mmc/host/sdhci-pci-data.c
+++ b/drivers/mmc/host/sdhci-pci-data.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/module.h>
 #include <linux/mmc/sdhci-pci-data.h>
 

diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
index abe13df..b9d4145 100644
--- a/drivers/net/phy/phy-c45.c
+++ b/drivers/net/phy/phy-c45.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Clause 45 PHY support
  */

diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index fef701b..e9c1879 100644
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/export.h>
 #include <linux/kref.h>
 #include <linux/list.h>

diff --git a/drivers/net/wireless/marvell/libertas/cmd.c b/drivers/net/wireless/marvell/libertas/cmd.c
index c1f4229..a4d9dd7 100644
--- a/drivers/net/wireless/marvell/libertas/cmd.c
+++ b/drivers/net/wireless/marvell/libertas/cmd.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This file contains the handling of command.
  * It prepares command and sends it to firmware when it is ready.

diff --git a/drivers/net/wireless/marvell/libertas/firmware.c b/drivers/net/wireless/marvell/libertas/firmware.c
index 51b92b5..69029c5 100644
--- a/drivers/net/wireless/marvell/libertas/firmware.c
+++ b/drivers/net/wireless/marvell/libertas/firmware.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Firmware loading and handling functions.
  */

diff --git a/drivers/net/wireless/marvell/libertas/rx.c b/drivers/net/wireless/marvell/libertas/rx.c
index 7586ff6..58a1fc4 100644
--- a/drivers/net/wireless/marvell/libertas/rx.c
+++ b/drivers/net/wireless/marvell/libertas/rx.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This file contains the handling of RX in wlan driver.
  */

diff --git a/drivers/net/wireless/marvell/libertas/tx.c b/drivers/net/wireless/marvell/libertas/tx.c
index 723ba5f..aeb4817 100644
--- a/drivers/net/wireless/marvell/libertas/tx.c
+++ b/drivers/net/wireless/marvell/libertas/tx.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This file contains the handling of TX in wlan driver.
  */

diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index eec75b9..2d06b80 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #undef DEBUG
 
 /*

diff --git a/drivers/ras/debugfs.c b/drivers/ras/debugfs.c
index 5016030..9c1b717 100644
--- a/drivers/ras/debugfs.c
+++ b/drivers/ras/debugfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/debugfs.h>
 
 struct dentry *ras_debugfs_dir;

diff --git a/drivers/rtc/rtc-mc146818-lib.c b/drivers/rtc/rtc-mc146818-lib.c
index 18a6f15..2ecd875 100644
--- a/drivers/rtc/rtc-mc146818-lib.c
+++ b/drivers/rtc/rtc-mc146818-lib.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/bcd.h>
 #include <linux/delay.h>
 #include <linux/export.h>

diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index eaf329d..ff0d8c6 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  hosts.c Copyright (C) 1992 Drew Eckhardt
  *          Copyright (C) 1993, 1994, 1995 Eric Youngdale

diff --git a/drivers/scsi/libsas/sas_task.c b/drivers/scsi/libsas/sas_task.c
index c3b9bef..1ded7d8 100644
--- a/drivers/scsi/libsas/sas_task.c
+++ b/drivers/scsi/libsas/sas_task.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 
 #include "sas_internal.h"
 

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 8e96805..bfa569f 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  scsi_error.c Copyright (C) 1997 Eric Youngdale
  *

diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c
index 840d96f..57bcd05 100644
--- a/drivers/scsi/scsi_ioctl.c
+++ b/drivers/scsi/scsi_ioctl.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Changes:
  * Arnaldo Carvalho de Melo <acme@conectiva.com.br> 08/23/2000

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 0916bd6d..65d0a10 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 1999 Eric Youngdale
  * Copyright (C) 2014 Christoph Hellwig

diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index 7639df9..48ee680 100644
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *	scsi_pm.c	Copyright (C) 2010 Alan Stern
  *

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 3b119ca..dbb206c 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * scsi_sysfs.c
  *

diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
index 45ad925..ff886e9 100644
--- a/drivers/video/console/dummycon.c
+++ b/drivers/video/console/dummycon.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/drivers/video/dummycon.c -- A dummy console driver
  *

diff --git a/drivers/video/fbdev/via/via-core.c b/drivers/video/fbdev/via/via-core.c
index b041eb2..e2b2062 100644
--- a/drivers/video/fbdev/via/via-core.c
+++ b/drivers/video/fbdev/via/via-core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
  * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.

diff --git a/drivers/video/logo/logo.c b/drivers/video/logo/logo.c
index 36aa050..141f15a 100644
--- a/drivers/video/logo/logo.c
+++ b/drivers/video/logo/logo.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 
 /*
  *  Linux logo to be displayed on boot

diff --git a/drivers/xen/dbgp.c b/drivers/xen/dbgp.c
index 8145a59..cfb5de3 100644
--- a/drivers/xen/dbgp.c
+++ b/drivers/xen/dbgp.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/pci.h>
 #include <linux/usb.h>
 #include <linux/usb/ehci_def.h>

diff --git a/drivers/xen/efi.c b/drivers/xen/efi.c
index 9243a90..89d60f8 100644
--- a/drivers/xen/efi.c
+++ b/drivers/xen/efi.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * EFI support for Xen.
  *

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 084e458..ff9b510 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Xen event channels
  *

diff --git a/drivers/xen/features.c b/drivers/xen/features.c
index d7d34fd..25c053b 100644
--- a/drivers/xen/features.c
+++ b/drivers/xen/features.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /******************************************************************************
  * features.c
  *

diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 5bb01a6..cd04668 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Handle extern requests for shutdown, reboot and sysrq
  */

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 91262c34..c2b8663 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  fs/anon_inodes.c
  *

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 0f7552a..e6886c9 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/block_dev.c
  *

diff --git a/fs/buffer.c b/fs/buffer.c
index 0faa41fb..e450c55 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/buffer.c
  *

diff --git a/fs/crypto/hooks.c b/fs/crypto/hooks.c
index 2dc2254..bd525f7 100644
--- a/fs/crypto/hooks.c
+++ b/fs/crypto/hooks.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * fs/crypto/hooks.c
  *

diff --git a/fs/dcache.c b/fs/dcache.c
index 8136bda..c435398 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * fs/dcache.c
  *

diff --git a/fs/dcookies.c b/fs/dcookies.c
index 57bc964..6eeb611 100644
--- a/fs/dcookies.c
+++ b/fs/dcookies.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * dcookies.c
  *

diff --git a/fs/direct-io.c b/fs/direct-io.c
index fbe885d..ac7fb19 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * fs/direct-io.c
  *

diff --git a/fs/eventfd.c b/fs/eventfd.c
index 93b1fa7..8aa0ea8 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  fs/eventfd.c
  *

diff --git a/fs/exec.c b/fs/exec.c
index d88584e..89a500b 100644
--- a/fs/exec.c
+++ b/fs/exec.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/exec.c
  *

diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 9d01db3..1bda2ab 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/fat/dir.c
  *

diff --git a/fs/fat/file.c b/fs/fat/file.c
index 0e3ed79f..4614c0b 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/fat/file.c
  *

diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index 4fc950b..1e08bd5 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/fat/misc.c
  *

diff --git a/fs/file_table.c b/fs/file_table.c
index 3f9c1b4..b07b53f 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/file_table.c
  *

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 36855c1..055c969 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * fs/fs-writeback.c
  *

diff --git a/fs/fs_struct.c b/fs/fs_struct.c
index be02507..ca639ed 100644
--- a/fs/fs_struct.c
+++ b/fs/fs_struct.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/export.h>
 #include <linux/sched/signal.h>
 #include <linux/sched/task.h>

diff --git a/fs/inode.c b/fs/inode.c
index e9d18b2..df6542e 100644
--- a/fs/inode.c
+++ b/fs/inode.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * (C) 1997 Linus Torvalds
  * (C) 1999 Andrea Arcangeli <andrea@suse.de> (dynamic inode allocation)

diff --git a/fs/libfs.c b/fs/libfs.c
index 4b59b18..7e52e77 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *	fs/libfs.c
  *	Library for filesystems writers.

diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index 5fb4f89..a5bb3f7 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/lockd/clntlock.c
  *

diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index d9c32d1..62f9822 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/lockd/clntproc.c
  *

diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index 899360b..0e610f4 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/lockd/svcsubs.c
  *

diff --git a/fs/locks.c b/fs/locks.c
index 8af49f8..ec1e4a5d 100644
--- a/fs/locks.c
+++ b/fs/locks.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/locks.c
  *

diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 8b78274..0ff3fac 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/nfs/delegation.c
  *

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 47d445b..57b6a45 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/nfs/dir.c
  *

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 2436bd9..0cb4424 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/nfs/direct.c
  *

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 144e183..95dc905 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/nfs/file.c
  *

diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 15f099a..9287eb6 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/nfs/namespace.c
  *

diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c
index 1afdb0f..fb0c425 100644
--- a/fs/nfs/nfs3client.c
+++ b/fs/nfs/nfs3client.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/nfs_fs.h>
 #include <linux/nfs_mount.h>
 #include <linux/sunrpc/addr.h>

diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 3ce2463..81b9b6d 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)

diff --git a/fs/nfs/nfs4session.c b/fs/nfs/nfs4session.c
index bcb532d..4145a01 100644
--- a/fs/nfs/nfs4session.c
+++ b/fs/nfs/nfs4session.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * fs/nfs/nfs4session.c
  *

diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 6ec3001..6ef5278 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/nfs/pagelist.c
  *

diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c
index f5ad75f..c0046c3 100644
--- a/fs/nfs/pnfs_nfs.c
+++ b/fs/nfs/pnfs_nfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Common NFS I/O  operations for the pnfs file based
  * layout drivers.

diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index c799e54..c19841c 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/nfs/read.c
  *

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index d6c6874..f88ddac 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/nfs/super.c
  *

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index bc5bb93..059a7c3 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/fs/nfs/write.c
  *

diff --git a/fs/open.c b/fs/open.c
index 9c7d724..b5b8046 100644
--- a/fs/open.c
+++ b/fs/open.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/open.c
  *

diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 2fd0fde..84ad1c9 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2002,2003 by Andreas Gruenbacher <a.gruenbacher@computer.org>
  *

diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index e39bac9..64e9ee1 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * proc/fs/generic.c --- generic routines for the proc-fs
  *

diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index a7b1243..76ae278 100644
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/fs/proc/net.c
  *

diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 3fe9044..7bb96fd 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *	fs/proc/vmcore.c Interface for accessing the crash
  * 				 dump from the system's previous life.

diff --git a/fs/splice.c b/fs/splice.c
index 25212dc..14cb602 100644
--- a/fs/splice.c
+++ b/fs/splice.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * "splice": joining two ropes together by interweaving their strands.
  *

diff --git a/fs/stack.c b/fs/stack.c
index 664ed35..4ef2c05 100644
--- a/fs/stack.c
+++ b/fs/stack.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/export.h>
 #include <linux/fs.h>
 #include <linux/fs_stack.h>

diff --git a/fs/xattr.c b/fs/xattr.c
index 0d6a6a4..90dd78f 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
   File: fs/xattr.c
 

diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h
index 1ce8e26..a6fabd8 100644
--- a/include/linux/percpu-defs.h
+++ b/include/linux/percpu-defs.h

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * linux/percpu-defs.h - basic definitions for percpu areas
  *

diff --git a/init/do_mounts.c b/init/do_mounts.c
index f8c230c7..2d1ea30 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/ctype.h>

diff --git a/init/main.c b/init/main.c
index 5a2c69b..66a196c 100644
--- a/init/main.c
+++ b/init/main.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/init/main.c
  *

diff --git a/init/version.c b/init/version.c
index ef4012e..cba3411 100644
--- a/init/version.c
+++ b/init/version.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/init/version.c
  *

diff --git a/kernel/bpf/tnum.c b/kernel/bpf/tnum.c
index 938d412..ca52b96 100644
--- a/kernel/bpf/tnum.c
+++ b/kernel/bpf/tnum.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* tnum: tracked (or tristate) numbers
  *
  * A tnum tracks knowledge about the bits of a value.  Each bit can be either

diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c
index 68ca5de..88006be 100644
--- a/kernel/cgroup/cgroup-v1.c
+++ b/kernel/cgroup/cgroup-v1.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include "cgroup-internal.h"
 
 #include <linux/ctype.h>

diff --git a/kernel/cgroup/rstat.c b/kernel/cgroup/rstat.c
index bb95a35..ca19b4c 100644
--- a/kernel/cgroup/rstat.c
+++ b/kernel/cgroup/rstat.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include "cgroup-internal.h"
 
 #include <linux/sched/cputime.h>

diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
index 9ad37b9..be01a4d 100644
--- a/kernel/context_tracking.c
+++ b/kernel/context_tracking.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Context tracking: Probe on high level context boundaries such as kernel
  * and userspace. This includes syscalls and exceptions entry/exit.

diff --git a/kernel/crash_dump.c b/kernel/crash_dump.c
index b64e238..9c23ae0 100644
--- a/kernel/crash_dump.c
+++ b/kernel/crash_dump.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/crash_dump.h>
 #include <linux/init.h>

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 6f7619c..13f0cb0 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Dynamic DMA mapping support.
  *

diff --git a/kernel/exit.c b/kernel/exit.c
index 8361a56..1803efb 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/kernel/exit.c
  *

diff --git a/kernel/fork.c b/kernel/fork.c
index b4cba95..b2b87d4 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/kernel/fork.c
  *

diff --git a/kernel/freezer.c b/kernel/freezer.c
index b162b74..c073842 100644
--- a/kernel/freezer.c
+++ b/kernel/freezer.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kernel/freezer.c - Function to freeze a process
  *

diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index f108a95..14a625c 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Detect Hung Task
  *

diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 7328891..d42acaf 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra
  *

diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index de6efde..0bfa10f 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * jump label support
  *

diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 14934af..95a260f 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kallsyms.c: in-kernel printing of symbolic oopses and stack traces.
  *

diff --git a/kernel/kthread.c b/kernel/kthread.c
index be4e879..621467c 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* Kernel thread helper functions.
  *   Copyright (C) 2004 IBM Corporation, Rusty Russell.
  *

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index d06190f..c47788f 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kernel/lockdep.c
  *

diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c
index db57878..0c601ae 100644
--- a/kernel/locking/mutex.c
+++ b/kernel/locking/mutex.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kernel/locking/mutex.c
  *

diff --git a/kernel/locking/percpu-rwsem.c b/kernel/locking/percpu-rwsem.c
index f17dad9..b6a9cc6 100644
--- a/kernel/locking/percpu-rwsem.c
+++ b/kernel/locking/percpu-rwsem.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/atomic.h>
 #include <linux/rwsem.h>
 #include <linux/percpu.h>

diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 978d63a..38fbf9f 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * RT-Mutexes: simple blocking mutual exclusion locks with PI support
  *

diff --git a/kernel/notifier.c b/kernel/notifier.c
index bfc95b3..d9f5081 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kdebug.h>
 #include <linux/kprobes.h>
 #include <linux/export.h>

diff --git a/kernel/panic.c b/kernel/panic.c
index 8779d64..6204362 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/kernel/panic.c
  *

diff --git a/kernel/pid.c b/kernel/pid.c
index 89548d3..e5cad0c 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Generic pidhash and scalable, time-bounded PID allocator
  *

diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index aa6e72f..f54bc7c 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Pid namespaces
  *

diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 9d22131..33e3feb 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This module exposes the interface to kernel space for specifying
  * QoS dependencies.  It provides infrastructure for registration of:

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 17102fd..2c199c6 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/kernel/printk.c
  *

diff --git a/kernel/profile.c b/kernel/profile.c
index 9c08a2c..af7c94b 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/kernel/profile.c
  *  Simple profiling. Manages a direct-mapped profile hit count buffer,

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 6f357f4..5710d07 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/kernel/ptrace.c
  *

diff --git a/kernel/reboot.c b/kernel/reboot.c
index b9e79e8..c4d472b 100644
--- a/kernel/reboot.c
+++ b/kernel/reboot.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/kernel/reboot.c
  *

diff --git a/kernel/resource.c b/kernel/resource.c
index 8c15f84..158f04e 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *	linux/kernel/resource.c
  *

diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c
index e3e3b97..1152259 100644
--- a/kernel/sched/clock.c
+++ b/kernel/sched/clock.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * sched_clock() for unstable CPU clocks
  *

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 102dfcf..874c427 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  kernel/sched/core.c
  *

diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index ba4a143..2305ce8 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Simple CPU accounting cgroup controller
  */

diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index f5516ba..8094093 100644
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Generic entry points for the idle threads and
  * implementation of the idle task scheduling class.

diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c
index 6873020..123ea07 100644
--- a/kernel/sched/isolation.c
+++ b/kernel/sched/isolation.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Housekeeping management. Manage the targets for routine code that can run on
  *  any CPU: unbound workqueues, timers, kthreads and any offloadable work.

diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c
index 6eb1f8e..fa0f9ad 100644
--- a/kernel/sched/wait.c
+++ b/kernel/sched/wait.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Generic waiting primitives.
  *

diff --git a/kernel/sched/wait_bit.c b/kernel/sched/wait_bit.c
index c67c6d2..45eba18 100644
--- a/kernel/sched/wait_bit.c
+++ b/kernel/sched/wait_bit.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * The implementation of the wait_bit*() and related waiting APIs:
  */

diff --git a/kernel/signal.c b/kernel/signal.c
index a1eb44d..d7b9d14 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/kernel/signal.c
  *

diff --git a/kernel/smp.c b/kernel/smp.c
index f4cf1b0..d155374 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Generic helpers for smp ipi calls
  *

diff --git a/kernel/smpboot.c b/kernel/smpboot.c
index c230c2d..2efe1e2 100644
--- a/kernel/smpboot.c
+++ b/kernel/smpboot.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Common SMP CPU bringup/teardown functions
  */

diff --git a/kernel/stacktrace.c b/kernel/stacktrace.c
index 27bafc1..5667f1d 100644
--- a/kernel/stacktrace.c
+++ b/kernel/stacktrace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kernel/stacktrace.c
  *

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 943c891..7d1008b 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * sysctl.c: General linux system control interface
  *

diff --git a/kernel/umh.c b/kernel/umh.c
index d937cba..7f255b5 100644
--- a/kernel/umh.c
+++ b/kernel/umh.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * umh - the kernel usermode helper
  */

diff --git a/kernel/up.c b/kernel/up.c
index ff536f9..483c996 100644
--- a/kernel/up.c
+++ b/kernel/up.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Uniprocessor-only support functions.  The counterpart to kernel/smp.c
  */

diff --git a/kernel/user-return-notifier.c b/kernel/user-return-notifier.c
index 9586b67..870ecd7 100644
--- a/kernel/user-return-notifier.c
+++ b/kernel/user-return-notifier.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 
 #include <linux/user-return-notifier.h>
 #include <linux/percpu.h>

diff --git a/kernel/user.c b/kernel/user.c
index 88b834f..78b17e3 100644
--- a/kernel/user.c
+++ b/kernel/user.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * The "user cache".
  *

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 9657315..95aea04 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * kernel/workqueue.c - generic async execution with shared worker pool
  *

diff --git a/lib/debug_locks.c b/lib/debug_locks.c
index ce51749..a75ee30 100644
--- a/lib/debug_locks.c
+++ b/lib/debug_locks.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * lib/debug_locks.c
  *

diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index e26aa4f..3cb21b2 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/random.h>

diff --git a/lib/idr.c b/lib/idr.c
index cb1db9b..c34e256 100644
--- a/lib/idr.c
+++ b/lib/idr.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/bitmap.h>
 #include <linux/bug.h>
 #include <linux/export.h>

diff --git a/lib/interval_tree.c b/lib/interval_tree.c
index c85f660..593ce56 100644
--- a/lib/interval_tree.c
+++ b/lib/interval_tree.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/interval_tree.h>
 #include <linux/interval_tree_generic.h>
 #include <linux/compiler.h>

diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index f74fa83..f99c41d 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/export.h>
 #include <linux/bvec.h>
 #include <linux/uio.h>

diff --git a/lib/math/gcd.c b/lib/math/gcd.c
index 7948ab2..e3b0422 100644
--- a/lib/math/gcd.c
+++ b/lib/math/gcd.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/gcd.h>
 #include <linux/export.h>

diff --git a/lib/math/lcm.c b/lib/math/lcm.c
index 03d7fcb..6e0b2e7 100644
--- a/lib/math/lcm.c
+++ b/lib/math/lcm.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/compiler.h>
 #include <linux/gcd.h>
 #include <linux/export.h>

diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c
index da54318..071a76c 100644
--- a/lib/percpu-refcount.c
+++ b/lib/percpu-refcount.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #define pr_fmt(fmt) "%s: " fmt "\n", __func__
 
 #include <linux/kernel.h>

diff --git a/lib/sg_pool.c b/lib/sg_pool.c
index d1c1e63..cff20df 100644
--- a/lib/sg_pool.c
+++ b/lib/sg_pool.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/module.h>
 #include <linux/scatterlist.h>
 #include <linux/mempool.h>

diff --git a/lib/string_helpers.c b/lib/string_helpers.c
index 29c490e..4403e19 100644
--- a/lib/string_helpers.c
+++ b/lib/string_helpers.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Helpers for formatting and printing strings
  *

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 2f003cf..6393704 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/lib/vsprintf.c
  *

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 72e6d0c..909dae4 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 
 #include <linux/wait.h>
 #include <linux/backing-dev.h>

diff --git a/mm/balloon_compaction.c b/mm/balloon_compaction.c
index ef858d5..ba739b7 100644
--- a/mm/balloon_compaction.c
+++ b/mm/balloon_compaction.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mm/balloon_compaction.c
  *

diff --git a/mm/filemap.c b/mm/filemap.c
index c5af80c..df2006b 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *	linux/mm/filemap.c
  *

diff --git a/mm/gup.c b/mm/gup.c
index 2c08248..f173fcb 100644
--- a/mm/gup.c
+++ b/mm/gup.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/err.h>

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 81718c5..ac843d3 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Generic hugetlb support.
  * (C) Nadia Yvette Chambers, April 2004

diff --git a/mm/list_lru.c b/mm/list_lru.c
index 0730bf8..0bdf315 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2013 Red Hat, Inc. and Parallels Inc. All rights reserved.
  * Authors: David Chinner and Glauber Costa

diff --git a/mm/maccess.c b/mm/maccess.c
index ec00be5..482d4d6 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Access kernel memory without faulting.
  */

diff --git a/mm/memory.c b/mm/memory.c
index 96f1d47..ddf20bd 100644
--- a/mm/memory.c
+++ b/mm/memory.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/memory.c
  *

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 328878b..e096c98 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/memory_hotplug.c
  *

diff --git a/mm/mm_init.c b/mm/mm_init.c
index 3391710..5c91838 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mm_init.c - Memory initialisation verification and debugging
  *

diff --git a/mm/mmap.c b/mm/mmap.c
index bd7b9f2..5ae6fdb 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mm/mmap.c
  *

diff --git a/mm/nommu.c b/mm/nommu.c
index b492fd1..d8c02fb 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/nommu.c
  *

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 539c91d..5a58778 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/oom_kill.c
  * 

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 0765648..bdbe8b6 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mm/page-writeback.c
  *

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3b13d39..d66bc8a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/page_alloc.c
  *

diff --git a/mm/readahead.c b/mm/readahead.c
index a459365..2fe72cd 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mm/readahead.c - address_space-level file readahead.
  *

diff --git a/mm/swap.c b/mm/swap.c
index 3a75722..7ede3ed 100644
--- a/mm/swap.c
+++ b/mm/swap.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/swap.c
  *

diff --git a/mm/swapfile.c b/mm/swapfile.c
index cf63b5f..596ac98 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/swapfile.c
  *

diff --git a/mm/truncate.c b/mm/truncate.c
index b7d3c99..8563339 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mm/truncate.c - code for taking down pages from address_spaces
  *

diff --git a/mm/util.c b/mm/util.c
index e2e4f8c..91682a2 100644
--- a/mm/util.c
+++ b/mm/util.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/string.h>

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 67bbb8d..4359b34 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/vmalloc.c
  *

diff --git a/mm/vmstat.c b/mm/vmstat.c
index a7d4933..fd7e16c 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/mm/vmstat.c
  *

diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 2db6399..f47f526 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/rtnetlink.h>

diff --git a/net/compat.c b/net/compat.c
index a031bd3..3f9ce60 100644
--- a/net/compat.c
+++ b/net/compat.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c.
  *

diff --git a/net/core/dst.c b/net/core/dst.c
index 1f13d90..e463662 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * net/core/dst.c	Protocol independent destination cache.
  *

diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 548f39d..edd6229 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
 #include <linux/export.h>

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 711b161..15f6884 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/workqueue.h>

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index a0f0541..dd8b1a4 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Common framework for low-level network console, dump, and debugger code
  *

diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c
index af6ad46..7b6b1d2 100644
--- a/net/core/secure_seq.c
+++ b/net/core/secure_seq.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */

diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 88c5069b..c411c87 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * INET		An implementation of the TCP/IP protocol suite for the LINUX
  *		operating system.  INET is implemented using the  BSD Socket

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index ac880be..bfd0ca5 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * INET		An implementation of the TCP/IP protocol suite for the LINUX
  *		operating system.  INET is implemented using the  BSD Socket

diff --git a/net/ipv4/metrics.c b/net/ipv4/metrics.c
index ca9a5fe..3205d5f 100644
--- a/net/ipv4/metrics.c
+++ b/net/ipv4/metrics.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/netlink.h>
 #include <linux/rtnetlink.h>
 #include <linux/types.h>

diff --git a/net/ipv4/netlink.c b/net/ipv4/netlink.c
index d8e3a1f..b920e1b 100644
--- a/net/ipv4/netlink.c
+++ b/net/ipv4/netlink.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/netlink.h>
 #include <linux/rtnetlink.h>
 #include <linux/types.h>

diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index bc6c02f..e1862b6 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Pluggable TCP congestion control support and newReno
  * congestion control.

diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 9c2a0d3..7c35731 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * INET		An implementation of the TCP/IP protocol suite for the LINUX
  *		operating system.  INET is implemented using the  BSD Socket

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 0c4ed66..f429e85 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * INET		An implementation of the TCP/IP protocol suite for the LINUX
  *		operating system.  INET is implemented using the  BSD Socket

diff --git a/net/ipv4/tcp_rate.c b/net/ipv4/tcp_rate.c
index baed218..0de6935 100644
--- a/net/ipv4/tcp_rate.c
+++ b/net/ipv4/tcp_rate.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <net/tcp.h>
 
 /* The bandwidth estimator estimates the rate at which the network

diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index 2ac23da..5bad937 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * INET		An implementation of the TCP/IP protocol suite for the LINUX
  *		operating system.  INET is implemented using the  BSD Socket

diff --git a/net/ipv4/tcp_ulp.c b/net/ipv4/tcp_ulp.c
index 95df7f7..3d8a1d8 100644
--- a/net/ipv4/tcp_ulp.c
+++ b/net/ipv4/tcp_ulp.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Pluggable TCP upper layer protocol support.
  *

diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c
index 763a947..5b12466 100644
--- a/net/ipv6/addrconf_core.c
+++ b/net/ipv6/addrconf_core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * IPv6 library code, needed by static components when full IPv6 support is
  * not configured or static.

diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c
index ae365df..11a43ee 100644
--- a/net/ipv6/exthdrs_core.c
+++ b/net/ipv6/exthdrs_core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * IPv6 library code, needed by static components when full IPv6 support is
  * not configured or static.

diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
index 868ae23..af36acc 100644
--- a/net/ipv6/output_core.c
+++ b/net/ipv6/output_core.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * IPv6 library code, needed by static components when full IPv6 support is
  * not configured or static.  These functions are needed by GSO/GRO implementation.

diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index d9558ff..9c94baa 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mac80211 - channel management
  */

diff --git a/net/netfilter/ipset/pfxlen.c b/net/netfilter/ipset/pfxlen.c
index d5be9c2..ff570bf 100644
--- a/net/netfilter/ipset/pfxlen.c
+++ b/net/netfilter/ipset/pfxlen.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/export.h>
 #include <linux/netfilter/ipset/pfxlen.h>
 

diff --git a/net/netfilter/ipvs/ip_vs_pe.c b/net/netfilter/ipvs/ip_vs_pe.c
index 0df17ca..8e104df 100644
--- a/net/netfilter/ipvs/ip_vs_pe.c
+++ b/net/netfilter/ipvs/ip_vs_pe.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #define KMSG_COMPONENT "IPVS"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 

diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index ee9ab10..c2eb365 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * ip_conntrack_proto_gre.c - Version 3.0
  *

diff --git a/net/netfilter/nf_conntrack_seqadj.c b/net/netfilter/nf_conntrack_seqadj.c
index 9da3034..dc21a43 100644
--- a/net/netfilter/nf_conntrack_seqadj.c
+++ b/net/netfilter/nf_conntrack_seqadj.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/types.h>
 #include <linux/netfilter.h>
 #include <net/tcp.h>

diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c
index 0d603e20..96825e2 100644
--- a/net/netfilter/nf_flow_table_ip.c
+++ b/net/netfilter/nf_flow_table_ip.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/module.h>

diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index a61d6df..3574a21 100644
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/module.h>

diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c
index 2e0a6f9..d024af4 100644
--- a/net/sunrpc/addr.c
+++ b/net/sunrpc/addr.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2009, Oracle.  All rights reserved.
  *

diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index e786102..cdb05b4 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/auth.c
  *

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index c1f1afa..d6e57da 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/net/sunrpc/clnt.c
  *

diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 979d236..126d314 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * net/sunrpc/rpc_pipe.c
  *

diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 2277b7cda..4a020b6 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * In-kernel rpcbind client supporting versions 2, 3, and 4 of the rpcbind
  * protocol

diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 1a12fb0..bb04ae5 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/sched.c
  *

diff --git a/net/sunrpc/socklib.c b/net/sunrpc/socklib.c
index 9faea12..1a864f1 100644
--- a/net/sunrpc/socklib.c
+++ b/net/sunrpc/socklib.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/socklib.c
  *

diff --git a/net/sunrpc/stats.c b/net/sunrpc/stats.c
index 71166b3..2b6dc7e 100644
--- a/net/sunrpc/stats.c
+++ b/net/sunrpc/stats.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/stats.c
  *

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 2be8278..e15cb70 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/svc.c
  *

diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index 9429b28..869ce77 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/svc_xprt.c
  *

diff --git a/net/sunrpc/svcauth.c b/net/sunrpc/svcauth.c
index 775b8c9..550b214 100644
--- a/net/sunrpc/svcauth.c
+++ b/net/sunrpc/svcauth.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/svcauth.c
  *

diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index f92ef79..5c04ba7 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/module.h>

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 540fde2..2934dd7 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/svcsock.c
  *

diff --git a/net/sunrpc/sysctl.c b/net/sunrpc/sysctl.c
index 0bea8ff..d75f17b 100644
--- a/net/sunrpc/sysctl.c
+++ b/net/sunrpc/sysctl.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/sysctl.c
  *

diff --git a/net/sunrpc/timer.c b/net/sunrpc/timer.c
index 08881d0..81ae35b 100644
--- a/net/sunrpc/timer.c
+++ b/net/sunrpc/timer.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/timer.c
  *

diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index aa8177d..48c93b9 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/net/sunrpc/xdr.c
  *

diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index a9d40bc..ad21880 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/net/sunrpc/xprt.c
  *

diff --git a/net/sysctl_net.c b/net/sysctl_net.c
index 9aed6fe..d14dab8 100644
--- a/net/sysctl_net.c
+++ b/net/sysctl_net.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* -*- linux-c -*-
  * sysctl_net.c: sysctl interface to net subsystem.
  *

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index fffe4b3..c391b56 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * This is the new netlink-based wireless configuration interface.
  *

diff --git a/net/wireless/wext-compat.h b/net/wireless/wext-compat.h
index 94c7405..8d3cc15 100644
--- a/net/wireless/wext-compat.h
+++ b/net/wireless/wext-compat.h

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

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 410233c..7ce1eda 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * xfrm_policy.c
  *

diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index c5d8131..50621d9 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * xfrm_state.c
  *

diff --git a/scripts/genksyms/keywords.c b/scripts/genksyms/keywords.c
index 9f40bcd..e93336b 100644
--- a/scripts/genksyms/keywords.c
+++ b/scripts/genksyms/keywords.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 static struct resword {
 	const char *name;
 	int token;

diff --git a/scripts/tags.sh b/scripts/tags.sh
index 70e14c6..d46be47 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
 # Generate tags or cscope files
 # Usage tags.sh <mode>
 #

diff --git a/sound/hda/array.c b/sound/hda/array.c
index 5dfa610..a204dce 100644
--- a/sound/hda/array.c
+++ b/sound/hda/array.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * generic arrays
  */

diff --git a/sound/hda/hdac_bus.c b/sound/hda/hdac_bus.c
index 10e5d261..14e57ff 100644
--- a/sound/hda/hdac_bus.c
+++ b/sound/hda/hdac_bus.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * HD-audio core bus driver
  */

diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c
index b2e9454..b02f745 100644
--- a/sound/hda/hdac_controller.c
+++ b/sound/hda/hdac_controller.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * HD-audio controller helpers
  */

diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c
index 4769f4c..6907dbe 100644
--- a/sound/hda/hdac_device.c
+++ b/sound/hda/hdac_device.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * HD-audio codec core device
  */

diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c
index 996dbc8..f399a15 100644
--- a/sound/hda/hdac_regmap.c
+++ b/sound/hda/hdac_regmap.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Regmap support for HD-audio verbs
  *

diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c
index 76e9b41..55d53b8 100644
--- a/sound/hda/hdac_stream.c
+++ b/sound/hda/hdac_stream.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * HD-audio stream operations
  */

diff --git a/sound/hda/hdmi_chmap.c b/sound/hda/hdmi_chmap.c
index f21633c..886cb781 100644
--- a/sound/hda/hdmi_chmap.c
+++ b/sound/hda/hdmi_chmap.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * HDMI Channel map support helpers
  */

diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c
index 1ec706c..8272b50 100644
--- a/sound/pci/hda/hda_bind.c
+++ b/sound/pci/hda/hda_bind.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * HD-audio codec driver binding
  * Copyright (c) Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_sysfs.c b/sound/pci/hda/hda_sysfs.c
index c154b19..fcc3441 100644
--- a/sound/pci/hda/hda_sysfs.c
+++ b/sound/pci/hda/hda_sysfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * sysfs interface for HD-audio codec
  *

diff --git a/tools/arch/x86/lib/memcpy_64.S b/tools/arch/x86/lib/memcpy_64.S
index 3b24dc0..9596198 100644
--- a/tools/arch/x86/lib/memcpy_64.S
+++ b/tools/arch/x86/lib/memcpy_64.S

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /* Copyright 2002 Andi Kleen */
 
 #include <linux/linkage.h>