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-rw-r--r--samples/auxdisplay/Makefile1
-rw-r--r--samples/bpf/Makefile1
-rw-r--r--samples/bpf/bpf_load.c1
-rw-r--r--samples/bpf/bpf_load.h1
-rw-r--r--samples/bpf/cgroup_helpers.c1
-rw-r--r--samples/bpf/cgroup_helpers.h1
-rw-r--r--samples/bpf/libbpf.h1
-rw-r--r--samples/bpf/lwt_len_hist.sh1
-rw-r--r--samples/bpf/lwt_len_hist_user.c1
-rwxr-xr-xsamples/bpf/run_cookie_uid_helper_example.sh1
-rw-r--r--samples/bpf/sock_example.h1
-rw-r--r--samples/bpf/sockex1_user.c1
-rw-r--r--samples/bpf/sockex2_user.c1
-rw-r--r--samples/bpf/sockex3_user.c1
-rw-r--r--samples/bpf/spintest_user.c1
-rw-r--r--samples/bpf/syscall_nrs.c1
-rwxr-xr-xsamples/bpf/tc_l2_redirect.sh1
-rwxr-xr-xsamples/bpf/test_cgrp2_sock.sh1
-rw-r--r--samples/bpf/test_cgrp2_sock2.c1
-rwxr-xr-xsamples/bpf/test_cgrp2_sock2.sh1
-rwxr-xr-xsamples/bpf/test_cgrp2_tc.sh1
-rwxr-xr-xsamples/bpf/test_cls_bpf.sh1
-rwxr-xr-xsamples/bpf/test_ipip.sh1
-rw-r--r--samples/bpf/test_lwt_bpf.sh1
-rw-r--r--samples/bpf/test_probe_write_user_user.c1
-rwxr-xr-xsamples/bpf/test_tunnel_bpf.sh1
-rw-r--r--samples/bpf/tracex1_user.c1
-rw-r--r--samples/bpf/tracex2_user.c1
-rw-r--r--samples/bpf/tracex5_user.c1
-rw-r--r--samples/bpf/tracex6_user.c1
-rw-r--r--samples/connector/Makefile1
-rw-r--r--samples/hidraw/Makefile1
-rw-r--r--samples/hidraw/hid-example.c1
-rw-r--r--samples/mei/Makefile1
-rw-r--r--samples/mic/mpssd/Makefile1
-rw-r--r--samples/pktgen/parameters.sh1
-rwxr-xr-xsamples/pktgen/pktgen.conf-1-1-ip61
-rwxr-xr-xsamples/pktgen/pktgen.conf-1-1-ip6-rdos1
-rwxr-xr-xsamples/pktgen/pktgen.conf-1-21
-rwxr-xr-xsamples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh1
-rwxr-xr-xsamples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh1
-rwxr-xr-xsamples/pktgen/pktgen_sample01_simple.sh1
-rwxr-xr-xsamples/pktgen/pktgen_sample02_multiqueue.sh1
-rwxr-xr-xsamples/pktgen/pktgen_sample03_burst_single_flow.sh1
-rwxr-xr-xsamples/pktgen/pktgen_sample04_many_flows.sh1
-rwxr-xr-xsamples/pktgen/pktgen_sample05_flow_per_thread.sh1
-rw-r--r--samples/seccomp/Makefile1
-rw-r--r--samples/seccomp/bpf-direct.c1
-rw-r--r--samples/seccomp/bpf-fancy.c1
-rw-r--r--samples/seccomp/bpf-helper.c1
-rw-r--r--samples/seccomp/bpf-helper.h1
-rw-r--r--samples/seccomp/dropper.c1
-rw-r--r--samples/timers/Makefile1
-rw-r--r--samples/timers/hpet_example.c1
-rw-r--r--samples/trace_events/trace-events-sample.c2
-rw-r--r--samples/trace_events/trace-events-sample.h1
-rw-r--r--samples/uhid/uhid-example.c1
-rw-r--r--samples/watchdog/Makefile1
-rw-r--r--samples/watchdog/watchdog-simple.c1
59 files changed, 59 insertions, 1 deletions
diff --git a/samples/auxdisplay/Makefile b/samples/auxdisplay/Makefile
index 05e471feb6e5..0273bab27233 100644
--- a/samples/auxdisplay/Makefile
+++ b/samples/auxdisplay/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
CC := $(CROSS_COMPILE)gcc
CFLAGS := -I../../usr/include
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index cf17c7932a6e..9b4a66e3363e 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# kbuild trick to avoid linker error. Can be omitted if a module is built.
obj- := dummy.o
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index 6aa50098dfb8..2325d7ad76df 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
diff --git a/samples/bpf/bpf_load.h b/samples/bpf/bpf_load.h
index 453e3226b4ce..7d57a4248893 100644
--- a/samples/bpf/bpf_load.h
+++ b/samples/bpf/bpf_load.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BPF_LOAD_H
#define __BPF_LOAD_H
diff --git a/samples/bpf/cgroup_helpers.c b/samples/bpf/cgroup_helpers.c
index 9d1be9426401..09afaddfc9ba 100644
--- a/samples/bpf/cgroup_helpers.c
+++ b/samples/bpf/cgroup_helpers.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <sched.h>
#include <sys/mount.h>
diff --git a/samples/bpf/cgroup_helpers.h b/samples/bpf/cgroup_helpers.h
index 78c55207b6bd..06485e0002b3 100644
--- a/samples/bpf/cgroup_helpers.h
+++ b/samples/bpf/cgroup_helpers.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __CGROUP_HELPERS_H
#define __CGROUP_HELPERS_H
#include <errno.h>
diff --git a/samples/bpf/libbpf.h b/samples/bpf/libbpf.h
index 8ab36a04c174..18bfee5aab6b 100644
--- a/samples/bpf/libbpf.h
+++ b/samples/bpf/libbpf.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* eBPF mini library */
#ifndef __LIBBPF_H
#define __LIBBPF_H
diff --git a/samples/bpf/lwt_len_hist.sh b/samples/bpf/lwt_len_hist.sh
index 7d567744c7fa..090b96eaf7f7 100644
--- a/samples/bpf/lwt_len_hist.sh
+++ b/samples/bpf/lwt_len_hist.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
NS1=lwt_ns1
VETH0=tst_lwt1a
diff --git a/samples/bpf/lwt_len_hist_user.c b/samples/bpf/lwt_len_hist_user.c
index ec8f3bbcbef3..7fcb94c09112 100644
--- a/samples/bpf/lwt_len_hist_user.c
+++ b/samples/bpf/lwt_len_hist_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/unistd.h>
#include <linux/bpf.h>
diff --git a/samples/bpf/run_cookie_uid_helper_example.sh b/samples/bpf/run_cookie_uid_helper_example.sh
index f898cfa2b1aa..fc6bc0451ab4 100755
--- a/samples/bpf/run_cookie_uid_helper_example.sh
+++ b/samples/bpf/run_cookie_uid_helper_example.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
local_dir="$(pwd)"
root_dir=$local_dir/../..
mnt_dir=$(mktemp -d --tmp)
diff --git a/samples/bpf/sock_example.h b/samples/bpf/sock_example.h
index d8014065d479..772d5dad8465 100644
--- a/samples/bpf/sock_example.h
+++ b/samples/bpf/sock_example.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#include <stdlib.h>
#include <stdio.h>
#include <linux/unistd.h>
diff --git a/samples/bpf/sockex1_user.c b/samples/bpf/sockex1_user.c
index 6cd2feb3e9b3..2be935c2627d 100644
--- a/samples/bpf/sockex1_user.c
+++ b/samples/bpf/sockex1_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <assert.h>
#include <linux/bpf.h>
diff --git a/samples/bpf/sockex2_user.c b/samples/bpf/sockex2_user.c
index 0e0207c90841..44fe0805b087 100644
--- a/samples/bpf/sockex2_user.c
+++ b/samples/bpf/sockex2_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <assert.h>
#include <linux/bpf.h>
diff --git a/samples/bpf/sockex3_user.c b/samples/bpf/sockex3_user.c
index 877ecf8fc5ac..495ee02e2fb7 100644
--- a/samples/bpf/sockex3_user.c
+++ b/samples/bpf/sockex3_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <assert.h>
#include <linux/bpf.h>
diff --git a/samples/bpf/spintest_user.c b/samples/bpf/spintest_user.c
index 80676c25fa50..3d736219a31c 100644
--- a/samples/bpf/spintest_user.c
+++ b/samples/bpf/spintest_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <unistd.h>
#include <linux/bpf.h>
diff --git a/samples/bpf/syscall_nrs.c b/samples/bpf/syscall_nrs.c
index ce2a30b11248..516e255cbe8f 100644
--- a/samples/bpf/syscall_nrs.c
+++ b/samples/bpf/syscall_nrs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <uapi/linux/unistd.h>
#include <linux/kbuild.h>
diff --git a/samples/bpf/tc_l2_redirect.sh b/samples/bpf/tc_l2_redirect.sh
index 80a05591a140..37d95ef3c20f 100755
--- a/samples/bpf/tc_l2_redirect.sh
+++ b/samples/bpf/tc_l2_redirect.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
[[ -z $TC ]] && TC='tc'
[[ -z $IP ]] && IP='ip'
diff --git a/samples/bpf/test_cgrp2_sock.sh b/samples/bpf/test_cgrp2_sock.sh
index a81f38eef417..8ee0371a100a 100755
--- a/samples/bpf/test_cgrp2_sock.sh
+++ b/samples/bpf/test_cgrp2_sock.sh
@@ -1,4 +1,5 @@
#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
# Test various socket options that can be set by attaching programs to cgroups.
diff --git a/samples/bpf/test_cgrp2_sock2.c b/samples/bpf/test_cgrp2_sock2.c
index db036077b644..e53f1f6f0867 100644
--- a/samples/bpf/test_cgrp2_sock2.c
+++ b/samples/bpf/test_cgrp2_sock2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* eBPF example program:
*
* - Loads eBPF program
diff --git a/samples/bpf/test_cgrp2_sock2.sh b/samples/bpf/test_cgrp2_sock2.sh
index 891f12a0e26f..fc4e64d00cb3 100755
--- a/samples/bpf/test_cgrp2_sock2.sh
+++ b/samples/bpf/test_cgrp2_sock2.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
function config_device {
ip netns add at_ns0
diff --git a/samples/bpf/test_cgrp2_tc.sh b/samples/bpf/test_cgrp2_tc.sh
index 0b119eeaf85c..12faf5847e22 100755
--- a/samples/bpf/test_cgrp2_tc.sh
+++ b/samples/bpf/test_cgrp2_tc.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
MY_DIR=$(dirname $0)
# Details on the bpf prog
diff --git a/samples/bpf/test_cls_bpf.sh b/samples/bpf/test_cls_bpf.sh
index 0365d5ee512c..aaddd67b37ff 100755
--- a/samples/bpf/test_cls_bpf.sh
+++ b/samples/bpf/test_cls_bpf.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
function pktgen {
../pktgen/pktgen_bench_xmit_mode_netif_receive.sh -i $IFC -s 64 \
diff --git a/samples/bpf/test_ipip.sh b/samples/bpf/test_ipip.sh
index 196925403ab4..9e507c305c6e 100755
--- a/samples/bpf/test_ipip.sh
+++ b/samples/bpf/test_ipip.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
function config_device {
ip netns add at_ns0
diff --git a/samples/bpf/test_lwt_bpf.sh b/samples/bpf/test_lwt_bpf.sh
index a695ae268c40..65a976058dd3 100644
--- a/samples/bpf/test_lwt_bpf.sh
+++ b/samples/bpf/test_lwt_bpf.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
# Uncomment to see generated bytecode
#VERBOSE=verbose
diff --git a/samples/bpf/test_probe_write_user_user.c b/samples/bpf/test_probe_write_user_user.c
index b5bf178a6ecc..bf8e3a9f3067 100644
--- a/samples/bpf/test_probe_write_user_user.c
+++ b/samples/bpf/test_probe_write_user_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <assert.h>
#include <linux/bpf.h>
diff --git a/samples/bpf/test_tunnel_bpf.sh b/samples/bpf/test_tunnel_bpf.sh
index 410052d9fc37..312e1722a39f 100755
--- a/samples/bpf/test_tunnel_bpf.sh
+++ b/samples/bpf/test_tunnel_bpf.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
# In Namespace 0 (at_ns0) using native tunnel
# Overlay IP: 10.1.1.100
# local 192.16.1.100 remote 192.16.1.200
diff --git a/samples/bpf/tracex1_user.c b/samples/bpf/tracex1_user.c
index 31a48183beea..3dcb475fb135 100644
--- a/samples/bpf/tracex1_user.c
+++ b/samples/bpf/tracex1_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <linux/bpf.h>
#include <unistd.h>
diff --git a/samples/bpf/tracex2_user.c b/samples/bpf/tracex2_user.c
index 7321a3f253c9..efb5e61918df 100644
--- a/samples/bpf/tracex2_user.c
+++ b/samples/bpf/tracex2_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
diff --git a/samples/bpf/tracex5_user.c b/samples/bpf/tracex5_user.c
index 36b5925bb137..4e2774b731f0 100644
--- a/samples/bpf/tracex5_user.c
+++ b/samples/bpf/tracex5_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <linux/bpf.h>
#include <unistd.h>
diff --git a/samples/bpf/tracex6_user.c b/samples/bpf/tracex6_user.c
index a05a99a0752f..a8c22dcf8e4e 100644
--- a/samples/bpf/tracex6_user.c
+++ b/samples/bpf/tracex6_user.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <assert.h>
diff --git a/samples/connector/Makefile b/samples/connector/Makefile
index 91762d946a53..fe3c8542ae4a 100644
--- a/samples/connector/Makefile
+++ b/samples/connector/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_SAMPLE_CONNECTOR) += cn_test.o
# List of programs to build
diff --git a/samples/hidraw/Makefile b/samples/hidraw/Makefile
index a9ab96188fbe..f5c3012ffa79 100644
--- a/samples/hidraw/Makefile
+++ b/samples/hidraw/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# kbuild trick to avoid linker error. Can be omitted if a module is built.
obj- := dummy.o
diff --git a/samples/hidraw/hid-example.c b/samples/hidraw/hid-example.c
index 92e6c1511910..9bfd8ff6de82 100644
--- a/samples/hidraw/hid-example.c
+++ b/samples/hidraw/hid-example.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Hidraw Userspace Example
*
diff --git a/samples/mei/Makefile b/samples/mei/Makefile
index 7aac216dc420..c7e52e9e92ca 100644
--- a/samples/mei/Makefile
+++ b/samples/mei/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
CC := $(CROSS_COMPILE)gcc
CFLAGS := -I../../usr/include
diff --git a/samples/mic/mpssd/Makefile b/samples/mic/mpssd/Makefile
index 3e3ef91fed6b..a7a6e0c70424 100644
--- a/samples/mic/mpssd/Makefile
+++ b/samples/mic/mpssd/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
ifndef CROSS_COMPILE
uname_M := $(shell uname -m 2>/dev/null || echo not)
ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
diff --git a/samples/pktgen/parameters.sh b/samples/pktgen/parameters.sh
index 3a6244d5f47a..72fc562876e2 100644
--- a/samples/pktgen/parameters.sh
+++ b/samples/pktgen/parameters.sh
@@ -1,4 +1,5 @@
#
+# SPDX-License-Identifier: GPL-2.0
# Common parameter parsing for pktgen scripts
#
diff --git a/samples/pktgen/pktgen.conf-1-1-ip6 b/samples/pktgen/pktgen.conf-1-1-ip6
index 0b9ffd47fd41..62426afeef84 100755
--- a/samples/pktgen/pktgen.conf-1-1-ip6
+++ b/samples/pktgen/pktgen.conf-1-1-ip6
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#modprobe pktgen
diff --git a/samples/pktgen/pktgen.conf-1-1-ip6-rdos b/samples/pktgen/pktgen.conf-1-1-ip6-rdos
index ad98e5f40776..3ac3eb1f3504 100755
--- a/samples/pktgen/pktgen.conf-1-1-ip6-rdos
+++ b/samples/pktgen/pktgen.conf-1-1-ip6-rdos
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#modprobe pktgen
diff --git a/samples/pktgen/pktgen.conf-1-2 b/samples/pktgen/pktgen.conf-1-2
index ba4eb26e168d..a85552760762 100755
--- a/samples/pktgen/pktgen.conf-1-2
+++ b/samples/pktgen/pktgen.conf-1-2
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#modprobe pktgen
diff --git a/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh b/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
index e5bfe759a0fb..2839f7d315cf 100755
--- a/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
+++ b/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#
# Benchmark script:
# - developed for benchmarking ingress qdisc path
diff --git a/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh b/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
index 1ad878e95539..e1ee54465def 100755
--- a/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
+++ b/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#
# Benchmark script:
# - developed for benchmarking egress qdisc path, derived (more
diff --git a/samples/pktgen/pktgen_sample01_simple.sh b/samples/pktgen/pktgen_sample01_simple.sh
index 35b7fe34bda2..e9ab4edba2d7 100755
--- a/samples/pktgen/pktgen_sample01_simple.sh
+++ b/samples/pktgen/pktgen_sample01_simple.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#
# Simple example:
# * pktgen sending with single thread and single interface
diff --git a/samples/pktgen/pktgen_sample02_multiqueue.sh b/samples/pktgen/pktgen_sample02_multiqueue.sh
index cbdd3e2bceff..99f740ae9857 100755
--- a/samples/pktgen/pktgen_sample02_multiqueue.sh
+++ b/samples/pktgen/pktgen_sample02_multiqueue.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#
# Multiqueue: Using pktgen threads for sending on multiple CPUs
# * adding devices to kernel threads
diff --git a/samples/pktgen/pktgen_sample03_burst_single_flow.sh b/samples/pktgen/pktgen_sample03_burst_single_flow.sh
index 8d26e0ca683d..4c2e4217638a 100755
--- a/samples/pktgen/pktgen_sample03_burst_single_flow.sh
+++ b/samples/pktgen/pktgen_sample03_burst_single_flow.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#
# Script for max single flow performance
# - If correctly tuned[1], single CPU 10G wirespeed small pkts is possible[2]
diff --git a/samples/pktgen/pktgen_sample04_many_flows.sh b/samples/pktgen/pktgen_sample04_many_flows.sh
index 497fb7520464..4df92b7176da 100755
--- a/samples/pktgen/pktgen_sample04_many_flows.sh
+++ b/samples/pktgen/pktgen_sample04_many_flows.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#
# Script example for many flows testing
#
diff --git a/samples/pktgen/pktgen_sample05_flow_per_thread.sh b/samples/pktgen/pktgen_sample05_flow_per_thread.sh
index ac9cfd6b2c0a..7f8b5e59f01e 100755
--- a/samples/pktgen/pktgen_sample05_flow_per_thread.sh
+++ b/samples/pktgen/pktgen_sample05_flow_per_thread.sh
@@ -1,4 +1,5 @@
#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
#
# Script will generate one flow per thread (-t N)
# - Same destination IP
diff --git a/samples/seccomp/Makefile b/samples/seccomp/Makefile
index bf7cc6b0dc19..19a870eed82b 100644
--- a/samples/seccomp/Makefile
+++ b/samples/seccomp/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# kbuild trick to avoid linker error. Can be omitted if a module is built.
obj- := dummy.o
diff --git a/samples/seccomp/bpf-direct.c b/samples/seccomp/bpf-direct.c
index 151ec3f52189..c09e4a17ac1a 100644
--- a/samples/seccomp/bpf-direct.c
+++ b/samples/seccomp/bpf-direct.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Seccomp filter example for x86 (32-bit and 64-bit) with BPF macros
*
diff --git a/samples/seccomp/bpf-fancy.c b/samples/seccomp/bpf-fancy.c
index e8b24f443709..1ccb435025b6 100644
--- a/samples/seccomp/bpf-fancy.c
+++ b/samples/seccomp/bpf-fancy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Seccomp BPF example using a macro-based generator.
*
diff --git a/samples/seccomp/bpf-helper.c b/samples/seccomp/bpf-helper.c
index 1ef0f4d72898..ae260d77a868 100644
--- a/samples/seccomp/bpf-helper.c
+++ b/samples/seccomp/bpf-helper.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Seccomp BPF helper functions
*
diff --git a/samples/seccomp/bpf-helper.h b/samples/seccomp/bpf-helper.h
index 1d8de9edd858..0cc9816fe8e8 100644
--- a/samples/seccomp/bpf-helper.h
+++ b/samples/seccomp/bpf-helper.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Example wrapper around BPF macros.
*
diff --git a/samples/seccomp/dropper.c b/samples/seccomp/dropper.c
index 68325ca5e71c..cc0648eb389e 100644
--- a/samples/seccomp/dropper.c
+++ b/samples/seccomp/dropper.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Naive system call dropper built on seccomp_filter.
*
diff --git a/samples/timers/Makefile b/samples/timers/Makefile
index a5c3c4a35ca1..f9fa07460802 100644
--- a/samples/timers/Makefile
+++ b/samples/timers/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
ifndef CROSS_COMPILE
uname_M := $(shell uname -m 2>/dev/null || echo not)
ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
diff --git a/samples/timers/hpet_example.c b/samples/timers/hpet_example.c
index 3ab4993d85e0..f1cb622f6ec0 100644
--- a/samples/timers/hpet_example.c
+++ b/samples/timers/hpet_example.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
diff --git a/samples/trace_events/trace-events-sample.c b/samples/trace_events/trace-events-sample.c
index 446beb7ac48d..5522692100ba 100644
--- a/samples/trace_events/trace-events-sample.c
+++ b/samples/trace_events/trace-events-sample.c
@@ -78,7 +78,7 @@ static int simple_thread_fn(void *arg)
}
static DEFINE_MUTEX(thread_mutex);
-static bool simple_thread_cnt;
+static int simple_thread_cnt;
int foo_bar_reg(void)
{
diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h
index 76a75ab7a608..5bcd91455ec8 100644
--- a/samples/trace_events/trace-events-sample.h
+++ b/samples/trace_events/trace-events-sample.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* If TRACE_SYSTEM is defined, that will be the directory created
* in the ftrace directory under /sys/kernel/tracing/events/<system>
diff --git a/samples/uhid/uhid-example.c b/samples/uhid/uhid-example.c
index 7d58a4b8d324..b72d645ce828 100644
--- a/samples/uhid/uhid-example.c
+++ b/samples/uhid/uhid-example.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* UHID Example
*
diff --git a/samples/watchdog/Makefile b/samples/watchdog/Makefile
index 9b53d89b1ccf..a9430fa60253 100644
--- a/samples/watchdog/Makefile
+++ b/samples/watchdog/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
CC := $(CROSS_COMPILE)gcc
PROGS := watchdog-simple
diff --git a/samples/watchdog/watchdog-simple.c b/samples/watchdog/watchdog-simple.c
index ba45803a2216..9ce66d2ca2a9 100644
--- a/samples/watchdog/watchdog-simple.c
+++ b/samples/watchdog/watchdog-simple.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>