initial buildroot for linux 5.15

package/linux-tools/Config.in

@@ -0,0 +1,181 @@
+menu "Linux Kernel Tools"
+
+# No prompt, this is sourced by linux/Config.in as this
+# is no real package and really belongs to the kernel.
+config BR2_PACKAGE_LINUX_TOOLS
+	bool
+
+config BR2_PACKAGE_LINUX_TOOLS_BPFTOOL
+	bool "bpftool"
+	depends on !BR2_nios2 # binutils
+	depends on BR2_USE_WCHAR # binutils, elfutils
+	depends on !BR2_STATIC_LIBS # elfutils
+	depends on BR2_TOOLCHAIN_HAS_THREADS # elfutils
+	depends on BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC # elfutils
+	select BR2_PACKAGE_LINUX_TOOLS
+	select BR2_PACKAGE_BINUTILS
+	select BR2_PACKAGE_ELFUTILS
+	help
+	  bpftool is a tool for for inspection and simple manipulation
+	  of eBPF programs and maps.
+
+	  These tools are available only from kernel version 4.15.
+
+comment "bpftool needs a uClibc or glibc toolchain w/ wchar, dynamic library, threads"
+	depends on !BR2_nios2
+	depends on !BR2_USE_WCHAR || BR2_STATIC_LIBS \
+		|| !BR2_TOOLCHAIN_HAS_THREADS \
+		|| !(BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC)
+
+config BR2_PACKAGE_LINUX_TOOLS_CPUPOWER
+	bool "cpupower"
+	select BR2_PACKAGE_LINUX_TOOLS
+	select BR2_PACKAGE_PCIUTILS
+	help
+	  cpupower is a collection of tools to examine and tune power
+	  saving related features of your processor.
+
+config BR2_PACKAGE_LINUX_TOOLS_GPIO
+	bool "gpio"
+	select BR2_PACKAGE_LINUX_TOOLS
+	help
+	  gpio is a collection of tools to get information about,
+	  control and monitor gpios present on system.
+
+	  These tools use new gpio ABI which will deprecate sysfs gpio
+	  interface in the future.
+
+	  These tools are available only from kernel version 4.8.
+
+config BR2_PACKAGE_LINUX_TOOLS_IIO
+	bool "iio"
+	select BR2_PACKAGE_LINUX_TOOLS
+	help
+	  iio is a collection of tools to get information about,
+	  control and monitor iio devices present on system.
+
+	  These tools are available only from kernel version 4.7.
+
+config BR2_PACKAGE_LINUX_TOOLS_PCI
+	bool "pci"
+	select BR2_PACKAGE_LINUX_TOOLS
+	help
+	  pcitest is a tool for testing capabilities related to a
+	  PCI Endpoint (only works with specific Endpoints).
+
+	  These tools are available only from kernel version 4.20.
+
+config BR2_PACKAGE_LINUX_TOOLS_PERF
+	bool "perf"
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4
+	select BR2_PACKAGE_LINUX_TOOLS
+	help
+	  perf (sometimes "Perf Events" or perf tools, originally
+	  "Performance Counters for Linux") - is a performance
+	  analyzing tool in Linux, available from kernel version
+	  2.6.31. User-space controlling utility, called 'perf' has
+	  git-like interface with subcommands. It is capable of
+	  statistical profiling of entire system (both kernel and user
+	  code), single CPU or severals threads.
+
+	  This will build and install the userspace 'perf'
+	  command.
+
+	  Your kernel must have CONFIG_PERF_EVENTS enabled to use perf
+	  profiling. Buildroot automatically enables this in the kernel
+	  configuration.
+
+	  https://perf.wiki.kernel.org/
+
+if BR2_PACKAGE_LINUX_TOOLS_PERF
+
+config BR2_PACKAGE_LINUX_TOOLS_PERF_TUI
+	bool "enable perf TUI"
+	depends on BR2_USE_MMU # slang
+	select BR2_PACKAGE_SLANG
+	help
+	  Enable the TUI interface for perf which requires a TTY and
+	  enables zooming into DSOs and threads as well as other
+	  features.
+
+endif
+
+config BR2_PACKAGE_LINUX_TOOLS_SELFTESTS
+	bool"selftests"
+	depends on BR2_PACKAGE_BUSYBOX_SHOW_OTHERS # bash
+	depends on BR2_USE_MMU  # bash
+	depends on !BR2_STATIC_LIBS
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 # util-linux schedutils
+	select BR2_PACKAGE_LINUX_TOOLS
+	select BR2_PACKAGE_BASH # runtime
+	select BR2_PACKAGE_NCURSES
+	select BR2_PACKAGE_NCURSES_TARGET_PROGS # runtime (tput)
+	select BR2_PACKAGE_KMOD
+	select BR2_PACKAGE_KMOD_TOOLS # runtime (modprobe -n)
+	select BR2_PACKAGE_POPT
+	select BR2_PACKAGE_LIBCAP_NG
+	select BR2_PACKAGE_UTIL_LINUX
+	select BR2_PACKAGE_UTIL_LINUX_SCHEDUTILS # runtime (taskset)
+	help
+	  Build and install (to /usr/lib/kselftests) kernel selftests.
+
+	  Use of this option implies you know the process of using and
+	  compiling the kernel selftests. The Makefile to build and
+	  install these is very noisy and may appear to cause your
+	  build to fail for strange reasons.
+
+	  This is very much a use at your risk option and may not work
+	  for every setup or every architecture.
+
+comment "selftests needs BR2_PACKAGE_BUSYBOX_SHOW_OTHERS and a toolchain w/ dynamic library and headers >= 3.14"
+	depends on BR2_USE_MMU
+	depends on !BR2_PACKAGE_BUSYBOX_SHOW_OTHERS || \
+		BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
+
+config BR2_PACKAGE_LINUX_TOOLS_TMON
+	bool "tmon"
+	select BR2_PACKAGE_LINUX_TOOLS
+	select BR2_PACKAGE_NCURSES
+	help
+	  tmon is a terminal-based tool (using curses) that allows the
+	  user to access thermal information about the system.
+
+config BR2_PACKAGE_LINUX_TOOLS_HV
+	bool "hv"
+	depends on BR2_i386 || BR2_x86_64
+	select BR2_PACKAGE_LINUX_TOOLS
+	select BR2_PACKAGE_LINUX_TOOLS_HV_KVP_DAEMON if !BR2_PACKAGE_LINUX_TOOLS_HV_HAS_ONE
+	help
+	  Microsoft HyperV integration services
+
+	  Relevant kernel configuration options: CONFIG_HYPERV,
+	  CONFIG_HYPERV_UTILS.
+
+if BR2_PACKAGE_LINUX_TOOLS_HV
+
+config BR2_PACKAGE_LINUX_TOOLS_HV_HAS_ONE
+	bool
+
+config BR2_PACKAGE_LINUX_TOOLS_HV_KVP_DAEMON
+	bool "hypervkvpd (hv_kvp_daemon)"
+	help
+	  HyperV uses hypervkvpd (Key/Value Pair daemon) to retrieve
+	  status information from your virtualized guest OS
+
+config BR2_PACKAGE_LINUX_TOOLS_HV_FCOPY_DAEMON
+	bool "hypervfcopyd (hv_fcopy_daemon)"
+	select BR2_PACKAGE_LINUX_TOOLS_HV_HAS_ONE
+	help
+	  HyperV uses hypervfcopyd (File Copy daemon) to easily transfer
+	  files to and from your virtualized guest OS
+
+config BR2_PACKAGE_LINUX_TOOLS_HV_VSS_DAEMON
+	bool "hypervvssd (hv_vss_daemon)"
+	select BR2_PACKAGE_LINUX_TOOLS_HV_HAS_ONE
+	help
+	  HyperV uses hypervvssd (Volume Snapshot Service daemon) to
+	  freeze your filesystems during snapshots and backups
+
+endif # BR2_PACKAGE_LINUX_TOOLS_HV
+
+endmenu

package/linux-tools/S10hyperv

@@ -0,0 +1,66 @@
+#!/bin/sh
+
+PROGS="@PROGS@"
+PIDDIR="/var/run"
+
+# shellcheck source=/dev/null
+[ -r "/etc/default/hyperv" ] && . "/etc/default/hyperv"
+
+start_one() {
+	printf 'Starting %s: ' "$1"
+	# shellcheck disable=SC2086 # we need the word splitting
+	start-stop-daemon -b -m -S -q -p "$PIDDIR/$1.pid" -x "/sbin/$1" -- -n
+	status=$?
+	if [ "$status" -eq 0 ]; then
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+	return $status
+}
+
+start() {
+	# shellcheck disable=SC2086 # we need the word splitting
+	for prog in ${PROGS}; do
+		start_one "${prog}" || ret=$?
+	done
+    return $ret
+}
+
+stop_one() {
+	printf 'Stopping %s: ' "$1"
+	start-stop-daemon -K -q -p "$PIDDIR/$1.pid"
+	status=$?
+	if [ "$status" -eq 0 ]; then
+		rm -f "$PIDDIR/$1.pid"
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+	return $status
+}
+
+stop() {
+	# shellcheck disable=SC2086 # we need the word splitting
+	for prog in ${PROGS}; do
+		stop_one "${prog}" || ret=$?
+	done
+    return $ret
+}
+
+restart() {
+	stop
+	sleep 1
+	start
+}
+
+case "$1" in
+	start|stop|restart)
+		"$1";;
+	reload)
+		# Restart, since there is no true "reload" feature.
+		restart;;
+	*)
+		echo "Usage: $0 {start|stop|restart|reload}"
+		exit 1
+esac

package/linux-tools/hypervfcopyd.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=HyperV FCopy daemon
+After=syslog.target
+ConditionVirtualization=microsoft
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/hypervfcopyd -n
+
+[Install]
+WantedBy=multi-user.target

package/linux-tools/hypervkvpd.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=HyperV KVP daemon
+After=syslog.target
+ConditionVirtualization=microsoft
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/hypervkvpd -n
+
+[Install]
+WantedBy=multi-user.target

package/linux-tools/hypervvssd.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=HyperV VSS daemon
+After=syslog.target
+ConditionVirtualization=microsoft
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/hypervvssd -n
+
+[Install]
+WantedBy=multi-user.target

package/linux-tools/linux-tool-bpftool.mk.in

@@ -0,0 +1,37 @@
+################################################################################
+#
+# bpftool
+#
+################################################################################
+
+LINUX_TOOLS += bpftool
+
+BPFTOOL_DEPENDENCIES = binutils elfutils
+
+ifeq ($(BR2_PACKAGE_LIBCAP),y)
+BPFTOOL_DEPENDENCIES += libcap
+endif
+
+ifeq ($(BR2_PACKAGE_ZLIB),y)
+BPFTOOL_DEPENDENCIES += zlib
+endif
+
+BPFTOOL_MAKE_OPTS = $(LINUX_MAKE_FLAGS)
+
+define BPFTOOL_BUILD_CMDS
+	$(Q)if ! grep install $(LINUX_DIR)/tools/bpf/bpftool/Makefile >/dev/null 2>&1 ; then \
+		echo "Your kernel version is too old and does not have install section in the bpf tools." ; \
+		echo "At least kernel 4.15 must be used." ; \
+		exit 1 ; \
+	fi
+
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/bpf/bpftool \
+		$(BPFTOOL_MAKE_OPTS)
+endef
+
+define BPFTOOL_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/bpf/bpftool \
+		$(BPFTOOL_MAKE_OPTS) \
+		DESTDIR=$(TARGET_DIR) \
+		install
+endef

package/linux-tools/linux-tool-cpupower.mk.in

@@ -0,0 +1,41 @@
+################################################################################
+#
+# cpupower
+#
+################################################################################
+
+LINUX_TOOLS += cpupower
+
+CPUPOWER_DEPENDENCIES = pciutils $(TARGET_NLS_DEPENDENCIES)
+
+CPUPOWER_MAKE_OPTS = CROSS=$(TARGET_CROSS) \
+	CPUFREQ_BENCH=false \
+	NLS=false \
+	LDFLAGS=$(TARGET_NLS_LIBS) \
+	DEBUG=false
+
+define CPUPOWER_BUILD_CMDS
+	$(Q)if test ! -f $(LINUX_DIR)/tools/power/cpupower/Makefile ; then \
+		echo "Your kernel version is too old and does not have the cpupower tool." ; \
+		echo "At least kernel 3.4 must be used." ; \
+		exit 1 ; \
+	fi
+
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools \
+		$(CPUPOWER_MAKE_OPTS) \
+		cpupower
+endef
+
+define CPUPOWER_INSTALL_STAGING_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools \
+		$(CPUPOWER_MAKE_OPTS) \
+		DESTDIR=$(STAGING_DIR) \
+		cpupower_install
+endef
+
+define CPUPOWER_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools \
+		$(CPUPOWER_MAKE_OPTS) \
+		DESTDIR=$(TARGET_DIR) \
+		cpupower_install
+endef

package/linux-tools/linux-tool-gpio.mk.in

@@ -0,0 +1,28 @@
+################################################################################
+#
+# gpio
+#
+################################################################################
+
+LINUX_TOOLS += gpio
+
+GPIO_MAKE_OPTS = $(LINUX_MAKE_FLAGS)
+
+define GPIO_BUILD_CMDS
+	$(Q)if ! grep install $(LINUX_DIR)/tools/gpio/Makefile >/dev/null 2>&1 ; then \
+		echo "Your kernel version is too old and does not have the gpio tools." ; \
+		echo "At least kernel 4.8 must be used." ; \
+		exit 1 ; \
+	fi
+
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools \
+		$(GPIO_MAKE_OPTS) \
+		gpio
+endef
+
+define GPIO_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools \
+		$(GPIO_MAKE_OPTS) \
+		DESTDIR=$(TARGET_DIR) \
+		gpio_install
+endef

package/linux-tools/linux-tool-hv.mk.in

@@ -0,0 +1,61 @@
+################################################################################
+#
+# hv_fcopy_daemon
+#
+################################################################################
+
+LINUX_TOOLS += hv
+
+# The programs to build, as known by the kernel:
+HV_PROGS_$(BR2_PACKAGE_LINUX_TOOLS_HV_KVP_DAEMON) += hv_kvp_daemon
+HV_PROGS_$(BR2_PACKAGE_LINUX_TOOLS_HV_FCOPY_DAEMON) += hv_fcopy_daemon
+HV_PROGS_$(BR2_PACKAGE_LINUX_TOOLS_HV_VSS_DAEMON) += hv_vss_daemon
+
+# Give each tools the name most distros install them as:
+HV_hv_kvp_daemon = hypervkvpd
+HV_hv_fcopy_daemon = hypervfcopyd
+HV_hv_vss_daemon = hypervvssd
+
+HV_MAKE_OPTS = CC="$(TARGET_CC)" CFLAGS="$(filter-out -g%,$(TARGET_CFLAGS))"
+
+define HV_BUILD_CMDS
+	$(Q)for prog in $(HV_PROGS_y); do \
+		if test ! -f $(LINUX_DIR)/tools/hv/$${prog}.c ; then \
+			printf "Your kernel version is too old and does not have the HyperV %s tool." "$${prog}" ; \
+			exit 1 ; \
+		fi; \
+	done
+
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools/hv \
+		$(HV_MAKE_OPTS) \
+		$(HV_PROGS_y)
+endef
+
+ifeq ($(BR2_PACKAGE_LINUX_TOOLS_HV_KVP_DAEMON),y)
+define HV_KVP_HELPER
+	@mkdir -p $(TARGET_DIR)/usr/libexec/hypervkvpd
+	$(Q)ln -sf /bin/true $(TARGET_DIR)/usr/libexec/hypervkvpd/hv_set_ifconfig
+endef
+endif
+
+define HV_INSTALL_TARGET_CMDS
+	$(foreach prog,$(HV_PROGS_y), \
+		$(INSTALL) -m 0755 -D $(LINUX_DIR)/tools/hv/$(prog) \
+			$(TARGET_DIR)/usr/sbin/$(HV_$(prog))
+	)
+	$(HV_KVP_HELPER)
+endef
+
+define HV_INSTALL_INIT_SYSTEMD
+	$(foreach prog,$(HV_PROGS_y), \
+		$(INSTALL) -m 0644 -D package/linux-tools/$(HV_$(prog)).service \
+			$(TARGET_DIR)/usr/lib/systemd/system/$(HV_$(prog)).service
+	)
+endef
+
+define HV_INSTALL_INIT_SYSV
+	$(INSTALL) -m 0755 -D package/linux-tools/S10hyperv \
+		$(TARGET_DIR)/etc/init.d/S10hyperv
+	$(SED) 's/@PROGS@/$(foreach prog,$(HV_PROGS_y),$(HV_$(prog)))/' \
+		$(TARGET_DIR)/etc/init.d/S10hyperv
+endef

package/linux-tools/linux-tool-iio.mk.in

@@ -0,0 +1,29 @@
+################################################################################
+#
+# iio
+#
+################################################################################
+
+LINUX_TOOLS += iio
+
+IIO_MAKE_OPTS = $(LINUX_MAKE_FLAGS)
+
+define IIO_BUILD_CMDS
+	$(Q)if ! grep install $(LINUX_DIR)/tools/iio/Makefile >/dev/null 2>&1 ; then \
+		echo "Your kernel version is too old and does not have install section in the iio tools." ; \
+		echo "At least kernel 4.7 must be used." ; \
+		exit 1 ; \
+	fi
+
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools/iio \
+		$(IIO_MAKE_OPTS)
+endef
+
+# DESTDIR used since kernel version 4.14
+define IIO_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools/iio \
+		$(IIO_MAKE_OPTS) \
+		INSTALL_ROOT=$(TARGET_DIR) \
+		DESTDIR=$(TARGET_DIR) \
+		install
+endef

package/linux-tools/linux-tool-pci.mk.in

@@ -0,0 +1,27 @@
+################################################################################
+#
+# pci
+#
+################################################################################
+
+LINUX_TOOLS += pci
+
+PCI_MAKE_OPTS = $(LINUX_MAKE_FLAGS)
+
+define PCI_BUILD_CMDS
+	$(Q)if ! grep install $(LINUX_DIR)/tools/pci/Makefile >/dev/null 2>&1 ; then \
+		echo "Your kernel version is too old and does not have install section in the pci tools." ; \
+		echo "At least kernel 4.20 must be used." ; \
+		exit 1 ; \
+	fi
+
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools/pci \
+		$(PCI_MAKE_OPTS)
+endef
+
+define PCI_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools/pci \
+		$(PCI_MAKE_OPTS) \
+		DESTDIR=$(TARGET_DIR) \
+		install
+endef

package/linux-tools/linux-tool-perf.mk.in

@@ -0,0 +1,173 @@
+################################################################################
+#
+# perf
+#
+################################################################################
+
+LINUX_TOOLS += perf
+
+PERF_DEPENDENCIES = host-flex host-bison
+
+ifeq ($(KERNEL_ARCH),x86_64)
+PERF_ARCH=x86
+else
+PERF_ARCH=$(KERNEL_ARCH)
+endif
+
+PERF_MAKE_FLAGS = \
+	$(LINUX_MAKE_FLAGS) \
+	JOBS=$(PARALLEL_JOBS) \
+	ARCH=$(PERF_ARCH) \
+	DESTDIR=$(TARGET_DIR) \
+	prefix=/usr \
+	WERROR=0 \
+	NO_GTK2=1 \
+	NO_LIBPERL=1 \
+	NO_LIBPYTHON=1 \
+	NO_LIBBIONIC=1
+
+# We need to pass an argument to ld for setting the emulation when
+# building for MIPS architecture, otherwise the default one will always
+# be used and the compilation for most variants will fail.
+ifeq ($(BR2_mips),y)
+PERF_MAKE_FLAGS += LD="$(TARGET_LD) -m elf32btsmip"
+else ifeq ($(BR2_mipsel),y)
+PERF_MAKE_FLAGS += LD="$(TARGET_LD) -m elf32ltsmip"
+else ifeq ($(BR2_mips64),y)
+ifeq ($(BR2_MIPS_NABI32),y)
+PERF_MAKE_FLAGS += LD="$(TARGET_LD) -m elf32btsmipn32"
+else
+PERF_MAKE_FLAGS += LD="$(TARGET_LD) -m elf64btsmip"
+endif
+else ifeq ($(BR2_mips64el),y)
+ifeq ($(BR2_MIPS_NABI32),y)
+PERF_MAKE_FLAGS += LD="$(TARGET_LD) -m elf32ltsmipn32"
+else
+PERF_MAKE_FLAGS += LD="$(TARGET_LD) -m elf64ltsmip"
+endif
+endif
+
+# The call to backtrace() function fails for ARC, because for some
+# reason the unwinder from libgcc returns early. Thus the usage of
+# backtrace() should be disabled in perf explicitly: at build time
+# backtrace() appears to be available, but it fails at runtime: the
+# backtrace will contain only several functions from the top of stack,
+# instead of the complete backtrace.
+ifeq ($(BR2_arc),y)
+PERF_MAKE_FLAGS += NO_BACKTRACE=1
+endif
+
+ifeq ($(BR2_PACKAGE_LINUX_TOOLS_PERF_TUI),y)
+PERF_DEPENDENCIES += slang
+else
+PERF_MAKE_FLAGS += NO_NEWT=1 NO_SLANG=1
+endif
+
+ifeq ($(BR2_PACKAGE_AUDIT),y)
+PERF_DEPENDENCIES += audit
+else
+PERF_MAKE_FLAGS += NO_LIBAUDIT=1
+endif
+
+ifeq ($(BR2_PACKAGE_ZSTD),y)
+PERF_DEPENDENCIES += zstd
+endif
+
+ifeq ($(BR2_PACKAGE_LIBUNWIND),y)
+PERF_DEPENDENCIES += libunwind
+else
+PERF_MAKE_FLAGS += NO_LIBUNWIND=1
+endif
+
+ifeq ($(BR2_PACKAGE_NUMACTL),y)
+PERF_DEPENDENCIES += numactl
+else
+PERF_MAKE_FLAGS += NO_LIBNUMA=1
+endif
+
+ifeq ($(BR2_PACKAGE_ELFUTILS),y)
+PERF_DEPENDENCIES += elfutils
+else
+PERF_MAKE_FLAGS += NO_LIBELF=1 NO_DWARF=1
+endif
+
+ifeq ($(BR2_PACKAGE_BINUTILS),y)
+PERF_DEPENDENCIES += binutils
+else
+PERF_MAKE_FLAGS += NO_DEMANGLE=1
+endif
+
+ifeq ($(BR2_PACKAGE_OPENSSL),y)
+PERF_DEPENDENCIES += openssl
+else
+PERF_MAKE_FLAGS += NO_LIBCRYPTO=1
+endif
+
+ifeq ($(BR2_PACKAGE_ZLIB),y)
+PERF_DEPENDENCIES += zlib
+else
+PERF_MAKE_FLAGS += NO_ZLIB=1
+endif
+
+# lzma is provided by xz
+ifeq ($(BR2_PACKAGE_XZ),y)
+PERF_DEPENDENCIES += xz
+else
+PERF_MAKE_FLAGS += NO_LZMA=1
+endif
+
+# We really do not want to build the perf documentation, because it
+# has stringent requirement on the documentation generation tools,
+# like xmlto and asciidoc), which may be lagging behind on some
+# distributions.
+# We name it 'GNUmakefile' so that GNU make will use it instead of
+# the existing 'Makefile'.
+define PERF_DISABLE_DOCUMENTATION
+	if [ -f $(LINUX_DIR)/tools/perf/Documentation/Makefile ]; then \
+		printf "%%:\n\t@:\n" >$(LINUX_DIR)/tools/perf/Documentation/GNUmakefile; \
+	fi
+endef
+LINUX_POST_PATCH_HOOKS += PERF_DISABLE_DOCUMENTATION
+
+# O must be redefined here to overwrite the one used by Buildroot for
+# out of tree build. We build perf in $(LINUX_DIR)/tools/perf/ and not just
+# $(LINUX_DIR) so that it isn't built in the root directory of the kernel
+# sources.
+define PERF_BUILD_CMDS
+	$(Q)if test ! -f $(LINUX_DIR)/tools/perf/Makefile ; then \
+		echo "Your kernel version is too old and does not have the perf tool." ; \
+		echo "At least kernel 2.6.31 must be used." ; \
+		exit 1 ; \
+	fi
+	$(Q)if test "$(BR2_PACKAGE_ELFUTILS)" = "" ; then \
+		if ! grep -q NO_LIBELF $(LINUX_DIR)/tools/perf/Makefile* ; then \
+			if ! test -r $(LINUX_DIR)/tools/perf/config/Makefile ; then \
+				echo "The perf tool in your kernel cannot be built without libelf." ; \
+				echo "Either upgrade your kernel to >= 3.7, or enable the elfutils package." ; \
+				exit 1 ; \
+			fi \
+		fi \
+	fi
+	$(Q)if test "$(BR2_PACKAGE_LINUX_TOOLS_PERF_TUI)" = "y" ; then \
+		if ! grep -q NO_SLANG $(LINUX_DIR)/tools/perf/Makefile* ; then \
+			echo "The perf tool in your kernel cannot be build with the TUI." ; \
+			echo "Either upgrade your kernel to >= 3.10, or disable the TUI." ; \
+			exit 1 ; \
+		fi \
+	fi
+	$(TARGET_MAKE_ENV) $(MAKE1) $(PERF_MAKE_FLAGS) \
+		-C $(LINUX_DIR)/tools/perf O=$(LINUX_DIR)/tools/perf/
+endef
+
+# After installation, we remove the Perl and Python scripts from the
+# target.
+define PERF_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE1) $(PERF_MAKE_FLAGS) \
+		-C $(LINUX_DIR)/tools/perf O=$(LINUX_DIR)/tools/perf/ install
+	$(RM) -rf $(TARGET_DIR)/usr/libexec/perf-core/scripts/
+	$(RM) -rf $(TARGET_DIR)/usr/libexec/perf-core/tests/
+endef
+
+define PERF_LINUX_CONFIG_FIXUPS
+	$(call KCONFIG_ENABLE_OPT,CONFIG_PERF_EVENTS)
+endef

package/linux-tools/linux-tool-selftests.mk.in

@@ -0,0 +1,46 @@
+################################################################################
+#
+# selftests
+#
+################################################################################
+
+LINUX_TOOLS += selftests
+
+ifeq ($(KERNEL_ARCH),x86_64)
+SELFTESTS_ARCH=x86
+else
+ifeq ($(KERNEL_ARCH),i386)
+SELFTESTS_ARCH=x86
+else
+SELFTESTS_ARCH=$(KERNEL_ARCH)
+endif
+endif
+
+SELFTESTS_DEPENDENCIES = libcap-ng popt
+
+SELFTESTS_MAKE_FLAGS = \
+	$(LINUX_MAKE_FLAGS) \
+	ARCH=$(SELFTESTS_ARCH)
+
+# O must be redefined here to overwrite the one used by Buildroot for
+# out of tree build. We build the selftests in $(LINUX_DIR)/tools/selftests and
+# not just $(LINUX_DIR) so that it isn't built in the root directory of the kernel
+# sources.
+#
+# The headers_install step here is important as some kernel selftests use a
+# hardcoded CFLAGS to find kernel headers e.g:
+# CFLAGS += -I../../../../usr/include/
+# The headers_install target will install the kernel headers locally inside
+# the Linux build dir
+define SELFTESTS_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR) $(SELFTESTS_MAKE_FLAGS) \
+		headers_install
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/testing/selftests \
+		$(SELFTESTS_MAKE_FLAGS) O=$(LINUX_DIR)/tools/testing/selftests
+endef
+
+define SELFTESTS_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/testing/selftests \
+		$(SELFTESTS_MAKE_FLAGS) O=$(LINUX_DIR)/tools/testing/selftests \
+		INSTALL_PATH=$(TARGET_DIR)/usr/lib/kselftests install
+endef

package/linux-tools/linux-tool-tmon.mk.in

@@ -0,0 +1,37 @@
+################################################################################
+#
+# tmon
+#
+################################################################################
+
+LINUX_TOOLS += tmon
+
+TMON_DEPENDENCIES = host-pkgconf ncurses
+TMON_MAKE_OPTS = $(LINUX_MAKE_FLAGS) \
+	CC=$(TARGET_CC) \
+	PKG_CONFIG_PATH=$(STAGING_DIR)/usr/lib/pkgconfig
+
+ifeq ($(BR2_TOOLCHAIN_HAS_SSP),)
+define TMON_DISABLE_STACK_PROTECTOR
+	$(SED) 's%-fstack-protector%%' $(LINUX_DIR)/tools/thermal/tmon/Makefile
+endef
+endif
+
+define TMON_BUILD_CMDS
+	$(Q)if ! grep install $(LINUX_DIR)/tools/thermal/tmon/Makefile >/dev/null 2>&1 ; then \
+		echo "Your kernel version is too old and does not have the tmon tool." ; \
+		echo "At least kernel 3.13 must be used." ; \
+		exit 1 ; \
+	fi
+	$(TMON_DISABLE_STACK_PROTECTOR)
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools \
+		$(TMON_MAKE_OPTS) \
+		tmon
+endef
+
+define TMON_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools \
+		$(TMON_MAKE_OPTS) \
+		INSTALL_ROOT=$(TARGET_DIR) \
+		tmon_install
+endef

package/linux-tools/linux-tools.mk

@@ -0,0 +1,74 @@
+################################################################################
+#
+# linux-tools
+#
+################################################################################
+
+# Vampirising sources from the kernel tree, so no source nor site specified.
+# Instead, we directly build in the sources of the linux package. We can do
+# that, because we're not building in the same location and the same files.
+#
+# So, all tools refer to $(LINUX_DIR) instead of $(@D).
+
+# Note: we need individual tools makefiles to be included *before* we build
+# the list of build and install hooks below to guarantee that each tool has
+# a chance to register itself once, and only once. Therefore, the makefiles
+# are named linux-tool-*.mk.in, so they won't be picked up by the top-level
+# Makefile, but can be included here, guaranteeing the single inclusion and
+# the proper ordering.
+
+include $(sort $(wildcard package/linux-tools/*.mk.in))
+
+# We only need the kernel to be extracted, not actually built
+LINUX_TOOLS_PATCH_DEPENDENCIES = linux
+
+# Install Linux kernel tools in the staging directory since some tools
+# may install shared libraries and headers (e.g. cpupower).
+LINUX_TOOLS_INSTALL_STAGING = YES
+
+LINUX_TOOLS_DEPENDENCIES += $(foreach tool,$(LINUX_TOOLS),\
+	$(if $(BR2_PACKAGE_LINUX_TOOLS_$(call UPPERCASE,$(tool))),\
+		$($(call UPPERCASE,$(tool))_DEPENDENCIES)))
+
+LINUX_TOOLS_POST_BUILD_HOOKS += $(foreach tool,$(LINUX_TOOLS),\
+	$(if $(BR2_PACKAGE_LINUX_TOOLS_$(call UPPERCASE,$(tool))),\
+		$(call UPPERCASE,$(tool))_BUILD_CMDS))
+
+LINUX_TOOLS_POST_INSTALL_STAGING_HOOKS += $(foreach tool,$(LINUX_TOOLS),\
+	$(if $(BR2_PACKAGE_LINUX_TOOLS_$(call UPPERCASE,$(tool))),\
+		$(call UPPERCASE,$(tool))_INSTALL_STAGING_CMDS))
+
+LINUX_TOOLS_POST_INSTALL_TARGET_HOOKS += $(foreach tool,$(LINUX_TOOLS),\
+	$(if $(BR2_PACKAGE_LINUX_TOOLS_$(call UPPERCASE,$(tool))),\
+		$(call UPPERCASE,$(tool))_INSTALL_TARGET_CMDS))
+
+define LINUX_TOOLS_LINUX_CONFIG_FIXUPS
+	$(foreach tool,$(LINUX_TOOLS),\
+		$(if $(BR2_PACKAGE_LINUX_TOOLS_$(call UPPERCASE,$(tool))),\
+			$($(call UPPERCASE,$(tool))_LINUX_CONFIG_FIXUPS))
+	)
+endef
+
+define LINUX_TOOLS_INSTALL_INIT_SYSTEMD
+	$(foreach tool,$(LINUX_TOOLS),\
+		$(if $(BR2_PACKAGE_LINUX_TOOLS_$(call UPPERCASE,$(tool))),\
+			$($(call UPPERCASE,$(tool))_INSTALL_INIT_SYSTEMD))
+	)
+endef
+
+define LINUX_TOOLS_INSTALL_INIT_SYSV
+	$(foreach tool,$(LINUX_TOOLS),\
+		$(if $(BR2_PACKAGE_LINUX_TOOLS_$(call UPPERCASE,$(tool))),\
+			$($(call UPPERCASE,$(tool))_INSTALL_INIT_SYSV))
+	)
+endef
+
+define LINUX_TOOLS_INSTALL_INIT_OPENRC
+	$(foreach tool,$(LINUX_TOOLS),\
+		$(if $(BR2_PACKAGE_LINUX_TOOLS_$(call UPPERCASE,$(tool))),\
+			$(or $($(call UPPERCASE,$(tool))_INSTALL_INIT_OPENRC),\
+			     $($(call UPPERCASE,$(tool))_INSTALL_INIT_SYSV)))
+	)
+endef
+
+$(eval $(generic-package))