[2/3] linux-tools: add cpupower

This patch is based on the patch send by James Knight:
http://lists.busybox.net/pipermail/buildroot/2015-May/128754.html

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Cc: James Knight <james.knight@rockwellcollins.com>
---
 linux/Config.in              |  3 +++
 linux/Config.tools.in        | 11 +++++++++++
 linux/linux-tool-cpupower.mk | 41 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+)
 create mode 100644 linux/Config.tools.in
 create mode 100644 linux/linux-tool-cpupower.mk

Romain, All,

On 2015-07-12 18:44 +0200, Romain Naour spake thusly:
> This patch is based on the patch send by James Knight:
> http://lists.busybox.net/pipermail/buildroot/2015-May/128754.html
> 
> Signed-off-by: Romain Naour <romain.naour@openwide.fr>
> Cc: James Knight <james.knight@rockwellcollins.com>

Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

I'm not too fond of the way we check for the correct version.
Alas, there's not really a better way (and that's how perf does
it too)...

Regards,
Yann E. MORIN.

> ---
>  linux/Config.in              |  3 +++
>  linux/Config.tools.in        | 11 +++++++++++
>  linux/linux-tool-cpupower.mk | 41 +++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 55 insertions(+)
>  create mode 100644 linux/Config.tools.in
>  create mode 100644 linux/linux-tool-cpupower.mk
> 
> diff --git a/linux/Config.in b/linux/Config.in
> index 8c86a1a..097cde5 100644
> --- a/linux/Config.in
> +++ b/linux/Config.in
> @@ -364,6 +364,9 @@ config BR2_LINUX_KERNEL_INSTALL_TARGET
>  # Linux extensions
>  source "linux/Config.ext.in"
>  
> +# Linux tools
> +source "linux/Config.tools.in"
> +
>  endif # BR2_LINUX_KERNEL
>  
>  endmenu
> diff --git a/linux/Config.tools.in b/linux/Config.tools.in
> new file mode 100644
> index 0000000..008e68c
> --- /dev/null
> +++ b/linux/Config.tools.in
> @@ -0,0 +1,11 @@
> +menu "Linux Kernel Tools"
> +
> +config BR2_LINUX_KERNEL_TOOL_CPUPOWER
> +	bool "cpupower"
> +	depends on !BR2_bfin # pciutils
> +	select BR2_PACKAGE_PCIUTILS
> +	help
> +	  cpupower is a collection of tools to examine and tune power
> +	  saving related features of your processor.
> +
> +endmenu
> diff --git a/linux/linux-tool-cpupower.mk b/linux/linux-tool-cpupower.mk
> new file mode 100644
> index 0000000..0938fac
> --- /dev/null
> +++ b/linux/linux-tool-cpupower.mk
> @@ -0,0 +1,41 @@
> +################################################################################
> +#
> +# Linux kernel cpupower tool
> +#
> +################################################################################
> +
> +LINUX_TOOLS += cpupower
> +
> +LINUX_TOOL_CPUPOWER_DEPENDENCIES = pciutils
> +
> +define LINUX_TOOL_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 $(LINUX_DIR)/tools \
> +		CROSS=$(TARGET_CROSS) \
> +		CPUFREQ_BENCH=false \
> +		DEBUG=false \
> +		cpupower
> +endef
> +
> +define LINUX_TOOL_CPUPOWER_INSTALL_STAGING_CMDS
> +	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools \
> +		CROSS=$(TARGET_CROSS) \
> +		CPUFREQ_BENCH=false \
> +		DEBUG=false \
> +		DESTDIR=$(STAGING_DIR) \
> +		cpupower_install
> +endef
> +
> +define LINUX_TOOL_CPUPOWER_INSTALL_TARGET_CMDS
> +	$(TARGET_MAKE_ENV) $(MAKE) -C $(LINUX_DIR)/tools \
> +		CROSS=$(TARGET_CROSS) \
> +		CPUFREQ_BENCH=false \
> +		DEBUG=false \
> +		DESTDIR=$(TARGET_DIR) \
> +		cpupower_install
> +endef
> -- 
> 2.4.3
> 
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