[PATCH 1/4 Trusty meta SRU] UBUNTU: Add HWE kernel meta packages

[Chris J Arges]

On 11/18/2014 02:33 PM, tim.gardner at canonical.com wrote:
> From: Tim Gardner <tim.gardner at canonical.com>
> 
> BugLink: http://bugs.launchpad.net/bugs/1393877
> 
> We messed up when naming HWE meta packages in Precise. We should have
> made those package names unique per LTS release because we cannot
> now create a HWE meta package of the same name without also creating an
> upgrade path that a user probably does not want. For example, upgrading from
> 12.04.[2-5] to 14.04 (after 14.04.2 is released) would upgrade to an HWE
> kernel instead of the 14.04 GA kernel as expected.
> 
> Therefore, the HWE meta package name will be made unique by adding the name
> of the LTS release, e.g., linux-image-hwe-generic-trusty.
> 
> Update to the next HWE kernel by changing HWE_KERNEL_NAME in debian/rules.
> 
> Signed-off-by: Tim Gardner <tim.gardner at canonical.com>
> ---
>  meta-source/debian/control.common | 32 ++++++++++++++++++++++++++++++++
>  meta-source/debian/rules          |  3 ++-
>  2 files changed, 34 insertions(+), 1 deletion(-)
> 
> diff --git a/meta-source/debian/control.common b/meta-source/debian/control.common
> index 0ae5386..827dbec 100644
> --- a/meta-source/debian/control.common
> +++ b/meta-source/debian/control.common
> @@ -358,3 +358,35 @@ Priority: optional
>  Depends: ${misc:Depends}, linux-signed-generic
>  Description: Complete Signed Generic Linux kernel and headers
>   Transistional package for upgrades from 12.04 to 14.04 (Precise to Trusty)
> +
> +#
> +# Reference the current Hardware Enablement LTS generic and virtual kernel flavours.
> +#
> +Package: linux-image-hwe-generic-trusty
> +Architecture: i386 amd64 armhf arm64 powerpc ppc64el
> +Section: kernel
> +Priority: optional
> +Depends: ${misc:Depends}, linux-image-generic-lts-HWE_KERNEL_NAME
> +Description: Depends on the generic hardware enablement kernel image.
> +
> +Package: linux-hwe-generic-trusty
> +Architecture: i386 amd64 armhf arm64 powerpc ppc64el
> +Section: kernel
> +Priority: optional
> +Depends: ${misc:Depends}, linux-image-hwe-generic-trusty, linux-headers-generic-lts-HWE_KERNEL_NAME
> +Description: Depends on the generic hardware enablement kernel image and headers.
> +
> +Package: linux-image-hwe-virtual-trusty
> +Architecture: i386 amd64 armhf arm64 powerpc ppc64el
> +Section: kernel
> +Priority: optional
> +Depends: ${misc:Depends}, linux-image-virtual-lts-HWE_KERNEL_NAME
> +Description: Depends on the virtual hardware enablement kernel image.
> +
> +Package: linux-hwe-virtual-trusty
> +Architecture: i386 amd64 armhf arm64 powerpc ppc64el
> +Section: kernel
> +Priority: optional
> +Depends: ${misc:Depends}, linux-image-hwe-virtual-trusty, linux-headers-virtual-lts-HWE_KERNEL_NAME
> +Description: Depends on the virtual hardware enablement kernel image and headers.
> +
> diff --git a/meta-source/debian/rules b/meta-source/debian/rules
> index b3d3a01..d69dd70 100755
> --- a/meta-source/debian/rules
> +++ b/meta-source/debian/rules
> @@ -8,6 +8,7 @@
>  #
>  
>  RELEASE_NAME=saucy
> +HWE_KERNEL_NAME=utopic
>  

I understand the need to have the -trusty postfix on the kernel; however
when we re-use this code for the 16.04 release we'll need to ensure that
-trusty is replaced with the proper string. Why not re-use the
RELEASE_NAME variable and the sed operation below?

--chris

>  # 5 digit versions (2.6.38.<abi>.<upload>, 3 digit kernel base versions (2.6.38)
>  KERNEL_VERSION=$(shell dpkg-parsechangelog | grep ^Version | sed -e \
> @@ -43,7 +44,7 @@ clean: debian/control
>  debian/control: $(control_files)
>  	rm -f debian/control.tmp
>  	for i in $^; do \
> -		sed 's/RELEASE_NAME/$(RELEASE_NAME)/g' $$i >> debian/control.tmp; \
> +		sed -e 's/RELEASE_NAME/$(RELEASE_NAME)/g' -e 's/HWE_KERNEL_NAME/$(HWE_KERNEL_NAME)/g' $$i >> debian/control.tmp; \
>  		echo >> debian/control.tmp; \
>  	done
>  	rm -f $@
>