[OE-core] [PATCH 0/9] linux-yocto: v4.8 + fixes + configuration updates + RFC

[Bruce Ashfield]

Hi all,

Here's the latest updates to the linux-yoco* baseline support. There are
three distinct blocks in the consolidated pull request, with the biggest
being the introduction of a 4.8 named kernel and 4.8 based libc-headers.

The others are fixes to the kernel-yocto processing and kernel meta data
updates. As such, these commits can be taken in isolation to the 4.8
update that I've included in the pull request.

  kernel-yocto: test for empty artifacts
  linux-yocto/4.x: configuration updates
  kernel-yocto: do_kernel_configme: Fix silent sysroot poisoning error

On the topic of the version 4.8:

  - This is the intended 'newest' kernel for the upcoming fall release
    cycle. We will have a shiny new one this time around.
    
  - yes it is a -rc4 release, but the version wasn't chosen by mistake
    (or lightly). It was the typical balancing act.
    
       - It is nice to work through the development cycle of the
         upstream kernel, since we can send fixes in realtime to the
         mainline tree .. but this is the side effect of the choice,
         not the reason

       - This version balances a new enough kernel, LTS/LTSI, -rt,
         platform updates (ARM/x86) and the timing of the release.

         The LTS/LTSI kernels are either too old at the moment, and
         won't get a port of major patch series like -rt. Hence why
         v4.8 shoots the difference between the options and gives us
         a good baseline to update in the upcoming months, and one that
         we can compliment with other kernel versions later.

      - The delta between any -rcX releases is small, so following this
        through until its release is not a big issue.

build/boot testing:

  - I've built and booted qemu* with core-image-sato, so it is known
    to build and have a sane runtime for all arches. I've also built
    the typical packages that misbehave (lttng, perf, etc).

  - The versatile platform switched to a device tree boot in the 4.7
    timeframe. As such, I had to patch runqemu to use a device tree
    .. and use that device tree conditionally, since we have to support
    older kernels at the same time as 4.7+

  - I know that there are pending changes to the way runqemu works, but
    I patched what I had in master .. these can be updated/adjusted if
    need be.

libc-headers update:

  - Since there are milestone builds coming up, I wanted to get the 4.8
    libc headers in place. Which meant that I had to do some different
    things to use the testing kernel tarball, and to get the version of
    the package right.

    This might cause us version stepping issues .. so anyone looking at
    this can suggest what I need to do to avoid them, and I can update
    and rebase the series with the proper fix.

The linux-yocto-4.8 repository:
   
  - There have been comments about the linux-yocto* repos filling up
    download directories, and consuming people's bandwidth.  Since we
    don't have a shallow clone or reference clone way to deal with the
    amount of shared kernel blobs, I've simultaneously generated a v4.8
    kernel in a repository that could be re-used over time.

      http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto/

    The proposal is that if we really want to avoid separate kernel trees,
    and keep the ability to rebase/remove/amend old commits to keep the
    tree clean, that I can insert the version number into the branches
    as a marker. Comments on this approach are welcome, since if we go this
    way, I need to adjust all the KBRANCH variables.

I'll follow up with commits to change the default qemu version to 4.8 once
there's general agreement about the options on this.

Cheers,

Bruce

The following changes since commit 2fedd226c3385f1ac160b3aa0bfadbded85e288c:

  ref-manual: Fixed small wording in PKGR in the glossary (2016-08-25 23:09:29 +0100)

are available in the git repository at:

  git://git.pokylinux.org/poky-contrib zedd/kernel
  http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=zedd/kernel

Bruce Ashfield (8):
  linux-yocto: introduce v4.8 recipes
  perf: adapt to Makefile.config
  qemuarm: add device tree support
  linux-yocto-dev: bump to v4.8+
  libc-headers: update to v4.8
  linux-yocto/4.8: add qemuarm device tree specification
  kernel-yocto: test for empty artifacts
  linux-yocto/4.x: configuration updates

Ioan-Adrian Ratiu (1):
  kernel-yocto: do_kernel_configme: Fix silent sysroot poisoning error

 meta/classes/kernel-yocto.bbclass                  | 12 ++++--
 meta/conf/distro/include/tcmode-default.inc        |  2 +-
 .../linux-libc-headers/linux-libc-headers_4.8.bb   | 13 +++++++
 meta/recipes-kernel/linux/linux-yocto-dev.bb       |  4 +-
 meta/recipes-kernel/linux/linux-yocto-rt_4.1.bb    |  2 +-
 meta/recipes-kernel/linux/linux-yocto-rt_4.4.bb    |  2 +-
 meta/recipes-kernel/linux/linux-yocto-rt_4.8.bb    | 38 +++++++++++++++++++
 meta/recipes-kernel/linux/linux-yocto-tiny_4.1.bb  |  2 +-
 meta/recipes-kernel/linux/linux-yocto-tiny_4.4.bb  |  2 +-
 meta/recipes-kernel/linux/linux-yocto-tiny_4.8.bb  | 25 ++++++++++++
 meta/recipes-kernel/linux/linux-yocto_4.1.bb       |  2 +-
 meta/recipes-kernel/linux/linux-yocto_4.4.bb       |  2 +-
 meta/recipes-kernel/linux/linux-yocto_4.8.bb       | 44 ++++++++++++++++++++++
 meta/recipes-kernel/perf/perf.bb                   |  9 ++++-
 scripts/runqemu-internal                           |  3 ++
 15 files changed, 150 insertions(+), 12 deletions(-)
 create mode 100644 meta/recipes-kernel/linux-libc-headers/linux-libc-headers_4.8.bb
 create mode 100644 meta/recipes-kernel/linux/linux-yocto-rt_4.8.bb
 create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny_4.8.bb
 create mode 100644 meta/recipes-kernel/linux/linux-yocto_4.8.bb

-- 
2.5.0