openembedded-core.git/meta/classes/kernel-yocto.bbclass, branch 2016-10

utils.bbclass: add function to check for git config user

2016-10-07T15:43:48+00:00

If attempting to patch a git repo without a proper git config setup,
an error will occur saying user.name/user.email are needed by git
am/apply. After some code was removed from kernel-yocto, it was
simple enough to reproduce this error by creating a kernel patch and
using a container to build.

This patch abstracts out functionality that existed in buildhistory
for use in other classes. It also adds a call to this functionality
to the kernel-yocto class.

Fixes [YOCTO #10346]

introduced in OE-core revision
0f698dfd1c8bbc0d53ae7977e26685a7a3df52a3

Signed-off-by: Stephano Cetola 
Signed-off-by: Richard Purdie

kernel-yocto: remove do_shared_workdir from SRCTREECOVEREDTASKS

2016-09-14T21:20:04+00:00

Various recipes depend on the kernel's do_shared_workdir
task, a quick grep suggests all external kernel modules
(via module.bbclass), but also perf, and potentially any
additional headers as outlined in linux-libc-headers.inc
are affected.

Having do_shared_workdir in SRCTREECOVEREDTASKS means this
task is removed when externalsrc is enabled, making all
those recipes fail as the task they depend on,
virtual/kernel:do_shared_workdir, doesn't exist.

Remove do_shared_workdir from SRCTREECOVEREDTASKS so that
all those recipes work even if externalsrc is activated.

According to the comment in here, the reason for
do_shared_workdir to be removed as a task is because it
modifies the source tree, but that doesn't seem to be
case.

Signed-off-by: Andre Draszik 
Signed-off-by: Richard Purdie

kernel-yocto: allow --allnoconfig and --alldefconfig as KCONFIG_MODES

2016-09-08T07:25:03+00:00

Previously merge_config.sh was wrapped by the configme script, configme
took the different KCONFIG_MODES as options, and used --allnoconfig
or --alldefconfig.

With the switch to merge_config.sh no longer being wrapped, the new
processing wasn't matching the existing values and only supported
allnoconfig or alldefconfig.

To avoid breaking existing layers, and also keep any working that
have already switched, we can make the case statement match both.

Signed-off-by: Bruce Ashfield 
Signed-off-by: Richard Purdie

kernel-yocto: restore kernel-meta data detection for SRC_URI elements

2016-09-08T07:25:03+00:00

Before the kernel tools were simplified and streamlined, there was code
which not only migrated a patch/cfg/scc to the kernel build tree, it
also migrated any subdirectories of those patches.

The effect of this data migration was that any other meta data in
a patch's directory structure would be available for processing.

While we don't want to do this migration anymore, it is possible to
check the path of any SRC_URI patches, and if they include a "kernel-meta"
subdirectory add it to the search path.

This restores the functionality without the old complexity.

Signed-off-by: Bruce Ashfield 
Signed-off-by: Richard Purdie

kernel-yocto: do_kernel_configme: Fix silent sysroot poisoning error

2016-09-05T10:55:49+00:00

do_kernel_configme calls merge_config.sh (installed in the sysroot by
the kern-tools-native recipe) which may invoke the compiler to complete
the configuration process.

Depending on the build (and dependencies), this may error due to sysroot poisoning [1].

The errors are similar to:

  make[1]: Entering directory '4.1+gitAUTOINC+a7e53ecc27-r0/linux-x64-standard-build' HOSTCC  scripts/basic/fixdep
  work-shared/x64/kernel-source/scripts/basic/fixdep.c:106:23: fatal error: sys/types.h: No such file or directory
  compilation terminated.
  make[2]: *** [work-shared/x64/kernel-source/scripts/basic/Makefile:22: scripts/basic/x86_64-nilrt-linux-fixdep] Error 1

Adding $TOOLCHAIN_OPTIONS to $CFLAGS before calling merge_configs.sh
fixes the error because $TOOLCHAIN_OPTIONS defines the sysroot and make
uses it to correctly compile & fill all missing kernel config options.

[1] http://lists.openembedded.org/pipermail/openembedded-core/2014-October/098253.html

Signed-off-by: Ioan-Adrian Ratiu 
Signed-off-by: Bruce Ashfield 
Signed-off-by: Richard Purdie

kernel-yocto: test for empty artifacts

2016-09-05T10:55:49+00:00

With the updated kernel tools, we generate a list of sccs, patches,
configs and BSP definitions as part of the meta data generation.

It is valid if there aren't any of these artifacts found (i.e. you
are just building a branch and a default config), but invoking the
tools with no inputs isn't a good idea.

To avoid this issue, we generate a string based on the artifacts
and skip calling the tools if there's nothing to do.

Signed-off-by: Bruce Ashfield 
Signed-off-by: Richard Purdie

kernel-yocto: streamline patch, configuration and audit phases

2016-08-18T08:27:13+00:00

We've been running with a set of kern-tools that were designed to work
with build systems that knew nothing about git, trees, commits, etc.

As such, there's been a set of shims/wrappers in place to work with
within bitbake/oe-core. These were the *me scripts: createme, updateme,
patchme and configme.

With this commit, we strip that legacy code and use the tools directly.
This means less complexity, fewer corner cases .. and no surprises
when the tools are arunning. As another benefit, the tools consume
much less time during a typical build and have no noticeable impact
on the overall build time.

Existing .scc files, features, and processing are not impacted as
these tools are compatible with existing feature descriptions and
kerne configuration fragments.

The audit of kernel configuration fragments is now detached
from the linux-yocto build structure and process. This means that
they can eventually be tweaked to offer kernel audit to any type of
kernel build and configuration process.

Additionally, the kernel symbol audit phase can now resolve symbol
dependencies and offer guidance when a symbol is missing:

WARNING: linux-yocto-4.4.15+gitAUTOINC+b030d96c7b_f5e2c49d58-r0 do_kernel_configcheck: [kernel config]: specified values did not make it into the kernel's final configuration:

---------- CONFIG_BT_6LOWPAN -----------------
Config: CONFIG_BT_6LOWPAN
From: /home/bruce/poky/build/tmp/work-shared/qemux86-64/kernel-source/.kernel-meta/configs/standard/features/bluetooth/bluetooth.cfg
Requested value: CONFIG_BT_6LOWPAN=y
Actual value:

Config 'BT_6LOWPAN' has the following conditionals:
BT_LE && 6LOWPAN (value: "n")
Dependency values are:
BT_LE [y] 6LOWPAN [n]

Signed-off-by: Bruce Ashfield
Signed-off-by: Ross Burton

kernel-yocto: allow branch auditing to be suspended

2016-05-09T07:03:57+00:00

When working on the yocto-bsp and kernel-lab update for yocto 1.2
we found it was impossible for a end-user BSP to isolate patches
on a branch, since with the following commit:

  [kernel-yocto: enforce SRC_URI specified branch]

Any new branch would be switched to whatever was specified on the
SRC_URI and undoing the work that the yocto-bsp tool did to support
board specific patches.

To fix this, we'll keep the enforcing of branch consistency enabled
by default, but introduce a variable "KMETA_AUDIT" that when not
set will skip the check.

There's no impact for existing users, and it is only something that
other plumbing commands and tools will need to use (or care about).

[YOCTO: #9120]

Signed-off-by: Bruce Ashfield 
Signed-off-by: Ross Burton

kernel-yocto: enforce SRC_URI specified branch

2016-04-03T14:51:09+00:00

During the simplication and cleanup of branches and kernel meta data
handling, the ability to force build a branch that didn't match the
meta data was dropped.

There are valid uses cases when a different branch should be built
(testing, development, etc), so we restore the capability with this
change.

If after the kernel meta data is processed the current branch does
not match the SRC_URI specified branch, a warning is generated
about the impending branch switch and that the user should double
check that they are building what they expect.

  WARNING: After meta data application, the kernel tree branch is standard/base. The
  WARNING: SRC_URI specified branch standard/gt. The branch will be forced to standard/gt,
  WARNING: but this means the board meta data (.scc files) do not match the SRC_URI specification.
  WARNING: The meta data and branch standard/gt should be inspected to ensure the proper
  WARNING: kernel is being built.

Reported-by: Steve Sakoman" 
Signed-off-by: Bruce Ashfield 
Signed-off-by: Richard Purdie

kernel-yocto.bbclass: move do_kernel_link_vmlinux() into kernel.bbclass

2016-01-17T11:32:21+00:00

Move do_kernel_link_vmlinux() from kernel-yocto.bbclass into
kernel.bbclass so that it's available to any kernel recipe.

Note that the task is not enabled by default in kernel-yocto.bbclass,
so don't enable by default in kernel.bbclass either. To enable, see
the example in linux-yocto.inc, ie:

  addtask kernel_link_vmlinux after do_compile before do_install

Signed-off-by: Andre McCurdy 
Signed-off-by: Richard Purdie