linux/poky.git/meta/classes/kernel.bbclass, branch yocto-4.0.12

kernel: add missing path to search for debug files

2023-08-02T14:47:13+00:00

Since explicit debug package creation via ${KERNEL_PACKAGE_NAME}-dbg has been added to kernel, it has to cover all PACKAGE_DEBUG_SPLIT_STYLE options. For ex. when the variable "debug-file-directory" package search path has to be set explicitly, otherwise it will not find any files. (From OE-Core rev: 9adbda8450c57f49edf85e3b3433304e8ac8267e) Signed-off-by: Andrej Valek Signed-off-by: Richard Purdie (cherry picked from commit 9c39da147683dcaaa244b3ddc4531c4408ad5c9e) Signed-off-by: Steve Sakoman

kernel: don't force PAHOLE=false

2023-06-23T14:16:41+00:00

If a specific kernel provider or configuration wants to enable BTF and pahole analysis, it isn't currently possible due to the explicit definition to false in the base kernel build arguments. pahole is now detected by the kernel built itself, so unless pahole-native is enabled, the result is the same. If a kernel does require an explicit disable of pahole, it is better to carry PAHOLE=false in those specific recipes. (From OE-Core rev: 44b75c7442b05a2fedcc0d73982566c2bef84357) Signed-off-by: Bruce Ashfield Signed-off-by: Richard Purdie (cherry picked from commit b1e4851a36ed47ce6ba880a49264b9a57c78cf4f) Signed-off-by: Steve Sakoman

kernel-devicetree: make shell scripts posix compliant

2023-06-02T02:24:07+00:00

Use the notation suggested by Martin Jansa to avoid a bashism. Also switch KERNEL_DTBVENDORED to the more common 0/1 notation instead of true/false. Fixes: 04ab57d200 (kernel-devicetree: allow specification of dtb directory, 2023-05-02) (From OE-Core rev: b7d6fc07462e6fca09d0db7f43a62920250ef053) Signed-off-by: Martin Jansa Signed-off-by: Randolph Sapp Signed-off-by: Alexandre Belloni Signed-off-by: Steve Sakoman

kernel-devicetree: allow specification of dtb directory

2023-06-02T02:24:07+00:00

Fedora/Redhat and Arch are somewhat standardized on their dtb directory structure. Let's add some flags to configure yocto to mimic that behavior. Add the following variables to the kernel class: - KERNEL_DTBDEST (controls the destination directory for dtbs) - KERNEL_DTBVENDORED (controls if vendor subdirectories are to be respected) Currently KERNEL_DTBDEST is expected to be a subdir of KERNEL_IMAGEDEST and KERNEL_DTBVENDORED is expected to be "true"/"false". This only applies to the package directory structure. The deploydir structure is purposely left untouched for compatibility with existing recipes. By default this is configured to behave the same as the current recipe and produce a flat dtb directory at KERNEL_IMAGEDEST. (From OE-Core rev: 77d6118e20751f68ad7104edec8f14dbb5ba6ec1) Signed-off-by: Randolph Sapp Signed-off-by: Alexandre Belloni Signed-off-by: Richard Purdie Signed-off-by: Steve Sakoman

kernel: improve initramfs bundle processing time

2023-05-12T14:04:52+00:00

This is a partial fix for bugzilla 15059 [https://bugzilla.yoctoproject.org/show_bug.cgi?id=15059] It has been noted by several people that when an initramfs is bundled: - a lot of the kernel is rebuilt - it takes a really long time When looking at the logs, the second kernel compilation (that performs the bundle) is not using the parallel make settings, and builds with -j1. We are already explicitly passing PARALLEL_MAKE when building kernel modules, and by extending that explicit use to the main kernel compilation, we ensure that we always get a parallel build. Build times chnaged from more than 30 minutes for the bundle, to 3 minutes in local testing. The question of whether or not too much is rebuilding during the bundle step is still an open question, but with this tweak, at least the build time is back in the realm of acceptable. (From OE-Core rev: a2a889b760785474dbc04e3ec11521f6da90161d) Signed-off-by: Bruce Ashfield Signed-off-by: Luca Ceresoli (cherry picked from commit 88fd394ecf0f2174b792075d409d87046896426b) Signed-off-by: Steve Sakoman

linux: inherit pkgconfig in kernel.bbclass

2023-03-20T17:20:44+00:00

pkgconfig is being required to find dependencies for building kernel native tools, move "inherit pkgconfig" to kernel.bbclass so BSP kernel recipes can also benefit from it. (From OE-Core rev: e09c50e01d0f5cf45b9622ab0ed33df12bdeb7ee) Signed-off-by: Ming Liu Signed-off-by: Alexandre Belloni (cherry picked from commit 8a84bd98e3fbc16c782f83064801e469d086911e) Signed-off-by: Steve Sakoman Signed-off-by: Richard Purdie

kernel/linux-kernel-base: Fix kernel build artefact determinism issues

2023-02-15T21:46:56+00:00

With the 6.1 kernel we've seen reproducibility/determinism issues where the kernel seems to rebuild headers referencing the hostname or local user. kernel-devsrc building after the kernel seemed to trigger it in some cases. Moving the definitions to the bbclass used by all the kernel recipe code including kernel-devsrc seems to be the best way to ensure this doesn't happen. (From OE-Core rev: 4c302827365903b99a517651c2a14661ce78f79b) Signed-off-by: Richard Purdie (cherry picked from commit 60681baa97daf4f3856453c34d6be08b6771a81b) Signed-off-by: Steve Sakoman Signed-off-by: Richard Purdie

kernel.bbclass: remove empty module directories to prevent QA issues

2023-01-06T17:33:23+00:00

Currently, allyesconfig test runs for x86_64 fail with: ERROR: linux-yocto-5.19.17+gitAUTOINC+0cba9aa404_aaf4490d18-r0 do_package: QA Issue: linux-yocto: Files/directories were installed but not shipped in any package: /lib/modules/5.19.17/kernel/drivers/nvdimm With CONFIG_NVDIMM_TEST_BUILD=m, an empty nvdimm directory is created during modules_install, which triggers the QA issue. Extend kernel_do_install() to also remove inner empty directories that might get created by modules_install. (From OE-Core rev: 2f2abcb6d2394cdfd3985499ed882f43a5d2a299) Signed-off-by: Ovidiu Panait Signed-off-by: Alexandre Belloni (cherry picked from commit 7120b09a33af4c9a18063c0f2e51fb598697e39c) Signed-off-by: Steve Sakoman Signed-off-by: Richard Purdie

kernel.bbclass: make KERNEL_DEBUG_TIMESTAMPS work at rebuild

2022-12-07T15:02:45+00:00

Currently, the KERNEL_DEBUG_TIMESTAMPS is not working as expected at rebuild. That is, even if we set it to "1", the kernel build time is not changed. The problem could be reproduced by the following steps. 1. bitbake core-image-minimal; start image and check `uname -a` output. 2. set in local.conf: KERNEL_DEBUG_TIMESTAMPS = "1" 3. bitbake core-image-minimal; start image and check `uname -a` output. It's expected that after enabling KERNEL_DEBUG_TIMESTAMPS, the kernel build time will be set to current date. But it's not. This is because the compile.h was not re-generated when do_compile task was re-executed. In mkcompile_h, we have: """ # Only replace the real compile.h if the new one is different, # in order to preserve the timestamp and avoid unnecessary # recompilations. # We don't consider the file changed if only the date/time changed, # unless KBUILD_BUILD_TIMESTAMP was explicitly set (e.g. for # reproducible builds with that value referring to a commit timestamp). # A kernel config change will increase the generation number, thus # causing compile.h to be updated (including date/time) due to the # changed comment in the # first line. """ It has made it very clear that it will not be re-generated unless we have KBUILD_BUILD_TIMESTAMP set explicitly. So we set this variable explicitly in do_compile to fix this issue. (From OE-Core rev: 640ac18b2daed698adbf849a5aef55f5de9e5db5) Signed-off-by: Chen Qi Signed-off-by: Alexandre Belloni (cherry picked from commit 1b68c2d2d385013a1c535ef81172494302a36d74) Signed-off-by: Steve Sakoman Signed-off-by: Richard Purdie

kernel.bbclass: Include randstruct seed assets in STAGING_KERNEL_BUILDDIR

2022-11-24T15:30:01+00:00

When building with CONFIG_MODVERSIONS=y and CONFIG_RANDSTRUCT=y we need to copy the build assets generated for the randstrutc seed to STAGING_KERNEL_BUILDDIR, otherwise the out-of-tree modules build will generate those assets which will result in a different RANDSTRUCT_HASHED_SEED. (From OE-Core rev: d6cb9dce1ffb14f9db497e9bb0cb7265ea4064ec) Signed-off-by: Diego Sueiro Signed-off-by: Alexandre Belloni (cherry picked from commit b36303158b2e0273ff415bdedefb379f680b30fc) Signed-off-by: Steve Sakoman Signed-off-by: Richard Purdie