Re: [OE-core] [PATCH] memory-control: add recipe and bbclass for cgroup v2 memory limiting

["Mathieu Dubois-Briand" <mathieu.dubois-briand@bootlin.com>]

On Fri Jul 10, 2026 at 7:05 PM CEST, Ishaan Desai via lists.openembedded.org wrote:
> Adds a CLI tool and bbclass for applying per-service memory limits via
> systemd resource control and Linux cgroups v2.
>
> The memory-control command inspects MemoryMax and MemoryHigh settings
> for any running systemd service and lists all services with a drop-in
> applied.
>
> memory-control.bbclass allows any recipe to set a memory limit at build
> time by inheriting the class and setting MEMORY_LIMIT. Two OOM policies
> are available via MEMORY_OOM_POLICY: "reboot" (default) reboots on OOM,
> and "kill" terminates only the offending process.
>
> AI-Generated: Uses IBM Bob
>
> Signed-off-by: Ishaan Desai <Ishaan.Desai@ibm.com>
> ---

Hi Ishaan,

Thanks for your patch.

It looks like this is breaking builds on some platforms:

ERROR: Nothing RPROVIDES 'systemd' (but /srv/pokybuild/yocto-worker/no-x11/build/layers/openembedded-core/meta/recipes-support/memory-control/memory-control_1.0.bb RDEPENDS on or otherwise requires it)
systemd was skipped: using DISTRO 'poky', which is missing required DISTRO_FEATURES: 'usrmerge systemd'
NOTE: Runtime target 'systemd' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['systemd']
NOTE: Runtime target 'memory-control' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['memory-control', 'systemd']
ERROR: Nothing RPROVIDES 'memory-control-dev' (but /srv/pokybuild/yocto-worker/no-x11/build/layers/openembedded-core/meta/recipes-support/memory-control/memory-control_1.0.bb RDEPENDS on or otherwise requires it)
No eligible RPROVIDERs exist for 'memory-control-dev'
NOTE: Runtime target 'memory-control-dev' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['memory-control-dev']


https://autobuilder.yoctoproject.org/valkyrie/#/builders/25/builds/4115
https://autobuilder.yoctoproject.org/valkyrie/#/builders/6/builds/4141
https://autobuilder.yoctoproject.org/valkyrie/api/v2/logs/7643378/raw_inline

Also, please add the corresponding entry in
meta/conf/distro/include/maintainers.inc.

Thanks,
Mathieu

-- 
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com