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

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Fri, 2026-07-10 at 12:05 -0500, 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>
> ---
>  meta/classes-recipe/memory-control.bbclass    |  95 +++++++++
>  .../memory-control/cgroups-v2.cfg             |  19 ++
>  .../memory-control/memory-control.sh          | 196 ++++++++++++++++++
>  .../memory-control/memory-control@.service    |  13 ++
>  .../memory-control/memory-control_1.0.bb      |  53 +++++
>  5 files changed, 376 insertions(+)
>  create mode 100644 meta/classes-recipe/memory-control.bbclass
>  create mode 100644 meta/recipes-support/memory-control/memory-control/cgroups-v2.cfg
>  create mode 100755 meta/recipes-support/memory-control/memory-control/memory-control.sh
>  create mode 100644 meta/recipes-support/memory-control/memory-control/memory-control@.service
>  create mode 100644 meta/recipes-support/memory-control/memory-control_1.0.bb

Why a top level bbclass and not just part of the recipe or an .inc
file?

What is the justification for this code in OE-Core? Who is going to use
it and who is going to maintain it?

Cheers,

Richard