[PATCH 1/2] numa: Add simple generic NUMA emulation

[Greg Kroah-Hartman]

On Tue, Jun 25, 2024 at 01:58:02PM +0100, Tvrtko Ursulin wrote:
> From: Maíra Canal <mcanal at igalia.com>
> 
> Add some common code for splitting the memory into N emulated NUMA memory
> nodes.
> 
> Individual architecture can then enable selecting this option and use the
> existing numa=fake=<N> kernel argument to enable it.
> 
> Memory is always split into equally sized chunks.
> 
> Signed-off-by: Maíra Canal <mcanal at igalia.com>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>
> Co-developed-by: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Will Deacon <will at kernel.org>
> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> Cc: “Rafael J. Wysocki" <rafael at kernel.org>
> ---
>  drivers/base/Kconfig          |  7 ++++
>  drivers/base/Makefile         |  1 +
>  drivers/base/arch_numa.c      |  6 ++++
>  drivers/base/numa_emulation.c | 67 +++++++++++++++++++++++++++++++++++
>  drivers/base/numa_emulation.h | 21 +++++++++++

Why not just properly describe the numa topology in your bootloader or
device tree and not need any such "fake" stuff at all?

Also, you are now asking me to maintain these new files, not something
I'm comfortable doing at all sorry.

greg k-h