Re: [PATCH v12 0/3] mm: Fix OOM killer inaccuracy on large many-core systems

[Andrew Morton]

On Sun, 11 Jan 2026 10:02:46 -0500 Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> wrote:

> Introduce hierarchical per-cpu counters and use them for RSS tracking to
> fix the per-mm RSS tracking which has become too inaccurate for OOM
> killer purposes on large many-core systems.

Great, thanks.

> Notable changes for v12:
> 
> - Reduce per-CPU counters memory allocation size to sizeof long
>   (fixing mixup with sizeof intermediate cache line aligned items).
> - Use "long" counters types rather than "int".
> - get_mm_counter_sum() returns a precise sum.
> - Introduce and use functions to calculate the min/max possible precise
>   sum values associated with an approximate sum.

May I ask, as an early adopter, what is your overall impression of
the Gemini reviewbot?