On 8/25/26 16:47, Eric Chanudet wrote: > On Mon, Aug 24, 2026 at 10:58:18AM +0200, Michal Hocko wrote: >> On Fri 21-08-26 14:56:52, Eric Chanudet wrote: >>> CMA allocations are currently unaccounted for by cgroup memory >>> controllers. As system resources, they should fall under memcg, but CMA >>> areas partition the available space for different purposes and memcg >>> doesn't have a good representation for that. >> >> Which CMA usecases are covered by this work? It would be also great to >> spend more time describing usecases. > > We would like to offer some usage guaranties to userspace processes > ending up doing allocations in CMA.
How does this e.g., relate to hugetlb allocating from CMA, to then charge to a hugetlb cgroup? I always thought of CMA being a low-level allocation mechanism with various different use cases, and actually the higher-level users should decide how to/what to charge instead. -- Cheers, David
