Re: [PATCH 1/1] lib: do limited memory accounting for modules with ARCH_NEEDS_WEAK_PER_CPU

From: Suren Baghdasaryan
Date: Wed Apr 03 2024 - 18:31:42 EST


On Wed, Apr 3, 2024 at 2:57 PM Andrew Morton <akpm@linux-foundationorg> wrote:
>
> On Tue, 2 Apr 2024 11:09:33 -0700 Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
>
> > ARCH_NEEDS_WEAK_PER_CPU does not allow percpu variable definitions inside
> > a function, therefore memory allocation profiling can't use it. This
> > definition is used only for modules, so we still can account core kernel
> > allocations and for modules we can do limited allocation accounting by
> > charging all of them to a single counter. This is not ideal but better
>
> I'll queue this as a to-be-squashed fix against "lib: add allocation
> tagging support for memory allocation profiling", OK?

Yes, that would be ideal. Thank you!