Re: [PATCH v7 3/4] mm,page_owner: Display all stacks and their count

From: Oscar Salvador
Date: Sun Feb 11 2024 - 15:38:29 EST

On Sat, Feb 10, 2024 at 08:52:25AM +0100, Marco Elver wrote:
> The extra bits are used by KMSAN, and might conflict if enabled at the
> same time. I think the safest option is to keep your own list. I think
> that will also be more performant if there are other stackdepot users
> because you do not have to traverse any of the other entries.

Ok, I thought we had spare bits for other users.
But thinking about it some more, yes, it makes sense for page_owner to
maintain its own list, so traversing it is faster and we do not have
to place code to traverse the buckets in stackdepot.

Oscar Salvador