Re: [PATCH v2 18/18] lib/stackdepot: move documentation comments to stackdepot.h

[Alexander Potapenko]

On Fri, Feb 10, 2023 at 10:19 PM <andrey.konovalov@xxxxxxxxx> wrote:
>
> From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
>
> Move all interface- and usage-related documentation comments to
> include/linux/stackdepot.h.
>
> It makes sense to have them in the header where they are available to
> the interface users.
>
> Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>

> + * For example, KASAN needs to save allocation and free stack traces for each
> + * object. Storing two stack traces per object requires a lot of memory (e.g.
> + * SLUB_DEBUG needs 256 bytes per object for that). Since allocation and free
> + * stack traces often repeat, using stack depot allows to save about 100x space.
> + *
> + * Stack traces are never removed from stack depot.
... from the stack depot?