linux-kernel - how to return a chunk of kernel .data to free mem ?

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Message-ID: <CAJfuBxxo5hQLK36J1yL2MV3Zkfdnk=OmGh6Fms1adjB0GWULqA@mail.gmail.com>
Date:   Sat, 5 Jun 2021 08:50:39 -0600
From:   jim.cromie@...il.com
To:     LKML <linux-kernel@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Jason Baron <jbaron@...mai.com>
Subject: how to return a chunk of kernel .data to free mem ?

I have convinced DYNAMIC_DEBUG code to not need
about 15% of its __dyndbg section, about 30kb on my test kernel.

This memory is not kmalloc'd, so krealloc wont work.
(I tried anyway, on a loaded module, it panicd)

Is there a way to return a chunk of init .data memory to general use ?

heres the patchset;
https://lore.kernel.org/lkml/20210529200029.205306-1-jim.cromie@gmail.com/