Messages in this thread | | | Subject | Re: how to return a chunk of kernel .data to free mem ? | From | David Hildenbrand <> | Date | Wed, 9 Jun 2021 13:19:29 +0200 |
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On 05.06.21 16:50, jim.cromie@gmail.com wrote: > 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/ >
Hm, you could try free_reserved_page(). But obviously, only full pages can be handed to the buddy.
-- Thanks,
David / dhildenb
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