From: David Hildenbrand <david@redhat.com>
To: jim.cromie@gmail.com, LKML <linux-kernel@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Jason Baron <jbaron@akamai.com>
Subject: Re: how to return a chunk of kernel .data to free mem ?
Date: Wed, 9 Jun 2021 13:19:29 +0200 [thread overview]
Message-ID: <196e42a7-d50f-48e0-b4bd-e7f3701bfc6d@redhat.com> (raw)
In-Reply-To: <CAJfuBxxo5hQLK36J1yL2MV3Zkfdnk=OmGh6Fms1adjB0GWULqA@mail.gmail.com>
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
prev parent reply other threads:[~2021-06-09 11:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-05 14:50 jim.cromie
2021-06-09 11:19 ` David Hildenbrand [this message]
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