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SubjectRe: [PATCH 00/10] objtool: Honey, I shrunk the instruction
On Wed, Feb 08, 2023 at 06:17:56PM +0100, Peter Zijlstra wrote:
> Hi,
>
> Boris complained he could no longer build allyesconfig on his 32G desktop
> machine without having OOM terminate either objtool or chrome.
>
> After talking about these patches on IRC, Nathan mentioned the linux-clang CI
> was also having trouble of recent, and these patches appear to make it happy
> again.
>
> In total these patches shrink an allyesconfig run by about 6G:
>
> pre: 5:58.22 real, 226.69 user, 131.22 sys, 26221520 mem
> post: 5:03.34 real, 210.75 user, 88.80 sys, 20241232 mem
>
> Also at:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/log/?h=objtool/core

For patches 1-9:

Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>

To make the last patch legit we could just have reloc_offset(),
reloc_addend(), reloc_type() helpers to abstract access to rela/rel
fields.

And I'm sure there are other savings we could do to struct reloc, like
single-linked lists, bitfields, etc.

Let me know if you want me to do it.

--
Josh

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