Re: ppc64le vmlinuz is huge when building with BTF

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On Thu, Jun 15, 2023 at 12:32:24PM +0900, Dominique Martinet wrote:
> Hi,
> 
> coming from alpine: https://gitlab.alpinelinux.org/alpine/aports/-/issues/12563

hi,
it's probably burried somewhere in that discussion, but do you have
kernel version (or commit) where that increase happened?

also link for used config would be great

thanks,
jirka

> 
> alice noticed the kernel packages got quite bigger, in particular for
> ppc64le I've confirmed that the vmlinuz file size jump when building
> with BTF:
> currently released package with BTF:
> https://dl-cdn.alpinelinux.org/alpine/edge/main/ppc64le/linux-lts-6.1.33-r0.apk
> 272M	boot/vmlinuz-lts
> 
> test build without BTF:
> https://gitlab.alpinelinux.org/martinetd/aports/-/jobs/1049335
> 44M	boot/vmlinuz-lts
> 
> 
> Is that a known issue?
> We'll probably just turn off BTF for the ppc64le build for now, but it
> might be worth checking.
> 
> 
> While I have your attention, even the x86_64 package grew much bigger
> than I thought it would, the installed modules directory go from 90MB to
> 108MB gzipped); it's a 18% increase (including kernel: 103->122MB) which
> is more than what I'd expect out of BTF.
> Most users don't care about BTF so it'd be great if they could be built
> and installed separately (debug package all over again..) or limiting
> the growth a bit more if possible.
> I haven't tried yet but at this point ikheaders is probably worth
> considering instead..
> Perhaps we're missing some stripping option or something?
> 
> 
> Thanks!
> -- 
> Dominique Martinet | Asmadeus
> 




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