Re: [PATCH bpf-next] kbuild, bpf: reproducible BTF from pahole when KBUILD_BUILD_TIMESTAMP set

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Masahiro Yamada wrote on Tue, Jul 02, 2024 at 04:58:50PM +0900:
> If --btf_features=reproducible_build has no downside,
> please add it whenever supported.

It makes the build slightly slower (from [1], 3.858 -> 3.991 (+3%) on
my crippled machine for the vmlinux BTF phase -- the modules also get
similar treatment, I'm not sure how big the total time exactly is --
for large kernels with tons of modules it definitely adds up but for small
kernels it's probably "short enough")

[1] https://lkml.kernel.org/r/20240626032253.3406460-1-asmadeus@xxxxxxxxxxxxx


I don't particularly mind either way, so this is mostly out of curiosity:
do we have any other setting that would be closer better than this
KBUILD_BUILD_TIMESTAMP to say "make this reproducible", or is the kernel
build supposed to be reproducible except for the date by default?


Thank you,
-- 
Dominique Martinet | Asmadeus




[Index of Archives]     [Linux&nblp;USB Development]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite Secrets]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux