Re: [gentoo-user] libbpf? BTF? blinking urxvt/fish?

[Nils Freydank]

Hi caveman,

you should really train your search skills :-P

(1) Just searching for "libbpf" and then for "bpf BTF" gives plenty webpages and
links. In short:

BPF: Berkeley packet filter, e.g.: https://en.wikipedia.org/wiki/Berkeley_Packet_Filter
libbpf: a library to use it, e.g.: https://github.com/libbpf/libbpf
BPF Type Format (BTF) https://www.kernel.org/doc/html/v5.9/bpf/btf.html

(2) "urxvt text blink ANSI": https://bbs.archlinux.org/viewtopic.php?id=150531

Kind regards,
Nils

Am Samstag, den 10.07.2021 um 12:44:15 Uhr +0000 schrieb caveman رَجُلُ الْكَهْفِ 穴居人 <toraboracaveman@××××××××××.com>:
> i have 2 odd isuses that i observe:
>
> (1) i get this error when i reboot my kernel:
>
>     > libbpf: failed to find valid kernel BTF
>     > libbpf: error loading vmlinux BTF: -3
>     > libbpf: failed to load object 'iterators_bpf'
>     > libbpf: failed to load BPF skeleton 'iterators_bpf': -3
>     > Failed load could be due to wrong endianness
>
> (2) plus all white texts are blinking in my
>     urxvt/fish terminal
>
> any idea what are these things?  never heard of
> BTF.  never seen terminals blink like this.
> what's going on?
>
> ty,
> cm.
>