Messages in this thread | | | Date | Wed, 29 Mar 2023 09:28:39 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: linux-next: build failure after merge of the perf tree |
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Em Wed, Mar 29, 2023 at 10:06:12AM +1100, Stephen Rothwell escreveu: > Hi Arnaldo,
> On Tue, 28 Mar 2023 16:47:23 -0300 Arnaldo Carvalho de Melo <acme@kernel.org> wrote: > > The config files you used don't match the running kernels
> This is just the way Debian names its kernel packages.
> > > $ uname -a > > > Linux zz1 6.0.0-5-powerpc64le #1 SMP Debian 6.0.10-2 (2022-12-01) ppc64le GNU/Linux > ^^^^^^^^^^^^^^^^^^^ > > > $ ls -l /sys/kernel/bpf/ > > > ls: cannot access '/sys/kernel/bpf/': No such file or directory > > > $ grep CONFIG_DEBUG_INFO_BTF /boot/config-6.0.0-5-powerpc64le > ^^^^^^^^^^^^^^^^^^^ > And so on. It just happens that this kernel is based on v6.0.10.
> $ uname -r > 6.0.0-5-powerpc64le
> So they are the correct config files.
> Also, the mail I replied to talked about checking /sys/kernel/bpf/ (not > btf) :-(
Sorry about that, I replied from my smartphone, when on my workstation I try to try the commands and copy'n'paste the whole command + output sequence to avoid such mistakes.
> still on my build machine (of course):
> $ ls -l /sys/kernel/btf/ > ls: cannot access '/sys/kernel/btf/': No such file or directory
> So it seems that Debian do not build their powerpcle kernels with > CONFIG_DEBUG_INFO_BTF. I don't know why not since all the dependencies > seem to be OK.
Right, at this point they should if they want to properly support the full set of BPF functionalities, notably CO-RE.
> [On my arm64 machine: > > $ ls -l /sys/kernel/btf/vmlinux > -r--r--r-- 1 root root 5209570 Mar 29 09:52 /sys/kernel/btf/vmlinux > > and on my amd64 machine: > > $ ls -l /sys/kernel/btf/vmlinux > -r--r--r-- 1 root root 8536946 Mar 29 10:04 /sys/kernel/btf/vmlinux > ]
Everything should be working fine on those machines, right?
- Arnaldo
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