linux-kernel - Re: [PATCH bpf-next 1/2] libbpf: Add missing per-arch include path

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Message-ID: <CAEf4BzZbq9OwSGi4pdb5_q8YkErfFiQFKYXg3g1rjpdejafx+Q@mail.gmail.com>
Date: Wed, 6 Nov 2024 14:04:01 -0800
From: Andrii Nakryiko <andrii.nakryiko@...il.com>
To: Björn Töpel <bjorn@...nel.org>
Cc: patchwork-bot+netdevbpf@...nel.org, andrii@...nel.org, eddyz87@...il.com, 
	mykolal@...com, bpf@...r.kernel.org, netdev@...r.kernel.org, 
	bjorn@...osinc.com, linux-kselftest@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, 
	charlie@...osinc.com, Andreas Schwab <schwab@...e.de>, Anand Moon <linux.amoon@...il.com>, 
	Palmer Dabbelt <palmer@...belt.com>
Subject: Re: [PATCH bpf-next 1/2] libbpf: Add missing per-arch include path

On Mon, Nov 4, 2024 at 2:26 AM Björn Töpel <bjorn@...nel.org> wrote:
>
> patchwork-bot+netdevbpf@...nel.org writes:
>
> > Hello:
> >
> > This series was applied to bpf/bpf-next.git (master)
> > by Andrii Nakryiko <andrii@...nel.org>:
> >
> > On Fri, 27 Sep 2024 15:13:52 +0200 you wrote:
> >> From: Björn Töpel <bjorn@...osinc.com>
> >>
> >> libbpf does not include the per-arch tools include path, e.g.
> >> tools/arch/riscv/include. Some architectures depend those files to
> >> build properly.
> >>
> >> Include tools/arch/$(SUBARCH)/include in the libbpf build.
> >>
> >> [...]
> >
> > Here is the summary with links:
> >   - [bpf-next,1/2] libbpf: Add missing per-arch include path
> >     https://git.kernel.org/bpf/bpf-next/c/710fbca820c7
> >   - [bpf-next,2/2] selftests: bpf: Add missing per-arch include path
> >     https://git.kernel.org/bpf/bpf-next/c/19090f0306f1
>
> Andrii, I just noted that this landed into bpf-next, and not bpf
> (fixes).

Hi Bjorn,

Yes, libbpf and selftests fixes are generally applied through
bpf-next, unless the issue is pretty bad and immediate.

I'm sorry, but unfortunately it's too late now to move those patches
as it's now been more than a month since they landed. For the future,
please let us know ASAP if you think patches were misrouted. I think
we are stuck with the need to do a stable backport for these, sorry.

>
> RISC-V libbpf/perf needs this fix in 6.12 to properly build. Would it be
> possible to have it in the bpf tree, and have it land in 6.12-rc7?
>
> Andreas that has a similar fix [1].
>
>
> Björn
>
> [1] https://lore.kernel.org/linux-riscv/mvm5xq44bqh.fsf@suse.de/