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From: Nathan Chancellor <natechancellor@gmail.com>
To: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>,
	Michal Marek <michal.lkml@markovi.net>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>,
	Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
	Yonghong Song <yhs@fb.com>,
	John Fastabend <john.fastabend@gmail.com>,
	KP Singh <kpsingh@kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
	Networking <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
	Sedat Dilek <sedat.dilek@gmail.com>
Subject: Re: [PATCH] bpf: Hoise pahole version checks into Kconfig
Date: Wed, 13 Jan 2021 16:07:39 -0700	[thread overview]
Message-ID: <20210113230739.GA22747@Ryzen-9-3900X.localdomain> (raw)
In-Reply-To: <CAEf4Bzbv6nrJNxbZAvFx4Djvf1zbWnrV_i90vPGHtV-W7Tz=bQ@mail.gmail.com>

On Wed, Jan 13, 2021 at 02:38:27PM -0800, Andrii Nakryiko wrote:
> Hm.. Just saw Linus proposing using $(error-if) in Kconfig for an
> unrelated issue ([0]). If we can make this work, then it would catch
> such issue early on, yet won't have any downsides of hiding
> CONFIG_DEBUG_INFO_BTF if pahole is too old. WDYT?
> 
>   [0] https://lore.kernel.org/lkml/CAHk-=wh-+TMHPTFo1qs-MYyK7tZh-OQovA=pP3=e06aCVp6_kA@mail.gmail.com/

Yes, I think that would be exactly what we want because DEBUG_INFO_BTF
could cause the build to error if PAHOLE_VERSION is not >= 116. I will
try to keep an eye on that thread to see how it goes then respin this
based on anything that comes from it.

Cheers,
Nathan

  reply	other threads:[~2021-01-14  2:03 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-11 18:06 [PATCH] bpf: Hoise pahole version checks into Kconfig Nathan Chancellor
2021-01-11 19:19 ` Masahiro Yamada
2021-01-11 19:34   ` Nathan Chancellor
2021-01-11 19:50     ` Masahiro Yamada
2021-01-11 20:00       ` Nathan Chancellor
2021-01-11 21:24         ` Andrii Nakryiko
2021-01-13 22:38           ` Andrii Nakryiko
2021-01-13 23:07             ` Nathan Chancellor [this message]
2021-02-04  7:22               ` Sedat Dilek
2021-01-12 23:43 ` Sedat Dilek
2021-02-04 18:11 ` Sedat Dilek

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