linux-kernel - Re: [PATCH bpf v3] x86/cpufeature: bpf hack for clang not supporting asm goto

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Message-ID: <20180510181644.GE15757@pd.tnic>
Date:   Thu, 10 May 2018 20:16:44 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Peter Zijlstra <peterz@...radead.org>, Yonghong Song <yhs@...com>,
        mingo@...nel.org, torvalds@...ux-foundation.org, ast@...com,
        daniel@...earbox.net, linux-kernel@...r.kernel.org, x86@...nel.org,
        netdev@...r.kernel.org, kernel-team@...com,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH bpf v3] x86/cpufeature: bpf hack for clang not supporting
 asm goto

On Thu, May 10, 2018 at 10:58:35AM -0700, Alexei Starovoitov wrote:
> libbcc is a library. It's not only used by bcc scripts, but by production
> services that compile bpf programs with clang.

Let me get this straight: libbcc fails to compile because it
includes (through some long include chain) the kernel header
arch/x86/include/asm/cpufeature.h.

Is that it?

-- 
Regards/Gruss,
    Boris.

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