netdev - Re: [PATCH bpf-next] tools/runqslower: add BPF_F_CURRENT_CPU for running selftest on older kernels

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Message-ID: <c622d372-f4a8-e080-3843-df22f926142f@iogearbox.net>
Date:   Wed, 11 Mar 2020 15:19:20 +0100
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Andrii Nakryiko <andriin@...com>, bpf@...r.kernel.org,
        netdev@...r.kernel.org, ast@...com
Cc:     andrii.nakryiko@...il.com, kernel-team@...com
Subject: Re: [PATCH bpf-next] tools/runqslower: add BPF_F_CURRENT_CPU for
 running selftest on older kernels

On 3/11/20 5:30 AM, Andrii Nakryiko wrote:
> Libbpf compiles and runs subset of selftests on each PR in its Github mirror
> repository. To allow still building up-to-date selftests against outdated
> kernel images, add back BPF_F_CURRENT_CPU definitions back.
> 
> N.B. BCC's runqslower version ([0]) doesn't need BPF_F_CURRENT_CPU due to use of
> locally checked in vmlinux.h, generated against kernel with 1aae4bdd7879 ("bpf:
> Switch BPF UAPI #define constants used from BPF program side to enums")
> applied.
> 
>    [0] https://github.com/iovisor/bcc/pull/2809
> 
> Fixes: 367d82f17eff (" tools/runqslower: Drop copy/pasted BPF_F_CURRENT_CPU definiton")
> Signed-off-by: Andrii Nakryiko <andriin@...com>

Too bad, applied, thanks!