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Date:   Wed, 16 Oct 2019 15:34:26 +0200
From:   Jesper Dangaard Brouer <brouer@redhat.com>
To:     Eric Sage <eric@sage.org>
Cc:     Andrii Nakryiko <andrii.nakryiko@gmail.com>,
        Networking <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        xdp-newbies@vger.kernel.org, brouer@redhat.org,
        Alexei Starovoitov <ast@kernel.org>,
        Jiri Olsa <jolsa@redhat.com>, brouer@redhat.com
Subject: Re: [PATCH] samples/bpf: make xdp_monitor use raw_tracepoints
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On Tue, 15 Oct 2019 21:21:04 -0700
Eric Sage <eric@sage.org> wrote:

> I'm no longer able to build the samples with 'make M=samples/bpf'.
> 
> I get errors in task_fd_query_user.c like:
> 
> samples/bpf/task_fd_query_user.c:153:29: error: ‘PERF_EVENT_IOC_ENABLE’
> undeclared.
> 
> Am I missing a dependancy?

Have you remembered to run:

 make headers_install

(As described in samples/bpf/README)

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer