From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752351AbeERKNO (ORCPT ); Fri, 18 May 2018 06:13:14 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:51085 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751452AbeERKNK (ORCPT ); Fri, 18 May 2018 06:13:10 -0400 X-Google-Smtp-Source: AB8JxZoef48L5SNL97IOEeL3chTim5WESMbe5msovgxk6rMu+OMloZWQkXdM3sXz0l/m1kY86kr8hA== Subject: Re: [PATCH v3 2/2] bpf: add selftest for rawir_event type program To: Sean Young , Y Song Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Alexei Starovoitov , Mauro Carvalho Chehab , Daniel Borkmann , netdev , Matthias Reichl , Devin Heitmueller References: <78945f2bf82e9f16695f72bed3930d1302d38e29.1526504511.git.sean@mess.org> <20180517210140.ck225yuckq6onheb@gofer.mess.org> From: Quentin Monnet Openpgp: preference=signencrypt Autocrypt: addr=quentin.monnet@netronome.com; prefer-encrypt=mutual; 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Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <20180517210140.ck225yuckq6onheb@gofer.mess.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2018-05-17 22:01 UTC+0100 ~ Sean Young > On Thu, May 17, 2018 at 10:17:59AM -0700, Y Song wrote: >> On Wed, May 16, 2018 at 2:04 PM, Sean Young wrote: >>> This is simple test over rc-loopback. >>> >>> Signed-off-by: Sean Young >>> --- >>> tools/bpf/bpftool/prog.c | 1 + >>> tools/include/uapi/linux/bpf.h | 57 +++++++- >>> tools/lib/bpf/libbpf.c | 1 + >>> tools/testing/selftests/bpf/Makefile | 8 +- >>> tools/testing/selftests/bpf/bpf_helpers.h | 6 + >>> tools/testing/selftests/bpf/test_rawir.sh | 37 +++++ >>> .../selftests/bpf/test_rawir_event_kern.c | 26 ++++ >>> .../selftests/bpf/test_rawir_event_user.c | 130 ++++++++++++++++++ >>> 8 files changed, 261 insertions(+), 5 deletions(-) >>> create mode 100755 tools/testing/selftests/bpf/test_rawir.sh >>> create mode 100644 tools/testing/selftests/bpf/test_rawir_event_kern.c >>> create mode 100644 tools/testing/selftests/bpf/test_rawir_event_user.c [...] >> Most people probably not really familiar with lircN device. It would be >> good to provide more information about how to enable this, e.g., >> CONFIG_RC_CORE=y >> CONFIG_BPF_RAWIR_EVENT=y >> CONFIG_RC_LOOPBACK=y >> ...... > > Good point. I'll add some words explaining what is and how to make it work. > > Thanks > Sean By the way, shouldn't the two eBPF helpers bpf_rc_keydown() and bpf_rc_repeat() be compiled out in patch 1 if e.g. CONFIG_BPF_RAWIR_EVENT is not set? There are some other helpers that are compiled only if relevant config options are set (bpf_get_xfrm_state() for example). (If you were to change that, please also update helper documentations to indicate what configuration options are required to be able to use the helpers.) Best regards, Quentin