From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82F0FC31E44 for ; Fri, 14 Jun 2019 11:32:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5852321537 for ; Fri, 14 Jun 2019 11:32:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=netronome-com.20150623.gappssmtp.com header.i=@netronome-com.20150623.gappssmtp.com header.b="wISeSxpd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727477AbfFNLcO (ORCPT ); Fri, 14 Jun 2019 07:32:14 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:54608 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727314AbfFNLcO (ORCPT ); Fri, 14 Jun 2019 07:32:14 -0400 Received: by mail-wm1-f66.google.com with SMTP id g135so1973122wme.4 for ; Fri, 14 Jun 2019 04:32:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netronome-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=8nVWJoeY39suIIZgzswj4aacVGQOKuAApyinJQUDhzc=; b=wISeSxpdrtKy6YhXKfQtLkE0GD4kqa0Oy/ToMDpugnOr/zje0ASKBMqfYVlwFAJ7g9 qXKsNUHtAnPBZUlTbwYFb8A5Qo5d+LAh2OFvLBIJSpsDjbeow7PfCwXVKA9lHIH5pTOl ytn8W8OncmzZ4Z/wB28QLVHWqJmr0J74T6Z4BUSEI6y+qhdIoIpAU2TLCtOlufQIPRgd pJKe0B4Ub69eLYUbHVNtoo3gERByIWNNtz3dyGwTnmCCRNZjpxm+Rzdhp8ilmSVzo55a 9FDw6931BM5c3Sb4T7JFrD7hdknJooQM1Ph79P9CZiOO/2NLv+03hFFoAHE266bJexg0 gU+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=8nVWJoeY39suIIZgzswj4aacVGQOKuAApyinJQUDhzc=; b=BR6E50LB+9AqoMQYKS26I3RpAYz9U2VMkl30mDjjVjMjA2hJMlPwdA8yZe41/GODia QK68Lt9Zqby2NiSkRuIW0mAYmqYxE4MikAlEpLtCKYgWSj1LCJdFbycAu4sUyQLqMSPN owhhJfwtr4alsIUBEw4Zc8HmI8xRJbGVlpScKRpxiMljaN6/CWodDOgIoqK1FmvI/oX4 wDq9VKObj9i0vpRDWN3scAESV1+Qw2VXwbSRLIyeYcgwxfGGHOCTG5VK5FICEr3jpY+S DTSlcTvWfa+ghPch8HPxSbn30pUoHGC8NeMmQ2rAV4UsNmYh3o2h56n3b9albBJSqYvV 43Iw== X-Gm-Message-State: APjAAAUY3FLnU2WKtMJp0KtIS+JTRTGmQ4WFI+5TVWP99Ag6FqrYnsaI zu1anptgTNfKvzZMghqoUckCXQ== X-Google-Smtp-Source: APXvYqx7OtBYzo+1nZZ0vNBobqP0xzx4kNpGJs1wptqcmSRhSZdVRuabeVA+HC8nOOGivJkQ5uKSxw== X-Received: by 2002:a1c:480a:: with SMTP id v10mr7594045wma.120.1560511931738; Fri, 14 Jun 2019 04:32:11 -0700 (PDT) Received: from [192.168.1.2] ([194.53.186.239]) by smtp.gmail.com with ESMTPSA id y133sm4375771wmg.5.2019.06.14.04.32.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 14 Jun 2019 04:32:11 -0700 (PDT) Subject: Re: [PATCH 10/10] blkcg: implement BPF_PROG_TYPE_IO_COST To: Tejun Heo , axboe@kernel.dk, newella@fb.com, clm@fb.com, josef@toxicpanda.com, dennisz@fb.com, lizefan@huawei.com, hannes@cmpxchg.org Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, kernel-team@fb.com, cgroups@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, kafai@fb.com, songliubraving@fb.com, yhs@fb.com, bpf@vger.kernel.org References: <20190614015620.1587672-1-tj@kernel.org> <20190614015620.1587672-11-tj@kernel.org> From: Quentin Monnet Message-ID: Date: Fri, 14 Jun 2019 12:32:09 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190614015620.1587672-11-tj@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org 2019-06-13 18:56 UTC-0700 ~ Tejun Heo > Currently, blkcg implements one builtin IO cost model - lienar. To > allow customization and experimentation, allow a bpf program to > override IO cost model. > > Signed-off-by: Tejun Heo > --- [...] > diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c > index d672d9086fff..beeac8ac48f3 100644 > --- a/tools/bpf/bpftool/feature.c > +++ b/tools/bpf/bpftool/feature.c > @@ -383,6 +383,9 @@ static void probe_kernel_image_config(void) > /* bpftilter module with "user mode helper" */ > "CONFIG_BPFILTER_UMH", > > + /* Block */ > + "CONFIG_BLK_IO_COST", > + > /* test_bpf module for BPF tests */ > "CONFIG_TEST_BPF", > }; > diff --git a/tools/bpf/bpftool/main.h b/tools/bpf/bpftool/main.h > index 3d63feb7f852..298e53f35573 100644 > --- a/tools/bpf/bpftool/main.h > +++ b/tools/bpf/bpftool/main.h > @@ -74,6 +74,7 @@ static const char * const prog_type_name[] = { > [BPF_PROG_TYPE_SK_REUSEPORT] = "sk_reuseport", > [BPF_PROG_TYPE_FLOW_DISSECTOR] = "flow_dissector", > [BPF_PROG_TYPE_CGROUP_SYSCTL] = "cgroup_sysctl", > + [BPF_PROG_TYPE_IO_COST] = "io_cost", > }; > > extern const char * const map_type_name[]; Hi Tejun, Please make sure to update the documentation and bash completion when adding the new type to bpftool. You probably want something like the diff below. Thanks, Quentin diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst index 228a5c863cc7..0ceae71c07a8 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst @@ -40,7 +40,7 @@ PROG COMMANDS | **lwt_seg6local** | **sockops** | **sk_skb** | **sk_msg** | **lirc_mode2** | | **cgroup/bind4** | **cgroup/bind6** | **cgroup/post_bind4** | **cgroup/post_bind6** | | **cgroup/connect4** | **cgroup/connect6** | **cgroup/sendmsg4** | **cgroup/sendmsg6** | -| **cgroup/sysctl** +| **cgroup/sysctl** | **io_cost** | } | *ATTACH_TYPE* := { | **msg_verdict** | **stream_verdict** | **stream_parser** | **flow_dissector** diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool index 2725e27dfa42..057590611e63 100644 --- a/tools/bpf/bpftool/bash-completion/bpftool +++ b/tools/bpf/bpftool/bash-completion/bpftool @@ -378,7 +378,7 @@ _bpftool() cgroup/connect4 cgroup/connect6 \ cgroup/sendmsg4 cgroup/sendmsg6 \ cgroup/post_bind4 cgroup/post_bind6 \ - cgroup/sysctl" -- \ + cgroup/sysctl io_cost" -- \ "$cur" ) ) return 0 ;; diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c index 1f209c80d906..6ba1d567bf17 100644 --- a/tools/bpf/bpftool/prog.c +++ b/tools/bpf/bpftool/prog.c @@ -1070,7 +1070,7 @@ static int do_help(int argc, char **argv) " sk_reuseport | flow_dissector | cgroup/sysctl |\n" " cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n" " cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n" - " cgroup/sendmsg4 | cgroup/sendmsg6 }\n" + " cgroup/sendmsg4 | cgroup/sendmsg6 | io_cost }\n" " ATTACH_TYPE := { msg_verdict | stream_verdict | stream_parser |\n" " flow_dissector }\n" " " HELP_SPEC_OPTIONS "\n"