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=-12.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 71A7DC2D0E4 for ; Wed, 18 Nov 2020 02:46:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 154EA2468E for ; Wed, 18 Nov 2020 02:46:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ou5PCzWu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726325AbgKRCp7 (ORCPT ); Tue, 17 Nov 2020 21:45:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43504 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725771AbgKRCp7 (ORCPT ); Tue, 17 Nov 2020 21:45:59 -0500 Received: from mail-yb1-xb44.google.com (mail-yb1-xb44.google.com [IPv6:2607:f8b0:4864:20::b44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B9F0C0613D4; Tue, 17 Nov 2020 18:45:57 -0800 (PST) Received: by mail-yb1-xb44.google.com with SMTP id o144so256678ybg.7; Tue, 17 Nov 2020 18:45:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ctzLO7RF9R+R6bTNF1JmUiOWUerFkh9IT+Pm9FRZnFU=; b=Ou5PCzWuq7zFcl0mKhzZT65Spu60KPFd5pxQaDMZ5HUdC7PFd6o3d9ED9BO8NX9zDF 3Akc5X6QIZVxbgwFjfxmM/jXF4AYS4nwD5bN1GUlkTlSKkj4plEzVPHjWQlSuKdGZauT D9aBSTMRGMSYvvMvdZRNp49SOpA3WpqknFdZYfNQK/6gtvCKJeaOY6QT4PtxUn+gJMLN fXrnp2W7Y49NGFsPnBMf+oMUVqLpB9alFz5imGVBVrCB6sIsAofQssdpSSo6R2FTjog0 IK5cAUuj0DSFroLu8Gj6TrBWXg5hbZPh/khVT8oGDeMl4kgnp7uKFFAJyItZYgs988Ho KRXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ctzLO7RF9R+R6bTNF1JmUiOWUerFkh9IT+Pm9FRZnFU=; b=SpJV9Af1ffoMYhNPE12e1eqLriPkQqkviC2A0uwAcZLI+fzQ/0NAVoddJNosTVbK6P Q56IPbfX+cwPPXO4gmjoedMTqrvDYqvd41tl6OpnONlZuwZPP6D5gVQLfbypNCfi5j3X +hHdxGEa14JCRVU8aMHWQb25IBZXcDAnASUNnTviduZcqpfFnl/uIdW1DqrU8EDOwZq5 vsKjNjczy8ljDbm3CfGbRHnZxpExhMyq9VRCuZT+DIsPx2DDJmonpK35sMzi9xBGxsAL r0ygy6Vh/P0lGkbSyP+szFdnEiymH2QDqYWYO2oFpDPIrEM5r/dXAhy0Td4tMSKIsVTc U9Dg== X-Gm-Message-State: AOAM531hFexcWdfcn4AZ8B0rjrBSNwUsWYonfypAyEU2Jhu5tMGB7Bjw KlpKvb5EIotsfTaNHymseZQkG4UOwOsd76UfnfI= X-Google-Smtp-Source: ABdhPJyA/Dq30agoFur2L6zlv7I9lxHuKLHSgy8MIeBAuqLcByBxHFU2LcMyugPk//IrsC6US4cJM+bKjMUD1taZUjo= X-Received: by 2002:a25:2845:: with SMTP id o66mr4543777ybo.260.1605667556679; Tue, 17 Nov 2020 18:45:56 -0800 (PST) MIME-Version: 1.0 References: <20201117145644.1166255-1-danieltimlee@gmail.com> <20201117145644.1166255-7-danieltimlee@gmail.com> In-Reply-To: <20201117145644.1166255-7-danieltimlee@gmail.com> From: Andrii Nakryiko Date: Tue, 17 Nov 2020 18:45:45 -0800 Message-ID: Subject: Re: [PATCH bpf-next 6/9] samples: bpf: refactor test_overhead program with libbpf To: "Daniel T. Lee" Cc: Daniel Borkmann , Alexei Starovoitov , Andrii Nakryiko , brakmo , Jesper Dangaard Brouer , Lorenzo Bianconi , David Ahern , Yonghong Song , =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= , Ira Weiny , Thomas Graf , Jakub Kicinski , Martin KaFai Lau , John Fastabend , bpf , Networking , Xdp Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On Tue, Nov 17, 2020 at 6:57 AM Daniel T. Lee wrote: > > This commit refactors the existing program with libbpf bpf loader. > Since the kprobe, tracepoint and raw_tracepoint bpf program can be > attached with single bpf_program__attach() interface, so the > corresponding function of libbpf is used here. > > Rather than specifying the number of cpus inside the code, this commit > uses the number of available cpus with _SC_NPROCESSORS_ONLN. > > Signed-off-by: Daniel T. Lee > --- > samples/bpf/Makefile | 2 +- > samples/bpf/test_overhead_user.c | 82 +++++++++++++++++++++++--------- > 2 files changed, 60 insertions(+), 24 deletions(-) > LGTM. Acked-by: Andrii Nakryiko [...]