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=-20.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 51EC2C43603 for ; Wed, 10 Mar 2021 15:19:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24BA764F96 for ; Wed, 10 Mar 2021 15:19:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233104AbhCJPTP (ORCPT ); Wed, 10 Mar 2021 10:19:15 -0500 Received: from elvis.franken.de ([193.175.24.41]:42325 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231150AbhCJPS5 (ORCPT ); Wed, 10 Mar 2021 10:18:57 -0500 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1lK0bw-00088y-05; Wed, 10 Mar 2021 16:18:56 +0100 Received: by alpha.franken.de (Postfix, from userid 1000) id 411B9C1D54; Wed, 10 Mar 2021 16:09:41 +0100 (CET) Date: Wed, 10 Mar 2021 16:09:41 +0100 From: Thomas Bogendoerfer To: Tiezhu Yang Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Xuefeng Li Subject: Re: [PATCH] MIPS: Enable some missed configs in loongson3_defconfig to support bpftrace Message-ID: <20210310150941.GF12960@alpha.franken.de> References: <1615186098-2643-1-git-send-email-yangtiezhu@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1615186098-2643-1-git-send-email-yangtiezhu@loongson.cn> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 08, 2021 at 02:48:18PM +0800, Tiezhu Yang wrote: > bpftrace is a high-level tracing language for Linux enhanced Berkeley > Packet Filter (eBPF) available in recent Linux kernels (4.x). bpftrace > uses LLVM as a backend to compile scripts to BPF-bytecode and makes use > of BCC for interacting with the Linux BPF system, as well as existing > Linux tracing capabilities: kernel dynamic tracing (kprobes), user-level > dynamic tracing (uprobes), and tracepoints. > > According to Linux Kernel Requirements in bpftrace/INSTALL.md [1], the > kernel needs to be built with the following options: > > CONFIG_BPF=y > CONFIG_BPF_SYSCALL=y > CONFIG_BPF_JIT=y > CONFIG_HAVE_EBPF_JIT=y > CONFIG_BPF_EVENTS=y > CONFIG_FTRACE_SYSCALLS=y > CONFIG_FUNCTION_TRACER=y > CONFIG_HAVE_DYNAMIC_FTRACE=y > CONFIG_DYNAMIC_FTRACE=y > CONFIG_HAVE_KPROBES=y > CONFIG_KPROBES=y > CONFIG_KPROBE_EVENTS=y > CONFIG_ARCH_SUPPORTS_UPROBES=y > CONFIG_UPROBES=y > CONFIG_UPROBE_EVENTS=y > CONFIG_DEBUG_FS=y > > So enable some missed configs in loongson3_defconfig to make sure > the above configs are set after make loongson3_defconfig. > > [1] https://github.com/iovisor/bpftrace/blob/master/INSTALL.md > > Signed-off-by: Tiezhu Yang > --- > arch/mips/configs/loongson3_defconfig | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]