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=-13.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 5CDA6C433DF for ; Mon, 24 Aug 2020 09:21:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 336832074D for ; Mon, 24 Aug 2020 09:21:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598260897; bh=4i8SYb74lw0to+xykcaHY9CXQFCR4AwZd8LI4lKSvy0=; h=Reply-To:Subject:To:Cc:References:From:Date:In-Reply-To:List-ID: From; b=A6/44VcXD4ocAlJCmYmX7iySZXSa9RrNuV2D3zF7o10SjJa0Exh+Wmaf0sbf7mbFv yk3SvmvBER8jKxFyv8/EyAxgiNJ/33/cN5LaU5HnTmYWR/3pfnUfKNqmGbzIYVVN5x FL6nQmcse9oqaHk3gyXQbOEAT3A8AEG7cJjR2SGM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728554AbgHXJVK (ORCPT ); Mon, 24 Aug 2020 05:21:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:60436 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726337AbgHXJU6 (ORCPT ); Mon, 24 Aug 2020 05:20:58 -0400 Received: from [192.168.0.20] (cpc89244-aztw30-2-0-cust3082.18-1.cable.virginm.net [86.31.172.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C2393206F0; Mon, 24 Aug 2020 09:20:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598260857; bh=4i8SYb74lw0to+xykcaHY9CXQFCR4AwZd8LI4lKSvy0=; h=Reply-To:Subject:To:Cc:References:From:Date:In-Reply-To:From; b=i5qUdXtfIBaryA7ZcrmvqWMXT4HBSx9kdMHJxpXwNZqOgZkTVOJwtgYND2h2Bz+8u 3pf5snY6p3n2wUr/JHR7P5GXcct+AME030/7yR9RPSJQs4S9u87WdH4pHpPhxiaKNz pLoUAKKarB5EdHJGDal5H75zOdRI/FeVgq1GVGHc= Reply-To: kbingham@kernel.org Subject: Re: [PATCH 0/2][next] update gdb scripts for lockless printk ringbuffer To: Jan Kiszka , Petr Mladek , John Ogness Cc: Andrew Morton , Baoquan He , Dave Young , Vivek Goyal , Jonathan Corbet , Sergey Senozhatsky , Sergey Senozhatsky , Steven Rostedt , Linus Torvalds , Greg Kroah-Hartman , Nick Desaulniers , linux-kernel@vger.kernel.org References: <20200814212525.6118-1-john.ogness@linutronix.de> <20200821080813.GM4353@alley> From: Kieran Bingham Autocrypt: addr=kbingham@kernel.org; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Petr, On 21/08/2020 09:55, Jan Kiszka wrote: > On 21.08.20 10:08, Petr Mladek wrote: >> On Fri 2020-08-14 23:31:23, John Ogness wrote: >>> Hi, >>> >>> When we brought in the new lockless printk ringbuffer, we overlooked the gdb >>> scripts. Here are a set of patches to implement gdb support for the new >>> ringbuffer. >>> >>> John Ogness (2): >>> scripts/gdb: add utils.read_ulong() >>> scripts/gdb: update for lockless printk ringbuffer >> >> I am not fluent in the gdb macros and python so I did not try any >> deep review. But both patches work for me: >> >> Tested-by: Petr Mladek >> >> I am going to give it few more days before pushing just in case there is >> another feedback. Before 'pushing' ? What context do you mean here? These patches go through AKPM don't they? Did I miss some update to procedures? >> > > Thanks, perfect! > >> Best Regards, >> Petr >> >> BTW: Are you aware of https://github.com/crash-python/crash-python project? >> The ambition is to implement "crash" features and even more into >> gdb using python extensions. It similar approach like >> scripts/gdb/ >> >> crash-python is being developed sporadically in waves. It is >> mostly during a week that is dedicated for such projects >> at SUSE. It would be great to get more contributors. >> > > The problem with all those out-of-tree kernel debugging projects is that > they are even further away from the changes in upstream they need to > adjust to over and over again. It's already hard for scripts/gdb to keep > up as only few people are aware of the dependencies, and it's always > easy to forget. But it's getting better and better here IMHO. And that > was my idea behind pushing things into upstream. Seconding that, and having also investigated the crash projects in previous work. I really wish there was more alignment to the kernel ;-) /me ponders what happened to the kernel awareness integrations on GDB... I know others have been investigating too, If only I had time ... > Jan > -- -- Kieran