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[2620:137:e000::1:20]) by mx.google.com with ESMTP id g3-20020a50d0c3000000b00440367fe313si7080151edf.305.2022.08.08.08.53.59; Mon, 08 Aug 2022 08:54:31 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243685AbiHHPZo convert rfc822-to-8bit (ORCPT + 99 others); Mon, 8 Aug 2022 11:25:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38954 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243700AbiHHPZg (ORCPT ); Mon, 8 Aug 2022 11:25:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9966013F24 for ; Mon, 8 Aug 2022 08:25:35 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3692560FF1 for ; Mon, 8 Aug 2022 15:25:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 05558C433D6; Mon, 8 Aug 2022 15:25:33 +0000 (UTC) Date: Mon, 8 Aug 2022 11:25:35 -0400 From: Steven Rostedt To: Kent Overstreet Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org, pmladek@suse.com, Ingo Molnar Subject: Re: [PATCH v5 31/32] tracing: Convert to printbuf Message-ID: <20220808112535.0c74afc4@gandalf.local.home> In-Reply-To: <55e6e42f-b3ea-d9d0-4611-f13b3b88acab@gmail.com> References: <20220808024128.3219082-1-willy@infradead.org> <20220808024128.3219082-32-willy@infradead.org> <20220807225113.6a74b481@gandalf.local.home> <8e1df054-062f-63c9-16b4-38143f3e7983@gmail.com> <20220808093750.4dd24af2@gandalf.local.home> <55e6e42f-b3ea-d9d0-4611-f13b3b88acab@gmail.com> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 8 Aug 2022 11:15:31 -0400 Kent Overstreet wrote: > > This change is likely to cause subtle regressions for no benefit to the > > tracing subsystem. Hence, when it comes to risk vs reward, I see none. > > It sounds like you're saying you don't have time to maintain your > subsystem..? Is there anyone else actively co-maintaining tracing? Part > of our jobs is bringing new people in and training them (and not > providing a hostile work environment so they'll want to), maybe > something to think about. No, it sounds like there's nothing here I need. Why do I need to review any code that is not going to improve my subsystem? > > I'm also not seeing the likelihood of subtle regressions - this isn't my > first kernel refactoring and not _nearly_ the biggest or the most > invasive. There's definitely some stuff in the tracing code code that is > a bit on the unorthodox side, but nothing too crazy. The code's been in > my tree for ages where I use tracing on a daily basis, and it passes > your test suite (and there was just one bug that made it through to be > caught by the tests, as I mentioned in the cover letter). > > Anyways, if you've got specific, actionable concerns, I'll be happy to > take a look. Otherwise... ¯\_(ツ)_/¯ Like I said. I don't see the improvement. I hate changes for changes sake alone. If there was a real improvement to the system, then I would make the time to look at it. But currently, the only thing I get is that you want this code in. And that's not a high enough bar. As I stated before, and have given talks about. Changes are pulled into Linux, they are never pushed. -- Steve