Received: by 2002:a05:6358:1087:b0:cb:c9d3:cd90 with SMTP id j7csp1172158rwi; Thu, 20 Oct 2022 09:25:02 -0700 (PDT) X-Google-Smtp-Source: AMsMyM5z5Y0NMLivkrkD9GrQYckbzTFKkxojm5x1pJ5Y2wrenPksh12rHQtxoZYZjme4SbNTVNRp X-Received: by 2002:a17:907:2e0b:b0:78d:387d:1579 with SMTP id ig11-20020a1709072e0b00b0078d387d1579mr11516021ejc.761.1666283102726; Thu, 20 Oct 2022 09:25:02 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1666283102; cv=none; d=google.com; s=arc-20160816; b=nZAa3QDGQIrEOwlJ7kXYHxOtaIowlf0eGBicvj8yzrg+541WWF3uIGoxpGMmyNKRq2 Di6/NpbnmWamwklGAqcSLCJH/gd8WgfRfPi5LuCtGUf2V0sjPsHRQypWvPwRFKxzvB3D IUtxgsSjSwZVl0DjAo3s/n3EafWgXzZFZG+khi4txDdGgMgpj8iin+t26WQ+QTDvUjZj jrXXInlFt5kSWOdSDgHm8PtlAuFgQdy4mFiezrBvAmDa79FZOSUBKtAQRqC7SgxtgDSv KDflMA5vNquL5Dxkcp+hIfIdD/oNUigazB0sr9RBfUZA8waNuL5/gyg6aYJnD/f0UpLA jddA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=wbuIj5BWwhO+QwRe3fPDjkNgCUYjXl3mptdvz8UnOJo=; b=i94N+sraquRkddFKNHLApdD9+RmY0SMangCgOosmiyFboyZo6RKZSipnluAsXCVPwH MvKLU6O77HEymofeDq/aII2gcvBqYmVni9VImlaKthz1AzuN1nk7EUCN8DqQ4ZVo8cR1 Wbu4RxvFTzDitVxY21n0uxPun5kiJUbIEmtrpRHNl53iQG9csurxxmlaxxeRlEzpTzzL FS/7aetyfdhOiRzceUqs3zaHea2XMjNwtSWRQcklUaQOrppcWBm7acLdIv0Av7g5qX1J aDjIUINkvF0h5sHn0tw3+tijatYFj+mGoTlzDxPZ8LrB8vo7yBUej0/rdFsHkqldgTQz 8/lA== ARC-Authentication-Results: i=1; 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 Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id e27-20020a50d4db000000b004594ac619b4si15125125edj.245.2022.10.20.09.24.35; Thu, 20 Oct 2022 09:25:02 -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 S229861AbiJTPnr (ORCPT + 99 others); Thu, 20 Oct 2022 11:43:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229449AbiJTPnq (ORCPT ); Thu, 20 Oct 2022 11:43:46 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2BAC1B90DE for ; Thu, 20 Oct 2022 08:43:45 -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 3F8C861C2C for ; Thu, 20 Oct 2022 15:43:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 01027C433D6; Thu, 20 Oct 2022 15:43:43 +0000 (UTC) Date: Thu, 20 Oct 2022 11:43:48 -0400 From: Steven Rostedt To: chensong Cc: mingo@redhat.com, mhiramat@kernel.org, linux-kernel@vger.kernel.org, xiehuan09@gmail.com Subject: Re: [PATCH] trace/ring_buffer: remove unused arguments Message-ID: <20221020114348.40fe9644@gandalf.local.home> In-Reply-To: References: <1666274811-24138-1-git-send-email-chensong_2000@189.cn> <20221020101549.06e3fa5b@gandalf.local.home> 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=US-ASCII Content-Transfer-Encoding: 7bit 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 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 Thu, 20 Oct 2022 23:25:56 +0800 chensong wrote: > > I guess this doesn't hurt. > > I was reading __kprobe_trace_func, store_trace_args stores args in > fbuffer.entry,which is event->array, but at the end, rb_commit uses > fbuffer.buffer instead of event. > > Then i thought, if it's useless, why not just clean it up. I meant your change probably doesn't hurt. -- Steve