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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C714CA0ECD for ; Mon, 11 Sep 2023 21:48:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350780AbjIKVlT (ORCPT ); Mon, 11 Sep 2023 17:41:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238017AbjIKNdp (ORCPT ); Mon, 11 Sep 2023 09:33:45 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC284106 for ; Mon, 11 Sep 2023 06:33:40 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17811C433C7; Mon, 11 Sep 2023 13:33:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694439220; bh=APU2rPvlGKCplyNOf9MqgAq8riADofmCL/OcF9UgtlI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nK5vpPfwAsRAvZIb7byyRWUcdpDE0kiAJtjj1532mUTsQUnMAzBBvUD8TBk+LUQam 3TwWw0FTo6eTDswb3XKQvGrlBGGVtnjxjEZJ78esauddI4ZfHcw8UoGPOqudNtlis6 jLsIBkMYzs1d+6EMgP30ETLYpb+BtczeCags/2NI= Date: Mon, 11 Sep 2023 15:33:36 +0200 From: Greg Kroah-Hartman To: Linyu Yuan Cc: Thinh Nguyen , Peter Chen , Pawel Laszczak , Roger Quadros , Linus Walleij , Chunfeng Yun , Neal Liu , Cristian Birsan , Bin Liu , Kevin Cernekee , Justin Chen , Al Cooper , Li Yang , Vladimir Zapolskiy , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Philipp Zabel , Herve Codina , hierry Reding , Jonathan Hunter , Michal Simek , Rui Miguel Silva , Valentina Manea , Shuah Khan , Hongren Zheng , linux-usb@vger.kernel.org Subject: Re: [PATCH v2 10/11] usb: mtu3: trace: reduce buffer usage of trace event Message-ID: <2023091157-kiwi-skydiver-b030@gregkh> References: <20230911112446.1791-1-quic_linyyuan@quicinc.com> <20230911112446.1791-11-quic_linyyuan@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230911112446.1791-11-quic_linyyuan@quicinc.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Mon, Sep 11, 2023 at 07:24:45PM +0800, Linyu Yuan wrote: > Save u32 members into trace event ring buffer and parse it for possible > bit information. Reduce it by how much? And now you are parsing, which takes more time right? Why is this change needed? I just picked one of the patches in the series here, you need to be able to answer this for all of them. thanks, greg k-h