From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752901AbeBEMXT (ORCPT ); Mon, 5 Feb 2018 07:23:19 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:38282 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752260AbeBEMXL (ORCPT ); Mon, 5 Feb 2018 07:23:11 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 512326090E Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=cpandya@codeaurora.org Subject: Re: [PATCH] of: cache phandle nodes to decrease cost of of_find_node_by_phandle() To: Frank Rowand , Rob Herring Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <1517429142-25727-1-git-send-email-frowand.list@gmail.com> <5b84a166-c71b-3a41-9e7f-a7624a8441f6@codeaurora.org> <38cdcae5-ec0f-d1be-b024-1990d4387731@gmail.com> <9e23d32f-05a0-ce8a-41f8-9a1a3d66be37@codeaurora.org> <567731e8-8f89-bd6e-c3d4-e36400e69198@codeaurora.org> <0db129ef-ffd8-96fe-46a7-55fb575272e3@gmail.com> From: Chintan Pandya Message-ID: <0a178f4b-75fe-0564-7b0e-596f52fca1dc@codeaurora.org> Date: Mon, 5 Feb 2018 17:53:06 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <0db129ef-ffd8-96fe-46a7-55fb575272e3@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > My question was trying to determine whether the numbers reported above > are for a debug configuration or a production configuration. My reported numbers are from debug configuration. > not a production configuration, I was requesting the numbers for a > production configuration. I'm working on it. But please expect some delay in my response for this. As I mentioned earlier, I need to work with few teams to get these numbers. > show a significant boot time reduction from the patch then there is > less justification for adding complexity to the existing code. I > prefer to use simpler data structures and algorithms __if__ extra > complexity does not provide any advantage. The balance between > complexity and benefits is a core software engineering issue. > Ok > >> I don't have a set up for taking these numbers in perf mode. For >> that, I need to ask some other team and round trip follow ups. In my >> set up, I rely on serial console logging which gets disabled in perf >> mode. >> >>> >>> Thanks, >>> >>> Frank >>> >> >> Chintan > Chintan -- Qualcom India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project