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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 31BF6C4321E for ; Mon, 10 Sep 2018 11:23:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CEFDB20865 for ; Mon, 10 Sep 2018 11:23:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CEFDB20865 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728138AbeIJQRY (ORCPT ); Mon, 10 Sep 2018 12:17:24 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:55540 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727269AbeIJQRY (ORCPT ); Mon, 10 Sep 2018 12:17:24 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 83C7118A; Mon, 10 Sep 2018 04:23:49 -0700 (PDT) Received: from [10.4.12.120] (e107158-lin.emea.arm.com [10.4.12.120]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B96B13F575; Mon, 10 Sep 2018 04:23:48 -0700 (PDT) Subject: Re: [RFC PATCH 3/4] sched/topology: remove smt_gain To: Peter Zijlstra Cc: Vincent Guittot , mingo@redhat.com, linux-kernel@vger.kernel.org References: <1535548752-4434-1-git-send-email-vincent.guittot@linaro.org> <1535548752-4434-4-git-send-email-vincent.guittot@linaro.org> <20180907124252.GM24082@hirez.programming.kicks-ass.net> From: Qais Yousef Message-ID: <477033c2-87e5-0b7e-4263-a8d2e336e050@arm.com> Date: Mon, 10 Sep 2018 12:23:47 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180907124252.GM24082@hirez.programming.kicks-ass.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/09/18 13:42, Peter Zijlstra wrote: > On Wed, Aug 29, 2018 at 03:08:38PM +0100, Qais Yousef wrote: >> It was hard to track the history of this and *why* it's needed. > Yeah, my bad.. > > So at some point I wanted to do dynamic capacity and dynamic smt gain by > using the x86 APERF/MPERF stuff. But it never quite worked and we got > stuck with the remnants. OK thanks for the info. I think that was 10 years ago? With all the code moves and renaming git log -L was getting more difficult to use as I dug deeper in history :p Is this work officially dead then? If yes, it ended up not being useful or just never got around finishing it? Thanks -- Qais Yousef