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=-6.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=no 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 2D132C4363C for ; Wed, 7 Oct 2020 21:26:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D67CB20882 for ; Wed, 7 Oct 2020 21:26:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="hL+84d7C" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728605AbgJGV0B (ORCPT ); Wed, 7 Oct 2020 17:26:01 -0400 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:7969 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727798AbgJGV0A (ORCPT ); Wed, 7 Oct 2020 17:26:00 -0400 Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Wed, 07 Oct 2020 14:25:48 -0700 Received: from [10.25.78.23] (172.20.13.39) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 7 Oct 2020 21:25:56 +0000 Subject: Re: [net-next 01/15] net/mlx5: DR, Add buddy allocator utilities To: David Miller CC: , , , , , References: <20200928.144149.790487567012040407.davem@davemloft.net> <20201006.074715.742357947812105732.davem@davemloft.net> From: Yevgeny Kliteynik Message-ID: <46d7768f-033b-c61f-f2a8-c38239b9d547@nvidia.com> Date: Thu, 8 Oct 2020 00:25:50 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.3.1 MIME-Version: 1.0 In-Reply-To: <20201006.074715.742357947812105732.davem@davemloft.net> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Originating-IP: [172.20.13.39] X-ClientProxiedBy: HQMAIL107.nvidia.com (172.20.187.13) To HQMAIL107.nvidia.com (172.20.187.13) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1602105948; bh=sZvMH9LdrRcfe5RvGb09sBCcHPkZfkyWS8wDFe2a6U4=; h=Subject:To:CC:References:From:Message-ID:Date:User-Agent: MIME-Version:In-Reply-To:Content-Type:Content-Language: Content-Transfer-Encoding:X-Originating-IP:X-ClientProxiedBy; b=hL+84d7CIvdxp3aPK8r97vp4ikgZeIPQuRP1eQgs/gqDXvKr9DJpL7Dj0WfwHk8i4 0KUhS19B/5jymH92Ta+fiCDAFAWrXE/pIaEkeiJLLEVXX6Z5YoxYioVLP06QuvbP70 CVh6Hd4dVDQERzTO6hb1aGQjoKdfsL2Ee5h7Cv90Hliw674gK98qY03AP3+eVJP+sj 5WgYvLT2IacGQHjyZvd5u6bbMbwdEDjdixT7xNN+S5qHQEKsh4Vkv7ZBusX9zknnhD R4x4NSovfcp0mIH15C1ipRB3XwS2xTETZEKo2VEDotyTiZdwPn2CNTl6hpw0zjVajS CnatGPbrF8Zxg== Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 06-Oct-20 17:47, David Miller wrote: > From: Yevgeny Kliteynik > Date: Tue, 6 Oct 2020 16:02:24 +0300 > >> Buddy allocator allocates blocks of different sizes, so when it >> scans the bits array, the allocator looks for free *area* of at >> least the required size. >> Can't store this info in a 'lowest set bit' counter. > > If you make it per-order, why not? OK, I=E2=80=99ll send the V2 series with the standard allocator. The optimization will be handled in a separate patch later on. Thanks