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=-4.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 1B0E5C433FE for ; Thu, 10 Dec 2020 14:27:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BF61A23E23 for ; Thu, 10 Dec 2020 14:27:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390058AbgLJO1U (ORCPT ); Thu, 10 Dec 2020 09:27:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731718AbgLJO1T (ORCPT ); Thu, 10 Dec 2020 09:27:19 -0500 Received: from mail-qt1-x841.google.com (mail-qt1-x841.google.com [IPv6:2607:f8b0:4864:20::841]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6394EC061793; Thu, 10 Dec 2020 06:26:39 -0800 (PST) Received: by mail-qt1-x841.google.com with SMTP id u21so3707642qtw.11; Thu, 10 Dec 2020 06:26:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=3ng4ID+FM2jUqrNZONA64ob770LHcIUG2qaThMjtYWo=; b=mS4Vy4IyDXA25U6bvb0/TypwovVLWDzbeT5Dvgp9XDkoefmNPRU5zXV+1tnvZcQyfv OGcd06bcpHwNKVd841KCON2RHQxAw5sLflbYtrih+/JWZc1MvG9Zga/7Sw/4gdVsELwi woR0IpOivMH5X4Gn2mCub3b2mYF7nsfq8ReQiPT8hlBTw6KZI2eSVkp82HMCx0M/vL2C XLWSCzCPvopxouk7We+3aMrrmg7CMDpR1xCtipeYzOfJyOFLHzkqDRPavP5DaK1k+Q/M nWBoP+3n04RcGWka8taxOWLCx4dYPy+qMnHfBng3teBUal4QVLUagVcLZAlUUNm/Q8rV RngQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to; bh=3ng4ID+FM2jUqrNZONA64ob770LHcIUG2qaThMjtYWo=; b=Z3oJWGf42WQMXZjkPcwZlu7P0sutOOySSA/64lxgEWaxnjuMayNoXERzrmil6J8zMp /VuLtSLHUX9bMVhn0Lep3Vk8/EEZ6hNfP2RQ4aAUVypz6qeyLF0B/8I+9FT51OYPFk/f 20fju7SnLcEJkFgIe5tlkDl48VOlppN3PggLIXs4MUE8jhngax4RCOtSEbJ7k9g38p81 SM18CwhX5IVU8d/sjIhqXXebNvKwZXvamUw7/TTuMijAg6HOc1KK4HMSAFfvfJ6kLoWC qcPOwpk0itc0riUmSJeqpStV7Q+AtNRt+2ZznyNNt0NNRGlcRxa9dHJfh/1IGPPMoN4Y iN6w== X-Gm-Message-State: AOAM533M9yRTLJqSUILwPspdsBV0PLjRWKA8TYnQTbsh/dIoxn5Jr9f7 exGVYs423W6JF6Z4xv1gfjjEQPoi5xHzFQ== X-Google-Smtp-Source: ABdhPJwHAj1DJJnJI5dhH37w9B1Mx24/0xO2E4UfyVlvP7J1GD/QLCW4JUeeAlGjJCYofnPsZ21Rcg== X-Received: by 2002:ac8:5a90:: with SMTP id c16mr7935568qtc.331.1607610398475; Thu, 10 Dec 2020 06:26:38 -0800 (PST) Received: from localhost ([2600:380:5a4a:42b3:c6ce:6e34:f826:c141]) by smtp.gmail.com with ESMTPSA id i68sm598858qkc.82.2020.12.10.06.26.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Dec 2020 06:26:37 -0800 (PST) Sender: Tejun Heo Date: Thu, 10 Dec 2020 09:26:04 -0500 From: Tejun Heo To: Baolin Wang Cc: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] blk-iocost: Use alloc_percpu_gfp() to simplify the code Message-ID: References: <1ba7a38d5a6186b1e71432ef424c23ba1904a365.1607591591.git.baolin.wang@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On Thu, Dec 10, 2020 at 06:56:45PM +0800, Baolin Wang wrote: > Use alloc_percpu_gfp() with __GFP_ZERO flag, which can remove > some explicit initialization code. __GFP_ZERO is implicit for percpu allocations and local[64]_t's initial states aren't guaranteed to be all zeros on different archs. Thanks. -- tejun