Received: by 2002:a25:e74b:0:0:0:0:0 with SMTP id e72csp408500ybh; Wed, 22 Jul 2020 03:50:24 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxlSUpXgTO302kzZX/gbJhx9N4QteuIFO4nIiqfA2w7PehPgeA+Yd4BYcOHy3SFJl5lRqZi X-Received: by 2002:a05:6402:2c2:: with SMTP id b2mr29901029edx.184.1595415024321; Wed, 22 Jul 2020 03:50:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1595415024; cv=none; d=google.com; s=arc-20160816; b=mkJSTYKP+6Nh9wCWeS1Mw/liWiJRo+bgKV7iZDVp0tc06cnsV4c4fCeTCjS5BeE7QI MuTn6bVdKUv/GQxgMMbR667r9Ab+gnSeN0GOX5m4frPVVA4vNs7x9eWHG8GSQWBgclcP 2fE3HadgrsTqNSf/Rx8NoIProNdr2NBHsVeLdDhG+NFr1sJF1D4Utc0Hw/e8ho717p5u /Ysi1L8Y4YLfH9FpZB7Qz9MGCgvWfAd4LnD9bfbZPXQiuGlfPdVm4GDawyCVJ/TiDVXE dG65lR/DVL8UiJZpQVgYdOTU89Ir3ooWfioQNnjKlOnDGWaO3nfUaEjKEWr0SsL4r5fk Hl5A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=/JFAfAGoRi20oI+32U9KcQR52nScHUoF72dHcMA0Wg8=; b=VQ2FknArifWYP+iHN5ik0i+8P4rsMcqCpG+z/nKNReSWVS9vTnAfnBSWwhP3wqqqGt egCvGXUxYZ2DDdgwmKJN3Yu4HVY2a/dXc02y8dAA9sotjoIYltPWUr2Qz3x2URZfZE1J K4iQ/9+sS4bjt1hKFdm+r9pHeNqmQh/jmmwLfrMbH8RAiBkuIxzGboXaLdwMGQqKrKfB J+06KPlG/M+JNUbdvtXFVcqyWJWnV4fubp+kJ43Us5Acs7q6kUoJtJRdARqciOliyI9S IFXSQT5eowI/dHxCROmAGQVQgl6Tio+7ZwcxGeqXdPazCx/ZDSTdm2hThXlhuIBOrlVZ CXNw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=mtYYHdzE; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id by7si13690332edb.303.2020.07.22.03.50.01; Wed, 22 Jul 2020 03:50:24 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=mtYYHdzE; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726503AbgGVKtr (ORCPT + 99 others); Wed, 22 Jul 2020 06:49:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:52672 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726028AbgGVKtq (ORCPT ); Wed, 22 Jul 2020 06:49:46 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id F0495206F5; Wed, 22 Jul 2020 10:49:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595414986; bh=UFWHvGoRpD0FNixhvW+CszXqh9w0CID6irHRprUemH8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mtYYHdzElRk+jm4uGZT1eQm0wNWHl1/pX2xtTXzEdxUEiKAJil7WkechSbrbFcJpt D34VODvPM8VBMAUBa+5u03G5/6cPkKmhfsbxrfvo9pqwofIMkWkPHtdPDVLG5eRVRJ I6V6tYf8Ydx8G3d6n9nvXNkB6Z3I8SZPLKz43A0I= Date: Wed, 22 Jul 2020 12:49:52 +0200 From: Greg KH To: Yue Hu Cc: jslaby@suse.com, linux-kernel@vger.kernel.org, huyue2@yulong.com, zbestahu@163.com Subject: Re: [PATCH] sysrq: use only one slot for loglevels in key table Message-ID: <20200722104952.GB2827860@kroah.com> References: <20200722092610.11504-1-zbestahu@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200722092610.11504-1-zbestahu@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 22, 2020 at 05:26:09PM +0800, Yue Hu wrote: > From: Yue Hu > > Currently, sysrq_key_table[] has 10 slots for same interface to change > console loglevel. No specific purpose to do that. Let's use only one slot > to save memory space. Also, update the key2index calculation. And remove > needless code in help message print path to make the logic simpler. That sounds like a lot of different things being all done at once. Can you break this up into individual patches, each only doing one type of thing at a time. And if you are saving memory, please show how much you really are saving. thanks, greg k-h