From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933883AbXDASwa (ORCPT ); Sun, 1 Apr 2007 14:52:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933888AbXDASwa (ORCPT ); Sun, 1 Apr 2007 14:52:30 -0400 Received: from smtpout.mac.com ([17.250.248.183]:56984 "EHLO smtpout.mac.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933883AbXDASw3 (ORCPT ); Sun, 1 Apr 2007 14:52:29 -0400 In-Reply-To: References: Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <2E204ACD-E697-42C6-8F01-22C1B7B4A85B@mac.com> Cc: Linux Kernel Mailing List , Alan Cox , Sam Ravnborg , Andrew Morton Content-Transfer-Encoding: 7bit From: Kyle Moffett Subject: Re: [PATCH 07/16] kconfig-dynamic-frequency.diff Date: Sun, 1 Apr 2007 14:52:15 -0400 To: Jan Engelhardt X-Mailer: Apple Mail (2.752.2) X-Brightmail-Tracker: AAAAAA== X-Brightmail-scanned: yes Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Apr 01, 2007, at 14:42:59, Jan Engelhardt wrote: > But I would have to ask: Why do we need 100/250/300/1000 if there > is anyway an input field for the user to enter - s/he should read > the help text for Known Good values, should not s/he? Actually, probably what should be done is make the "HZ_CUSTOM" option depend on EXPERIMENTAL/ EMBEDDED/"EXPERT"/"I_KNOW_WHAT_THE_HELL_IM_DOING" or some other equivalent option, because a wrong choice for HZ has the potential to really screw up a system. For example, 10000+ would make most systems spend a significant portion of their time processing timer interrupts and context switches, and less than 100 or so would make the system seem jerky. The point is to encourage the average kernel builder not to change from one of the default options unless they really know what they're doing. Cheers, Kyle Moffett