From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1162460AbeBPRvg (ORCPT ); Fri, 16 Feb 2018 12:51:36 -0500 Received: from merlin.infradead.org ([205.233.59.134]:56668 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1162430AbeBPRvf (ORCPT ); Fri, 16 Feb 2018 12:51:35 -0500 Subject: Re: CONFIG_IRQ_TIMINGS? To: Daniel Lezcano , Thomas Gleixner Cc: LKML , X86 ML References: <8ae9d59b-7499-87cd-702f-c722b9a77939@infradead.org> From: Randy Dunlap Message-ID: <80739d7b-b035-05ca-9649-a26f0173eca1@infradead.org> Date: Fri, 16 Feb 2018 09:51:28 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/16/2018 06:54 AM, Daniel Lezcano wrote: > On 16/02/2018 15:16, Thomas Gleixner wrote: >> On Thu, 15 Feb 2018, Randy Dunlap wrote: >> >>> Hi, >>> >>> Is this a dead kconfig symbol? I don't see any Kconfig file that >>> sets/enables it. >>> >>> ./kernel/irq/Makefile:4:obj-$(CONFIG_IRQ_TIMINGS) += timings.o >>> ./kernel/irq/internals.h:#ifdef CONFIG_IRQ_TIMINGS >>> ./kernel/irq/internals.h:#endif /* CONFIG_IRQ_TIMINGS */ >>> ./include/linux/interrupt.h:#ifdef CONFIG_IRQ_TIMINGS > > This feature is not supposed to be selected by the user but by a > subsystem depending on it. This subsystems is not yet ready, this is why > the option is not selectable for now. > > The algorithm using these timings appears to be too heavy for the > kernel, it needs some rework. OK, thanks for the info. -- ~Randy