Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751115AbaK0RS0 (ORCPT ); Thu, 27 Nov 2014 12:18:26 -0500 Received: from netrider.rowland.org ([192.131.102.5]:57026 "HELO netrider.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750927AbaK0RSY (ORCPT ); Thu, 27 Nov 2014 12:18:24 -0500 Date: Thu, 27 Nov 2014 12:18:23 -0500 (EST) From: Alan Stern X-X-Sender: stern@netrider.rowland.org To: Geert Uytterhoeven cc: "Rafael J. Wysocki" , Ulf Hansson , Linux PM list , Linux PCI , Linux Kernel Mailing List , ACPI Devel Maling List , Bjorn Helgaas , Kevin Hilman Subject: Re: [PATCH 0/4] PM: Use CONFIG_PM instead of CONFIG_PM_RUNTIME in core code In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 27 Nov 2014, Geert Uytterhoeven wrote: > Hi Rafael, > > On Thu, Nov 27, 2014 at 5:52 PM, Rafael J. Wysocki wrote: > >> I have also tested the two Kconfig options; CONFIG_PM_SLEEP (which > >> selects CONFIG_PM_RUNTIME) and for CONFIG_PM_RUNTIME (with > >> CONFIG_PM_SLEEP unset). > >> > >> That brings me to a raise a question; why do we need to keep these two > >> configurations options? Couldn't we also have CONFIG_PM_RUNTIME to > >> select CONFIG_PM_SLEEP, that will further simplify things? > > > > My plan is different. I'm going to eliminate PM_RUNTIME from the code > > and then replace it with PM as a selectable option. Then, PM_SLEEP will > > select PM (directly) and PM_RUNTIME can be entirely dropped. > > What's your rationale for keeping PM_SLEEP, and not consolidating both > PM_RUNTIME and PM_SLEEP into PM? I.e. what am I missing, still > considering myself a PM newbie? > > > So in the end we'll have one Kconfig option less, which is a win IMO. > > Having two less may be a bigger win ;-) I imagine that Rafael would like to continue supporting platforms that want to have runtime power management but not suspend or hibernation. A number of embedded systems might fall into this category. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/