From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keshavamurthy Anil S Subject: Re: ACPI hotplug Date: Thu, 13 Jan 2005 12:06:20 -0800 Message-ID: <20050113120620.A1002@unix-os.sc.intel.com> References: Reply-To: Keshavamurthy Anil S Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: ; from i_p_a_u_l-/E1597aS9LQAvxtiuMwx3w@public.gmane.org on Thu, Jan 13, 2005 at 03:02:37PM +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Paul Ionescu Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, Keiichiro Tokunaga List-Id: linux-acpi@vger.kernel.org On Thu, Jan 13, 2005 at 03:02:37PM +0100, Paul Ionescu wrote: > Hi, > > I just read that 2.6.11-rc1 does support ACPI hotplug. > What does this really mean ? 2.6.11-rc1 now supports physical CPU hotplug and these eject files were added to support the same. Once the cpu's are logically offlined, they can be physically removed by echoing 1 onto the eject file under _SB/PCI0/LSBX/CPUX/eject. > I found some new files in /sys/firmware: > find /sys/firmware/ | grep eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/USB7/URTH/UPDK/eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/USB0/URTH/UPDK/eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/IDE0/SCND/MSTR/eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/LPC/EC/BAT1/eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/LPC/FDC/FDD0/eject Looks like your DSDT has _EJx methods for many other types of devices, either you can enhance these devices drivers to support user mode eject or you can simply not create "eject" file. > > But what can I do with them, and what else is there for hotplug ? > Does it support docking stations ? Does this "eject" file has any side effects which needs to be addressed, please let me know. -Anil ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt