lkml.org 
[lkml]   [2012]   [Nov]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH v3 0/3] acpi,memory-hotplug : implement framework for hot removing memory
Date
On Friday, October 26, 2012 06:31:00 PM wency@cn.fujitsu.com wrote:
> From: Wen Congyang <wency@cn.fujitsu.com>
>
> The patch-set implements a framework for hot removing memory.
>
> The memory device can be removed by 2 ways:
> 1. send eject request by SCI
> 2. echo 1 >/sys/bus/pci/devices/PNP0C80:XX/eject
>
> In the 1st case, acpi_memory_disable_device() will be called.
> In the 2nd case, acpi_memory_device_remove() will be called.
> acpi_memory_device_remove() will also be called when we unbind the
> memory device from the driver acpi_memhotplug or a driver initialization
> fails.
>
> acpi_memory_disable_device() has already implemented a code which
> offlines memory and releases acpi_memory_info struct . But
> acpi_memory_device_remove() has not implemented it yet.
>
> So the patch prepares the framework for hot removing memory and
> adds the framework into acpi_memory_device_remove().
>
> The last version of this patchset is here:
> https://lkml.org/lkml/2012/10/19/156
>
> Changelogs from v2 to v3:
> Patch2: rename lock to list_lock
>
> Changelogs from v1 to v2:
> Patch1: use acpi_bus_trim() instead of acpi_bus_remove()
> Patch2: new patch, introduce a lock to protect the list
> Patch3: remove memory too when type is ACPI_BUS_REMOVAL_NORMAL
> Note: I don't send [Patch2-4 v1] in this series because they
> are no logical changes in these 3 patches.
>
> Wen Congyang (2):
> acpi,memory-hotplug: call acpi_bus_trim() to remove memory device
> acpi,memory-hotplug: introduce a mutex lock to protect the list in
> acpi_memory_device
>
> Yasuaki Ishimatsu (1):
> acpi,memory-hotplug : add memory offline code to
> acpi_memory_device_remove()
>
> drivers/acpi/acpi_memhotplug.c | 51 +++++++++++++++++++++++++++++++++---------
> 1 file changed, 41 insertions(+), 10 deletions(-)

All patches in the series applied to the linux-next branch of the linux-pm.git
tree as v3.8 material.

Thanks,
Rafael


--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.


\
 
 \ /
  Last update: 2012-11-02 14:41    [W:1.711 / U:0.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site