On 09/27/2012 01:45 PM, we...@cn.fujitsu.com wrote:
From: Wen Congyang
When a memory block is onlined, we will try allocate memory on that node
to store page_cgroup. If onlining the memory block failed, we don't
offline the page cgroup, and we have no chance to offline this page cgroup
unless
On 09/27/2012 02:47 PM, Lai Jiangshan wrote:
The __add_zone() maybe call sleep-able init_currently_empty_zone()
to init wait_table,
But this function also modifies the zone_start_pfn without any lock.
It is bugy.
So we move this modification out, and we ensure the modification
of
On 09/27/2012 02:47 PM, Lai Jiangshan wrote:
Currently memory_hotplug only manages the node_states[N_HIGH_MEMORY],
it forgets to manage node_states[N_NORMAL_MEMORY]. it causes
node_states[N_NORMAL_MEMORY] becomes stale.
We add check_nodemasks_changes_online() and
On 09/27/2012 02:47 PM, Lai Jiangshan wrote:
We found 3 bug while we test and develop memory hotplug.
PATCH1~2: the old code does not handle node_states[N_NORMAL_MEMORY] correctly,
it corrupts the memory.
PATCH3: move the modification of zone_start_pfn into corresponding lock.
please fully
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Yasuaki Ishimatsu
remove_memory() only try to offline pages. It is called in two cases:
1. hot remove a memory device
2. echo offline >/sys/devices/system/memory/memoryXX/state
In the 1st case, we should also change memory block's
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Wen Congyang
The memory device has only one node id. Store the node id when
enable the memory device, and we can reuse it when removing the
memory device.
one question:
if use numa emulation, memory device will associated to one node
On 09/11/2012 10:24 AM, Yasuaki Ishimatsu wrote:
Hi Wen,
2012/09/11 11:15, Wen Congyang wrote:
Hi, ishimatsu
At 09/05/2012 05:25 PM, we...@cn.fujitsu.com Wrote:
From: Yasuaki Ishimatsu
If system supports memory hot-remove, online_pages() may online
removed pages.
So online_pages() need to
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Yasuaki Ishimatsu
We should offline and remove memory when removing the memory device.
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,
On 09/28/2012 11:45 AM, Yasuaki Ishimatsu wrote:
Hi Kosaki-san,
2012/09/28 10:35, KOSAKI Motohiro wrote:
On Thu, Sep 27, 2012 at 8:24 PM, Yasuaki Ishimatsu
wrote:
Hi Chen,
2012/09/27 19:20, Ni zhan Chen wrote:
Hi Congyang,
2012/9/27
From: Yasuaki Ishimatsu
When calling
On 09/28/2012 11:45 AM, Yasuaki Ishimatsu wrote:
Hi Kosaki-san,
2012/09/28 10:35, KOSAKI Motohiro wrote:
On Thu, Sep 27, 2012 at 8:24 PM, Yasuaki Ishimatsu
wrote:
Hi Chen,
2012/09/27 19:20, Ni zhan Chen wrote:
Hi Congyang,
2012/9/27
From: Yasuaki Ishimatsu
When calling
On 09/28/2012 03:29 PM, Lai Jiangshan wrote:
Hi, Chen,
On 09/27/2012 09:19 PM, Ni zhan Chen wrote:
On 09/27/2012 02:47 PM, Lai Jiangshan wrote:
The __add_zone() maybe call sleep-able init_currently_empty_zone()
to init wait_table,
But this function also modifies the zone_start_pfn without
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Yasuaki Ishimatsu
The function get_page_bootmem() may be called more than one time to the same
page. There is no need to set page's type, private if the function is not
the first time called to the page.
Note: the patch is just
On 09/27/2012 01:45 PM, we...@cn.fujitsu.com wrote:
From: Wen Congyang
Wen Congyang (2):
memory-hotplug: clear hwpoisoned flag when onlining pages
memory-hotplug: auto offline page_cgroup when onlining memory block
failed
Again, you should explain these two patches are the new
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Wen Congyang
This patch series aims to support physical memory hot-remove.
The patches can free/remove the following things:
- acpi_memory_info : [RFC PATCH 4/19]
- /sys/firmware/memmap/X/{end, start,
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Wen Congyang
This patch series aims to support physical memory hot-remove.
The patches can free/remove the following things:
- acpi_memory_info : [RFC PATCH 4/19]
- /sys/firmware/memmap/X/{end, start,
On 10/01/2012 12:44 PM, Yasuaki Ishimatsu wrote:
Hi Chen,
2012/09/29 17:19, Ni zhan Chen wrote:
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Wen Congyang
This patch series aims to support physical memory hot-remove.
The patches can free/remove the following things
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Wen Congyang
The function acpi_bus_remove() can remove a acpi device from acpi device.
IIUC, s/acpi device/acpi bus
When a acpi device is removed, we need to call this function to remove
the acpi device from acpi bus. So export
On 09/05/2012 05:25 PM, we...@cn.fujitsu.com wrote:
From: Yasuaki Ishimatsu
All pages of virtual mapping in removed memory cannot be freed, since some pages
used as PGD/PUD includes not only removed memory but also other memory. So the
patch checks whether page can be freed or not.
How to
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