From: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
Currently __remove_section for SPARSEMEM_VMEMMAP does nothing. But even if
we use SPARSEMEM_VMEMMAP, we can unregister the memory_section.
So the patch add unregister_memory_section() into __remove_section().
CC: David Rientjes
offlining memory blocks and checking whether memory blocks are offlined
are very similar. This patch introduces a new function to remove
redundant codes.
CC: David Rientjes rient...@google.com
CC: Jiang Liu liu...@gmail.com
CC: Len Brown len.br...@intel.com
CC: Christoph Lameter c...@linux.com
memory can't be offlined when CONFIG_MEMCG is selected.
For example: there is a memory device on node 1. The address range
is [1G, 1.5G). You will find 4 new directories memory8, memory9, memory10,
and memory11 under the directory /sys/devices/system/memory/.
If CONFIG_MEMCG is selected, we will
From: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
When (hot)adding memory into system, /sys/firmware/memmap/X/{end, start, type}
sysfs files are created. But there is no code to remove these files. The patch
implements the function to remove them.
Note: The code does not free
The patch-set was divided from following thread's patch-set.
https://lkml.org/lkml/2012/9/5/201
The last version of this patchset:
https://lkml.org/lkml/2012/10/23/213
If you want to know the reason, please read following thread.
https://lkml.org/lkml/2012/10/2/83
The patch-set has
For removing memory, we need to remove page table. But it depends
on architecture. So the patch introduce arch_remove_memory() for
removing page table. Now it only calls __remove_pages().
Note: __remove_pages() for some archtecuture is not implemented
(I don't know how to implement it for
From: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
We remove the memory like this:
1. lock memory hotplug
2. offline a memory block
3. unlock memory hotplug
4. repeat 1-3 to offline all memory blocks
5. lock memory hotplug
6. remove memory(TODO)
7. unlock memory hotplug
All memory blocks
This patch introduces a new function try_offline_node() to
remove sysfs file of node when all memory sections of this
node are removed. If some memory sections of this node are
not removed, this function does nothing.
CC: David Rientjes rient...@google.com
CC: Jiang Liu liu...@gmail.com
CC: Len
For hot removing memory, we sholud remove page table about the memory.
So the patch searches a page table about the removed memory, and clear
page table.
CC: David Rientjes rient...@google.com
CC: Jiang Liu liu...@gmail.com
CC: Len Brown len.br...@intel.com
CC: Christoph Lameter c...@linux.com
From: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
For removing memmap region of sparse-vmemmap which is allocated bootmem,
memmap region of sparse-vmemmap needs to be registered by get_page_bootmem().
So the patch searches pages of virtual mapping and registers the pages by
From: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
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 check whether page can be
Hi,
Please correct me if I'm wrong, but I thought that one of the reasons to
bring a board to mainline is that if someone breaks it he/she also fixes
it (at least this is what I tell to the attendees of my trainings).
... but maybe that's not always the case ...
Before the commit[1] it worked,
We call hotadd_new_pgdat() to allocate memory to store node_data. So we
should free it when removing a node.
CC: David Rientjes rient...@google.com
CC: Jiang Liu liu...@gmail.com
CC: Len Brown len.br...@intel.com
CC: Benjamin Herrenschmidt b...@kernel.crashing.org
CC: Paul Mackerras
From: Yasuaki Ishimatsu isimatu.yasu...@jp.fujitsu.com
When a memory is added, we update zone's and pgdat's start_pfn and
spanned_pages in the function __add_zone(). So we should revert them
when the memory is removed.
The patch adds a new function __remove_zone() to do this.
CC: David Rientjes
Jia Hongtao wrote:
+#ifdef CONFIG_SUSPEND
+static int fsl_pci_resume(struct platform_device *pdev)
+{
+ struct pci_controller *hose;
+ struct resource pci_rsrc;
+
+ hose = pci_find_hose_for_OF_device(pdev-dev.of_node);
+ of_address_to_resource(pdev-dev.of_node, 0,
On Fri, Sep 21, 2012 at 12:10 AM, Benjamin Herrenschmidt
b...@kernel.crashing.org wrote:
Hi folks !
The reserve map is, imho, my biggest mistake when coming up with the FDT
format.
The main problem is that it doesn't survive the transition via a real
Open Firmware interface. There is no
On Thu, 2012-11-01 at 15:21 +0100, Grant Likely wrote:
I think this makes sense. Cyril and I are just talking about what he
needs. He wants to set aside per-device reserved regions and would
like to have the ability to reference a particular reserved region
from a device node, probably with a
Most of setup.h should not be exported to userspace, so move it
back. All we are left with is the asm-generic include to pick
up the COMMAND_LINE_SIZE define.
Signed-off-by: Anton Blanchard an...@samba.org
---
Index: b/arch/powerpc/include/asm/setup.h
I noticed a couple of function prototypes for functions that
no longer exist. Remove them.
Signed-off-by: Anton Blanchard an...@samba.org
---
Index: b/arch/powerpc/include/asm/setup.h
===
--- a/arch/powerpc/include/asm/setup.h
+++
On 10/31/2012 05:44 PM, Michael Neuling wrote:
Haren Myneni ha...@linux.vnet.ibm.com wrote:
[PATCH 0/6] powerpc: SMT priority (PPR) save and restore
On P7 systems, users can define SMT priority levels 2,3 and 4 for
processes so that some can run higher priority than the other ones.
In the
On Thu, 2012-11-01 at 11:28 +1030, Rusty Russell wrote:
(This is just for Acks: this won't work without the actual syscall patches,
sitting in my tree for -next at the moment).
Signed-off-by: Rusty Russell ru...@rustcorp.com.au
Acked-by: Benjamin Herrenschmidt b...@kernel.crashing.org
---
There are many cases that Semiconductor is misspelled. The patch
fix these typos.
Signed-off-by: Li Yang le...@freescale.com
---
arch/powerpc/include/asm/dbell.h |2 +-
arch/powerpc/include/asm/fsl_gtm.h|2 +-
arch/powerpc/include/asm/immap_qe.h |2 +-
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