The Hot-Pluggable field in SRAT suggests if the memory could be
hotplugged while the system is running. Print it as well when
parsing SRAT will help users to know which memory is hotpluggable.
Signed-off-by: Tang Chen
Reviewed-by: Wanpeng Li
---
arch/x86/mm/srat.c | 11 +++
1 files
Since we modify movablecore boot option to support
"movablecore=acpi", this patch adds doc for it.
Signed-off-by: Tang Chen
---
Documentation/kernel-parameters.txt | 10 ++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/Documentation/kernel-paramet
early_ioremap() can only map at most 256KB
at one time. So we use a loop to map the whole initrd file,
and map only 256KB one time.
Signed-off-by: Tang Chen
---
arch/x86/kernel/setup.c|9 ++
drivers/acpi/osl.c | 55
include
tep 1 earlier, right after memblock is ready.
When memblock_x86_fill() is called to fulfill memblock.memory[],
memblock is able to allocate memory.
This patch introduces a new function acpi_root_table_init() to
do step 1, and call this function right after memblock_x86_fill()
is called.
Signed-off-by:
SRAT and fulfill nume_meminfo, synchronize the nid info to
memblock.reserve[] immediately.
Signed-off-by: Tang Chen
Signed-off-by: Vasilis Liaskovitis
---
arch/x86/mm/numa.c | 50 ++
1 files changed, 50 insertions(+), 0 deletions(-)
diff --git a
We reserved hotpluggable memory in memblock at early time. And when memory
initialization is done, we have to free it to buddy system.
This patch free memory reserved by memblock with flag MEMBLK_HOTPLUGGABLE.
Signed-off-by: Tang Chen
Reviewed-by: Wanpeng Li
---
include/linux/memblock.h
SRAT.
Signed-off-by: Tang Chen
---
drivers/acpi/acpica/tbxface.c | 34 ++
drivers/acpi/osl.c| 24
include/acpi/acpixf.h |4
include/linux/acpi.h |4
mm/memory_hotplug.c |
fails. Otherwise, the system
could failed to boot.
Signed-off-by: Yasuaki Ishimatsu
Signed-off-by: Lai Jiangshan
Signed-off-by: Tang Chen
Signed-off-by: Jiang Liu
Reviewed-by: Wanpeng Li
---
arch/x86/mm/numa.c |5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/mm/n
es in
different nodes together.
PXM is the Proximity num provided by SRAT, used to map nid. At such an
early time, we don't have nid, so we reserve PXM in memblock to prevent
merging of different nodes' memory.
Signed-off-by: Tang Chen
---
drivers/acpi
time.
Signed-off-by: Tang Chen
---
drivers/acpi/acpica/tbutils.c | 23 +++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 9d68ffc..37cc5e4 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b
to enable this
functionality. For those who don't use memory hotplug or who don't want
to lose their NUMA performance, just don't specify anything. The kernel
will work as before.
Suggested-by: Kamezawa Hiroyuki
Signed-off-by: Tang Chen
Reviewed-by: Wanpeng Li
---
arch/x86/kernel/setup.c
in the subsequent patches.
Signed-off-by: Tang Chen
---
drivers/acpi/osl.c | 82
1 files changed, 57 insertions(+), 25 deletions(-)
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 91d9f54..4531920 100644
--- a/drivers/acpi/osl.c
In the following patches, we need to call get_ramdisk_{image|size}()
to get initrd file's address and size. So make these two functions
global.
Signed-off-by: Tang Chen
---
arch/x86/include/asm/setup.h |3 +++
arch/x86/kernel/setup.c |4 ++--
2 files changed, 5 insertions(
f the memory in
that node is hotpluggable, we don't reserve it.
Signed-off-by: Tang Chen
---
drivers/acpi/osl.c | 40
1 files changed, 40 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 02a39e2..dfbe6ba 10
)nptr - (long)data;/* data is the cpio file */
@offset is the offset of the next file, not the matching file itself.
This is confused and may cause unnecessary waste of time to debug.
So fix it.
Signed-off-by: Tang Chen
---
lib/earlycpio.c |7 ---
1 files changed, 4 insertions(+), 3
kernel will
arrange hotpluggable memory in SRAT as ZONE_MOVABLE. And if users do this, all
the other movablecore=nn@ss and kernelcore=nn@ss options should be ignored.
For those who don't want this, just specify nothing. The kernel will act as
before.
Signed-off-by: Tang Chen
Reviewed-by: Wanpe
On 06/24/2013 11:51 AM, Tang Chen wrote:
On 06/22/2013 02:25 AM, Tejun Heo wrote:
Hey,
On Fri, Jun 21, 2013 at 05:19:48PM +0800, Tang Chen wrote:
* As memblock allocator can relocate itself. There's no point in
avoiding setting NUMA node while parsing and registering NUMA
topology. Just
On 06/22/2013 02:25 AM, Tejun Heo wrote:
Hey,
On Fri, Jun 21, 2013 at 05:19:48PM +0800, Tang Chen wrote:
* As memblock allocator can relocate itself. There's no point in
avoiding setting NUMA node while parsing and registering NUMA
topology. Just parse and register NUMA info and
Hi tj,
On 06/20/2013 02:17 PM, Tejun Heo wrote:
..
I was suggesting two separate things.
* As memblock allocator can relocate itself. There's no point in
avoiding setting NUMA node while parsing and registering NUMA
topology. Just parse and register NUMA info and later tell it to
On 06/21/2013 02:10 PM, H. Peter Anvin wrote:
On 06/20/2013 11:06 PM, Tang Chen wrote:
Hi hpa,
The build problem has been fixed by Yinghai.
Where? I don't see anything that is obviously a fix in my inbox.
Yinghai resent a new version to fix the problem.
https://lkml.org/lkml/2013
On 06/21/2013 01:19 PM, H. Peter Anvin wrote:
On 06/13/2013 06:02 AM, Tang Chen wrote:
From: Yinghai Lu
No offence, just rebase and resend the patches from Yinghai to help
to push this functionality faster.
Also improve the comments in the patches' log.
So we need a new version of
On 06/20/2013 09:17 PM, Zhang Yanfei wrote:
On 06/20/2013 06:10 PM, Tang Chen wrote:
pageblock_nr_page should be pageblock_nr_pages, and fist is
a typo of first.
Signed-off-by: Tang Chen
---
mm/page_isolation.c |8
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a
pageblock_nr_page should be pageblock_nr_pages, and fist is
a typo of first.
Signed-off-by: Tang Chen
---
mm/page_isolation.c |8
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 383bdbb..0cee10f 100644
--- a/mm
There is no parameter "sync" in address_space_operations->migratepage().
It should be mograte_mode. And the comment is for MIGRATE_ASYNC.
Signed-off-by: Tang Chen
---
include/linux/fs.h |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/f
Fix some wrong comments found when reading code.
Tang Chen (5):
page_isolation: Fix a comment typo in test_pages_isolated()
page_migrate: Fix wrong comment in
address_space_operations->migratepage()
aio: Fix wrong comment in aio_complete()
memblock: Fix wrong comment
Signed-off-by: Tang Chen
---
mm/memory_hotplug.c |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 1ad92b4..12ee2a0 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -220,13 +220,13 @@ void
Remove one redundant "nid" in the comment.
Signed-off-by: Tang Chen
---
mm/memblock.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index c5fad93..a847bfe 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -566,7 +56
ctx->ctx_lock should be ctx->completion_lock.
Signed-off-by: Tang Chen
---
fs/aio.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/aio.c b/fs/aio.c
index 2bbcacf..e4a01fa 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -623,7 +623,7 @@ void aio_complete(struct kiocb
Hi tj, Yinghai,
On 06/19/2013 01:21 AM, Tejun Heo wrote:
Hey, Tang.
On Tue, Jun 18, 2013 at 01:47:16PM +0800, Tang Chen wrote:
[approach]
Parse SRAT earlier before memblock starts to work, because there is a
bit in SRAT specifying which memory is hotpluggable.
I'm not saying this is the
Hi Vasilis, Yinghai,
On 06/19/2013 01:05 AM, Vasilis Liaskovitis wrote:
..
This could be a design problem of part3: if we allow local pagetable memory
to not be offlined but allow the offlining to return successfully, then
hot-remove is going to succeed. But the direct mapped pagetable page
Hi Vasilis,
Thanks for reviewing. :)
On 06/19/2013 12:57 AM, Vasilis Liaskovitis wrote:
..
However, patches 21,22 of part1 and all part3 patches increase kernel usage
of local node memory by putting pagetables local to those nodes. Are these
pagetable pages accounted in part2's memblock_ke
Hi tj,
On 06/18/2013 10:03 AM, Tejun Heo wrote:
..
So, can you please explain why you're doing the above? What are you
trying to achieve in the end and why is this the best approach? This
is all for memory hotplug, right?
Yes, this is all for memory hotplug.
[why]
At early boot time (b
On 06/17/2013 09:58 AM, Jianguo Wu wrote:
Hi Tang,
On 2013/6/13 21:03, Tang Chen wrote:
The following patch-set from Yinghai allocates pagetables to local nodes.
v1: https://lkml.org/lkml/2013/3/7/642
v2: https://lkml.org/lkml/2013/3/10/47
v3: https://lkml.org/lkml/2013/4/4/639
v4: https
Hi Dave,
On 06/14/2013 01:17 AM, Dave Hansen wrote:
On 06/13/2013 06:03 AM, Tang Chen wrote:
+static inline bool is_local_node_data(struct page *page)
+{
+ return (unsigned long)page->lru.next == LOCAL_NODE_DATA;
+}
page->lru is already in a union. Could you please just add
Hi Michal,
Please see below.
On 06/13/2013 10:16 PM, Michal Nazarewicz wrote:
..
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index a85ced9..8a38eef 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -131,6 +131,28 @@ void __next_free_mem_range_rev(u
On 06/14/2013 06:47 AM, Yinghai Lu wrote:
On Thu, Jun 13, 2013 at 11:35 AM, Konrad Rzeszutek Wilk
wrote:
Tang Chen wrote:
From: Yinghai Lu
Prepare to put page table on local nodes.
Move calling of init_mem_mapping() to early_initmem_init().
Rework alloc_low_pages to allocate page table
e, we arrange them as un-hotpluggable.
Signed-off-by: Tang Chen
---
arch/x86/mm/numa.c | 10 ++
include/linux/memblock.h |1 +
mm/memblock.c| 20
3 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x
fails.
Signed-off-by: Yasuaki Ishimatsu
Signed-off-by: Lai Jiangshan
Signed-off-by: Tang Chen
Signed-off-by: Jiang Liu
Reviewed-by: Wanpeng Li
---
arch/x86/mm/numa.c |5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 5adf803..be
Prevent freeing LOCAL_NODE_DATA pages in free_pagetable() instead
of in put_page_bootmem().
Suggested-by: Wu Jianguo
Signed-off-by: Tang Chen
---
arch/x86/mm/init_64.c |8 +++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64
We reserved hotpluggable memory in memblock. And when memory initialization
is done, we have to free it to buddy system.
This patch free memory reserved by memblock with flag MEMBLK_HOTPLUGGABLE.
Signed-off-by: Tang Chen
Reviewed-by: Wanpeng Li
---
include/linux/memblock.h |1 +
mm
h2: As suggested by Wu Jianguo, define a macro to check if a page
cantains local node data.
patch4: As suggested by Wu Jianguo, prevent freeing LOCAL_NODE_DATA
pages in free_pagetable() instead of in put_page_bootmem().
Tang Chen (4):
bootmem, mem-hotplug: Re
The Hot-Pluggable field in SRAT suggests if the memory could be
hotplugged while the system is running. Print it as well when
parsing SRAT will help users to know which memory is hotpluggable.
Signed-off-by: Tang Chen
Reviewed-by: Wanpeng Li
---
arch/x86/mm/srat.c | 11 +++
1 files
Pages marked as LOCAL_NODE_DATA are skipped when we do memory offline.
So we have to skip them again when we do memory online.
Signed-off-by: Tang Chen
---
mm/memory_hotplug.c |5 +
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
numa_register_memblks to numa_check_memblks() after
moving out code of setting memblock nid.
Signed-off-by: Yinghai Lu
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/mm/numa.c | 16 +++-
1 files changed, 7 insertions(+), 9 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86
Since we introduced numa_sync_memblock_nid synchronize nid info in
memblock.reserved[] and numa_meminfo, when numa_meminfo has been
initialized, we need to save the nid into memblock.reserved[] when
we reserve memory.
Reported-by: Vasilis Liaskovitis
Signed-off-by: Tang Chen
---
include/linux
Since we modify movablecore boot option to support
"movablecore=acpi", this patch adds doc for it.
Signed-off-by: Tang Chen
---
Documentation/kernel-parameters.txt |8
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/Documentation/kernel-paramet
From: Yinghai Lu
As requested by hpa, add comments for why we choose 5 to be
the step size shift.
Signed-off-by: Yinghai Lu
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/mm/init.c | 21 ++---
1 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/arch
minfo() logic like this:
Merge blocks with the same hotpluggable type on the same node, holes
between which don't overlap with memory on other nodes.
Signed-off-by: Tang Chen
---
arch/x86/mm/numa.c | 13 +
1 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/arch/x86
Please refer to:
v1: https://lkml.org/lkml/2013/3/7/642
v2: https://lkml.org/lkml/2013/3/10/47
v3: https://lkml.org/lkml/2013/4/4/639
v4: https://lkml.org/lkml/2013/4/11/829
And Yinghai's patch did the following things:
1) Parse SRAT early enough.
2）Allocate pagetable pages in local node.
Ta
mapping pagetable
pages, based on Yinghai's patch.
Signed-off-by: Tang Chen
---
arch/x86/mm/init.c | 16
include/linux/memblock.h |2 ++
mm/memblock.c|6 ++
3 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/arch/x86/mm/init.c b
From: Yinghai Lu
Move node_map_pfn_alignment() to arch/x86/mm as there is no
other user for it.
Will update it to use numa_meminfo instead of memblock.
Signed-off-by: Yinghai Lu
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/mm/numa.c | 50
s the following APIs' prototypes to support it:
- numa_add_memblk()
- numa_add_memblk_to()
And the following callers:
- numaq_register_node()
- dummy_numa_init()
- amd_numa_init()
- acpi_numa_memory_affinity_init() in x86
Signed-off-by: Tang Chen
---
arch/x86/include/asm/numa.h
pages will be skipped. After the iteration
of all page, the block will be set as offline, but the kernel can
still access the pagetable pages. This is user transparent.
v1 -> v2: As suggested by Wu Jianguo , define a
macro to check if a page contains local node data.
Signed-off-by: T
to memblock.reserve[] immediately.
Signed-off-by: Tang Chen
Signed-off-by: Vasilis Liaskovitis
---
arch/x86/mm/numa.c | 49 +
1 files changed, 49 insertions(+), 0 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 05e4443
we can move that numa_meminfo_cover_memory() early.
Also we could change __absent_pages_in_range() to static and use
absent_pages_in_range() directly.
Later we will set memblock nid only once on successful path.
Signed-off-by: Yinghai Lu
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch
-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/mm/numa.c | 11 +++
1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index e448b6f..da2ebab 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -536,12 +536,13 @@ static
From: Yinghai Lu
We could use numa_meminfo directly instead of memblock nid in
node_map_pfn_alignment().
So we could do setting memblock nid later and only do it once
for successful path.
-v2: according to tj, separate moving to another patch.
Signed-off-by: Yinghai Lu
Reviewed-by: Tang Chen
page table will be on low range or local nodes.
Signed-off-by: Yinghai Lu
Cc: Pekka Enberg
Cc: Jacob Shin
Cc: Konrad Rzeszutek Wilk
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/mm/numa.c | 34 +-
1 files changed, 33 insertions(+), 1 deletions
comments about mapping table one by one during copying
per tj.
Signed-off-by: Yinghai
Cc: Rafael J. Wysocki
Cc: linux-a...@vger.kernel.org
Acked-by: Tejun Heo
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
drivers/acpi/osl.c | 26 +++---
1
5d30f
| Author: Tang Chen
| Date: Fri Feb 22 16:33:44 2013 -0800
|
|acpi, memory-hotplug: parse SRAT before memblock is ready
It broke several things, like acpi override and fall back path etc.
This patchset is clean implementation that will parse numa info early.
1. keep the acpi table i
(),
using memory above 4GB is OK.
Signed-off-by: Yinghai Lu
Cc: "Rafael J. Wysocki"
Cc: linux-a...@vger.kernel.org
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
drivers/acpi/osl.c |4
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/dr
original numa_meminfo not changed.
Signed-off-by: Yinghai Lu
Cc: David Rientjes
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/mm/numa.c |6 +++---
arch/x86/mm/numa_emulation.c |2 +-
arch/x86/mm/numa_internal.h |2 ++
3 files changed, 6 insertions(+), 4 deletions
is found by Tang Chen
Signed-off-by: Yinghai Lu
Cc: Fenghua Yu
Acked-by: Tejun Heo
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/kernel/microcode_intel_early.c |8
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86
_data
which tj is not happy with.
Signed-off-by: Yinghai Lu
Cc: Rafael J. Wysocki
Cc: linux-a...@vger.kernel.org
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
drivers/acpi/osl.c | 15 +++
1 files changed, 11 insertions(+), 4 deletions(-)
diff --
.
v3 -> v4: Define the flags with macro directly instead of bit shift.
Suggested-by: Wen Congyang
Suggested-by: Liu Jiang
Signed-off-by: Tang Chen
---
include/linux/memblock.h |4 +++
mm/memblock.c| 55 +
2 files changed, 44 insert
early_initmem_init before init_mem_mapping() to prepare
to use numa_info with it.
Signed-off-by: Yinghai Lu
Cc: Pekka Enberg
Cc: Jacob Shin
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/kernel/setup.c | 24 ++--
1 files changed, 10 insertions(+), 14 deletions
ark this type
of memory.
Signed-off-by: Tang Chen
---
arch/x86/mm/init_64.c |2 +
include/linux/memblock.h | 22 +
include/linux/memory_hotplug.h | 13 -
mm/memblock.c | 52
mm/memory_hotplu
get_ramdisk_size() take a boot_params pointer, so that we can pass
a physical address to code in head_32.S.
Signed-off-by: Yinghai Lu
Acked-by: Tejun Heo
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/include/asm/setup.h |3 +++
arch/x86/kernel/setup.c
numa_init(), as it is only
set in setup_node_data() at last in successful path.
Signed-off-by: Yinghai Lu
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/mm/numa.c | 69 +--
1 files changed, 39 insertions(+), 30 deletions(-)
diff
.
Signed-off-by: Yinghai Lu
Cc: Pekka Enberg
Cc: Jacob Shin
Cc: Konrad Rzeszutek Wilk
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/include/asm/pgtable.h |2 +-
arch/x86/kernel/setup.c|1 -
arch/x86/mm/init.c | 100
off-by: Yinghai
Cc: Pekka Enberg
Cc: Jacob Shin
Cc: Rafael J. Wysocki
Cc: linux-a...@vger.kernel.org
Acked-by: Tejun Heo
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/kernel/setup.c |6 +++---
drivers/acpi/osl.c | 18 +-
ted-by: H. Peter Anvin
Signed-off-by: Yinghai Lu
Cc: "Rafael J. Wysocki"
Cc: Jacob Shin
Cc: Pekka Enberg
Cc: linux-a...@vger.kernel.org
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/include/asm/page_types.h |1 -
arch/x86/kernel/setup.c
.
Signed-off-by: Yinghai Lu
Cc: Rafael J. Wysocki
Cc: linux-a...@vger.kernel.org
Cc: Tony Luck
Cc: Fenghua Yu
Cc: linux-i...@vger.kernel.org
Tested-by: Tony Luck
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/ia64/kernel/setup.c|4 +++-
arch/x86/include/asm/acpi.h |3 ++-
arch
acpi_initrd_override_copy(),
to make sure we are using right address.
Signed-off-by: Yinghai Lu
Cc: Pekka Enberg
Cc: Jacob Shin
Cc: Rafael J. Wysocki
Cc: linux-a...@vger.kernel.org
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/include/asm/setup.h
rs specify "movablecore=acpi" in kernel commandline, the kernel will
use SRAT to arrange ZONE_MOVABLE, and it has higher priority then original
movablecore and kernelcore boot option.
For those who don't want this, just specify nothing.
Signed-off-by: Tang Chen
Reviewed-by: Wanpeng Li
---
freed to buddy when memory initialization
is done.
And also, ensure all the nodes which the kernel resides in are un-hotpluggable.
This idea is from Wen Congyang and Jiang Liu
.
Suggested-by: Jiang Liu
Suggested-by: Wen Congyang
Signed-off-by: Tang Chen
Reviewed-by: Vasilis Liaskovitis
tplug. And also, it can be used by
alloc_low_pages() to obtain nid of the allocated memory.
So in x86, also use CONFIG_NUMA to protect it.
Signed-off-by: Tang Chen
---
arch/x86/mm/numa.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/n
variables, so delay print
during copying.
Signed-off-by: Yinghai Lu
Cc: Pekka Enberg
Cc: Jacob Shin
Cc: Rafael J. Wysocki
Cc: linux-a...@vger.kernel.org
Tested-by: Thomas Renninger
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch/x86/kernel/setup.c |2 +-
drivers/ac
From: Yinghai Lu
Introduce early_initmem_init() to call early_x86_numa_init(),
which will be used to parse numa info earlier.
Later will call init_mem_mapping for all the nodes.
Signed-off-by: Yinghai Lu
Cc: Pekka Enberg
Cc: Jacob Shin
Reviewed-by: Tang Chen
Tested-by: Tang Chen
---
arch
t to lose their NUMA
performance, just don't specify anything. The kernel will work as before.
Suggested-by: Kamezawa Hiroyuki
Signed-off-by: Tang Chen
Reviewed-by: Wanpeng Li
---
include/linux/memory_hotplug.h |3 +++
mm/page_alloc.c| 13 +
2 files cha
Hi Benjamin,
Are you still working on this problem ?
Thanks. :)
On 05/21/2013 10:27 AM, Benjamin LaHaise wrote:
On Tue, May 21, 2013 at 10:07:52AM +0800, Tang Chen wrote:
I'm not saying using two callbacks before and after migration is better.
I don't w
Hi Vasilis,
On 06/03/2013 09:18 PM, Vasilis Liaskovitis wrote:
..
In such an early time, I think we can only get nid from
numa_meminfo. So as I
said above, I'd like to fix this problem by making memblock has correct nid.
And I read the patch below. I think if we get nid from numa_meminfo,
Hi yinghai, HPA,
On 04/12/2013 08:55 AM, Yinghai Lu wrote:
Now we have arch_pfn_mapped array, and max_low_pfn_mapped should not
be used anymore.
I'm rebasing this patch-set to the latest kernel, and improving the
comment. But I didn't find any "arch_pfn_mapped array" in the kernel.
Would you
On 06/03/2013 10:59 AM, Wanpeng Li wrote:
On Fri, May 24, 2013 at 05:29:21PM +0800, Tang Chen wrote:
Arrange hotpluggable memory as ZONE_MOVABLE will cause NUMA performance
decreased
because the kernel cannot use movable memory.
For users who don't use memory hotplug and who don'
Hi Vasilis,
On 06/01/2013 12:24 AM, Vasilis Liaskovitis wrote:
..
+void __init_memblock memblock_mark_kernel_nodes()
+{
+ int i, nid;
+ struct memblock_type *reserved =&memblock.reserved;
+
+ for (i = 0; i< reserved->cnt; i++)
+ if (reserved->regions[i].flags
Hi HPA,
Would you please tell me if this patch-set has been merged
into any tree or branch ?
If not merged, I'll rebased it to the latest kernel and
resend it again. Hope the rebasing will help to push this
patch-set.
Thanks. :)
On 05/22/2013 01:18 PM, H. Peter Anvin wrote:
Sorry, just have b
Hi Li,
On 06/03/2013 09:30 AM, Wanpeng Li wrote:
On Fri, May 24, 2013 at 05:29:15PM +0800, Tang Chen wrote:
There is no flag in memblock to discribe what type the memory is.
s/discribe/describe
OK.
..
+#define MEMBLK_FLAGS_DEFAULT 0
+
MEMBLK_FLAGS_DEFAULT is one of the memblock
e, we arrange them as un-hotpluggable.
Signed-off-by: Tang Chen
---
arch/x86/mm/numa.c |6 ++
include/linux/memblock.h |1 +
mm/memblock.c| 20
3 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/n
.
As noticed by Chen Gong , memblock_alloc_try_nid()
will call panic() if it fails to allocate memory. So we don't need to
check the return value.
Signed-off-by: Yasuaki Ishimatsu
Signed-off-by: Lai Jiangshan
Signed-off-by: Tang Chen
Signed-off-by: Jiang Liu
---
arch/x86/mm/numa.c |7
s the following APIs' prototypes to support it:
- numa_add_memblk()
- numa_add_memblk_to()
And the following callers:
- numaq_register_node()
- dummy_numa_init()
- amd_numa_init()
- acpi_numa_memory_affinity_init() in x86
Signed-off-by: Tang Chen
---
arch/x86/include/asm/numa.h
Pages marked as LOCAL_NODE_DATA are skipped when we do memory offline.
So we have to skip them again when we do memory online.
Signed-off-by: Tang Chen
---
mm/memory_hotplug.c |8 +++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm
The Hot-Pluggable field in SRAT suggests if the memory could be
hotplugged while the system is running. Print it as well when
parsing SRAT will help users to know which memory is hotpluggable.
Signed-off-by: Tang Chen
---
arch/x86/mm/srat.c |9 ++---
1 files changed, 6 insertions(+), 3
Since we modify movablecore boot option to support
"movablecore=acpi", this patch adds doc for it.
Signed-off-by: Tang Chen
---
Documentation/kernel-parameters.txt |8
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/Documentation/kernel-paramet
pages will be skipped. After the iteration
of all page, the block will be set as offline, but the kernel can
still access the pagetable pages. This is user transparent.
Signed-off-by: Tang Chen
---
mm/page_alloc.c | 18 --
mm/page_isolation.c |6 ++
2 files changed
tplug. And also, it can be used by
alloc_low_pages() to obtain nid of the allocated memory.
So in x86, also use CONFIG_NUMA to protect it.
Signed-off-by: Tang Chen
---
arch/x86/mm/numa.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/n
i's patch did the following things:
1) Parse SRAT early enough.
2）Allocate pagetable pages in local node.
Tang Chen (12):
acpi: Print Hot-Pluggable Field in SRAT.
page_alloc, mem-hotplug: Improve movablecore to {en|dis}able using
SRAT.
x86, numa, acpi, memory-hotplug: Introduce hotplug
minfo() logic like this:
Merge blocks with the same hotpluggable type on the same node, holes
between which don't overlap with memory on other nodes.
Signed-off-by: Tang Chen
---
arch/x86/mm/numa.c | 13 +
1 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/arch/x86
ark this type
of memory.
Signed-off-by: Tang Chen
---
arch/x86/mm/init_64.c |2 +
include/linux/memblock.h | 22 +
include/linux/memory_hotplug.h | 13 -
mm/memblock.c | 52
mm/memory_hotplu
Do not free LOCA_NODE_DATAL pages to buddy system because they
were skipped when in offline/online procedures. The memory block
they reside in could have been offlined.
Anyway, this problem should be fixed. Any better idea is welcome.
Tang Chen (4):
bootmem, mem-hotp
In memory hot-remove procedure, we free pagetable pages to buddy system.
But for local pagetable pages, do not free them to buddy system because
they were skipped in offline procedure. The memory block they reside in
could have been offlined, and we won't offline it again.
Signed-off-by:
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