[PATCH 0/2] Add help info for CONFIG_MOVABLE_NODE and disable is by default

[PATCH 0/2] Add help info for CONFIG_MOVABLE_NODE and disable is by default

[Tang Chen]

The first patch adds help info for CONFIG_MOVABLE_NODE option.
The second patch disable this option by default.

Tang Chen (2):
  memory-hotplug: Add help info for CONFIG_MOVABLE_NODE option
  memory-hotplug: Disable CONFIG_MOVABLE_NODE option by default.

 mm/Kconfig |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

-- 
1.7.10.1

[PATCH 0/2] Add help info for CONFIG_MOVABLE_NODE and disable is by default

[Tang Chen]

The first patch adds help info for CONFIG_MOVABLE_NODE option.
The second patch disable this option by default.

Tang Chen (2):
  memory-hotplug: Add help info for CONFIG_MOVABLE_NODE option
  memory-hotplug: Disable CONFIG_MOVABLE_NODE option by default.

 mm/Kconfig |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

-- 
1.7.10.1

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[PATCH 1/2] memory-hotplug: Add help info for CONFIG_MOVABLE_NODE option

[Tang Chen]

This patch adds help info for CONFIG_MOVABLE_NODE option.

This option allows user to online all memory of a node as movable
memory. So that the whole node can be hotpluged. Users who don't
use hotplug feature are also fine with this option on since they
won't online memory as movable.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
---
 mm/Kconfig |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/mm/Kconfig b/mm/Kconfig
index 71259e0..2ad51cb 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -150,6 +150,16 @@ config MOVABLE_NODE
 	depends on X86_64
 	depends on NUMA
 	depends on BROKEN
+	help
+	  Allow a node to have only movable memory. Pages used by kernel, such
+	  as direct mapping pages can not be migrated. So the corresponding
+	  memory device can not be hotpluged. This option allows users to
+	  online all the memory of a node as movable memory so that the whole
+	  node can be hotpluged. Users who don't use hotplug feature are fine
+	  with this option on since they don't online memory as movable.
+
+	  Say Y here if you want to hotplug a whole node.
+	  Say N here if you want kernel to use memory on all nodes evenly.
 
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
-- 
1.7.10.1

[PATCH 1/2] memory-hotplug: Add help info for CONFIG_MOVABLE_NODE option

[Tang Chen]

This patch adds help info for CONFIG_MOVABLE_NODE option.

This option allows user to online all memory of a node as movable
memory. So that the whole node can be hotpluged. Users who don't
use hotplug feature are also fine with this option on since they
won't online memory as movable.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
---
 mm/Kconfig |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/mm/Kconfig b/mm/Kconfig
index 71259e0..2ad51cb 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -150,6 +150,16 @@ config MOVABLE_NODE
 	depends on X86_64
 	depends on NUMA
 	depends on BROKEN
+	help
+	  Allow a node to have only movable memory. Pages used by kernel, such
+	  as direct mapping pages can not be migrated. So the corresponding
+	  memory device can not be hotpluged. This option allows users to
+	  online all the memory of a node as movable memory so that the whole
+	  node can be hotpluged. Users who don't use hotplug feature are fine
+	  with this option on since they don't online memory as movable.
+
+	  Say Y here if you want to hotplug a whole node.
+	  Say N here if you want kernel to use memory on all nodes evenly.
 
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
-- 
1.7.10.1

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[PATCH 2/2] memory-hotplug: Disable CONFIG_MOVABLE_NODE option by default.

[Tang Chen]

This patch set CONFIG_MOVABLE_NODE to "default n" instead of
"depends on BROKEN".

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
---
 mm/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index 2ad51cb..1ed3295 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -149,7 +149,7 @@ config MOVABLE_NODE
 	depends on NO_BOOTMEM
 	depends on X86_64
 	depends on NUMA
-	depends on BROKEN
+	default n
 	help
 	  Allow a node to have only movable memory. Pages used by kernel, such
 	  as direct mapping pages can not be migrated. So the corresponding
-- 
1.7.10.1

[PATCH 2/2] memory-hotplug: Disable CONFIG_MOVABLE_NODE option by default.

[Tang Chen]

This patch set CONFIG_MOVABLE_NODE to "default n" instead of
"depends on BROKEN".

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
---
 mm/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index 2ad51cb..1ed3295 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -149,7 +149,7 @@ config MOVABLE_NODE
 	depends on NO_BOOTMEM
 	depends on X86_64
 	depends on NUMA
-	depends on BROKEN
+	default n
 	help
 	  Allow a node to have only movable memory. Pages used by kernel, such
 	  as direct mapping pages can not be migrated. So the corresponding
-- 
1.7.10.1

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Re: [PATCH 1/2] memory-hotplug: Add help info for CONFIG_MOVABLE_NODE option

[Lai Jiangshan]

On 12/14/2012 05:27 PM, Tang Chen wrote:
> This patch adds help info for CONFIG_MOVABLE_NODE option.
> 
> This option allows user to online all memory of a node as movable
> memory. So that the whole node can be hotpluged. Users who don't
> use hotplug feature are also fine with this option on since they
> won't online memory as movable.
> 
> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
> ---
>  mm/Kconfig |   10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 71259e0..2ad51cb 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -150,6 +150,16 @@ config MOVABLE_NODE
>  	depends on X86_64
>  	depends on NUMA
>  	depends on BROKEN
> +	help
> +	  Allow a node to have only movable memory. Pages used by kernel, such
> +	  as direct mapping pages can not be migrated. So the corresponding
> +	  memory device can not be hotpluged. This option allows users to
> +	  online all the memory of a node as movable memory so that the whole
> +	  node can be hotpluged. Users who don't use hotplug feature are fine
> +	  with this option on since they don't online memory as movable.
> +
> +	  Say Y here if you want to hotplug a whole node.
> +	  Say N here if you want kernel to use memory on all nodes evenly.

Thank you for adding the help text which should have been done by me.

Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>

Re: [PATCH 1/2] memory-hotplug: Add help info for CONFIG_MOVABLE_NODE option

[Lai Jiangshan]

On 12/14/2012 05:27 PM, Tang Chen wrote:
> This patch adds help info for CONFIG_MOVABLE_NODE option.
> 
> This option allows user to online all memory of a node as movable
> memory. So that the whole node can be hotpluged. Users who don't
> use hotplug feature are also fine with this option on since they
> won't online memory as movable.
> 
> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
> ---
>  mm/Kconfig |   10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 71259e0..2ad51cb 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -150,6 +150,16 @@ config MOVABLE_NODE
>  	depends on X86_64
>  	depends on NUMA
>  	depends on BROKEN
> +	help
> +	  Allow a node to have only movable memory. Pages used by kernel, such
> +	  as direct mapping pages can not be migrated. So the corresponding
> +	  memory device can not be hotpluged. This option allows users to
> +	  online all the memory of a node as movable memory so that the whole
> +	  node can be hotpluged. Users who don't use hotplug feature are fine
> +	  with this option on since they don't online memory as movable.
> +
> +	  Say Y here if you want to hotplug a whole node.
> +	  Say N here if you want kernel to use memory on all nodes evenly.

Thank you for adding the help text which should have been done by me.

Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>

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