(2014/08/18 12:25), Zhang Zhen wrote:
On 2014/8/16 5:37, Toshi Kani wrote:
On Wed, 2014-08-13 at 12:10 +0800, Zhang Zhen wrote:
Currently memory-hotplug has two limits:
1. If the memory block is in ZONE_NORMAL, you can change it to
ZONE_MOVABLE, but this memory block must be adjacent to ZONE_MOVABLE.
2. If the memory block is in ZONE_MOVABLE, you can change it to
ZONE_NORMAL, but this memory block must be adjacent to ZONE_NORMAL.
With this patch, we can easy to know a memory block can be onlined to
which zone, and don't need to know the above two limits.
Updated the related Documentation.
Change v1 -> v2:
- optimize the implementation following Dave Hansen's suggestion
Signed-off-by: Zhang Zhen <zhenzhang.zhang@xxxxxxxxxx>
---
Documentation/ABI/testing/sysfs-devices-memory | 8 ++++
Documentation/memory-hotplug.txt | 4 +-
drivers/base/memory.c | 62 ++++++++++++++++++++++++++
include/linux/memory_hotplug.h | 1 +
mm/memory_hotplug.c | 2 +-
5 files changed, 75 insertions(+), 2 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory
index 7405de2..2b2a1d7 100644
--- a/Documentation/ABI/testing/sysfs-devices-memory
+++ b/Documentation/ABI/testing/sysfs-devices-memory
@@ -61,6 +61,14 @@ Users: hotplug memory remove tools
http://www.ibm.com/developerworks/wikis/display/LinuxP/powerpc-utils
+What: /sys/devices/system/memory/memoryX/zones_online_to
I think this name is a bit confusing. How about "valid_online_types"?
Thanks for your suggestion.
This patch has been added to -mm tree.
If most people think so, i would like to modify the interface name.
I like Toshi's idea (valid_online_types).
Thanks,
Yasuaki Ishimatsu
If not, let's leave it as it is.
Best regards!
Thanks,
-Toshi
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