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Commit ae998ece authored by Sudarshan Rajagopalan's avatar Sudarshan Rajagopalan Committed by Isaac J. Manjarres
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mm/memory_hotplug: Add hot-added memory blocks to ZONE_MOVABLE type



When onlining memory blocks, this option helps to add the target
memory block to ZONE_MOVABLE zone type. For successful offlining,
these memory blocks should belong to 'ZONE_MOVABLE' since it carries
only movable pages. When this option is not set, the default zone
policy is to add the blocks to 'ZONE_NORMAL' which may pin pages.

Change-Id: I7f38a07d3c6817141ec8cce3a910fa7d7d91712d
Signed-off-by: default avatarSudarshan Rajagopalan <sudaraja@codeaurora.org>
[isaacm@codeaurora.org: Use IS_ENABLED() for checking configs]
Signed-off-by: default avatarIsaac J. Manjarres <isaacm@codeaurora.org>
parent e39b3da8
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+19 −0
Original line number Diff line number Diff line
@@ -175,6 +175,25 @@ config MEMORY_HOTPLUG_DEFAULT_ONLINE
	  Say N here if you want the default policy to keep all hot-plugged
	  memory blocks in 'offline' state.

config MEMORY_HOTPLUG_MOVABLE_NODE
        bool "Add hot-added memory blocks to ZONE_MOVABLE type"
        default n
        depends on MEMORY_HOTPLUG
        depends on QCOM_MEM_OFFLINE
        help
	  When onlining memory blocks, this option helps to add the target
	  memory block to ZONE_MOVABLE zone type. For successful offlining,
	  these memory blocks should belong to 'ZONE_MOVABLE' since it carries
	  only movable pages. When this option is not set, the default zone
	  policy is to add the blocks to 'ZONE_NORMAL' which may pin pages.

	  See Documentation/memory-hotplug.txt for more information.

	  Say Y here if you want all hot-added memory blocks to be added to
	  'ZONE_MOVABLE' type.state by default.
	  Say N here if you want the default policy to add all hot-added
	  memory blocks in 'ZONE_NORMAL' type.

config MEMORY_HOTREMOVE
	bool "Allow for memory hot remove"
	select MEMORY_ISOLATION
+1 −1
Original line number Diff line number Diff line
@@ -66,7 +66,7 @@ void put_online_mems(void)
	percpu_up_read(&mem_hotplug_lock);
}

bool movable_node_enabled = false;
bool movable_node_enabled = IS_ENABLED(CONFIG_MEMORY_HOTPLUG_MOVABLE_NODE);

#ifndef CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE
bool memhp_auto_online;