All are prepared, we can actually introduce N_MEMORY. add CONFIG_MOVABLE_NODE make we can use it for movable-dedicated node
Signed-off-by: Lai Jiangshan <la...@cn.fujitsu.com> --- drivers/base/node.c | 6 ++++++ include/linux/nodemask.h | 4 ++++ mm/Kconfig | 8 ++++++++ mm/page_alloc.c | 3 +++ 4 files changed, 21 insertions(+), 0 deletions(-) diff --git a/drivers/base/node.c b/drivers/base/node.c index 31f4805..4bf5629 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -621,6 +621,9 @@ static struct node_attr node_state_attr[] = { #ifdef CONFIG_HIGHMEM _NODE_ATTR(has_high_memory, N_HIGH_MEMORY), #endif +#ifdef CONFIG_MOVABLE_NODE + _NODE_ATTR(has_memory, N_MEMORY), +#endif }; static struct attribute *node_state_attrs[] = { @@ -631,6 +634,9 @@ static struct attribute *node_state_attrs[] = { #ifdef CONFIG_HIGHMEM &node_state_attr[4].attr.attr, #endif +#ifdef CONFIG_MOVABLE_NODE + &node_state_attr[4].attr.attr, +#endif NULL }; diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index c6ebdc9..4e2cbfa 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -380,7 +380,11 @@ enum node_states { #else N_HIGH_MEMORY = N_NORMAL_MEMORY, #endif +#ifdef CONFIG_MOVABLE_NODE + N_MEMORY, /* The node has memory(regular, high, movable) */ +#else N_MEMORY = N_HIGH_MEMORY, +#endif N_CPU, /* The node has one or more cpus */ NR_NODE_STATES }; diff --git a/mm/Kconfig b/mm/Kconfig index 82fed4e..4371c65 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -140,6 +140,14 @@ config ARCH_DISCARD_MEMBLOCK config NO_BOOTMEM boolean +config MOVABLE_NODE + boolean "Enable to assign a node has only movable memory" + depends on HAVE_MEMBLOCK + depends on NO_BOOTMEM + depends on X86_64 + depends on NUMA + default y + # eventually, we can have this option just 'select SPARSEMEM' config MEMORY_HOTPLUG bool "Allow for memory hot-add" diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 0571f2a..737faf7 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -91,6 +91,9 @@ nodemask_t node_states[NR_NODE_STATES] __read_mostly = { #ifdef CONFIG_HIGHMEM [N_HIGH_MEMORY] = { { [0] = 1UL } }, #endif +#ifdef CONFIG_MOVABLE_NODE + [N_MEMORY] = { { [0] = 1UL } }, +#endif [N_CPU] = { { [0] = 1UL } }, #endif /* NUMA */ }; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/