diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 23 |
1 files changed, 7 insertions, 16 deletions
@@ -20,7 +20,7 @@ config FLATMEM_MANUAL Some users of more advanced features like NUMA and memory hotplug may have different options here. - DISCONTIGMEM is a more mature, better tested system, + DISCONTIGMEM is an more mature, better tested system, but is incompatible with memory hotplug and may suffer decreased performance over SPARSEMEM. If unsure between "Sparse Memory" and "Discontiguous Memory", choose @@ -153,18 +153,11 @@ config MOVABLE_NODE help Allow a node to have only movable memory. Pages used by the kernel, such as direct mapping pages cannot be migrated. So the corresponding - memory device cannot be hotplugged. This option allows the following - two things: - - When the system is booting, node full of hotpluggable memory can - be arranged to have only movable memory so that the whole node can - be hot-removed. (need movable_node boot option specified). - - After the system is up, the option allows users to online all the - memory of a node as movable memory so that the whole node can be - hot-removed. - - Users who don't use the memory hotplug feature are fine with this - option on since they don't specify movable_node boot option or they - don't online memory as movable. + memory device cannot be hotplugged. This option allows users to + online all the memory of a node as movable memory so that the whole + node can be hotplugged. Users who don't use the memory 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. @@ -218,11 +211,9 @@ config SPLIT_PTLOCK_CPUS int default "999999" if ARM && !CPU_CACHE_VIPT default "999999" if PARISC && !PA20 + default "999999" if DEBUG_SPINLOCK || DEBUG_LOCK_ALLOC default "4" -config ARCH_ENABLE_SPLIT_PMD_PTLOCK - boolean - # # support for memory balloon compaction config BALLOON_COMPACTION |