Messages in this thread | | | From | Lai Jiangshan <> | Subject | [RFC V3 PATCH 00/25] memory,numa: introduce MOVABLE-dedicated node and online_movable for hotplug | Date | Mon, 6 Aug 2012 17:22:54 +0800 |
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A) Introduction:
This patchset adds MOVABLE-dedicated node and online_movable for memory-management.
It is used for anti-fragmentation(hugepage, big-order allocation...), hot-removal-of-memory(virtualization, power-conserve, move memory between systems to make better utilities of memories).
B) User Interface:
When users(big system manager) need config some node/memory as MOVABLE: 1 Use kernelcore_max_addr=XX when boot 2 Use movable_online hotplug action when running We may introduce some more convenient interface, such as movable_node=NODE_LIST boot option.
C) Patches
Patch1-3 Fix problems of the current code.(all related with hotplug) Patch4 cleanup for node_state_attr Patch5 introduce N_MEMORY Patch6-18 use N_MEMORY instead N_HIGH_MEMORY. The patches are separated by subsystem, *these conversions was(must be) checked carefully*. Patch18 also changes the node_states initialization Patch19 Add config to allow MOVABLE-dedicated node Patch20-24 Add kernelcore_max_addr Patch25 Add online_movable and online_kernel
D) changes change V3-v2: Proper nodemask management
change V2-V1:
The original V1 patchset of MOVABLE-dedicated node is here: http://comments.gmane.org/gmane.linux.kernel.mm/78122
The new V2 adds N_MEMORY and a notion of "MOVABLE-dedicated node". And fix some related problems.
The orignal V1 patchset of "add online_movable" is here: https://lkml.org/lkml/2012/7/4/145
The new V2 discards the MIGRATE_HOTREMOVE approach, and use a more straight implementation(only 1 patch).
Lai Jiangshan (21): page_alloc.c: don't subtract unrelated memmap from zone's present pages memory_hotplug: fix missing nodemask management slub, hotplug: ignore unrelated node's hot-adding and hot-removing node: cleanup node_state_attr node_states: introduce N_MEMORY cpuset: use N_MEMORY instead N_HIGH_MEMORY procfs: use N_MEMORY instead N_HIGH_MEMORY memcontrol: use N_MEMORY instead N_HIGH_MEMORY oom: use N_MEMORY instead N_HIGH_MEMORY mm,migrate: use N_MEMORY instead N_HIGH_MEMORY mempolicy: use N_MEMORY instead N_HIGH_MEMORY hugetlb: use N_MEMORY instead N_HIGH_MEMORY vmstat: use N_MEMORY instead N_HIGH_MEMORY kthread: use N_MEMORY instead N_HIGH_MEMORY init: use N_MEMORY instead N_HIGH_MEMORY vmscan: use N_MEMORY instead N_HIGH_MEMORY page_alloc: use N_MEMORY instead N_HIGH_MEMORY change the node_states initialization hotplug: update nodemasks management numa: add CONFIG_MOVABLE_NODE for movable-dedicated node page_alloc: add kernelcore_max_addr mm, memory-hotplug: add online_movable and online_kernel
Yasuaki Ishimatsu (4): x86: get pg_data_t's memory from other node x86: use memblock_set_current_limit() to set memblock.current_limit memblock: limit memory address from memblock memblock: compare current_limit with end variable at memblock_find_in_range_node()
Documentation/cgroups/cpusets.txt | 2 +- Documentation/kernel-parameters.txt | 9 ++ Documentation/memory-hotplug.txt | 24 +++- arch/x86/kernel/setup.c | 4 +- arch/x86/mm/init_64.c | 4 +- arch/x86/mm/numa.c | 8 +- drivers/base/memory.c | 19 ++- drivers/base/node.c | 28 +++-- fs/proc/kcore.c | 2 +- fs/proc/task_mmu.c | 4 +- include/linux/cpuset.h | 2 +- include/linux/memblock.h | 1 + include/linux/memory.h | 2 + include/linux/memory_hotplug.h | 13 ++- include/linux/nodemask.h | 5 + init/main.c | 2 +- kernel/cpuset.c | 32 +++--- kernel/kthread.c | 2 +- mm/Kconfig | 8 ++ mm/hugetlb.c | 24 ++-- mm/memblock.c | 10 +- mm/memcontrol.c | 18 ++-- mm/memory_hotplug.c | 232 ++++++++++++++++++++++++++++++++--- mm/mempolicy.c | 12 +- mm/migrate.c | 2 +- mm/oom_kill.c | 2 +- mm/page_alloc.c | 96 +++++++++------ mm/page_cgroup.c | 2 +- mm/slub.c | 4 +- mm/vmscan.c | 4 +- mm/vmstat.c | 4 +- 31 files changed, 437 insertions(+), 144 deletions(-)
-- 1.7.4.4
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