powerpc: support memoryless nodes
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- v1 Latest3 patches 7 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | mm: return NUMA_NO_NODE in local_memory_node if zonelists are not setupmm/ | +2 | 7 replies | |
| 2/3 | powerpc: enable CONFIG_HAVE_PERCPU_NUMA_NODE_IDarch/ arch/ arch/ +1 more | +18 | 1 reply | |
| 3/3 | powerpc: enable CONFIG_HAVE_MEMORYLESS_NODESarch/ | +3 | 0 replies |
Reviews trailers per patch
1 of 3 patches has a Reviewed-by or Acked-by.
| Patch | Christoph Lameter |
|---|---|
| 1/3 | |
| 2/3 | |
| 3/3 | R-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/3] powerpc: support memoryless nodes
We have seen several issues recently on powerpc LPARs with memoryless node NUMA configurations, e.g. (an extreme case):
numactl --hardware
available: 2 nodes (0,3)
node 0 cpus:
node 0 size: 0 MB
node 0 free: 0 MB
node 3 cpus: 0 1 2 3
node 3 size: 8142 MB
node 3 free: 7765 MB
node distances:
node 0 3
0: 10 20 3: 20 10
powerpc doesn't set CONFIG_HAVE_MEMORYLESS_NODES, so we are missing out on a lot of the core-kernel support necessary. This series attempts to fix this by enabling the config option, which requires a few other changes as well.
1/3: mm: return NUMA_NO_NODE in local_memory_node if zonelists are not setup
2/3: powerpc: enable CONFIG_HAVE_PERCPU_NUMA_NODE_ID
3/3: powerpc: enable CONFIG_HAVE_MEMORYLESS_NODES
I have tested this series with Christoph's patch (currently being discussed): http://www.spinics.net/lists/linux-mm/msg69452.html
Thanks,
Nish
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