x86-64, NUMA: Prepare numa_emulation() for moving NUMA emulation into a separate file

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Update numa_emulation() such that, it

- takes @numa_meminfo and @numa_dist_cnt instead of directly
  referencing the global variables.

- copies the distance table by iterating each distance with
  node_distance() instead of memcpy'ing the distance table.

- tests emu_cmdline to determine whether emulation is requested and
  fills emu_nid_to_phys[] with identity mapping if emulation is not
  used.  This allows the caller to call numa_emulation()
  unconditionally and makes return value unncessary.

- defines dummy version if CONFIG_NUMA_EMU is disabled.

This patch doesn't introduce any behavior change.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>

...

This commit is contained in:

Tejun Heo 2011-02-22 11:10:08 +01:00

parent 69efcc6d90

commit fbe99959d1

1 changed files with 33 additions and 23 deletions

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arch/x86/mm/numa_64.c

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