[PATCH V2 0/2] FAULT_AROUND_ORDER patchset performance data for powerpc

Madhavan Srinivasan maddy at linux.vnet.ibm.com
Fri Apr 4 17:27:13 EST 2014

Kirill A. Shutemov with faultaround patchset introduced
vm_ops->map_pages() for mapping easy accessible pages around
fault address in hope to reduce number of minor page faults.

This patchset creates infrastructure to move the FAULT_AROUND_ORDER
to arch/ using Kconfig. This will enable architecture maintainers
to decide on suitable FAULT_AROUND_ORDER value based on
performance data for that architecture. First patch also adds
FAULT_AROUND_ORDER Kconfig element for X86. Second patch list
out the performance numbers for powerpc (platform pseries) and
adds FAULT_AROUND_ORDER Kconfig element for powerpc.

V2 Changes:
  Created Kconfig parameter for FAULT_AROUND_ORDER
  Added check in do_read_fault to handle FAULT_AROUND_ORDER value of 0
  Made changes in commit messages.

Madhavan Srinivasan (2):
  mm: move FAULT_AROUND_ORDER to arch/
  mm: add FAULT_AROUND_ORDER Kconfig paramater for powerpc

 arch/powerpc/platforms/pseries/Kconfig |    5 +++++
 arch/x86/Kconfig                       |    4 ++++
 include/linux/mm.h                     |    9 +++++++++
 mm/memory.c                            |   12 +++++-------
 4 files changed, 23 insertions(+), 7 deletions(-)


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