Mel Gorman 6a33979d5b mm: remove misleading ARCH_USES_NUMA_PROT_NONE ... ARCH_USES_NUMA_PROT_NONE was defined for architectures that implemented _PAGE_NUMA using _PROT_NONE. This saved using an additional PTE bit and relied on the fact that PROT_NONE vmas were skipped by the NUMA hinting fault scanner. This was found to be conceptually confusing with a lot of implicit assumptions and it was asked that an alternative be found. Commit c46a7c81 "x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels" redefined _PAGE_NUMA on x86 to be one of the swap PTE bits and shrunk the maximum possible swap size but it did not go far enough. There are no architectures that reuse _PROT_NONE as _PROT_NUMA but the relics still exist. This patch removes ARCH_USES_NUMA_PROT_NONE and removes some unnecessary duplication in powerpc vs the generic implementation by defining the types the core NUMA helpers expected to exist from x86 with their ppc64 equivalent. This necessitated that a PTE bit mask be created that identified the bits that distinguish present from NUMA pte entries but it is expected this will only differ between arches based on _PAGE_PROTNONE. The naming for the generic helpers was taken from x86 originally but ppc64 has types that are equivalent for the purposes of the helper so they are mapped instead of duplicating code. Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Rik van Riel <riel@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-10-09 22:25:52 -04:00
..
boot	Tinification for 3.18	2014-10-07 08:51:59 -04:00
configs
crypto	Revert "crypto: aesni - disable "by8" AVX CTR optimization"	2014-10-02 14:40:28 +08:00
ia32
include	mm: remove misleading ARCH_USES_NUMA_PROT_NONE	2014-10-09 22:25:52 -04:00
kernel	Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-09 06:30:57 -04:00
kvm	kvm: do not handle APIC access page if in-kernel irqchip is not in use	2014-10-02 19:26:11 +02:00
lguest
lib
math-emu
mm
net
oprofile
pci	PCI updates for v3.17:	2014-09-19 10:50:30 -07:00
platform
power
purgatory
realmode
syscalls	bpf: enable bpf syscall on x64 and i386	2014-09-26 15:05:14 -04:00
tools
um
vdso
video
xen
.gitignore
Kbuild
Kconfig	mm: remove misleading ARCH_USES_NUMA_PROT_NONE	2014-10-09 22:25:52 -04:00
Kconfig.cpu
Kconfig.debug
Makefile	Tinification for 3.18	2014-10-07 08:51:59 -04:00
Makefile_32.cpu
Makefile.um