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Steve Capper b8cd51afe0 arm: mm: enable RCU fast_gup 
Activate the RCU fast_gup for ARM.  We also need to force THP splits to
broadcast an IPI s.t.  we block in the fast_gup page walker.  As THP
splits are comparatively rare, this should not lead to a noticeable
performance degradation.

Some pre-requisite functions pud_write and pud_page are also added.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dann Frazier <dann.frazier@canonical.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2014-10-09 22:26:01 -04:00
..
boot Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-10-08 21:40:54 -04:00
common ARM: edma: Fix configuration parsing for SoCs with multiple eDMA3 CC 2014-08-26 14:49:15 +05:30
configs ARM: SoC defconfig changes for 3.18 2014-10-08 17:38:52 -04:00
crypto ARM: 8125/1: crypto: enable NEON SHA-1 for big endian 2014-08-27 15:44:11 +01:00
firmware
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include arm: mm: enable RCU fast_gup 2014-10-09 22:26:01 -04:00
kernel Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:42:04 -04:00
kvm Fixes and features for 3.18. 2014-10-08 05:27:39 -04:00
lib ARM: 8137/1: fix get_user BE behavior for target variable with size of 8 bytes 2014-09-12 17:38:59 +01:00
mach-at91 ARM: SoC driver updates for 3.18 2014-10-08 17:37:16 -04:00
mach-axxia
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mach-bcm Merge tag 'bcm63138-v4' of http://github.com/brcm/linux into next/soc 2014-09-25 23:50:02 +02:00
mach-berlin
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mach-clps711x ARM: SoC platform changes for 3.18 2014-10-08 17:13:04 -04:00
mach-cns3xxx CNS3xxx: Fix PCIe read size limit. 2014-09-25 23:35:01 +02:00
mach-davinci ARM: SoC DT updates for 3.18 2014-10-08 17:22:23 -04:00
mach-dove
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mach-ebsa110
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mach-efm32
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mach-ep93xx
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mach-exynos Samsung cleanup for 3.18 2014-09-25 23:23:34 +02:00
mach-footbridge
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mach-gemini
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mach-highbank
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mach-hisi ARM: hisi: depend on ARCH_MULTI_V7 2014-10-02 16:40:10 +02:00
mach-imx Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:42:04 -04:00
mach-integrator
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mach-iop13xx
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mach-iop32x
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mach-iop33x
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mach-ixp4xx
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mach-keystone
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mach-ks8695
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mach-lpc32xx ARM: LPC32xx: Fix reset function 2014-09-10 17:25:14 +02:00
mach-mediatek
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mach-meson ARM: meson: add basic support for MesonX SoCs 2014-09-25 17:34:42 +02:00
mach-mmp
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mach-moxart
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mach-msm ARM: msm: Update the references to DEBUG_MSM_UARTx 2014-08-24 20:09:36 +02:00
mach-mv78xx0
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mach-mvebu
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mach-mxs
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mach-netx
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mach-nomadik
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mach-nspire
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mach-omap1
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mach-omap2 ARM: SoC driver updates for 3.18 2014-10-08 17:37:16 -04:00
mach-orion5x ARM: orion5x: Convert pr_warning to pr_warn 2014-09-13 21:29:21 +00:00
mach-picoxcell
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mach-prima2
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mach-pxa ARM: SoC platform changes for 3.18 2014-10-08 17:13:04 -04:00
mach-qcom
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mach-realview
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mach-rockchip ARM: rockchip: enable the AMBA bus 2014-09-02 22:27:26 +02:00
mach-rpc
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mach-s3c24xx ARM: S3C24XX: remove separate restart code 2014-09-14 02:43:09 +09:00
mach-s3c64xx
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mach-s5pv210
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mach-sa1100 ARM: 8136/1: sa1100: add Micro ASIC platform device 2014-09-12 17:39:50 +01:00
mach-shmobile ARM: SoC platform changes for 3.18 2014-10-08 17:13:04 -04:00
mach-socfpga
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mach-spear ARM: spear: Remove references to PLAT_SPEAR_SINGLE 2014-09-05 13:33:41 +02:00
mach-sti
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mach-sunxi ARM: sunxi: Remove sun4i reboot code from mach directory 2014-09-11 21:01:47 +02:00
mach-tegra ARM: tegra: Initialize flow controller from DT 2014-08-26 11:43:55 -06:00
mach-u300
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mach-ux500
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mach-versatile
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mach-vexpress vexpress/spc: fix a build warning on array bounds 2014-08-31 10:22:10 -07:00
mach-vt8500 arm, vt8500, LLVMLlinux: Use mcr instead of mcr% for mach-vt8500 2014-09-26 01:49:03 +02:00
mach-w90x900
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mach-zynq ARM: zynq: Remove useless L2C AUX setting 2014-09-16 12:55:12 +02:00
mm arm: mm: enable RCU fast_gup 2014-10-09 22:26:01 -04:00
net net: bpf: arm: make hole-faulting more robust 2014-09-23 12:40:22 -04:00
nwfpe
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oprofile
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plat-iop
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plat-omap ARM: SoC cleanups for 3.18 2014-10-08 17:06:53 -04:00
plat-orion dsa: Replace mii_bus with a generic host device 2014-09-15 17:24:20 -04:00
plat-pxa ARM: pxa: ssp: provide platform_device_id for PXA3xx 2014-09-19 01:56:02 +08:00
plat-samsung
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plat-versatile
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tools
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vfp
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xen xen/arm: remove mach_to_phys rbtree 2014-09-11 18:11:53 +00:00
Kconfig arm: mm: enable RCU fast_gup 2014-10-09 22:26:01 -04:00
Kconfig-nommu
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Kconfig.debug ARM: SoC platform changes for 3.18 2014-10-08 17:13:04 -04:00
Makefile ARM: SoC platform changes for 3.18 2014-10-08 17:13:04 -04:00