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1cf35d4771
linux-next/arch/arm
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Linus Torvalds 1cf35d4771 mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts 
The mmu-gather operation 'tlb_flush_mmu()' has done two things: the
actual tlb flush operation, and the batched freeing of the pages that
the TLB entries pointed at.

This splits the operation into separate phases, so that the forced
batched flushing done by zap_pte_range() can now do the actual TLB flush
while still holding the page table lock, but delay the batched freeing
of all the pages to after the lock has been dropped.

This in turn allows us to avoid a race condition between
set_page_dirty() (as called by zap_pte_range() when it finds a dirty
shared memory pte) and page_mkclean(): because we now flush all the
dirty page data from the TLB's while holding the pte lock,
page_mkclean() will be held up walking the (recently cleaned) page
tables until after the TLB entries have been flushed from all CPU's.

Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Dave Hansen <dave.hansen@intel.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-25 16:05:40 -07:00
..
boot arm: Xilinx Zynq DT fixes for v3.15 2014-04-25 11:22:20 +02:00
common ARM: 8032/1: bL_switcher: fix validation check before its activation 2014-04-22 22:23:59 +01:00
configs ARM Versatile Express fixes for 3.15 2014-04-24 23:46:58 +02:00
crypto
firmware ARM: trusted_foundations: implement prepare_idle() 2014-02-18 13:46:46 -07:00
include mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts 2014-04-25 16:05:40 -07:00
kernel File locking related bugfixes for v3.15 (pile #2) 2014-04-25 12:40:32 -07:00
kvm CPU hotplug notifiers registration fixes for 3.15-rc1 2014-04-07 14:55:46 -07:00
lib ARM: 7990/1: asm: rename logical shift macros push pull into lspush lspull 2014-02-25 11:33:57 +00:00
mach-at91 ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-bcm ARM: SoC specific changes 2014-04-05 14:19:54 -07:00
mach-berlin ARM: select HAVE_SMP for V7 multi-platform 2014-02-19 16:43:27 -06:00
mach-clps711x ARM: SoC specific changes 2014-04-05 14:19:54 -07:00
mach-cns3xxx ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-davinci ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
mach-dove ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
mach-ebsa110 ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-efm32 ARM: efm32: drop unused file <mach/timex.h> 2014-02-24 10:07:27 +01:00
mach-ep93xx ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-exynos ARM: SoC: late cleanups 2014-04-05 15:46:37 -07:00
mach-footbridge ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-gemini ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-highbank ARM: select HAVE_SMP for V7 multi-platform 2014-02-19 16:43:27 -06:00
mach-hisi ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-imx ARM: i.MX6: ipu_di_sel clocks can set parent rates 2014-04-15 11:13:22 +08:00
mach-integrator ARM: SoC: late cleanups 2014-04-05 15:46:37 -07:00
mach-iop13xx
mach-iop32x This cleanup series gets rid of <mach/timex.h> for platforms not using 2014-02-24 10:06:56 +01:00
mach-iop33x
mach-ixp4xx ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-keystone ARM: SoC: device tree changes 2014-04-05 15:29:04 -07:00
mach-kirkwood ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
mach-ks8695 ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-lpc32xx ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-mmp ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-moxart ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-msm ARM: SoC specific changes 2014-04-05 14:19:54 -07:00
mach-mv78xx0 ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
mach-mvebu ARM: SoC specific changes 2014-04-05 14:19:54 -07:00
mach-mxs ARM: SoC: device tree changes 2014-04-05 15:29:04 -07:00
mach-netx ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-nomadik ARM: centralize common multi-platform kconfig options 2014-02-19 16:38:18 -06:00
mach-nspire ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-omap1 ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-omap2 ARM: OMAP2+: Fix GPMC remap for devices using an offset 2014-04-23 11:09:22 -07:00
mach-orion5x ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
mach-picoxcell Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP 2014-04-07 16:36:11 -07:00
mach-prima2 Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP 2014-04-07 16:36:11 -07:00
mach-pxa ARM: pxa: hx4700.h: include "irqs.h" for PXA_NR_BUILTIN_GPIO 2014-04-24 15:26:39 +02:00
mach-qcom ARM: qcom: Add SMP support for KPSSv2 2014-02-11 15:00:40 -06:00
mach-realview ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-rockchip ARM: rockchip: fix copy'n'paste error in smp error messages 2014-04-15 11:17:00 +02:00
mach-rpc ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-s3c24xx Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP 2014-04-07 16:36:11 -07:00
mach-s3c64xx ARM: SoC: late cleanups 2014-04-05 15:46:37 -07:00
mach-s5p64x0 ARM: SoC: late cleanups 2014-04-05 15:46:37 -07:00
mach-s5pc100 ARM: SoC: late cleanups 2014-04-05 15:46:37 -07:00
mach-s5pv210 ARM: SoC: late cleanups 2014-04-05 15:46:37 -07:00
mach-sa1100 ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-shmobile ARM: SoC fixes for 3.15-rc3: 2014-04-25 13:02:02 -07:00
mach-socfpga The clock framework changes for 3.15 look similar to past pull requests. 2014-04-05 18:39:18 -07:00
mach-spear ARM Versatile Express fixes for 3.15 2014-04-24 23:46:58 +02:00
mach-sti Merge branch 'cleanup/kconfig' into next/drivers 2014-03-18 16:25:47 +01:00
mach-sunxi ARM: SoC specific changes 2014-04-05 14:19:54 -07:00
mach-tegra ARM: tegra: remove TEGRA_EMC_SCALING_ENABLE 2014-04-24 15:29:12 +02:00
mach-u300 ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-ux500 ARM: SoC: device tree changes 2014-04-05 15:29:04 -07:00
mach-versatile ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
mach-vexpress ARM: vexpress/TC2: Convert OPP voltage to uV before storing 2014-04-24 17:20:50 +01:00
mach-vt8500 ARM: vt8500: enable V6K instead of plain V6 2014-02-19 16:47:16 -06:00
mach-w90x900 ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
mach-zynq ARM: SoC: late cleanups 2014-04-05 15:46:37 -07:00
mm Merge branch 'fixes_for_v3.15' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping 2014-04-24 09:58:57 -07:00
net net: filter: add jited flag to indicate jit compiled filters 2014-03-31 00:45:08 -04:00
nwfpe
oprofile
plat-iop ARM: 8000/1: misc: remove deprecated IRQF_DISABLED 2014-03-12 10:32:38 +00:00
plat-omap ARM: SoC: device tree changes 2014-04-05 15:29:04 -07:00
plat-orion ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
plat-pxa
plat-samsung Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP 2014-04-07 16:36:11 -07:00
plat-versatile ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
tools
vfp ARM: 8026/1: Fix emulation of multiply accumulate instructions 2014-04-14 23:28:24 +01:00
xen xen/grant-table: Refactor gnttab_[un]map_refs to avoid m2p_override 2014-03-18 14:40:19 +00:00
Kconfig ARM: SoC fixes for 3.15-rc3: 2014-04-25 13:02:02 -07:00
Kconfig-nommu
Kconfig.debug ARM: 8024/1: Keep DEBUG_UART_{PHYS,VIRT} entries sorted 2014-04-14 23:28:23 +01:00
Makefile ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00