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Leif Lindholm 64d2dc384e ARM: 6396/1: Add SWP/SWPB emulation for ARMv7 processors 
The SWP instruction was deprecated in the ARMv6 architecture,
superseded by the LDREX/STREX family of instructions for
load-linked/store-conditional operations. The ARMv7 multiprocessing
extensions mandate that SWP/SWPB instructions are treated as undefined
from reset, with the ability to enable them through the System Control
Register SW bit.

This patch adds the alternative solution to emulate the SWP and SWPB
instructions using LDREX/STREX sequences, and log statistics to
/proc/cpu/swp_emulation. To correctly deal with copy-on-write, it also
modifies cpu_v7_set_pte_ext to change the mappings to priviliged RO when
user RO.

Signed-off-by: Leif Lindholm <leif.lindholm@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 		2010-11-04 15:45:24 +00:00
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ABI Merge 'staging-next' to Linus's tree 2010-10-28 09:44:56 -07:00
DocBook Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb 2010-10-29 11:49:38 -07:00
PCI
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RCU
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accounting delay-accounting: reimplement -c for getdelays.c to report information on a target command 2010-10-27 18:03:17 -07:00
acpi
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aoe
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arm ARM: 6396/1: Add SWP/SWPB emulation for ARMv7 processors 2010-11-04 15:45:24 +00:00
auxdisplay
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blackfin
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block Merge branch 'v2.6.36-rc8' into for-2.6.37/barrier 2010-10-19 09:13:04 +02:00
blockdev
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cdrom
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cgroups cgroup: add clone_children control file 2010-10-27 18:03:09 -07:00
connector
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console
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cpu-freq
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cpuidle
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cris
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crypto
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development-process
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device-mapper
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driver-model
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dvb [media] lmedm04: driver for DM04/QQBOX updated to version 1.60 2010-10-22 22:22:47 -02:00
early-userspace
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fault-injection
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fb Merge branch 'viafb-next' of git://github.com/schandinat/linux-2.6 2010-10-27 19:02:41 -07:00
filesystems locks: remove fl_copy_lock lock_manager operation 2010-10-31 06:35:15 -07:00
firmware_class
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frv
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hwmon hwmon: (it87) Add support for the IT8721F/IT8758E 2010-10-28 20:31:51 +02:00
i2c i2c-i801: Add PCI idents for Patsburg 'IDF' SMBus controllers 2010-10-31 21:07:00 +01:00
i2o
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ia64
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ide
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infiniband
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input
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ioctl Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6 2010-10-28 12:13:00 -07:00
isdn
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ja_JP
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kbuild Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2010-10-28 16:18:59 -07:00
kdump
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ko_KR
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kvm KVM: Document that KVM_GET_SUPPORTED_CPUID may return emulated values 2010-10-24 10:52:48 +02:00
laptops
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lguest Merge branch 'v2.6.36-rc8' into for-2.6.37/barrier 2010-10-19 09:13:04 +02:00
m68k
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make
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mips
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misc-devices Documentation: short descriptions for bh1770glc and apds990x drivers 2010-10-26 16:52:14 -07:00
mmc
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mn10300
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mtd
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namespaces
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netlabel
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networking phylib: make local function static 2010-10-24 15:07:11 -07:00
parisc
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pcmcia
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power PM: Introduce library for device-specific OPPs (v7) 2010-10-17 01:57:50 +02:00
powerpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2010-10-22 20:30:48 -07:00
pps
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prctl
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s390
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scheduler
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scsi [SCSI] megaraid_sas: Version and documentation update 2010-10-26 11:11:12 -05:00
serial
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sh
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sound Merge branch 'topic/hda' into for-linus 2010-10-25 10:40:05 +02:00
sparc
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spi
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sysctl doc: clarify the behaviour of dirty_ratio/dirty_bytes 2010-10-27 18:03:08 -07:00
telephony
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thermal
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timers Documentation/timers/hpet_example.c: add supporting info for hpet_example 2010-10-26 16:52:11 -07:00
trace tracing, vmscan: add trace events for LRU list shrinking 2010-10-26 16:52:07 -07:00
uml
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usb USB: teach "devices" file about Wireless and SuperSpeed USB 2010-10-22 10:21:40 -07:00
video4linux [media] Support for Elgato Video Capture 2010-10-22 20:55:43 -02:00
vm mm: highmem documentation 2010-10-26 16:52:08 -07:00
w1
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watchdog
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wimax
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x86 Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-22 08:54:21 -07:00
zh_CN
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.gitignore
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00-INDEX
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BUG-HUNTING
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Changes
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CodingStyle
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DMA-API-HOWTO.txt
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DMA-API.txt
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DMA-ISA-LPC.txt
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DMA-attributes.txt
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HOWTO
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IPMI.txt
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IRQ-affinity.txt
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IRQ.txt
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Intel-IOMMU.txt
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Makefile
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ManagementStyle
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SAK.txt
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SELinux.txt
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SM501.txt
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SecurityBugs
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Smack.txt
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SubmitChecklist
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SubmittingDrivers
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SubmittingPatches
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VGA-softcursor.txt
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apparmor.txt
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applying-patches.txt
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atomic_ops.txt
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bad_memory.txt
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basic_profiling.txt
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binfmt_misc.txt
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braille-console.txt
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bt8xxgpio.txt
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btmrvl.txt
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bus-virt-phys-mapping.txt
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cachetlb.txt
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circular-buffers.txt
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coccinelle.txt Coccinelle: Fix documentation 2010-10-28 00:32:23 +02:00
cpu-hotplug.txt
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cpu-load.txt
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cputopology.txt
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credentials.txt
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dcdbas.txt
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debugging-modules.txt
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debugging-via-ohci1394.txt
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dell_rbu.txt
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devices.txt Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2010-10-28 09:35:11 -07:00
dmaengine.txt
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dontdiff
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dynamic-debug-howto.txt Dynamic Debug: Introduce ddebug_query= boot parameter 2010-10-22 10:16:42 -07:00
edac.txt
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eisa.txt
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email-clients.txt
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feature-removal-schedule.txt Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2010-10-28 09:35:11 -07:00
flexible-arrays.txt
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futex-requeue-pi.txt
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gcov.txt
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gpio.txt
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highuid.txt
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hw_random.txt
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init.txt
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initrd.txt
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intel_txt.txt
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io-mapping.txt
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io_ordering.txt
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iostats.txt
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irqflags-tracing.txt
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isapnp.txt
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java.txt
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kernel-doc-nano-HOWTO.txt
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kernel-docs.txt
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kernel-parameters.txt Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2010-10-28 11:59:52 -07:00
keys-request-key.txt
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keys.txt
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kmemcheck.txt
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kmemleak.txt
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kobject.txt
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kprobes.txt kprobes: Update document about irq disabled state in kprobe handler 2010-10-14 08:55:27 +02:00
kref.txt
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ldm.txt
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leds-class.txt
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leds-lp3944.txt
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local_ops.txt
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lockdep-design.txt
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lockstat.txt
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logo.gif
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logo.txt
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magic-number.txt
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mca.txt
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md.txt
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memory-barriers.txt
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memory-hotplug.txt
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memory.txt
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mono.txt
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mutex-design.txt
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nmi_watchdog.txt
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nommu-mmap.txt
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numastat.txt
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oops-tracing.txt
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padata.txt
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parport-lowlevel.txt
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parport.txt
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pi-futex.txt
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pnp.txt
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preempt-locking.txt
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printk-formats.txt
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prio_tree.txt
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rbtree.txt
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rfkill.txt
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robust-futex-ABI.txt
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robust-futexes.txt
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rt-mutex-design.txt
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rt-mutex.txt
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rtc.txt
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serial-console.txt
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sgi-ioc4.txt
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sgi-visws.txt
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sparse.txt
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spinlocks.txt
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stable_api_nonsense.txt
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stable_kernel_rules.txt
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svga.txt
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sysfs-rules.txt
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sysrq.txt documentation: update sysrq.txt magic sysrq keys 2010-10-26 17:32:41 -07:00
tomoyo.txt
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unaligned-memory-access.txt
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unicode.txt
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unshare.txt
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vgaarbiter.txt
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video-output.txt
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volatile-considered-harmful.txt
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workqueue.txt workqueue: add and use WQ_MEM_RECLAIM flag 2010-10-11 15:20:26 +02:00
zorro.txt
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