Will Deacon 8c56cc8be5 ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions ...

This patch implements the word-at-a-time interface for ARM using the
same algorithm as x86. We use the fls macro from ARMv5 onwards, where
we have a clz instruction available which saves us a mov instruction
when targetting Thumb-2. For older CPUs, we use the magic 0x0ff0001
constant. Big-endian configurations make use of the implementation from
asm-generic.

With this implemented, we can replace our byte-at-a-time strnlen_user
and strncpy_from_user functions with the optimised generic versions.

Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2012-07-09 17:41:11 +01:00

..

.gitignore

[ARM] 5194/1: update .gitignore

2008-08-12 19:54:09 +01:00

arch_timer.c

ARM: 7444/1: kernel: add arch-timer C3STOP feature

2012-07-09 17:41:09 +01:00

armksyms.c

ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions

2012-07-09 17:41:11 +01:00

arthur.c

[ARM] arm/kernel/arthur.c: add MODULE_LICENSE

2008-05-17 22:55:16 +01:00

asm-offsets.c

ARM: 7114/1: cache-l2x0: add resume entry for l2 in secure mode

2011-10-17 09:11:51 +01:00

atags.c

clean up atags exporting code

2008-05-30 10:33:49 +02:00

atags.h

[ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags

2008-02-04 13:21:03 +00:00

bios32.c

ARM: PCI: remove per-pci_hw list of buses

2012-05-16 15:24:12 +01:00

calls.S

ARM: wire up process_vm_writev and process_vm_readv syscalls

2011-11-17 16:58:00 +00:00

compat.c

ARM: deprecate support for old way to pass kernel parameters

2010-07-07 16:38:36 +02:00

compat.h

ARM: deprecate support for old way to pass kernel parameters

2010-07-07 16:38:36 +02:00

cpuidle.c

cpuidle: Add common time keeping and irq enabling

2012-03-21 01:59:40 -04:00

crash_dump.c

crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn

2011-03-23 19:47:19 -07:00

debug.S

Merge tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2012-03-29 18:02:10 -07:00

devtree.c

arm: convert core files from module.h to export.h

2011-10-31 19:30:49 -04:00

dma-isa.c

ARM: dma-isa: request cascade channel after registering it

2009-12-24 18:34:08 +00:00

dma.c

locking, ARM: Annotate low level hw locks as raw

2011-09-13 11:12:14 +02:00

early_printk.c

ARM: Add an earlyprintk debug console

2009-12-09 10:02:18 +00:00

elf.c

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

entry-armv.S

ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs

2012-05-05 05:50:50 +01:00

entry-common.S

Merge branch 'for-arm' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal.git into for-linus

2012-05-29 22:13:55 +01:00

entry-header.S

Merge branch 'devel-stable' into for-next

2011-07-22 23:09:07 +01:00

etm.c

arm: fix implicit module.h users by adding it to arch/arm as required.

2011-10-31 19:30:50 -04:00

fiq.c

ARM: move CP15 definitions to separate header file

2012-03-28 18:30:01 +01:00

fiqasm.S

ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2

2011-05-26 10:31:06 +01:00

ftrace.c

ARM: 7331/1: extract out insn generation code from ftrace

2012-03-24 09:38:55 +00:00

head-common.S

arm/dt: Make __vet_atags also accept a dtb image

2011-05-11 15:12:32 +02:00

head-nommu.S

ARM: move CP15 definitions to separate header file

2012-03-28 18:30:01 +01:00

head.S

ARM: 7439/1: head.S: simplify initial page table mapping

2012-07-09 17:39:39 +01:00

hw_breakpoint.c

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

insn.c

ARM: fix missing bug.h include in arch/arm/kernel/insn.c

2012-03-30 11:51:46 +01:00

insn.h

ARM: 7334/1: add jump label support

2012-03-24 09:38:56 +00:00

io.c

arm: convert core files from module.h to export.h

2011-10-31 19:30:49 -04:00

irq.c

ARM: 7406/1: hotplug: copy the affinity mask when forcefully migrating IRQs

2012-04-28 11:01:31 +01:00

isa.c

sysctl: Drop & in front of every proc_handler.

2009-11-18 08:37:40 -08:00

iwmmxt.S

ARM: pxa: fix logic error in PJ4 iWMMXt handling

2011-08-11 10:10:26 +08:00

jump_label.c

ARM: 7334/1: add jump label support

2012-03-24 09:38:56 +00:00

kgdb.c

kgdb,arm: fix register dump

2010-10-29 13:14:40 -05:00

kprobes-arm.c

ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below

2011-11-30 23:54:54 +00:00

kprobes-common.c

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

kprobes-test-arm.c

ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below

2011-11-30 23:54:54 +00:00

kprobes-test-thumb.c

ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels

2011-11-26 21:58:53 +00:00

kprobes-test.c

ARM: 7209/1: Use generic ARM instruction set condition code checks for kprobes.

2011-12-13 08:52:03 +00:00

kprobes-test.h

ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels

2011-11-26 21:58:53 +00:00

kprobes-thumb.c

ARM: kprobes: Add exports for test code

2011-09-20 18:17:43 +00:00

kprobes.c

Merge tag 'for-linus' of git://github.com/rustyrussell/linux

2012-04-02 08:53:24 -07:00

kprobes.h

ARM: kprobes: Add exports for test code

2011-09-20 18:17:43 +00:00

leds.c

arm: leds: convert sysdev_class to a regular subsystem

2011-12-21 15:52:57 -08:00

machine_kexec.c

Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm

2012-03-29 16:53:48 -07:00

Makefile

Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-05-21 19:43:57 -07:00

module.c

ARM: 7059/1: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_*

2011-08-23 15:30:33 +01:00

opcodes.c

ARM: 7206/1: Add generic ARM instruction set condition code checks.

2011-12-13 08:52:02 +00:00

patch.c

ARM: 7332/1: extract out code patch function from kprobes

2012-03-24 09:38:55 +00:00

patch.h

ARM: 7332/1: extract out code patch function from kprobes

2012-03-24 09:38:55 +00:00

perf_event_v6.c

ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration

2012-07-09 17:41:10 +01:00

perf_event_v7.c

ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration

2012-07-09 17:41:10 +01:00

perf_event_xscale.c

ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration

2012-07-09 17:41:10 +01:00

perf_event.c

ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration

2012-07-09 17:41:10 +01:00

pj4-cp0.c

arm: remove several unnecessary module.h include instances

2011-10-31 19:30:48 -04:00

pmu.c

ARM: PMU: re-export release_pmu symbol to modules

2011-11-16 10:06:42 +00:00

process.c

arm: Remove unused cpu_idle_wait()

2012-05-08 12:35:06 +02:00

ptrace.c

Merge branch 'for-arm' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal.git into for-linus

2012-05-29 22:13:55 +01:00

relocate_kernel.S

ARM: 7065/1: kexec: ensure new kernel is entered in ARM state

2011-08-28 10:39:41 +01:00

return_address.c

arm: convert core files from module.h to export.h

2011-10-31 19:30:49 -04:00

sched_clock.c

ARM: sync sched_clock() state on suspend

2012-03-24 09:38:53 +00:00

setup.c

Merge tag 'cleanup-initcall' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2012-05-26 13:14:01 -07:00

signal.c

new helper: signal_delivered()

2012-06-01 12:58:52 -04:00

signal.h

arm: remove unused restart trampoline

2012-05-21 14:39:44 -04:00

sleep.S

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

smp_scu.c

ARM: 7347/1: SCU: use cpu_logical_map for per-CPU low power mode

2012-04-28 17:31:37 +01:00

smp_tlb.c

smp: introduce a generic on_each_cpu_mask() function

2012-03-28 17:14:35 -07:00

smp_twd.c

Revert "ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus"

2012-04-19 19:35:10 +01:00

smp.c

arm: use clear_tasks_mm_cpumask()

2012-05-31 17:49:29 -07:00

stacktrace.c

arm: convert core files from module.h to export.h

2011-10-31 19:30:49 -04:00

suspend.c

ARM: suspend: use idmap_pgd instead of suspend_pgd

2011-12-06 14:04:14 +00:00

swp_emulate.c

ARM: 7208/1: Add condition code checking to SWP emulation handler.

2011-12-13 08:52:03 +00:00

sys_arm.c

ARM: 7410/1: Add extra clobber registers for assembly in kernel_execve

2012-05-05 13:54:01 +01:00

sys_oabi-compat.c

userns: Convert stat to return values mapped from kuids and kgids

2012-05-15 14:08:35 -07:00

tcm.c

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

tcm.h

ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3

2009-09-15 22:11:05 +01:00

thumbee.c

ARM: 7385/1: ThumbEE: Use cpuid macros to read ID_PFR0 for ThumbEE

2012-04-25 19:49:26 +01:00

time.c

ARM: 7413/1: move read_{boot,persistent}_clock to the architecture level

2012-05-06 11:09:21 +01:00

topology.c

ARM: 7182/1: ARM cpu topology: fix warning

2011-11-30 23:55:21 +00:00

traps.c

ARM: 7424/1: update die handler from x86

2012-07-09 17:39:37 +01:00

unwind.c

ARM: unwinder: fix bisection to find origin in .idx section

2011-12-15 14:02:19 -08:00

vmlinux.lds.S

ARM: 7320/1: Fix proc_info table alignment

2012-02-09 16:25:37 +00:00

xscale-cp0.c

arm: remove several unnecessary module.h include instances

2011-10-31 19:30:48 -04:00