Mathieu Desnoyers ecd322c9b3 [ARM] Add cmpxchg support for ARMv6+ systems (v5) ... Add cmpxchg/cmpxchg64 support for ARMv6K and ARMv7 systems (original patch from Catalin Marinas <catalin.marinas@arm.com>) The cmpxchg and cmpxchg64 functions can be implemented using the LDREX*/STREX* instructions. Since operand lengths other than 32bit are required, the full implementations are only available if the ARMv6K extensions are present (for the LDREXB, LDREXH and LDREXD instructions). For ARMv6, only 32-bits cmpxchg is available. Mathieu : Make cmpxchg_local always available with best implementation for all type sizes (1, 2, 4 bytes). Make cmpxchg64_local always available. Use "Ir" constraint for "old" operand, like atomic.h atomic_cmpxchg does. Change since v3 : - Add "memory" clobbers (thanks to Nicolas Pitre) - removed __asmeq(), only needed for old compilers, very unlikely on ARMv6+. Note : ARMv7-M should eventually be ifdefed-out of cmpxchg64. But it's not supported by the Linux kernel currently. Put back arm < v6 cmpxchg support. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: Catalin Marinas <catalin.marinas@arm.com> CC: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2009-05-28 21:10:31 +01:00
..
hardware	[ARM] smp: fix cpumask usage in ARM SMP code	2009-05-17 16:22:46 +01:00
mach	[ARM] 5422/1: ARM: MMU: add a Non-cacheable Normal executable memory type	2009-03-12 19:25:02 +00:00
a.out-core.h
a.out.h	headers_check fix: arm, a.out.h	2009-02-01 11:01:22 +05:30
assembler.h	[ARM] barriers: improve xchg, bitops and atomic SMP barriers	2009-05-28 19:39:27 +01:00
atomic.h	[ARM] barriers: improve xchg, bitops and atomic SMP barriers	2009-05-28 19:39:27 +01:00
auxvec.h
bitops.h	[ARM] 5339/1: fix __fls() on ARM	2008-12-04 09:21:55 +00:00
bug.h	[ARM] 5211/2: fix a couple warnings from BUG() usage	2008-09-01 12:06:27 +01:00
bugs.h
byteorder.h	byteorder: make swab.h include asm/swab.h like a regular header	2009-01-14 19:56:50 -08:00
cache.h
cacheflush.h	Merge branch 'for-rmk' of git://gitorious.org/linux-gemini/mainline into devel	2009-03-26 23:10:11 +00:00
cachetype.h	[ARM] Introduce new bitmask based cache type macros	2008-09-25 15:35:28 +01:00
checksum.h
clkdev.h	[ARM] clkdev: add generic clkdev infrastructure	2008-11-27 12:38:21 +00:00
cpu-multi32.h
cpu-single.h
cpu.h
cputime.h
cputype.h	[ARM] cputype: separate definitions, use them	2008-09-01 12:06:23 +01:00
current.h
delay.h
device.h
div64.h	[ARM] 5320/1: fix assembly constraints in implementation of do_div()	2008-10-23 12:53:32 +01:00
dma-mapping.h	[ARM] make page_to_dma() highmem aware	2009-03-15 21:01:21 -04:00
dma.h	[ARM] dma: remove dmamode_t typedef	2009-01-02 12:34:55 +00:00
domain.h
ecard.h
elf.h	[ARM] 5507/1: support R_ARM_MOVW_ABS_NC and MOVT_ABS relocation types	2009-05-07 17:21:01 +01:00
emergency-restart.h
errno.h
fb.h
fcntl.h
fiq.h
fixmap.h	[ARM] fixmap support	2009-03-15 21:01:20 -04:00
flat.h
floppy.h	[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach	2008-08-07 09:55:48 +01:00
fpstate.h
ftrace.h	ftrace: rename FTRACE to FUNCTION_TRACER	2008-10-20 18:27:03 +02:00
futex.h	[ARM] 5218/1: arm: improved futex support	2008-09-01 12:06:26 +01:00
glue.h
gpio.h	[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach	2008-08-07 09:55:48 +01:00
hardirq.h
highmem.h	[ARM] introduce dma_cache_maint_page()	2009-03-15 21:01:21 -04:00
hw_irq.h	[ARM] Fix circular include dependency with IRQ headers	2008-08-07 09:39:37 +01:00
hwcap.h	[ARM] 5388/1: Add hwcap bits for VFPv3 and VFPv3D16	2009-02-12 10:59:44 +00:00
ide.h
io.h	[ARM] Add a common typesafe __io implementation	2008-11-30 11:45:54 +00:00
ioctl.h
ioctls.h
ipcbuf.h
irq.h	[ARM] give RiscPC a NR_IRQS definition and remove default	2008-11-29 19:14:31 +00:00
irq_regs.h
irqflags.h
Kbuild	byteorder: make swab.h include asm/swab.h like a regular header	2009-01-14 19:56:50 -08:00
kdebug.h
kexec.h	kexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE	2008-08-15 08:35:42 -07:00
kgdb.h
kmap_types.h	[ARM] Feroceon: add highmem support to L2 cache handling code	2009-03-15 21:01:21 -04:00
kprobes.h	[ARM] 5206/1: remove kprobe_trap_handler() hack	2008-09-01 12:06:26 +01:00
leds.h
limits.h
linkage.h
local.h
locks.h
mc146818rtc.h	[ARM] Convert asm/io.h to linux/io.h	2008-09-06 12:10:45 +01:00
memory.h	[ARM] make page_to_dma() highmem aware	2009-03-15 21:01:21 -04:00
mman.h
mmu.h	NOMMU: Make VMAs per MM as for MMU-mode linux	2009-01-08 12:04:47 +00:00
mmu_context.h	[ARM] Remove linux/sched.h from asm/cacheflush.h and asm/uaccess.h	2008-11-29 18:49:55 +00:00
mmzone.h	[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach	2008-08-07 09:55:48 +01:00
module.h	[ARM] 5384/1: unwind: Add stack unwinding support for loadable modules	2009-02-19 11:27:19 +00:00
msgbuf.h
mtd-xip.h	[ARM] move asm/xip.h's mach/hardware.h include to mach/xip.h	2008-12-14 13:22:51 +00:00
mutex.h
nwflash.h
page-nommu.h
page.h	ARM: Add support for FA526 v2	2009-03-25 13:10:01 +02:00
param.h
parport.h
pci.h	[ARM] Fix PCI_DMA_BUS_IS_PHYS for ARM	2008-09-13 21:35:55 +01:00
percpu.h
pgalloc.h
pgtable-hwdef.h
pgtable-nommu.h
pgtable.h	Merge branch 'ptebits' into devel	2008-10-09 21:31:56 +01:00
poll.h
posix_types.h
proc-fns.h	Merge branch 'for-rmk' of git://gitorious.org/linux-gemini/mainline into devel	2009-03-26 23:10:11 +00:00
processor.h	Merge branch 'omap3-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 into devel	2008-12-15 22:13:26 +00:00
procinfo.h
ptrace.h	[ARM] 5387/1: Add ptrace VFP support on ARM	2009-02-12 10:59:43 +00:00
resource.h
scatterlist.h
sections.h
segment.h
sembuf.h
serial.h
setup.h	headers_check fix: arm, setup.h	2009-02-01 11:01:22 +05:30
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
sizes.h	[ARM] 5447/1: Add SZ_32K	2009-04-08 20:35:57 +01:00
smp.h	[ARM] smp: fix cpumask usage in ARM SMP code	2009-05-17 16:22:46 +01:00
socket.h	net: new user space API for time stamping of incoming and outgoing packets	2009-02-15 22:43:33 -08:00
sockios.h
sparsemem.h	[ARM] mm: enable sparsemem on clps7500 and RiscPC	2008-10-01 17:24:04 +01:00
spinlock.h	Allow rwlocks to re-enable interrupts	2009-04-02 19:05:11 -07:00
spinlock_types.h
stacktrace.h	[ARM] 5382/1: unwind: Reorganise the stacktrace support	2009-02-12 13:21:17 +00:00
stat.h
statfs.h	ARM: Use <asm-generic/statfs.h>	2008-09-04 09:46:11 +01:00
string.h	[ARM] remove memzero()	2008-11-27 12:37:59 +00:00
suspend.h
swab.h	headers_check fix: arm, swab.h	2009-02-01 11:01:23 +05:30
system.h	[ARM] Add cmpxchg support for ARMv6+ systems (v5)	2009-05-28 21:10:31 +01:00
termbits.h
termios.h
therm.h
thread_info.h	[ARM] 5382/1: unwind: Reorganise the stacktrace support	2009-02-12 13:21:17 +00:00
thread_notify.h
timex.h	[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach	2008-08-07 09:55:48 +01:00
tlb.h	[ARM] 5450/1: Flush only the needed range when unmapping a VMA	2009-04-15 10:01:02 +01:00
tlbflush.h	ARM: Add support for FA526 v2	2009-03-25 13:10:01 +02:00
topology.h
traps.h	[ARM] 5381/1: unwind: Reorganise the traps.c code	2009-02-12 13:21:15 +00:00
types.h
uaccess.h	[ARM] Remove linux/sched.h from asm/cacheflush.h and asm/uaccess.h	2008-11-29 18:49:55 +00:00
ucontext.h
unaligned.h
unistd.h	[ARM] 5456/1: add sys_preadv and sys_pwritev	2009-04-20 14:01:39 +01:00
unwind.h	[ARM] 5383/2: unwind: Add core support for ARM stack unwinding	2009-02-19 11:26:24 +00:00
user.h	[ARM] 5387/1: Add ptrace VFP support on ARM	2009-02-12 10:59:43 +00:00
vfp.h
vfpmacros.h
vga.h	[ARM] Convert asm/io.h to linux/io.h	2008-09-06 12:10:45 +01:00
xor.h