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Russell King bac4e960b5 [ARM] barriers: improve xchg, bitops and atomic SMP barriers 
Mathieu Desnoyers pointed out that the ARM barriers were lacking:

- cmpxchg, xchg and atomic add return need memory barriers on
  architectures which can reorder the relative order in which memory
  read/writes can be seen between CPUs, which seems to include recent
  ARM architectures. Those barriers are currently missing on ARM.

- test_and_xxx_bit were missing SMP barriers.

So put these barriers in.  Provide separate atomic_add/atomic_sub
operations which do not require barriers.

Reported-Reviewed-and-Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 		2009-05-28 19:39:27 +01:00
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.gitignore
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Makefile [ARM] pxa: add iWMMXt support for pxa168 2009-03-23 10:11:34 +08:00
armksyms.c Merge branch 'mxc-pu-imxfb' of git://pasiphae.extern.pengutronix.de/git/imx/linux-2.6 into devel 2008-12-17 20:04:45 +00:00
arthur.c
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asm-offsets.c
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atags.c
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atags.h
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bios32.c PCI: arm: use generic INTx swizzle from PCI core 2009-01-07 11:13:13 -08:00
calls.S [ARM] 5456/1: add sys_preadv and sys_pwritev 2009-04-20 14:01:39 +01:00
compat.c
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compat.h
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crunch-bits.S
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crunch.c
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debug.S [ARM] 5412/1: XSCALE: add ice dcc support 2009-02-27 20:57:46 +00:00
dma-isa.c [ARM] dma: make DMA_MODE_xxx reflect ISA DMA settings 2009-01-02 12:18:53 +00:00
dma.c [ARM] dma: remove dmamode_t typedef 2009-01-02 12:34:55 +00:00
ecard.c arm: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:43 -08:00
ecard.h
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elf.c [ARM] disable NX support for OABI-supporting kernels 2009-05-23 11:36:20 +01:00
entry-armv.S [ARM] barriers: improve xchg, bitops and atomic SMP barriers 2009-05-28 19:39:27 +01:00
entry-common.S Merge branch 'master' of git://git.marvell.com/orion into devel 2009-03-19 23:10:40 +00:00
entry-header.S
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fiq.c [ARM] 5421/1: ftrace: fix crash due to tracing of __naked functions 2009-03-12 21:33:03 +00:00
ftrace.c small doc fix: ftrace_dyn_arch_init is called by ftrace_init 2008-12-12 11:15:45 +01:00
head-common.S [ARM] use asm/sections.h 2008-12-01 11:53:07 +00:00
head-nommu.S
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head.S
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init_task.c take init_fs to saner place 2008-12-31 18:07:42 -05:00
io.c
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irq.c Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2 2009-03-27 17:28:43 +01:00
isa.c [ARM] arch/arm/kernel/isa.c: missing definition of register_isa_ports 2009-01-08 15:53:08 +00:00
iwmmxt.S
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kgdb.c
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kprobes-decode.c
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kprobes.c kprobes: add kprobe_insn_mutex and cleanup arch_remove_kprobe() 2009-01-06 15:59:20 -08:00
machine_kexec.c [ARM] Storage class should be before const qualifier 2009-02-10 09:59:19 +00:00
module.c [ARM] 5507/1: support R_ARM_MOVW_ABS_NC and MOVT_ABS relocation types 2009-05-07 17:21:01 +01:00
process.c Simplify copy_thread() 2009-04-02 19:04:51 -07:00
ptrace.c [ARM] 5387/1: Add ptrace VFP support on ARM 2009-02-12 10:59:43 +00:00
ptrace.h
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relocate_kernel.S
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setup.c Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel 2009-03-13 21:44:51 +00:00
signal.c
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signal.h
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smp.c [ARM] smp: fix cpumask usage in ARM SMP code 2009-05-17 16:22:46 +01:00
stacktrace.c [ARM] 5382/1: unwind: Reorganise the stacktrace support 2009-02-12 13:21:17 +00:00
sys_arm.c
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sys_oabi-compat.c Separate out common fstatat code into vfs_fstatat 2009-04-20 23:02:51 -04:00
thumbee.c Fix the teehbr_read function prototype 2008-11-10 14:14:11 +00:00
time.c [ARM] 5382/1: unwind: Reorganise the stacktrace support 2009-02-12 13:21:17 +00:00
traps.c [ARM] 5383/2: unwind: Add core support for ARM stack unwinding 2009-02-19 11:26:24 +00:00
unwind.c [ARM] 5383/2: unwind: Add core support for ARM stack unwinding 2009-02-19 11:26:24 +00:00
vmlinux.lds.S Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-03-28 14:03:14 -07:00
xscale-cp0.c
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