kernel_optimize_test/arch/arm/kernel
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
..
.gitignore
armksyms.c
arthur.c
asm-offsets.c
atags.c
atags.h
bios32.c
calls.S [ARM] 5456/1: add sys_preadv and sys_pwritev 2009-04-20 14:01:39 +01:00
compat.c
compat.h
crunch-bits.S
crunch.c
debug.S [ARM] 5412/1: XSCALE: add ice dcc support 2009-02-27 20:57:46 +00:00
dma-isa.c
dma.c
ecard.c
ecard.h
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
fiq.c [ARM] 5421/1: ftrace: fix crash due to tracing of __naked functions 2009-03-12 21:33:03 +00:00
ftrace.c
head-common.S
head-nommu.S
head.S
init_task.c
io.c
irq.c Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2 2009-03-27 17:28:43 +01:00
isa.c
iwmmxt.S
kgdb.c
kprobes-decode.c
kprobes.c
machine_kexec.c
Makefile [ARM] pxa: add iWMMXt support for pxa168 2009-03-23 10:11:34 +08:00
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
ptrace.h
relocate_kernel.S
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
signal.h
smp.c [ARM] smp: fix cpumask usage in ARM SMP code 2009-05-17 16:22:46 +01:00
stacktrace.c
sys_arm.c
sys_oabi-compat.c Separate out common fstatat code into vfs_fstatat 2009-04-20 23:02:51 -04:00
thumbee.c
time.c
traps.c
unwind.c
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