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ecd322c9b3
tmp_suning_uos_patched/arch/arm
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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
..
boot arm: allow usage of string functions in linux/string.h 2009-03-31 13:05:36 +10:30
common [ARM] smp: fix cpumask usage in ARM SMP code 2009-05-17 16:22:46 +01:00
configs Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 2009-05-05 09:22:26 +01:00
include/asm [ARM] Add cmpxchg support for ARMv6+ systems (v5) 2009-05-28 21:10:31 +01:00
kernel [ARM] barriers: improve xchg, bitops and atomic SMP barriers 2009-05-28 19:39:27 +01:00
lib [ARM] barriers: improve xchg, bitops and atomic SMP barriers 2009-05-28 19:39:27 +01:00
mach-aaec2000
mach-at91 clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
mach-clps711x
mach-davinci Merge branch 'fix/asoc' into for-linus 2009-05-15 15:38:26 +02:00
mach-ebsa110
mach-ep93xx [ARM] 5509/1: ep93xx: clkdev enable UARTS 2009-05-16 19:55:56 +01:00
mach-footbridge
mach-gemini [ARM] arch_reset() now takes a second parameter 2009-03-30 10:40:12 +01:00
mach-h720x
mach-imx Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-04-24 08:36:41 -07:00
mach-integrator [ARM] 5517/1: integrator: don't put clock lookups in __initdata 2009-05-18 17:43:16 +01:00
mach-iop13xx dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) 2009-04-07 08:31:10 -07:00
mach-iop32x
mach-iop33x
mach-ixp4xx Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-05-10 10:46:45 -07:00
mach-ixp23xx
mach-ixp2000
mach-kirkwood [ARM] add coherent DMA mask for mv643xx_eth 2009-05-22 17:05:53 -04:00
mach-ks8695 Merge branch 'highmem' into devel 2009-03-24 22:47:45 +00:00
mach-l7200 [ARM] mach-l7200: fix spelling of SYS_CLOCK_OFF 2009-05-18 11:25:08 +01:00
mach-lh7a40x
mach-loki [ARM] add coherent DMA mask for mv643xx_eth 2009-05-22 17:05:53 -04:00
mach-mmp [ARM] pxa: add parameter to clksrc_read() for pxa168/910 2009-05-22 18:15:49 +08:00
mach-msm clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
mach-mv78xx0 [ARM] add coherent DMA mask for mv643xx_eth 2009-05-22 17:05:53 -04:00
mach-mx1 MX1ADS: remove I2C ifdefs 2009-04-16 12:57:15 +02:00
mach-mx2 imx21: activate i2c 2009-04-16 12:57:13 +02:00
mach-mx3 mx31ads: Mark as having full regulatoion constraints with 1133-EV1 board 2009-04-16 13:03:56 +02:00
mach-netx clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
mach-ns9xxx clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
mach-omap1 Merge branch 'omap-clock-fixes' into omap-fixes 2009-04-24 09:56:16 -07:00
mach-omap2 ARM: OMAP2/3: Change omapfb to use clkdev for dispc and rfbi, v2 2009-05-16 08:28:17 -07:00
mach-orion5x [ARM] add coherent DMA mask for mv643xx_eth 2009-05-22 17:05:53 -04:00
mach-pnx4008
mach-pxa Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 2009-05-23 11:16:05 +01:00
mach-realview [ARM] realview: fix broadcast tick support 2009-05-17 17:11:35 +01:00
mach-rpc
mach-s3c24a0/include/mach
mach-s3c2400
mach-s3c2410 [ARM] S3C2410: mach-bast.c registering i2c data too early 2009-05-15 15:13:25 +01:00
mach-s3c2412 [ARM] S3C2412: Add missing cache flush in suspend code 2009-05-01 12:28:16 +01:00
mach-s3c2440 [ARM] Osiris: Fix double initialisation in machine block 2009-04-17 12:42:24 +01:00
mach-s3c2442
mach-s3c2443
mach-s3c6400 [ARM] S3C64XX: Add S3C64XX_PA_IIS{0,1} to <mach/map.h> 2009-05-01 12:28:16 +01:00
mach-s3c6410 [ARM] SMDK6410: Request GPIOs for LCD power control 2009-04-15 14:46:03 +01:00
mach-sa1100 [ARM] lart: fix build error 2009-04-26 13:56:01 +01:00
mach-shark
mach-versatile [ARM] 5518/1: versatile: don't put clock lookups in __initdata 2009-05-18 17:43:06 +01:00
mach-w90x900
mm Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-05-02 16:40:20 -07:00
nwfpe [ARM] nwfpe: fix 'floatx80_is_nan' sparse warning 2009-05-15 12:49:14 +01:00
oprofile Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-03-28 14:03:14 -07:00
plat-iop dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
plat-mxc mx27ads: move PBC mapping out of vmalloc space 2009-05-05 09:37:08 +02:00
plat-omap ARM: OMAP3: Fix number of GPIO lines for 34xx 2009-05-16 08:28:16 -07:00
plat-orion Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-04-24 08:36:41 -07:00
plat-pxa [ARM] pxa: fix issue of muxed GPIO irq_chip functions touching non-muxed GPIOs 2009-04-27 11:45:16 +08:00
plat-s3c [ARM] S3C: Do not set clk->owner field if unset 2009-05-15 15:21:57 +01:00
plat-s3c24xx [ARM] S3C24XX: Fix unused code warning in arch/arm/plat-s3c24xx/dma.c 2009-05-15 15:13:24 +01:00
plat-s3c64xx [ARM] S3C64XX: fix GPIO debug 2009-05-15 15:13:18 +01:00
tools
vfp [ARM] 5440/1: Fix VFP state corruption due to preemption during VFP exceptions 2009-04-01 22:17:50 +01:00
Kconfig [ARM] Double check memmap is actually valid with a memmap has unexpected holes V2 2009-05-18 11:22:24 +01:00
Kconfig-nommu
Kconfig.debug
Makefile Merge branch 'for-rmk' of git://gitorious.org/linux-gemini/mainline into devel 2009-03-26 23:10:11 +00:00