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Nick Piggin 0b2fcfdb8b [PATCH] atomic: add_unless cmpxchg optimise 
Without branch hints, the very unlikely chance of the loop repeating due to
cmpxchg failure is unrolled with gcc-4 that I have tested.

Improve this for architectures with a native cas/cmpxchg.  llsc archs
should try to implement this natively.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:17 -08:00
..
a.out.h
[SPARC64]: Increase top of 32-bit process stack.
2006-03-20 01:16:36 -08:00
agp.h
[PATCH] AGP fix for Xen VMM
2005-06-07 12:35:43 -07:00
apb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asi.h
[SPARC64]: Sun4v specific ASI defines.
2006-03-20 01:11:43 -08:00
atomic.h
[PATCH] atomic: add_unless cmpxchg optimise
2006-03-23 07:38:17 -08:00
auxio.h
[SPARC64]: Get rid of fast IRQ feature.
2005-06-27 17:04:45 -07:00
auxvec.h
[PATCH] auxiliary vector cleanups
2005-09-07 16:57:21 -07:00
bbc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bitops.h
[FLS64]: generic version
2006-01-03 13:11:06 -08:00
bpp.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bsderrno.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bug.h
[PATCH] remove all kernel BUGs
2005-05-01 08:59:01 -07:00
bugs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
byteorder.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cache.h
[PATCH] Move read_mostly definition to asm/cache.h
2006-03-23 07:38:10 -08:00
cacheflush.h
[SPARC64]: Add CONFIG_DEBUG_PAGEALLOC support.
2005-09-25 16:46:57 -07:00
chafsr.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
checksum.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
chmctrl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cmt.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
compat.h
[PATCH] compat: be more consistent about [ug]id_t
2005-09-07 16:57:19 -07:00
const.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cpudata.h
[SPARC64]: Add a secondary TSB for hugepage mappings.
2006-03-22 01:15:14 -08:00
cputime.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
current.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dcr.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dcu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
delay.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
display7seg.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
div64.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dma-mapping.h
[PATCH] gfp_t: dma-mapping (simple cases)
2005-10-28 08:16:49 -07:00
dma.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ebus.h
[SPARC]: More abstractions and cleanups of dma handling in cs4231.
2005-11-07 14:09:19 -08:00
elf.h
[SPARC64]: Add HWCAP_SPARC_BLKINIT elf capability flag for Niagara.
2006-03-20 01:13:26 -08:00
emergency-restart.h
[PATCH] Add emergency_restart()
2005-07-26 14:35:41 -07:00
envctrl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
errno.h
[PATCH] add EOWNERDEAD and ENOTRECOVERABLE version 2
2005-05-01 08:59:06 -07:00
estate.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fbio.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fcntl.h
[PATCH] Clean up struct flock definitions
2005-09-07 16:57:38 -07:00
fhc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
floppy.h
[SPARC64]: Get rid of fast IRQ feature.
2005-06-27 17:04:45 -07:00
fpumacro.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
futex.h
[SPARC64]: Mark __ex_table section correctly.
2006-03-04 23:23:56 -08:00
hardirq.h
[SPARC64]: Eliminate irq_cpustat_t.
2005-08-29 22:46:43 -07:00
head.h
[SPARC64]: Add GET_GL_GLOBAL() macro for SUN4V.
2006-03-20 01:13:18 -08:00
hw_irq.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
hypervisor.h
[SPARC64]: Fix bugs in SUN4V cpu mondo dispatch.
2006-03-20 01:14:09 -08:00
ide.h
[SPARC64]: Move DCACHE_ALIASING_POSSIBLE define to asm/page.h
2005-09-19 20:11:57 -07:00
idprom.h
[SPARC]: Clean up idprom header files.
2006-03-20 01:12:08 -08:00
intr_queue.h
[SPARC64]: Sun4v interrupt queue register definitions.
2006-03-20 01:11:44 -08:00
io.h
[SPARC64]: Use 'unsigned long' for port argument to I/O string ops.
2005-08-31 15:01:33 -07:00
ioctl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ioctls.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
iommu.h
[SPARC64]: Fix streaming buffer flushing on PCI and SBUS.
2005-05-31 16:57:59 -07:00
ipc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ipcbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
irq.h
[SPARC64]: Fix uniprocessor IRQ targetting on SUN4V.
2006-03-20 01:13:24 -08:00
isa.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
kdebug.h
[PATCH] RCU: clean up a few remaining synchronize_kernel() calls
2005-06-25 16:24:38 -07:00
kmap_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
kprobes.h
[PATCH] kprobes: fix build breakage
2006-01-10 08:01:40 -08:00
linkage.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
local.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
lsu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mc146818rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mman.h
[PATCH] add asm-generic/mman.h
2006-02-15 15:32:22 -08:00
mmu_context.h
[SPARC64]: Add a secondary TSB for hugepage mappings.
2006-03-22 01:15:14 -08:00
mmu.h
[SPARC64]: Add a secondary TSB for hugepage mappings.
2006-03-22 01:15:14 -08:00
module.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mostek.h
[PATCH] mostek bogus sparse annotations fixed
2005-04-24 12:28:36 -07:00
msgbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mutex.h
[PATCH] mutex subsystem, add default include/asm-*/mutex.h files
2006-01-09 15:59:19 -08:00
namei.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ns87303.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
numnodes.h
[SPARC64]: Move over to sparsemem.
2006-03-20 01:14:22 -08:00
openprom.h
[SPARC64]: Rewrite convoluted physical memory probing.
2005-09-29 17:58:26 -07:00
openpromio.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
oplib.h
[SPARC64]: Fix system type in /proc/cpuinfo and remove bogus OBP check.
2006-03-20 01:14:25 -08:00
page.h
[SPARC64]: Add a secondary TSB for hugepage mappings.
2006-03-22 01:15:14 -08:00
param.h
[SPARC64]: Support CONFIG_HZ
2005-07-08 15:21:51 -07:00
parport.h
[SPARC64]: Fix enable_dma() in asm-sparc64/parport.h
2005-07-06 15:41:54 -07:00
pbm.h
[SPARC64]: More SUN4V PCI controller work.
2006-03-20 01:12:11 -08:00
pci.h
[SPARC64]: Beginnings of SUN4V PCI controller support.
2006-03-20 01:12:10 -08:00
pconf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
percpu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
perfctr.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pgalloc.h
[SPARC64]: Kill pgtable quicklists and use SLAB.
2006-03-20 01:11:14 -08:00
pgtable.h
[SPARC64]: Add a secondary TSB for hugepage mappings.
2006-03-22 01:15:14 -08:00
pil.h
[SPARC64]: Fix new context version SMP handling.
2006-03-20 01:14:21 -08:00
poll.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
posix_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
processor.h
[SPARC64]: Top-down address space allocation for 32-bit tasks.
2006-03-20 01:16:35 -08:00
psrcompat.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pstate.h
[SPARC64]: Fixup TSTATE layout diagram in asm/pstate.h
2006-03-20 01:13:02 -08:00
ptrace.h
[PATCH] consolidate sys_ptrace()
2005-11-07 07:53:42 -08:00
reg.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
resource.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rwsem-const.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rwsem.h
[PATCH] add sem_is_read/write_locked()
2005-10-29 21:40:35 -07:00
sbus.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
scatterlist.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
scratchpad.h
[SPARC64]: Sun4v scratchpad register layout.
2006-03-20 01:11:44 -08:00
seccomp.h
[SPARC64]: Add missing asm-sparc64/seccomp.h file.
2005-07-11 13:44:56 -07:00
sections.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
semaphore.h
[PATCH] semaphore: Remove __MUTEX_INITIALIZER()
2005-10-30 17:37:27 -08:00
sembuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
setup.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sfafsr.h
[SPARC64]: Revamp Spitfire error trap handling.
2005-08-29 12:45:11 -07:00
sfp-machine.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
shmbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
shmparam.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sigcontext.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
siginfo.h
[PATCH] consolidate SIGEV_PAD_SIZE
2005-05-01 08:59:08 -07:00
signal.h
[SPARC64]: Add support for IRQ pre-handlers.
2005-07-04 13:24:38 -07:00
smp.h
[SPARC64]: Add SMT scheduling support for Niagara.
2006-03-20 01:14:24 -08:00
socket.h
[NET]: Introduce SO_{SND,RCV}BUFFORCE socket options
2005-08-29 15:31:35 -07:00
sockios.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
solerrno.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sparsemem.h
[SPARC64]: Move over to sparsemem.
2006-03-20 01:14:22 -08:00
spinlock_types.h
[PATCH] spinlock consolidation
2005-09-10 10:06:21 -07:00
spinlock.h
[SPARC64]: Implement __raw_read_trylock()
2006-01-23 21:03:56 -08:00
spitfire.h
[SPARC64]: Add 'hypervisor' to ultra_tlb_type enumeration.
2006-03-20 01:11:39 -08:00
starfire.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
stat.h
[PATCH] sparc64: Fix stat
2005-04-18 15:13:15 -07:00
statfs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
string.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sunbpp.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
svr4.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
system.h
[SPARC64]: Kill all %pstate changes in context switch code.
2006-03-20 01:11:49 -08:00
termbits.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
termios.h
[SPARC]: remove duplicate TIOCPKT_ definitions
2005-11-07 14:10:42 -08:00
thread_info.h
[SPARC64]: Correctable ECC errors cannot occur at trap level > 0.
2006-03-20 01:11:33 -08:00
timer.h
[SPARC64]: Privatize sun5_timer.
2005-07-24 19:36:13 -07:00
timex.h
[SPARC64]: Define ARCH_HAS_READ_CURRENT_TIMER.
2006-03-20 01:13:29 -08:00
tlb.h
[SPARC64] mm: simpler tlb_flush_mmu
2005-11-07 14:12:08 -08:00
tlbflush.h
[SPARC64]: Move away from virtual page tables, part 1.
2006-03-20 01:11:13 -08:00
topology.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
tsb.h
[SPARC64]: Create a seperate kernel TSB for 4MB/256MB mappings.
2006-03-20 01:13:56 -08:00
ttable.h
[SPARC64]: More TLB/TSB handling fixes.
2006-03-20 01:13:34 -08:00
types.h
[PATCH] sab: consolidate kmem_bufctl_t
2005-09-05 00:05:48 -07:00
uaccess.h
[SPARC64]: __bzero_noasi --> __clear_user
2006-03-20 01:13:28 -08:00
uctx.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unaligned.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unistd.h
[SPARC]: sys_newfstatat --> sys_fstatat64
2006-02-12 23:30:11 -08:00
upa.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
user.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
utrap.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
vdev.h
[SPARC64]: Decode virtual-devices interrupts correctly.
2006-03-20 01:13:05 -08:00
vga.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
visasm.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
watchdog.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
xor.h
[SPARC64]: Niagara optimized XOR functions for RAID.
2006-03-20 01:14:03 -08:00