Robert Jennings 434f98c48f [POWERPC] atomic_dec_if_positive sign extension fix ... On 64-bit machines, if an atomic counter is explicitly set to a negative value, the atomic_dec_if_positive function will decrement and store the next smallest value in the atomic counter, contrary to its intended operation. The comparison to determine if the decrement will make the result negative was done by the "addic." instruction, which operates on a 64-bit value, namely the zero-extended word loaded from the atomic variable. This patch uses an explicit word compare (cmpwi) and changes the addic. to an addi (also changing "=&r" to "=&b" so that r0 isn't used, and addi doesn't become li). This also fixes a bug for both 32-bit and 64-bit in that previously 0x80000000 was considered positive, since the result after decrementing is positive. Now it is considered negative. Also, I clarify the return value in the comments just to make it clear that the value returned is always the decremented value, even if that value is not stored back to the atomic counter. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>		2007-01-22 21:27:36 +11:00
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iseries	…
8253pit.h	…
Kbuild	[POWERPC] cell: Fix spu_info.h header export	2006-12-08 15:55:55 +11:00
a.out.h	…
abs_addr.h	…
agp.h	…
asm-compat.h	…
atomic.h	[POWERPC] atomic_dec_if_positive sign extension fix	2007-01-22 21:27:36 +11:00
auxvec.h	…
backlight.h	…
bitops.h	[PATCH] LOG2: Make powerpc's __ilog2_u64() take a 64-bit argument	2006-12-11 12:29:27 -08:00
bootx.h	…
btext.h	…
bug.h	[POWERPC] Fix manual assembly WARN_ON() in enter_rtas().	2007-01-09 17:03:02 +11:00
bugs.h	…
byteorder.h	…
cache.h	…
cacheflush.h	[PATCH] Optimize D-cache alias handling on fork	2006-12-13 09:27:08 -08:00
cell-pmu.h	[POWERPC] cell: Add oprofile support	2006-12-04 20:40:14 +11:00
checksum.h	…
compat.h	…
cputable.h	Merge branch 'for_paulus' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc	2006-12-11 16:31:42 +11:00
cputime.h	…
current.h	…
dbdma.h	[POWERPC] Xserve cpu-meter driver	2006-12-04 20:39:30 +11:00
dcr-mmio.h	…
dcr-native.h	[POWERPC] Only export __mtdcr/__mfdcr if CONFIG_PPC_DCR is set	2006-12-10 23:15:47 -06:00
dcr.h	[POWERPC] Only export __mtdcr/__mfdcr if CONFIG_PPC_DCR is set	2006-12-10 23:15:47 -06:00
delay.h	…
device.h	…
div64.h	…
dma-mapping.h	[PATCH] Pass struct dev pointer to dma_cache_sync()	2006-12-07 08:39:41 -08:00
dma.h	…
eeh.h	[POWERPC] Merge 32 and 64 bits asm-powerpc/io.h	2006-12-04 20:39:05 +11:00
eeh_event.h	…
elf.h	[PATCH] elf: Always define elf_addr_t in linux/elf.h	2006-12-07 08:39:38 -08:00
emergency-restart.h	…
errno.h	…
fcntl.h	…
firmware.h	[POWERPC] ps3: multiplatform build fixes	2006-12-04 20:41:16 +11:00
floppy.h	…
fs_pd.h	…
futex.h	[PATCH] mm: pagefault_{disable,enable}()	2006-12-07 08:39:21 -08:00
grackle.h	…
hardirq.h	…
heathrow.h	…
hvcall.h	[POWERPC] Fix bugs in the hypervisor call stats code	2007-01-09 17:03:03 +11:00
hvconsole.h	…
hvcserver.h	…
hw_irq.h	[POWERPC] Delete unused irq functions on powerpc	2006-12-08 17:10:18 +11:00
i8259.h	…
ibmebus.h	…
ide.h	[POWERPC] Merge 32 and 64 bits asm-powerpc/io.h	2006-12-04 20:39:05 +11:00
immap_86xx.h	…
immap_qe.h	…
io-defs.h	[POWERPC] Merge 32 and 64 bits asm-powerpc/io.h	2006-12-04 20:39:05 +11:00
io.h	[POWERPC] include/asm-powerpc/: "extern inline" -> "static inline"	2006-12-04 20:41:26 +11:00
ioctl.h	…
ioctls.h	…
iommu.h	[POWERPC] Cell iommu support	2006-12-04 20:39:02 +11:00
ipc.h	…
ipcbuf.h	…
ipic.h	…
irq.h	[POWERPC] add virq_to_hw accessor routine	2006-12-04 20:40:37 +11:00
irq_regs.h	…
irqflags.h	…
kdebug.h	…
kdump.h	…
kexec.h	…
keylargo.h	…
kmap_types.h	…
kprobes.h	…
linkage.h	…
lmb.h	…
local.h	…
lppaca.h	…
lv1call.h	[POWERPC] ps3: add lv1 hvcalls	2006-12-04 20:40:44 +11:00
machdep.h	[POWERPC] Merge 32 and 64 bits asm-powerpc/io.h	2006-12-04 20:39:05 +11:00
macio.h	…
mc146818rtc.h	…
mediabay.h	…
mman.h	…
mmu.h	…
mmu_context.h	…
mmzone.h	…
module.h	[POWERPC] Generic BUG for powerpc	2006-12-11 16:35:07 +11:00
mpc52xx.h	[POWERPC] 52xx: Don't use device_initcall to probe of_platform_bus	2007-01-09 17:03:02 +11:00
mpc85xx.h	…
mpc86xx.h	…
mpic.h	…
msgbuf.h	…
mutex.h	…
namei.h	…
nvram.h	…
of_device.h	…
of_platform.h	…
ohare.h	…
oprofile_impl.h	[POWERPC] cell: Add oprofile support	2006-12-04 20:40:14 +11:00
pSeries_reconfig.h	…
paca.h	…
page.h	…
page_32.h	[PATCH] LOG2: Provide ilog2() fallbacks for powerpc	2006-12-08 08:28:51 -08:00
page_64.h	…
param.h	…
parport.h	…
pci-bridge.h	[POWERPC] Fix mmap of PCI resource with hack for X	2006-12-08 17:21:06 +11:00
pci.h	[POWERPC] Define pci_unmap_addr() et al. when CONFIG_NOT_COHERENT_CACHE=y	2006-12-08 17:10:18 +11:00
percpu.h	…
pgalloc.h	[PATCH] slab: remove kmem_cache_t	2006-12-07 08:39:25 -08:00
pgtable-4k.h	…
pgtable-64k.h	…
pgtable.h	…
pmac_feature.h	…
pmac_low_i2c.h	…
pmac_pfunc.h	…
pmc.h	…
poll.h	…
posix_types.h	[PATCH] FD_ZERO build fix	2007-01-11 18:18:22 -08:00
ppc-pci.h	…
ppc_asm.h	…
processor.h	…
prom.h	…
ps3.h	[POWERPC] ps3: add ps3 platform system bus support	2006-12-04 20:40:57 +11:00
ptrace.h	…
qe.h	…
qe_ic.h	…
reg.h	[POWERPC] Add SPURR SPR to sysfs	2006-12-09 11:39:06 +11:00
reg_8xx.h	…
resource.h	…
rtas.h	[POWERPC] Add rtas_service_present() helper	2006-12-08 17:10:22 +11:00
rtc.h	…
rwsem.h	…
scatterlist.h	…
seccomp.h	…
sections.h	…
semaphore.h	…
sembuf.h	…
serial.h	…
setup.h	[PATCH] cleanup asm/setup.h userspace visibility	2006-12-07 08:39:46 -08:00
shmbuf.h	…
shmparam.h	…
sigcontext.h	…
siginfo.h	…
signal.h	…
smp.h	…
smu.h	…
socket.h	…
sockios.h	…
sparsemem.h	[POWERPC] ps3: add lpar addressing	2006-12-04 20:40:52 +11:00
spinlock.h	…
spinlock_types.h	…
spu.h	[POWERPC] cell: add forward struct declarations to spu.h	2006-12-19 15:35:36 +01:00
spu_csa.h	…
spu_info.h	[POWERPC] spufs: Add /lslr, /dma_info and /proxydma files	2006-12-04 20:39:45 +11:00
spu_priv1.h	[POWERPC] cell: abstract spu management routines	2006-12-04 20:40:39 +11:00
sstep.h	…
stat.h	…
statfs.h	…
string.h	…
synch.h	…
syscalls.h	…
systbl.h	…
system.h	…
tce.h	…
termbits.h	[PATCH] tty: switch to ktermios	2006-12-08 08:28:57 -08:00
termios.h	…
thread_info.h	[PATCH] PM: Fix SMP races in the freezer	2006-12-13 09:05:49 -08:00
time.h	…
timex.h	…
tlb.h	…
tlbflush.h	…
topology.h	[PATCH] sched: add option to serialize load balancing	2006-12-10 09:55:43 -08:00
tsi108.h	[POWERPC] include/asm-powerpc/: "extern inline" -> "static inline"	2006-12-04 20:41:26 +11:00
tsi108_irq.h	…
types.h	[PATCH] Centralise definitions of sector_t and blkcnt_t	2006-12-04 19:41:15 -08:00
uaccess.h	[POWERPC] include/asm-powerpc/: "extern inline" -> "static inline"	2006-12-04 20:41:26 +11:00
ucc.h	…
ucc_fast.h	…
ucc_slow.h	…
ucontext.h	…
udbg.h	…
unaligned.h	…
uninorth.h	…
unistd.h	[PATCH] remove kernel syscalls	2006-12-07 08:39:37 -08:00
user.h	…
vdso.h	…
vdso_datapage.h	…
vga.h	…
vio.h	…
xmon.h	…
xor.h	…