Arjan van de Ven 79e1dd05d1 x86: Provide an alternative() based cmpxchg64() ... cmpxchg64() today generates, to quote Linus, "barf bag" code. cmpxchg64() is about to get used in the scheduler to fix a bug there, but it's a prerequisite that cmpxchg64() first be made non-sucking. This patch turns cmpxchg64() into an efficient implementation that uses the alternative() mechanism to just use the raw instruction on all modern systems. Note: the fallback is NOT smp safe, just like the current fallback is not SMP safe. (Interested parties with i486 based SMP systems are welcome to submit fix patches for that.) Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> [ fixed asm constraint bug ] Fixed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090930170754.0886ff2e@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-09-30 22:55:59 +02:00
..
uv	x86: SGI UV: Add volatile semantics to macros that access chipset registers	2009-09-18 14:05:32 +02:00
visws	…
xen	…
Kbuild	…
a.out-core.h	…
a.out.h	…
acpi.h	ACPI: Handle CONFIG_ACPI=n better from linux/acpi.h	2009-08-28 19:57:29 -04:00
aes.h	…
agp.h	…
alternative-asm.h	…
alternative.h	…
amd_iommu.h	x86/amd-iommu: Add passthrough mode initialization functions	2009-09-03 16:15:42 +02:00
amd_iommu_types.h	Merge branch 'amd-iommu/pagetable' into amd-iommu/2.6.32	2009-09-03 17:14:57 +02:00
apic.h	Merge branch 'linus' into x86/urgent	2009-09-20 20:25:03 +02:00
apicdef.h	Merge branch 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2009-09-14 17:43:43 -07:00
apicnum.h	…
apm.h	…
asm.h	x86, asm: Make _ASM_EXTABLE() usable from assembly code	2009-08-31 15:14:30 -07:00
atomic.h	…
atomic_32.h	…
atomic_64.h	…
auxvec.h	…
bios_ebda.h	…
bitops.h	…
bitsperlong.h	…
boot.h	…
bootparam.h	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-18 14:05:47 -07:00
bug.h	…
bugs.h	…
byteorder.h	…
cache.h	Use macros for .data.page_aligned section.	2009-09-21 06:27:08 +02:00
cacheflush.h	x86, pat: Use page flags to track memtypes of RAM pages	2009-08-26 15:41:24 -07:00
calgary.h	…
calling.h	…
checksum.h	…
checksum_32.h	…
checksum_64.h	…
cmpxchg.h	…
cmpxchg_32.h	x86: Provide an alternative() based cmpxchg64()	2009-09-30 22:55:59 +02:00
cmpxchg_64.h	…
compat.h	…
cpu.h	…
cpu_debug.h	…
cpufeature.h	x86: Move APERF/MPERF into a X86_FEATURE	2009-09-15 16:51:25 +02:00
cpumask.h	…
cputime.h	…
current.h	…
debugreg.h	…
delay.h	…
desc.h	…
desc_defs.h	…
device.h	…
div64.h	…
dma-mapping.h	…
dma.h	…
dmi.h	…
ds.h	…
dwarf2.h	x86, asm: Add 32-bit versions of the combined CFI macros	2009-08-31 15:14:29 -07:00
e820.h	x86: Move memory_setup to x86_init_ops	2009-08-27 17:12:52 +02:00
edac.h	…
efi.h	…
elf.h	x86: Increase MIN_GAP to include randomized stack	2009-09-10 17:00:12 -07:00
emergency-restart.h	…
entry_arch.h	perf: Do the big rename: Performance Counters -> Performance Events	2009-09-21 14:28:04 +02:00
errno.h	…
fb.h	…
fcntl.h	…
fixmap.h	…
floppy.h	…
frame.h	…
ftrace.h	tracing: Remove FTRACE_SYSCALL_MAX definitions	2009-08-26 21:30:39 +02:00
futex.h	…
gart.h	…
genapic.h	…
geode.h	…
gpio.h	…
hardirq.h	…
highmem.h	…
hpet.h	…
hugetlb.h	…
hw_irq.h	…
hypertransport.h	…
hypervisor.h	x86: Move tsc_calibration to x86_init_ops	2009-08-31 09:35:47 +02:00
i387.h	Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-14 07:58:08 -07:00
i8253.h	…
i8259.h	…
ia32.h	…
ia32_unistd.h	…
idle.h	…
init.h	…
io.h	…
io_32.h	…
io_64.h	…
io_apic.h	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-18 14:05:47 -07:00
ioctl.h	…
ioctls.h	…
iomap.h	x86, pat: Add PAT reserve free to io_mapping* APIs	2009-08-26 15:41:16 -07:00
iommu.h	…
ipcbuf.h	…
ipi.h	…
irq.h	x86: Move irq_init to x86_init_ops	2009-08-31 09:35:45 +02:00
irq_regs.h	…
irq_remapping.h	…
irq_vectors.h	…
irqflags.h	…
ist.h	…
k8.h	…
kdebug.h	…
kexec.h	…
kgdb.h	…
kmap_types.h	…
kmemcheck.h	…
kprobes.h	…
kvm.h	KVM: PIT support for HPET legacy mode	2009-09-10 08:33:12 +03:00
kvm_emulate.h	KVM: Rename x86_emulate.c to emulate.c	2009-09-10 10:46:45 +03:00
kvm_host.h	KVM: VMX: Check cpl before emulating debug register access	2009-09-10 18:11:10 +03:00
kvm_para.h	KVM: Add missing #include	2009-09-10 10:46:49 +03:00
ldt.h	…
lguest.h	…
lguest_hcall.h	…
linkage.h	…
local.h	…
mach_timer.h	…
mach_traps.h	…
math_emu.h	…
mc146818rtc.h	…
mca.h	…
mca_dma.h	…
mce.h	…
microcode.h	…
mman.h	…
mmconfig.h	…
mmu.h	…
mmu_context.h	cpumask: use mm_cpumask() wrapper: x86	2009-09-24 09:34:52 +09:30
mmx.h	…
mmzone.h	…
mmzone_32.h	…
mmzone_64.h	…
module.h	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-14 07:57:32 -07:00
mpspec.h	x86: Move get/find_smp_config to x86_init_ops	2009-08-31 09:35:45 +02:00
mpspec_def.h	…
msgbuf.h	…
msidef.h	…
msr-index.h	Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-17 21:07:08 -07:00
msr.h	x86, msr: Export the register-setting MSR functions via /dev/*/msr	2009-08-31 16:16:04 -07:00
mtrr.h	…
mutex.h	…
mutex_32.h	…
mutex_64.h	…
nmi.h	sysctl: remove "struct file *" argument of ->proc_handler	2009-09-24 07:21:04 -07:00
nops.h	x86/tracing: comment need for atomic nop	2009-09-10 17:22:44 -04:00
numa.h	…
numa_32.h	…
numa_64.h	…
numaq.h	…
olpc.h	…
page.h	…
page_32.h	…
page_32_types.h	…
page_64.h	…
page_64_types.h	…
page_types.h	…
param.h	…
paravirt.h	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-18 14:05:47 -07:00
paravirt_types.h	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-18 14:05:47 -07:00
parport.h	…
pat.h	x86, pat: New i/f for driver to request memtype for IO regions	2009-08-26 15:41:10 -07:00
pci-direct.h	…
pci-functions.h	…
pci.h	x86/PCI: default pcibus cpumask to all cpus if it lacks affinity	2009-09-18 08:51:10 -07:00
pci_64.h	…
pci_x86.h	…
percpu.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
perf_event.h	perf: Do the big rename: Performance Counters -> Performance Events	2009-09-21 14:28:04 +02:00
pgalloc.h	…
pgtable-2level.h	…
pgtable-2level_types.h	…
pgtable-3level.h	…
pgtable-3level_types.h	…
pgtable.h	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-18 14:05:47 -07:00
pgtable_32.h	…
pgtable_32_types.h	…
pgtable_64.h	…
pgtable_64_types.h	…
pgtable_types.h	Merge branch 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen into x86/urgent	2009-09-23 14:35:10 +02:00
poll.h	…
posix_types.h	…
posix_types_32.h	…
posix_types_64.h	…
prctl.h	…
processor-cyrix.h	…
processor-flags.h	…
processor.h	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-17 21:00:02 -07:00
proto.h	…
ptrace-abi.h	…
ptrace.h	…
pvclock-abi.h	…
pvclock.h	…
rdc321x_defs.h	…
reboot.h	…
reboot_fixups.h	…
required-features.h	…
resource.h	…
resume-trace.h	…
rio.h	…
rtc.h	…
rwlock.h	…
rwsem.h	…
scatterlist.h	…
seccomp.h	…
seccomp_32.h	…
seccomp_64.h	…
sections.h	…
segment.h	…
sembuf.h	…
serial.h	…
setup.h	x86: Add Moorestown early detection	2009-08-31 11:09:40 +02:00
setup_arch.h	…
shmbuf.h	…
shmparam.h	…
sigcontext.h	…
sigcontext32.h	…
sigframe.h	…
siginfo.h	…
signal.h	…
smp.h	cpumask: remove arch_send_call_function_ipi	2009-09-24 09:34:47 +09:30
smpboot_hooks.h	…
socket.h	…
sockios.h	…
sparsemem.h	…
spinlock.h	…
spinlock_types.h	…
srat.h	…
stackprotector.h	x86/i386: Make sure stack-protector segment base is cache aligned	2009-09-03 21:30:51 +02:00
stacktrace.h	…
stat.h	…
statfs.h	…
string.h	…
string_32.h	x86: Trivial whitespace cleanups	2009-09-20 20:18:57 +02:00
string_64.h	…
suspend.h	…
suspend_32.h	…
suspend_64.h	…
svm.h	…
swab.h	…
swiotlb.h	…
sync_bitops.h	…
sys_ia32.h	…
syscall.h	x86: syscall_get_nr returns int	2009-09-22 19:57:51 -07:00
syscalls.h	…
system.h	x86/i386: Make sure stack-protector segment base is cache aligned	2009-09-03 21:30:51 +02:00
system_64.h	…
tce.h	…
termbits.h	…
termios.h	…
thread_info.h	Merge branch 'x86-percpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-14 08:01:28 -07:00
time.h	x86: Move get/set_wallclock to x86_platform_ops	2009-09-16 14:34:50 +02:00
timer.h	x86: Move tsc_calibration to x86_init_ops	2009-08-31 09:35:47 +02:00
timex.h	…
tlb.h	…
tlbflush.h	…
topology.h	x86: Remove redundant non-NUMA topology functions	2009-09-24 14:16:15 +02:00
trampoline.h	…
traps.h	…
tsc.h	x86: Move tsc_calibration to x86_init_ops	2009-08-31 09:35:47 +02:00
types.h	…
uaccess.h	…
uaccess_32.h	x86: Fix uaccess_32.h typo	2009-09-20 20:19:34 +02:00
uaccess_64.h	…
ucontext.h	…
unaligned.h	…
unistd.h	…
unistd_32.h	perf: Do the big rename: Performance Counters -> Performance Events	2009-09-21 14:28:04 +02:00
unistd_64.h	perf: Do the big rename: Performance Counters -> Performance Events	2009-09-21 14:28:04 +02:00
user.h	…
user32.h	…
user_32.h	…
user_64.h	…
vdso.h	…
vga.h	…
vgtod.h	…
virtext.h	…
vm86.h	…
vmi.h	…
vmi_time.h	…
vmware.h	x86: Move tsc_calibration to x86_init_ops	2009-08-31 09:35:47 +02:00
vmx.h	KVM: VMX: more MSR_IA32_VMX_EPT_VPID_CAP capability bits	2009-09-10 08:32:55 +03:00
vsyscall.h	…
x86_init.h	x86: Move get/set_wallclock to x86_platform_ops	2009-09-16 14:34:50 +02:00
xcr.h	…
xor.h	…
xor_32.h	…
xor_64.h	…
xsave.h	…