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Ingo Molnar 95492e4646 [PATCH] x86: rewrite SMP TSC sync code 
make the TSC synchronization code more robust, and unify it between x86_64 and
i386.

The biggest change is the removal of the 'fix up TSCs' code on x86_64 and
i386, in some rare cases it was /causing/ time-warps on SMP systems.

The new code only checks for TSC asynchronity - and if it can prove a
time-warp (if it can observe the TSC going backwards when going from one CPU
to another within a critical section), then the TSC clock-source is turned
off.

The TSC synchronization-checking code also got moved into a separate file.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:13:57 -08:00
..
8253pit.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
a.out.h
[PATCH] x86_64: TASK_SIZE fixes for compatibility mode processes
2005-06-21 18:46:12 -07:00
acpi.h
ACPICA: Allow ACPI id to be u32 instead of u8.
2007-02-02 21:14:31 -05:00
agp.h
[PATCH] AGP fix for Xen VMM
2005-06-07 12:35:43 -07:00
alternative-asm.i
Remove all inclusions of <linux/config.h>
2006-10-04 03:38:54 -04:00
alternative.h
[PATCH] paravirt: Patch inline replacements for paravirt intercepts
2006-12-07 02:14:08 +01:00
apic.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
apicdef.h
x86_64: Remove stale lapic definition from apicdef.h
2006-04-01 22:50:03 -05:00
atomic.h
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
2006-12-07 08:59:11 -08:00
auxvec.h
[PATCH] auxiliary vector cleanups
2005-09-07 16:57:21 -07:00
bitops.h
[PATCH] x86-64: Fix wrong gcc check in bitops.h
2007-02-13 13:26:25 +01:00
boot.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bootsetup.h
[PATCH] Dynamic kernel command-line: x86_64
2007-02-12 09:48:39 -08:00
bug.h
[PATCH] Generic BUG for x86-64
2006-12-08 08:28:39 -08:00
bugs.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
byteorder.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cache.h
fix file specification in comments
2006-10-03 23:01:26 +02:00
cacheflush.h
[PATCH] Optimize D-cache alias handling on fork
2006-12-13 09:27:08 -08:00
calgary.h
[PATCH] Calgary: allow compiling Calgary in but not using it by default
2006-12-07 02:14:07 +01:00
calling.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
checksum.h
[NET]: X86_64 checksum annotations and cleanups.
2006-12-02 21:23:14 -08:00
compat.h
[PATCH] amd64: task_pt_regs()
2006-01-12 09:08:51 -08:00
cpu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cpufeature.h
[PATCH] x86-64: x86-64 add Intel BTS cpufeature bit and detection (take 2)
2006-12-07 02:14:11 +01:00
cputime.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
current.h
kbuild: alpha,x86_64 use generic asm-offsets.h support
2005-09-09 21:28:48 +02:00
debugreg.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
delay.h
[PATCH] x86: comment magic constants in delay.h
2006-12-07 02:14:07 +01:00
desc_defs.h
[PATCH] x86-64: Extract segment descriptor definitions for use outside
2006-12-07 02:14:04 +01:00
desc.h
[PATCH] x86-64: Extract segment descriptor definitions for use outside
2006-12-07 02:14:04 +01:00
device.h
ACPI: Change ACPI to use dev_archdata instead of firmware_data
2006-12-01 14:52:01 -08:00
div64.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dma-mapping.h
[PATCH] x86-64: define dma noncoherent API functions
2007-02-13 13:26:24 +01:00
dma.h
[PATCH] x86_64: Remove long obsolete CVS
2006-06-26 10:48:16 -07:00
dmi.h
[PATCH] x86_64: Implement early DMI scanning
2006-03-25 09:10:55 -08:00
dwarf2.h
[PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder
2006-09-26 10:52:41 +02:00
e820.h
[PATCH] x86-64: Fix fake numa for x86_64 machines with big IO hole
2007-02-13 13:26:22 +01:00
edac.h
[PATCH] EDAC: core EDAC support code
2006-01-18 19:20:31 -08:00
elf.h
[PATCH] severing module.h->sched.h
2006-12-04 02:00:22 -05:00
emergency-restart.h
[PATCH] x86_64: Implemenent machine_emergency_restart
2005-07-26 14:35:42 -07:00
errno.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
fixmap.h
[PATCH] Remove all ifdefs for local/io apic
2006-09-26 10:52:29 +02:00
floppy.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
fpu32.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
futex.h
[PATCH] mm: pagefault_{disable,enable}()
2006-12-07 08:39:21 -08:00
genapic.h
[PATCH] x86-64: add genapic_force
2006-12-07 02:14:10 +01:00
hardirq.h
[PATCH] genirq: irq: generalize the check for HARDIRQ_BITS
2006-10-04 07:55:28 -07:00
hpet.h
[PATCH] x86_64: Rename oem_force_hpet_timer to apic_is_clustered_box
2006-06-26 10:48:19 -07:00
hw_irq.h
[PATCH] x86-64: Remove fastcall references in x86_64 code
2007-02-13 13:26:22 +01:00
hypertransport.h
[PATCH] Initial generic hypertransport interrupt support
2006-10-04 07:55:29 -07:00
i387.h
[PATCH] Add __must_check to copy_*_user
2006-09-26 10:52:39 +02:00
ia32_unistd.h
[PATCH] x86_64: Remove most of ia32_unistd.h
2006-06-26 10:48:15 -07:00
ia32.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
ide.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
idle.h
[PATCH] x86_64: Add idle notifiers
2006-01-11 19:04:55 -08:00
intel_arch_perfmon.h
[PATCH] x86: i386/x86-64 Add nmi watchdog support for new Intel CPUs
2006-09-26 10:52:27 +02:00
io_apic.h
[PATCH] x86-64: update IO-APIC dest field to 8-bit for xAPIC
2007-02-13 13:26:25 +01:00
io.h
[PATCH] x86-64: Fix preprocessor condition
2007-02-13 13:26:23 +01:00
ioctl.h
[PATCH] Generic ioctl.h
2006-01-10 08:01:34 -08:00
ioctls.h
[PATCH] termios: Enable new style termios ioctls on x86-64
2006-12-08 08:28:57 -08:00
ipcbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ipi.h
[PATCH] x86_64: Remove useless KDB vector
2006-01-11 19:05:00 -08:00
irq_regs.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
irq.h
[PATCH] genirq: x86_64 irq: make vector_irq per cpu
2006-10-04 07:55:29 -07:00
irqflags.h
[PATCH] lockdep: irqtrace cleanup of include/asm-x86_64/irqflags.h
2006-07-03 15:27:03 -07:00
k8.h
[PATCH] x86_64: Clean and enhance up K8 northbridge access code
2006-06-26 10:48:15 -07:00
Kbuild
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
2006-12-07 08:59:11 -08:00
kdebug.h
[PATCH] lockdep: beautify x86_64 stacktraces
2006-07-03 15:27:02 -07:00
kexec.h
[PATCH] Avoid overwriting the current pgd (V4, x86_64)
2006-09-26 10:52:38 +02:00
kmap_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
kprobes.h
[PATCH] IA64: kprobe invalidate icache of jump buffer
2006-07-31 13:28:38 -07:00
ldt.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
linkage.h
[PATCH] Add proper alignment to ENTRY
2006-09-26 10:52:29 +02:00
local.h
[PATCH] x86_64: Fix race in cpu_local_* on preemptible kernels
2006-06-26 10:48:21 -07:00
mach_apic.h
[PATCH] x86_64 irq: Allocate a vector across all cpus for genapic_flat.
2006-10-08 12:24:02 -07:00
mc146818rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mce.h
[PATCH] x86-64: Allow to run a program when a machine check event is detected
2007-02-13 13:26:23 +01:00
mman.h
[PATCH] add asm-generic/mman.h
2006-02-15 15:32:22 -08:00
mmsegment.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mmu_context.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
mmu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mmzone.h
[PATCH] x86-64: Fix fake numa for x86_64 machines with big IO hole
2007-02-13 13:26:22 +01:00
module.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mpspec.h
[PATCH] Replace mp bus array with bitmap for bus not pci
2006-09-26 10:52:30 +02:00
msgbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
msidef.h
[PATCH] genirq: x86_64 irq: Move msi message composition into io_apic.c
2006-10-04 07:55:28 -07:00
msr.h
Merge ../linus
2006-12-12 17:41:41 -05:00
mtrr.h
Move inclusion of <linux/compat.h> out of user scope in asm-x86_64/mtrr.h
2006-05-21 22:51:13 +01:00
mutex.h
[PATCH] x86-64: Remove fastcall references in x86_64 code
2007-02-13 13:26:22 +01:00
namei.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
nmi.h
[PATCH] x86: all cpu backtrace
2006-12-07 02:14:01 +01:00
node.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
numa.h
[PATCH] Unify pxm_to_node() and node_to_pxm()
2006-06-23 07:42:48 -07:00
page.h
[PATCH] x86_64: Enlarge debug stack for nested kprobes
2006-07-28 19:28:00 -07:00
param.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
parport.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pci-direct.h
[PATCH] x86: add write_pci_config_byte() to direct PCI access routines
2006-12-07 02:14:10 +01:00
pci.h
[PATCH] x86_64: Calgary IOMMU - Calgary specific bits
2006-06-26 10:48:19 -07:00
pda.h
[PATCH] x86-64: Fix race in exit_idle
2006-11-14 16:57:46 +01:00
percpu.h
[PATCH] Fix typo in "syntax error if percpu macros are incorrectly used" patch
2006-10-06 08:53:41 -07:00
pgalloc.h
[PATCH] x86-64: remove get_pmd()
2007-02-13 13:26:23 +01:00
pgtable.h
[PATCH] x86-64: Remove mk_pte_phys()
2007-02-13 13:26:26 +01:00
poll.h
[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications
2006-03-25 08:22:56 -08:00
posix_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
prctl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
processor.h
[PATCH] x86-64: Fix interrupt race in idle callback (3rd try)
2006-12-07 02:14:13 +01:00
proto.h
[PATCH] x86: rewrite SMP TSC sync code
2007-02-16 08:13:57 -08:00
ptrace-abi.h
[PATCH] Split i386 and x86_64 ptrace.h
2006-09-26 08:49:10 -07:00
ptrace.h
[PATCH] Add regs_return_value() helper
2006-10-02 07:57:16 -07:00
resource.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rio.h
[PATCH] Calgary: check BBAR ioremap success when ioremapping
2006-12-07 02:14:06 +01:00
rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rwlock.h
[PATCH] Clean up spin/rwlocks
2006-09-26 10:52:32 +02:00
scatterlist.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
seccomp.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sections.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
segment.h
[PATCH] Add the vgetcpu vsyscall
2006-09-26 10:52:28 +02:00
semaphore.h
[PATCH] Use early clobber in semaphores
2006-09-30 01:47:55 +02:00
sembuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
serial.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
setup.h
[PATCH] x86_64: 2048-byte command line
2007-02-12 09:48:39 -08:00
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
sigcontext32.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
[PATCH] Add TIF_RESTORE_SIGMASK
2006-09-26 10:52:26 +02:00
smp.h
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
2006-12-07 08:59:11 -08:00
socket.h
[AF_UNIX]: Datagram getpeersec
2006-06-29 16:58:06 -07:00
sockios.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sparsemem.h
[PATCH] add x86-64 specific support for sparsemem
2005-06-23 09:45:07 -07:00
spinlock_types.h
[PATCH] Remove 'volatile' from spinlock_types
2006-12-06 14:39:53 -08:00
spinlock.h
[PATCH] x86-64: Don't keep interrupts disabled while spinning in spinlocks
2006-12-07 02:14:00 +01:00
stacktrace.h
[PATCH] x86: add sysctl for kstack_depth_to_print
2006-12-07 02:14:11 +01:00
stat.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
statfs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
string.h
[PATCH] x86_64: Use __always_inline for __inline_memcpy
2006-06-26 10:48:14 -07:00
suspend.h
[PATCH] x86_64: eliminate set_debug()
2006-03-25 09:10:52 -08:00
swiotlb.h
[IA64] swiotlb abstraction (e.g. for Xen)
2007-02-05 18:53:04 -08:00
system.h
[PATCH] Don't leak NT bit into next task
2006-09-26 10:52:41 +02:00
tce.h
[PATCH] Calgary IOMMU: consolidate per bus data structures
2006-09-26 10:52:31 +02:00
termbits.h
[PATCH] termios: Enable new style termios ioctls on x86-64
2006-12-08 08:28:57 -08:00
termios.h
[PATCH] consolidate line discipline number definitions
2007-02-11 10:51:26 -08:00
therm_throt.h
[PATCH] x86: Refactor thermal throttle processing
2006-09-26 10:52:42 +02:00
thread_info.h
[PATCH] PM: Fix SMP races in the freezer
2006-12-13 09:05:49 -08:00
timex.h
[PATCH] x86: rewrite SMP TSC sync code
2007-02-16 08:13:57 -08:00
tlb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
tlbflush.h
[PATCH] Clean up and minor fixes to TLB flush
2006-09-26 10:52:29 +02:00
topology.h
[PATCH] sched: add option to serialize load balancing
2006-12-10 09:55:43 -08:00
tsc.h
[PATCH] x86: rewrite SMP TSC sync code
2007-02-16 08:13:57 -08:00
types.h
[PATCH] Centralise definitions of sector_t and blkcnt_t
2006-12-04 19:41:15 -08:00
uaccess.h
[PATCH] x86-64: Add __copy_from_user_nocache
2007-02-13 13:26:19 +01:00
ucontext.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
[PATCH] remove kernel syscalls
2006-12-07 08:39:37 -08:00
unwind.h
Remove stack unwinder for now
2006-12-15 08:47:51 -08:00
user32.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
vga.h
[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use
2006-06-22 15:05:58 -07:00
vsyscall32.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
vsyscall.h
[PATCH] x86-64: get rid of ARCH_HAVE_XTIME_LOCK
2007-02-13 13:26:21 +01:00
xor.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00