[GIT pull] timer updates for 3.5

[Thomas Gleixner]

Linus,

please pull the latest timers-core-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-core-for-linus

The Kconfig series will cause a tiny problem with sparc. sparc32
became a new user of GENERIC_CLOCKEVENTS, so it needs the following
fixlet after merging it in your tree.

--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -33,6 +33,7 @@ config SPARC
select GENERIC_CMOS_UPDATE
select HAVE_BPF_JIT
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_CLOCKEVENTS

config SPARC32
def_bool !64BIT
@@ -66,7 +67,6 @@ config SPARC64
select IRQ_PREFLOW_FASTEOI
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select HAVE_C_RECORDMCOUNT
- select GENERIC_CLOCKEVENTS
select NO_BOOTMEM

config ARCH_DEFCONFIG


Thanks,

tglx

------------------>
Anna-Maria Gleixner (22):
alpha: Use generic time config
arm: Use generic time config
avr32: Use generic time config
blackfin: Use generic time config
c6x: Use generic time config
cris: Use generic time config
hexagon: Use generic time config
ia64: Use generic time config
m32r: Use generic time config
m68k: Use generic time config
microblaze: Use generic time config
mips: Use generic time config
mn10300: Use generic time config
powerpc: Use generic time config
openrisc: Use generic time config
s390: Use generic time config
score: Use generic time config
sh: Use generic time config
sparc: Use: generic time config
tile: Use generic time config
um: Use generic time config
unicore32: Use generic time config

Jan Beulich (2):
x86: Clear HPET configuration registers on startup
x86: Allow multiple values to be specified with "hpet="

Richard Cochran (4):
ntp: Correct TAI offset during leap second
ntp: Fix a stale comment and a few stray newlines.
time: remove obsolete declaration
timekeeping: Fix a few minor newline issues.

Thomas Gleixner (3):
timers: Provide generic Kconfig switches
x86: Use generic time config
timers: Fixup the Kconfig consolidation fallout


arch/alpha/Kconfig | 4 +--
arch/arm/Kconfig | 20 +------------
arch/avr32/Kconfig | 6 +---
arch/blackfin/Kconfig | 10 ++-----
arch/c6x/Kconfig | 8 +-----
arch/cris/Kconfig | 7 +----
arch/h8300/Kconfig.cpu | 2 -
arch/hexagon/Kconfig | 16 ++---------
arch/ia64/Kconfig | 9 +-----
arch/m32r/Kconfig | 4 +--
arch/m68k/Kconfig | 11 +-------
arch/microblaze/Kconfig | 9 +-----
arch/mips/Kconfig | 15 +---------
arch/mn10300/Kconfig | 8 +-----
arch/openrisc/Kconfig | 5 +---
arch/powerpc/Kconfig | 13 ++-------
arch/s390/Kconfig | 14 ++-------
arch/score/Kconfig | 5 +---
arch/sh/Kconfig | 15 +---------
arch/sparc/Kconfig | 17 ++---------
arch/tile/Kconfig | 6 +---
arch/um/Kconfig.common | 5 +---
arch/um/Kconfig.um | 1 -
arch/unicore32/Kconfig | 5 ---
arch/x86/Kconfig | 33 +++++-----------------
arch/x86/kernel/hpet.c | 66 ++++++++++++++++++++++++++++++++++++++------
include/linux/time.h | 1 -
init/Kconfig | 1 +
kernel/time/Kconfig | 58 ++++++++++++++++++++++++++++++++++-----
kernel/time/ntp.c | 8 ++---
kernel/time/timekeeping.c | 4 +--
31 files changed, 155 insertions(+), 231 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 22e58a9..77ba268 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -15,6 +15,7 @@ config ALPHA
select GENERIC_IRQ_SHOW
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select GENERIC_CMOS_UPDATE
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
@@ -47,9 +48,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y

-config GENERIC_CMOS_UPDATE
- def_bool y
-
config GENERIC_GPIO
bool

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 36586dba..c1e5f07 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -34,6 +34,8 @@ config ARM
select CPU_PM if (SUSPEND || CPU_IDLE)
select GENERIC_PCI_IOMAP
select HAVE_BPF_JIT if NET
+ select KTIME_SCALAR
+ select GENERIC_CLOCKEVENTS_BROADCAST if SMP
help
The ARM series is a line of low-power-consumption RISC chip designs
licensed by ARM Ltd and targeted at embedded applications and
@@ -57,22 +59,6 @@ config SYS_SUPPORTS_APM_EMULATION
config GENERIC_GPIO
bool

-config ARCH_USES_GETTIMEOFFSET
- bool
- default n
-
-config GENERIC_CLOCKEVENTS
- bool
-
-config GENERIC_CLOCKEVENTS_BROADCAST
- bool
- depends on GENERIC_CLOCKEVENTS
- default y if SMP
-
-config KTIME_SCALAR
- bool
- default y
-
config HAVE_TCM
bool
select GENERIC_ALLOCATOR
@@ -1473,8 +1459,6 @@ endmenu

menu "Kernel Features"

-source "kernel/time/Kconfig"
-
config HAVE_SMP
bool
help
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig
index 3dea7231..f8bc2d2 100644
--- a/arch/avr32/Kconfig
+++ b/arch/avr32/Kconfig
@@ -12,6 +12,7 @@ config AVR32
select HARDIRQS_SW_RESEND
select GENERIC_IRQ_SHOW
select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select GENERIC_CLOCKEVENTS
help
AVR32 is a high-performance 32-bit RISC microprocessor core,
designed for cost-sensitive embedded applications, with particular
@@ -35,9 +36,6 @@ config TRACE_IRQFLAGS_SUPPORT
config RWSEM_GENERIC_SPINLOCK
def_bool y

-config GENERIC_CLOCKEVENTS
- def_bool y
-
config RWSEM_XCHGADD_ALGORITHM
def_bool n

@@ -63,8 +61,6 @@ source "kernel/Kconfig.freezer"

menu "System Type and features"

-source "kernel/time/Kconfig"
-
config SUBARCH_AVR32B
bool
config MMU
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 373a690..f7897ee 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -37,6 +37,7 @@ config BLACKFIN
select GENERIC_IRQ_PROBE
select IRQ_PER_CPU if SMP
select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
+ select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS

config GENERIC_CSUM
def_bool y
@@ -593,9 +594,10 @@ comment "Kernel Timer/Scheduler"

source kernel/Kconfig.hz

-config GENERIC_CLOCKEVENTS
+config SET_GENERIC_CLOCKEVENTS
bool "Generic clock events"
default y
+ select GENERIC_CLOCKEVENTS

menu "Clock event device"
depends on GENERIC_CLOCKEVENTS
@@ -629,12 +631,6 @@ config GPTMR0_CLOCKSOURCE
depends on !TICKSOURCE_GPTMR0
endmenu

-config ARCH_USES_GETTIMEOFFSET
- depends on !GENERIC_CLOCKEVENTS
- def_bool y
-
-source kernel/time/Kconfig
-
comment "Misc"

choice
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index 1c3ccd4..9d446ef 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -15,6 +15,7 @@ config TMS320C6X
select IRQ_DOMAIN
select OF
select OF_EARLY_FLATTREE
+ select GENERIC_CLOCKEVENTS

config MMU
def_bool n
@@ -43,12 +44,6 @@ config GENERIC_CALIBRATE_DELAY
config GENERIC_HWEIGHT
def_bool y

-config GENERIC_CLOCKEVENTS
- def_bool y
-
-config GENERIC_CLOCKEVENTS_BROADCAST
- bool
-
config GENERIC_BUG
def_bool y

@@ -137,7 +132,6 @@ source "mm/Kconfig"
source "kernel/Kconfig.preempt"

source "kernel/Kconfig.hz"
-source "kernel/time/Kconfig"

endmenu

diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index b3abfb0..4a63e7e 100644
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -13,12 +13,6 @@ config RWSEM_GENERIC_SPINLOCK
config RWSEM_XCHGADD_ALGORITHM
bool

-config GENERIC_CMOS_UPDATE
- def_bool y
-
-config ARCH_USES_GETTIMEOFFSET
- def_bool n
-
config ARCH_HAS_ILOG2_U32
bool
default n
@@ -49,6 +43,7 @@ config CRIS
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_SHOW
select GENERIC_IOMAP
+ select GENERIC_CMOS_UPDATE

config HZ
int
diff --git a/arch/h8300/Kconfig.cpu b/arch/h8300/Kconfig.cpu
index 15c2228..321f392 100644
--- a/arch/h8300/Kconfig.cpu
+++ b/arch/h8300/Kconfig.cpu
@@ -1,7 +1,5 @@
menu "Processor type and features"

-source "kernel/time/Kconfig"
-
choice
prompt "H8/300 platform"
default H8300H_GENERIC
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 9059e39..35f6c32 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -28,6 +28,9 @@ config HEXAGON
select NO_IOPORT
select GENERIC_IOMAP
# mostly generic routines, with some accelerated ones
+ select KTIME_SCALAR
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_CLOCKEVENTS_BROADCAST
---help---
Qualcomm Hexagon is a processor architecture designed for high
performance and low power across a wide variety of applications.
@@ -56,9 +59,6 @@ config PCI
config EARLY_PRINTK
def_bool y

-config KTIME_SCALAR
- def_bool y
-
config MMU
def_bool y

@@ -98,15 +98,6 @@ config GENERIC_FIND_NEXT_BIT
config GENERIC_HWEIGHT
def_bool y

-config GENERIC_TIME
- def_bool y
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
-config GENERIC_CLOCKEVENTS_BROADCAST
- def_bool y
-
config STACKTRACE_SUPPORT
def_bool y
select STACKTRACE
@@ -192,7 +183,6 @@ endchoice
source "mm/Kconfig"

source "kernel/Kconfig.hz"
-source "kernel/time/Kconfig"

config GENERIC_GPIO
bool "Generic GPIO support"
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index bd72669..9f9d57b 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -33,6 +33,8 @@ config IA64
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP
+ select ARCH_CLOCKSOURCE_DATA
+ select GENERIC_TIME_VSYSCALL
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
@@ -88,10 +90,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y

-config GENERIC_TIME_VSYSCALL
- bool
- default y
-
config HAVE_SETUP_PER_CPU_AREA
def_bool y

@@ -106,9 +104,6 @@ config EFI
bool
default y

-config ARCH_CLOCKSOURCE_DATA
- def_bool y
-
config SCHED_OMIT_FRAME_POINTER
bool
default y
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index ef80a65..b638d5b 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -11,6 +11,7 @@ config M32R
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_ATOMIC64
+ select ARCH_USES_GETTIMEOFFSET

config SBUS
bool
@@ -33,9 +34,6 @@ config HZ
int
default 100

-config ARCH_USES_GETTIMEOFFSET
- def_bool y
-
source "init/Kconfig"

source "kernel/Kconfig.freezer"
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index d318c60..cac5b6b 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -8,6 +8,7 @@ config M68K
select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
select GENERIC_CPU_DEVICES
select FPU if MMU
+ select ARCH_USES_GETTIMEOFFSET if MMU && !COLDFIRE

config RWSEM_GENERIC_SPINLOCK
bool
@@ -22,9 +23,6 @@ config ARCH_HAS_ILOG2_U32
config ARCH_HAS_ILOG2_U64
bool

-config GENERIC_CLOCKEVENTS
- bool
-
config GENERIC_GPIO
bool

@@ -43,9 +41,6 @@ config TIME_LOW_RES
bool
default y

-config ARCH_USES_GETTIMEOFFSET
- def_bool MMU && !COLDFIRE
-
config NO_IOPORT
def_bool y

@@ -111,10 +106,6 @@ if COLDFIRE
source "kernel/Kconfig.preempt"
endif

-if !MMU || COLDFIRE
-source "kernel/time/Kconfig"
-endif
-
source "mm/Kconfig"

endmenu
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index ac22dc7..8346046 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -22,6 +22,7 @@ config MICROBLAZE
select GENERIC_PCI_IOMAP
select GENERIC_CPU_DEVICES
select GENERIC_ATOMIC64
+ select GENERIC_CLOCKEVENTS

config SWAP
def_bool n
@@ -50,12 +51,6 @@ config GENERIC_HWEIGHT
config GENERIC_CALIBRATE_DELAY
def_bool y

-config GENERIC_TIME_VSYSCALL
- def_bool n
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
config GENERIC_GPIO
def_bool y

@@ -79,8 +74,6 @@ source "arch/microblaze/platform/Kconfig.platform"

menu "Processor type and features"

-source "kernel/time/Kconfig"
-
source "kernel/Kconfig.preempt"

source "kernel/Kconfig.hz"
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index ce30e2f..b65a730 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -29,6 +29,8 @@ config MIPS
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select ARCH_DISCARD_MEMBLOCK
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_CMOS_UPDATE

menu "Machine selection"

@@ -856,14 +858,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y

-config GENERIC_CLOCKEVENTS
- bool
- default y
-
-config GENERIC_CMOS_UPDATE
- bool
- default y
-
config SCHED_OMIT_FRAME_POINTER
bool
default y
@@ -2050,9 +2044,6 @@ config CPU_HAS_SYNC
depends on !CPU_R3000
default y

-config GENERIC_CLOCKEVENTS_BROADCAST
- bool
-
#
# CPU non-features
#
@@ -2214,8 +2205,6 @@ config NR_CPUS
performance should round up your number of processors to the next
power of two.

-source "kernel/time/Kconfig"
-
#
# Timer Interrupt Frequency Configuration
#
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index 3aa3de0..687f9b4 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -6,6 +6,7 @@ config MN10300
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_KGDB
select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER
+ select GENERIC_CLOCKEVENTS

config AM33_2
def_bool n
@@ -42,15 +43,9 @@ config RWSEM_XCHGADD_ALGORITHM
config GENERIC_CALIBRATE_DELAY
def_bool y

-config GENERIC_CMOS_UPDATE
- def_bool n
-
config GENERIC_HWEIGHT
def_bool y

-config GENERIC_CLOCKEVENTS
- def_bool y
-
config GENERIC_BUG
def_bool y

@@ -231,7 +226,6 @@ config MN10300_USING_JTAG
single-stepping, which are taken over completely by the JTAG unit.

source "kernel/Kconfig.hz"
-source "kernel/time/Kconfig"

config MN10300_RTC
bool "Using MN10300 RTC"
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index a478719..7065303 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -17,6 +17,7 @@ config OPENRISC
select GENERIC_IOMAP
select GENERIC_CPU_DEVICES
select GENERIC_ATOMIC64
+ select GENERIC_CLOCKEVENTS

config MMU
def_bool y
@@ -46,9 +47,6 @@ config NO_IOPORT
config GENERIC_GPIO
def_bool y

-config GENERIC_CLOCKEVENTS
- def_bool y
-
config TRACE_IRQFLAGS_SUPPORT
def_bool y

@@ -108,7 +106,6 @@ config OPENRISC_HAVE_INST_DIV
endmenu


-source "kernel/time/Kconfig"
source kernel/Kconfig.hz
source kernel/Kconfig.preempt
source "mm/Kconfig"
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index feab3ba..d47cf7f 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -27,15 +27,6 @@ config MMU
bool
default y

-config GENERIC_CMOS_UPDATE
- def_bool y
-
-config GENERIC_TIME_VSYSCALL
- def_bool y
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
config HAVE_SETUP_PER_CPU_AREA
def_bool PPC64

@@ -144,6 +135,9 @@ config PPC
select HAVE_BPF_JIT if (PPC64 && NET)
select HAVE_ARCH_JUMP_LABEL
select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select GENERIC_CMOS_UPDATE
+ select GENERIC_TIME_VSYSCALL
+ select GENERIC_CLOCKEVENTS

config EARLY_PRINTK
bool
@@ -284,7 +278,6 @@ config HIGHMEM
bool "High memory support"
depends on PPC32

-source kernel/time/Kconfig
source kernel/Kconfig.hz
source kernel/Kconfig.preempt
source "fs/Kconfig.binfmt"
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 9015060..d0325d9 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -28,12 +28,6 @@ config ARCH_HAS_ILOG2_U64
config GENERIC_HWEIGHT
def_bool y

-config GENERIC_TIME_VSYSCALL
- def_bool y
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
config GENERIC_BUG
def_bool y if BUG

@@ -122,6 +116,9 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_BH
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
+ select GENERIC_TIME_VSYSCALL
+ select GENERIC_CLOCKEVENTS
+ select KTIME_SCALAR if 32BIT

config SCHED_OMIT_FRAME_POINTER
def_bool y
@@ -134,8 +131,6 @@ menu "Base setup"

comment "Processor type and features"

-source "kernel/time/Kconfig"
-
config 64BIT
def_bool y
prompt "64 bit kernel"
@@ -146,9 +141,6 @@ config 64BIT
config 32BIT
def_bool y if !64BIT

-config KTIME_SCALAR
- def_bool 32BIT
-
config SMP
def_bool y
prompt "Symmetric multi-processing support"
diff --git a/arch/score/Kconfig b/arch/score/Kconfig
index 4b28577..ba0f412 100644
--- a/arch/score/Kconfig
+++ b/arch/score/Kconfig
@@ -9,6 +9,7 @@ config SCORE
select HAVE_MEMBLOCK_NODE_MAP
select ARCH_DISCARD_MEMBLOCK
select GENERIC_CPU_DEVICES
+ select GENERIC_CLOCKEVENTS

choice
prompt "System type"
@@ -51,9 +52,6 @@ config GENERIC_HWEIGHT
config GENERIC_CALIBRATE_DELAY
def_bool y

-config GENERIC_CLOCKEVENTS
- def_bool y
-
menu "Kernel type"

config 32BIT
@@ -68,7 +66,6 @@ config MEMORY_START
hex
default 0xa0000000

-source "kernel/time/Kconfig"
source "kernel/Kconfig.hz"
source "kernel/Kconfig.preempt"

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index ff9e033..820dfe3 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -28,6 +28,8 @@ config SUPERH
select RTC_LIB
select GENERIC_ATOMIC64
select GENERIC_IRQ_SHOW
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
help
The SuperH is a RISC processor targeted for use in embedded systems
and consumer electronics; it was also used in the Sega Dreamcast
@@ -86,16 +88,6 @@ config GENERIC_GPIO
config GENERIC_CALIBRATE_DELAY
bool

-config GENERIC_CLOCKEVENTS
- def_bool y
-
-config GENERIC_CLOCKEVENTS_BROADCAST
- bool
-
-config GENERIC_CMOS_UPDATE
- def_bool y
- depends on SH_SH03 || SH_DREAMCAST
-
config GENERIC_LOCKBREAK
def_bool y
depends on SMP && PREEMPT
@@ -585,9 +577,6 @@ config SH_CLK_CPG_LEGACY
depends on SH_CLK_CPG
def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
!CPU_SHX3 && !CPU_SUBTYPE_SH7757
-
-source "kernel/time/Kconfig"
-
endmenu

menu "CPU Frequency scaling"
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 6c0683d..b5a035a 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -30,11 +30,13 @@ config SPARC
select USE_GENERIC_SMP_HELPERS if SMP
select GENERIC_PCI_IOMAP
select HAVE_NMI_WATCHDOG if SPARC64
+ select GENERIC_CMOS_UPDATE

config SPARC32
def_bool !64BIT
select GENERIC_ATOMIC64
select CLZ_TAB
+ select ARCH_USES_GETTIMEOFFSET

config SPARC64
def_bool 64BIT
@@ -61,6 +63,7 @@ config SPARC64
select IRQ_PREFLOW_FASTEOI
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select HAVE_C_RECORDMCOUNT
+ select GENERIC_CLOCKEVENTS

config ARCH_DEFCONFIG
string
@@ -73,18 +76,6 @@ config BITS
default 32 if SPARC32
default 64 if SPARC64

-config ARCH_USES_GETTIMEOFFSET
- bool
- default y if SPARC32
-
-config GENERIC_CMOS_UPDATE
- bool
- default y
-
-config GENERIC_CLOCKEVENTS
- bool
- default y if SPARC64
-
config IOMMU_HELPER
bool
default y if SPARC64
@@ -275,8 +266,6 @@ config HOTPLUG_CPU
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.

-source "kernel/time/Kconfig"
-
if SPARC64
source "drivers/cpufreq/Kconfig"

diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 96033e2..4eec3a1 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -13,6 +13,7 @@ config TILE
select GENERIC_IRQ_SHOW
select SYS_HYPERVISOR
select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select GENERIC_CLOCKEVENTS

# FIXME: investigate whether we need/want these options.
# select HAVE_IOREMAP_PROT
@@ -46,9 +47,6 @@ config NEED_PER_CPU_PAGE_FIRST_CHUNK
config SYS_SUPPORTS_HUGETLBFS
def_bool y

-config GENERIC_CLOCKEVENTS
- def_bool y
-
# FIXME: tilegx can implement a more efficient rwsem.
config RWSEM_GENERIC_SPINLOCK
def_bool y
@@ -138,8 +136,6 @@ config NR_CPUS
smaller kernel memory footprint results from using a smaller
value on chips with fewer tiles.

-source "kernel/time/Kconfig"
-
source "kernel/Kconfig.hz"

config KEXEC
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index 20a49ba..806185d 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -10,6 +10,7 @@ config UML
select GENERIC_IRQ_SHOW
select GENERIC_CPU_DEVICES
select GENERIC_IO
+ select GENERIC_CLOCKEVENTS

config MMU
bool
@@ -52,10 +53,6 @@ config GENERIC_BUG
default y
depends on BUG

-config GENERIC_CLOCKEVENTS
- bool
- default y
-
# Used in kernel/irq/manage.c and include/linux/irq.h
config IRQ_RELEASE_METHOD
bool
diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um
index 70fd690..bf87f25 100644
--- a/arch/um/Kconfig.um
+++ b/arch/um/Kconfig.um
@@ -10,7 +10,6 @@ config STATIC_LINK
2.75G) for UML.

source "mm/Kconfig"
-source "kernel/time/Kconfig"

config LD_SCRIPT_STATIC
bool
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index eeb8054..47ad521 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -25,9 +25,6 @@ config HAVE_PWM
config GENERIC_GPIO
def_bool y

-config GENERIC_CLOCKEVENTS
- bool
-
config GENERIC_CSUM
def_bool y

@@ -146,8 +143,6 @@ endmenu

menu "Kernel Features"

-source "kernel/time/Kconfig"
-
source "kernel/Kconfig.preempt"

source "kernel/Kconfig.hz"
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c9866b0..1b1e049 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -82,6 +82,13 @@ config X86
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP
select DCACHE_WORD_ACCESS
+ select GENERIC_CMOS_UPDATE
+ select CLOCKSOURCE_WATCHDOG
+ select GENERIC_CLOCKEVENTS
+ select ARCH_CLOCKSOURCE_DATA if X86_64
+ select GENERIC_CLOCKEVENTS_BROADCAST if X86_64 || (X86_32 && X86_LOCAL_APIC)
+ select GENERIC_TIME_VSYSCALL if X86_64
+ select KTIME_SCALAR if X86_32

config INSTRUCTION_DECODER
def_bool (KPROBES || PERF_EVENTS)
@@ -96,23 +103,6 @@ config ARCH_DEFCONFIG
default "arch/x86/configs/i386_defconfig" if X86_32
default "arch/x86/configs/x86_64_defconfig" if X86_64

-config GENERIC_CMOS_UPDATE
- def_bool y
-
-config CLOCKSOURCE_WATCHDOG
- def_bool y
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
-config ARCH_CLOCKSOURCE_DATA
- def_bool y
- depends on X86_64
-
-config GENERIC_CLOCKEVENTS_BROADCAST
- def_bool y
- depends on X86_64 || (X86_32 && X86_LOCAL_APIC)
-
config LOCKDEP_SUPPORT
def_bool y

@@ -166,10 +156,6 @@ config ARCH_HAS_CPU_IDLE_WAIT
config GENERIC_CALIBRATE_DELAY
def_bool y

-config GENERIC_TIME_VSYSCALL
- bool
- default X86_64
-
config ARCH_HAS_CPU_RELAX
def_bool y

@@ -236,9 +222,6 @@ config ARCH_HWEIGHT_CFLAGS
default "-fcall-saved-ecx -fcall-saved-edx" if X86_32
default "-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" if X86_64

-config KTIME_SCALAR
- def_bool X86_32
-
config ARCH_CPU_PROBE_RELEASE
def_bool y
depends on HOTPLUG_CPU
@@ -258,8 +241,6 @@ config ZONE_DMA

If unsure, say Y.

-source "kernel/time/Kconfig"
-
config SMP
bool "Symmetric multi-processing support"
---help---
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index ad0de0c..9cc7b43 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -94,13 +94,18 @@ static int hpet_verbose;

static int __init hpet_setup(char *str)
{
- if (str) {
+ while (str) {
+ char *next = strchr(str, ',');
+
+ if (next)
+ *next++ = 0;
if (!strncmp("disable", str, 7))
boot_hpet_disable = 1;
if (!strncmp("force", str, 5))
hpet_force_user = 1;
if (!strncmp("verbose", str, 7))
hpet_verbose = 1;
+ str = next;
}
return 1;
}
@@ -319,8 +324,6 @@ static void hpet_set_mode(enum clock_event_mode mode,
now = hpet_readl(HPET_COUNTER);
cmp = now + (unsigned int) delta;
cfg = hpet_readl(HPET_Tn_CFG(timer));
- /* Make sure we use edge triggered interrupts */
- cfg &= ~HPET_TN_LEVEL;
cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC |
HPET_TN_SETVAL | HPET_TN_32BIT;
hpet_writel(cfg, HPET_Tn_CFG(timer));
@@ -787,15 +790,16 @@ static int hpet_clocksource_register(void)
return 0;
}

+static u32 *hpet_boot_cfg;
+
/**
* hpet_enable - Try to setup the HPET timer. Returns 1 on success.
*/
int __init hpet_enable(void)
{
- unsigned long hpet_period;
- unsigned int id;
+ u32 hpet_period, cfg, id;
u64 freq;
- int i;
+ unsigned int i, last;

if (!is_hpet_capable())
return 0;
@@ -847,15 +851,45 @@ int __init hpet_enable(void)
id = hpet_readl(HPET_ID);
hpet_print_config();

+ last = (id & HPET_ID_NUMBER) >> HPET_ID_NUMBER_SHIFT;
+
#ifdef CONFIG_HPET_EMULATE_RTC
/*
* The legacy routing mode needs at least two channels, tick timer
* and the rtc emulation channel.
*/
- if (!(id & HPET_ID_NUMBER))
+ if (!last)
goto out_nohpet;
#endif

+ cfg = hpet_readl(HPET_CFG);
+ hpet_boot_cfg = kmalloc((last + 2) * sizeof(*hpet_boot_cfg),
+ GFP_KERNEL);
+ if (hpet_boot_cfg)
+ *hpet_boot_cfg = cfg;
+ else
+ pr_warn("HPET initial state will not be saved\n");
+ cfg &= ~(HPET_CFG_ENABLE | HPET_CFG_LEGACY);
+ hpet_writel(cfg, HPET_Tn_CFG(i));
+ if (cfg)
+ pr_warn("HPET: Unrecognized bits %#x set in global cfg\n",
+ cfg);
+
+ for (i = 0; i <= last; ++i) {
+ cfg = hpet_readl(HPET_Tn_CFG(i));
+ if (hpet_boot_cfg)
+ hpet_boot_cfg[i + 1] = cfg;
+ cfg &= ~(HPET_TN_ENABLE | HPET_TN_LEVEL | HPET_TN_FSB);
+ hpet_writel(cfg, HPET_Tn_CFG(i));
+ cfg &= ~(HPET_TN_PERIODIC | HPET_TN_PERIODIC_CAP
+ | HPET_TN_64BIT_CAP | HPET_TN_32BIT | HPET_TN_ROUTE
+ | HPET_TN_FSB | HPET_TN_FSB_CAP);
+ if (cfg)
+ pr_warn("HPET: Unrecognized bits %#x set in cfg#%u\n",
+ cfg, i);
+ }
+ hpet_print_config();
+
if (hpet_clocksource_register())
goto out_nohpet;

@@ -923,14 +957,28 @@ fs_initcall(hpet_late_init);
void hpet_disable(void)
{
if (is_hpet_capable() && hpet_virt_address) {
- unsigned int cfg = hpet_readl(HPET_CFG);
+ unsigned int cfg = hpet_readl(HPET_CFG), id, last;

- if (hpet_legacy_int_enabled) {
+ if (hpet_boot_cfg)
+ cfg = *hpet_boot_cfg;
+ else if (hpet_legacy_int_enabled) {
cfg &= ~HPET_CFG_LEGACY;
hpet_legacy_int_enabled = 0;
}
cfg &= ~HPET_CFG_ENABLE;
hpet_writel(cfg, HPET_CFG);
+
+ if (!hpet_boot_cfg)
+ return;
+
+ id = hpet_readl(HPET_ID);
+ last = ((id & HPET_ID_NUMBER) >> HPET_ID_NUMBER_SHIFT);
+
+ for (id = 0; id <= last; ++id)
+ hpet_writel(hpet_boot_cfg[id + 1], HPET_Tn_CFG(id));
+
+ if (*hpet_boot_cfg & HPET_CFG_ENABLE)
+ hpet_writel(*hpet_boot_cfg, HPET_CFG);
}
}

diff --git a/include/linux/time.h b/include/linux/time.h
index 33a92ea..179f4d6 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -167,7 +167,6 @@ extern void get_monotonic_boottime(struct timespec *ts);
extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
extern int timekeeping_valid_for_hres(void);
extern u64 timekeeping_max_deferment(void);
-extern void timekeeping_leap_insert(int leapsecond);
extern int timekeeping_inject_offset(struct timespec *ts);

struct tms;
diff --git a/init/Kconfig b/init/Kconfig
index 6cfd71d..528a0c4 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -387,6 +387,7 @@ config AUDIT_LOGINUID_IMMUTABLE
but may not be backwards compatible with older init systems.

source "kernel/irq/Kconfig"
+source "kernel/time/Kconfig"

menu "RCU Subsystem"

diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig
index a20dc8a..fd42bd4 100644
--- a/kernel/time/Kconfig
+++ b/kernel/time/Kconfig
@@ -2,6 +2,55 @@
# Timer subsystem related configuration options
#

+# Options selectable by arch Kconfig
+
+# Watchdog function for clocksources to detect instabilities
+config CLOCKSOURCE_WATCHDOG
+ bool
+
+# Architecture has extra clocksource data
+config ARCH_CLOCKSOURCE_DATA
+ bool
+
+# Timekeeping vsyscall support
+config GENERIC_TIME_VSYSCALL
+ bool
+
+# ktime_t scalar 64bit nsec representation
+config KTIME_SCALAR
+ bool
+
+# Old style timekeeping
+config ARCH_USES_GETTIMEOFFSET
+ bool
+
+# The generic clock events infrastructure
+config GENERIC_CLOCKEVENTS
+ bool
+
+# Migration helper. Builds, but does not invoke
+config GENERIC_CLOCKEVENTS_BUILD
+ bool
+ default y
+ depends on GENERIC_CLOCKEVENTS
+
+# Clockevents broadcasting infrastructure
+config GENERIC_CLOCKEVENTS_BROADCAST
+ bool
+ depends on GENERIC_CLOCKEVENTS
+
+# Automatically adjust the min. reprogramming time for
+# clock event device
+config GENERIC_CLOCKEVENTS_MIN_ADJUST
+ bool
+
+# Generic update of CMOS clock
+config GENERIC_CMOS_UPDATE
+ bool
+
+if GENERIC_CLOCKEVENTS
+menu "Timers subsystem"
+
# Core internal switch. Selected by NO_HZ / HIGH_RES_TIMERS. This is
# only related to the tick functionality. Oneshot clockevent devices
# are supported independ of this.
@@ -26,10 +75,5 @@ config HIGH_RES_TIMERS
hardware is not capable then this option only increases
the size of the kernel image.

-config GENERIC_CLOCKEVENTS_BUILD
- bool
- default y
- depends on GENERIC_CLOCKEVENTS
-
-config GENERIC_CLOCKEVENTS_MIN_ADJUST
- bool
+endmenu
+endif
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index f03fd83..70b33ab 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -412,6 +412,7 @@ int second_overflow(unsigned long secs)
if (secs % 86400 == 0) {
leap = -1;
time_state = TIME_OOP;
+ time_tai++;
printk(KERN_NOTICE
"Clock: inserting leap second 23:59:60 UTC\n");
}
@@ -426,7 +427,6 @@ int second_overflow(unsigned long secs)
}
break;
case TIME_OOP:
- time_tai++;
time_state = TIME_WAIT;
break;

@@ -473,8 +473,6 @@ int second_overflow(unsigned long secs)
<< NTP_SCALE_SHIFT;
time_adjust = 0;

-
-
out:
spin_unlock_irqrestore(&ntp_lock, flags);

@@ -559,10 +557,10 @@ static inline void process_adj_status(struct timex *txc, struct timespec *ts)
/* only set allowed bits */
time_status &= STA_RONLY;
time_status |= txc->status & ~STA_RONLY;
-
}
+
/*
- * Called with the xtime lock held, so we can access and modify
+ * Called with ntp_lock held, so we can access and modify
* all the global NTP state:
*/
static inline void process_adjtimex_modes(struct timex *txc, struct timespec *ts)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index d66b213..6e46cac 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -240,7 +240,6 @@ void getnstimeofday(struct timespec *ts)

timespec_add_ns(ts, nsecs);
}
-
EXPORT_SYMBOL(getnstimeofday);

ktime_t ktime_get(void)
@@ -357,8 +356,8 @@ void do_gettimeofday(struct timeval *tv)
tv->tv_sec = now.tv_sec;
tv->tv_usec = now.tv_nsec/1000;
}
-
EXPORT_SYMBOL(do_gettimeofday);
+
/**
* do_settimeofday - Sets the time of day
* @tv: pointer to the timespec variable containing the new time
@@ -392,7 +391,6 @@ int do_settimeofday(const struct timespec *tv)

return 0;
}
-
EXPORT_SYMBOL(do_settimeofday);


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