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-rw-r--r--arch/alpha/Kconfig4
-rw-r--r--arch/arm/Kconfig20
-rw-r--r--arch/avr32/Kconfig6
-rw-r--r--arch/blackfin/Kconfig10
-rw-r--r--arch/c6x/Kconfig8
-rw-r--r--arch/cris/Kconfig7
-rw-r--r--arch/h8300/Kconfig.cpu2
-rw-r--r--arch/hexagon/Kconfig16
-rw-r--r--arch/ia64/Kconfig9
-rw-r--r--arch/m32r/Kconfig4
-rw-r--r--arch/m68k/Kconfig11
-rw-r--r--arch/microblaze/Kconfig9
-rw-r--r--arch/mips/Kconfig15
-rw-r--r--arch/mn10300/Kconfig8
-rw-r--r--arch/openrisc/Kconfig5
-rw-r--r--arch/powerpc/Kconfig13
-rw-r--r--arch/s390/Kconfig14
-rw-r--r--arch/score/Kconfig5
-rw-r--r--arch/sh/Kconfig14
-rw-r--r--arch/sparc/Kconfig12
-rw-r--r--arch/tile/Kconfig6
-rw-r--r--arch/um/Kconfig.common5
-rw-r--r--arch/um/Kconfig.um1
-rw-r--r--arch/unicore32/Kconfig5
-rw-r--r--arch/x86/Kconfig33
-rw-r--r--arch/x86/kernel/hpet.c66
-rw-r--r--include/linux/time.h1
-rw-r--r--init/Kconfig1
-rw-r--r--kernel/time/Kconfig58
-rw-r--r--kernel/time/ntp.c8
-rw-r--r--kernel/time/timekeeping.c4
31 files changed, 155 insertions, 225 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 0893f02..3de74c9 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -16,6 +16,7 @@ config ALPHA
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_SMP_IDLE_THREAD
+ 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,
@@ -48,9 +49,6 @@ 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 4f4c811..3124509 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -40,6 +40,8 @@ config ARM
select GENERIC_PCI_IOMAP
select HAVE_BPF_JIT
select GENERIC_SMP_IDLE_THREAD
+ 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
@@ -63,22 +65,6 @@ 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
@@ -1438,8 +1424,6 @@ 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 79cfe26..04ec0d8 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -38,6 +38,7 @@ config BLACKFIN
select IRQ_PER_CPU if SMP
select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
select GENERIC_SMP_IDLE_THREAD
+ select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS
config GENERIC_CSUM
def_bool y
@@ -642,9 +643,10 @@ 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
@@ -678,12 +680,6 @@ 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 1f15b88..052f81a 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -15,6 +15,7 @@ config C6X
select IRQ_DOMAIN
select OF
select OF_EARLY_FLATTREE
+ select GENERIC_CLOCKEVENTS
config MMU
def_bool n
@@ -31,12 +32,6 @@ 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
@@ -125,7 +120,6 @@ 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 2995035..22d34d6 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
@@ -50,6 +44,7 @@ config CRIS
select GENERIC_IRQ_SHOW
select GENERIC_IOMAP
select GENERIC_SMP_IDLE_THREAD if ETRAX_ARCH_V32
+ 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 bc979f7..b2fdfb70 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -27,6 +27,9 @@ config HEXAGON
select GENERIC_IOMAP
select GENERIC_SMP_IDLE_THREAD
select STACKTRACE_SUPPORT
+ 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.
@@ -55,9 +58,6 @@ config PCI
config EARLY_PRINTK
def_bool y
-config KTIME_SCALAR
- def_bool y
-
config MMU
def_bool y
@@ -88,15 +88,6 @@ 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
@@ -179,7 +170,6 @@ endchoice
source "mm/Kconfig"
source "kernel/Kconfig.hz"
-source "kernel/time/Kconfig"
config GENERIC_GPIO
def_bool n
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index ba667b6..8186ec5 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -37,6 +37,8 @@ config IA64
select ARCH_INIT_TASK
select ARCH_TASK_STRUCT_ALLOCATOR
select ARCH_THREAD_INFO_ALLOCATOR
+ select ARCH_CLOCKSOURCE_DATA
+ select GENERIC_TIME_VSYSCALL
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
@@ -92,10 +94,6 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
-config GENERIC_TIME_VSYSCALL
- bool
- default y
-
config HAVE_SETUP_PER_CPU_AREA
def_bool y
@@ -110,9 +108,6 @@ 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 85aad03..3aa826b 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -31,6 +31,8 @@ config MIPS
select ARCH_DISCARD_MEMBLOCK
select GENERIC_SMP_IDLE_THREAD
select BUILDTIME_EXTABLE_SORT
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_CMOS_UPDATE
menu "Machine selection"
@@ -858,14 +860,6 @@ 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
@@ -2052,9 +2046,6 @@ config CPU_HAS_SYNC
depends on !CPU_R3000
default y
-config GENERIC_CLOCKEVENTS_BROADCAST
- bool
-
#
# CPU non-features
#
@@ -2216,8 +2207,6 @@ 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 297bd38..4932247 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -18,6 +18,7 @@ config OPENRISC
select GENERIC_IOMAP
select GENERIC_CPU_DEVICES
select GENERIC_ATOMIC64
+ select GENERIC_CLOCKEVENTS
config MMU
def_bool y
@@ -47,9 +48,6 @@ config NO_IOPORT
config GENERIC_GPIO
def_bool y
-config GENERIC_CLOCKEVENTS
- def_bool y
-
config TRACE_IRQFLAGS_SUPPORT
def_bool y
@@ -109,7 +107,6 @@ 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 0a947bd..00b9874 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
@@ -141,6 +132,9 @@ config PPC
select HAVE_ARCH_JUMP_LABEL
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_CMOS_UPDATE
+ select GENERIC_TIME_VSYSCALL
+ select GENERIC_CLOCKEVENTS
config EARLY_PRINTK
bool
@@ -281,7 +275,6 @@ 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 e16390c..b403c53 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
@@ -123,6 +117,9 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_TIME_VSYSCALL
+ select GENERIC_CLOCKEVENTS
+ select KTIME_SCALAR if 32BIT
config SCHED_OMIT_FRAME_POINTER
def_bool y
@@ -135,8 +132,6 @@ menu "Base setup"
comment "Processor type and features"
-source "kernel/time/Kconfig"
-
config 64BIT
def_bool y
prompt "64 bit kernel"
@@ -147,9 +142,6 @@ 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 3e723aa..5e05c0b 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -29,6 +29,8 @@ config SUPERH
select GENERIC_ATOMIC64
select GENERIC_IRQ_SHOW
select GENERIC_SMP_IDLE_THREAD
+ 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
@@ -87,16 +89,6 @@ 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
@@ -611,8 +603,6 @@ config SH_CLK_CPG_LEGACY
!CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
!CPU_SUBTYPE_SH7269
-source "kernel/time/Kconfig"
-
endmenu
menu "CPU Frequency scaling"
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 1ea3fd9..2d493a3 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -32,12 +32,15 @@ config SPARC
select HAVE_NMI_WATCHDOG if SPARC64
select HAVE_BPF_JIT
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_CMOS_UPDATE
+ select GENERIC_CLOCKEVENTS
config SPARC32
def_bool !64BIT
select GENERIC_ATOMIC64
select CLZ_TAB
select ARCH_THREAD_INFO_ALLOCATOR
+ select ARCH_USES_GETTIMEOFFSET
config SPARC64
def_bool 64BIT
@@ -77,13 +80,6 @@ config BITS
default 32 if SPARC32
default 64 if SPARC64
-config GENERIC_CMOS_UPDATE
- bool
- default y
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
config IOMMU_HELPER
bool
default y if SPARC64
@@ -274,8 +270,6 @@ 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 74239dd..6ad6219 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -14,6 +14,7 @@ config TILE
select HAVE_SYSCALL_WRAPPERS if TILEGX
select SYS_HYPERVISOR
select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select GENERIC_CLOCKEVENTS
# FIXME: investigate whether we need/want these options.
# select HAVE_IOREMAP_PROT
@@ -47,9 +48,6 @@ 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
@@ -139,8 +137,6 @@ 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 43ef890..cb837c2 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
-
config HZ
int
default 100
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 0b2d5f2..66cc380 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -85,6 +85,13 @@ config X86
select GENERIC_SMP_IDLE_THREAD
select HAVE_ARCH_SECCOMP_FILTER
select BUILDTIME_EXTABLE_SORT
+ 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 || UPROBES)
@@ -99,23 +106,6 @@ 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 RWSEM_XCHGADD_ALGORITHM
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
@@ -261,8 +244,6 @@ 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 ccb5248..81816b8 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -390,6 +390,7 @@ 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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