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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-24 13:29:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-24 13:29:46 -0700
commitc7523a7c88db637d66841018532cb4b3ab6ab0a8 (patch)
treecec08263a493831d43e17d4daa633e2a6b09480e
parent2f78d8e249973f1eeb88315e6444e616c60177ae (diff)
parentb80fe1015be4e3c926d8eb4cc6a340fdd22a43e1 (diff)
downloadlinux-linaro-stable-c7523a7c88db637d66841018532cb4b3ab6ab0a8.tar.gz
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner. Various trivial conflict fixups in arch Kconfig due to addition of unrelated entries nearby. And one slightly more subtle one for sparc32 (new user of GENERIC_CLOCKEVENTS), fixed up as per Thomas. * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits) timekeeping: Fix a few minor newline issues. time: remove obsolete declaration ntp: Fix a stale comment and a few stray newlines. ntp: Correct TAI offset during leap second timers: Fixup the Kconfig consolidation fallout x86: Use generic time config unicore32: Use generic time config um: Use generic time config tile: Use generic time config sparc: Use: generic time config sh: Use generic time config score: Use generic time config s390: Use generic time config openrisc: Use generic time config powerpc: Use generic time config mn10300: Use generic time config mips: Use generic time config microblaze: Use generic time config m68k: Use generic time config m32r: Use generic time config ...
-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 0893f023efb8..3de74c9f9610 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 4f4c8115d79b..312450941a1a 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 3dea7231f637..f8bc2d27d148 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 79cfe2614bcc..04ec0d8fbbb5 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 1f15b88b537f..052f81a76239 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 2995035812ec..22d34d64cc81 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 15c22286ae79..321f3922728b 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 bc979f770980..b2fdfb700f50 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 ba667b60f32d..8186ec5ea151 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 ef80a6546ff2..b638d5bfa14d 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 d318c606c888..cac5b6be572a 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 ac22dc7f4cab..83460468998d 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 85aad0321397..3aa826bcbf96 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 3aa3de017159..687f9b4a2ed6 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 297bd38f7c5d..4932247d078a 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 0a947bd9c076..00b9874e2240 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 e16390c0bca8..b403c533432c 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 4b285779ac05..ba0f412920be 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 3e723aaa5e18..5e05c0b445bb 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 1ea3fd954756..2d493a3bdfe1 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 74239dd77e06..6ad6219fc47e 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 43ef890d292c..cb837c223922 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 70fd690964e4..bf87f25eb2de 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 eeb8054c7cd8..47ad5210606f 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 0b2d5f24c946..66cc380bebf0 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 ad0de0c2714e..9cc7b4392f7c 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 33a92ead4d88..179f4d6755fc 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 ccb5248474c2..81816b82860b 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 a20dc8a3c949..fd42bd452b75 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 f03fd83b170b..70b33abcc7bb 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 d66b21308f7c..6e46cacf5969 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);