summary refs log tree commit diff
diff options
context:
space:
mode:
Diffstat
-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);
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-18 06:30:09 +0000