[ARM] dyntick: Remove obsolete and unused ARM dyntick support

dyntick is superseded by the clocksource/clockevent infrastructure,
using the NO_HZ configuration option.  No one implements dyntick on
ARM anymore, so it's pointless keeping it around.  Remove dyntick
support.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

43 files changed, 1 insertions, 196 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b786e68914d..167824e24ed 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -703,27 +703,6 @@ config PREEMPT
 	  Say Y here if you are building a kernel for a desktop, embedded
 	  or real-time system.  Say N if you are unsure.
 
-config NO_IDLE_HZ
-	bool "Dynamic tick timer"
-	depends on !GENERIC_CLOCKEVENTS
-	help
-	  Select this option if you want to disable continuous timer ticks
-	  and have them programmed to occur as required. This option saves
-	  power as the system can remain in idle state for longer.
-
-	  By default dynamic tick is disabled during the boot, and can be
-	  manually enabled with:
-
-	    echo 1 > /sys/devices/system/timer/timer0/dyn_tick
-
-	  Alternatively, if you want dynamic tick automatically enabled
-	  during boot, pass "dyntick=enable" via the kernel command string.
-
-	  Please note that dynamic tick may affect the accuracy of
-	  timekeeping on some platforms depending on the implementation.
-	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
-	  to have accurate timekeeping with dynamic tick.
-
 config HZ
 	int
 	default 128 if ARCH_L7200
diff --git a/arch/arm/configs/at91cap9adk_defconfig b/arch/arm/configs/at91cap9adk_defconfig
index e32e7364812..b8e73e95598 100644
--- a/arch/arm/configs/at91cap9adk_defconfig
+++ b/arch/arm/configs/at91cap9adk_defconfig
@@ -213,7 +213,6 @@ CONFIG_CPU_CP15_MMU=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 CONFIG_AEABI=y
 CONFIG_OABI_COMPAT=y
diff --git a/arch/arm/configs/at91rm9200dk_defconfig b/arch/arm/configs/at91rm9200dk_defconfig
index 2dbbbc3d4ac..868fb7b9530 100644
--- a/arch/arm/configs/at91rm9200dk_defconfig
+++ b/arch/arm/configs/at91rm9200dk_defconfig
@@ -169,7 +169,6 @@ CONFIG_AT91_CF=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
diff --git a/arch/arm/configs/at91rm9200ek_defconfig b/arch/arm/configs/at91rm9200ek_defconfig
index 6e994f7820c..de43fc67561 100644
--- a/arch/arm/configs/at91rm9200ek_defconfig
+++ b/arch/arm/configs/at91rm9200ek_defconfig
@@ -160,7 +160,6 @@ CONFIG_ISA_DMA_API=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
diff --git a/arch/arm/configs/at91sam9260ek_defconfig b/arch/arm/configs/at91sam9260ek_defconfig
index f659c938473..2011adfa675 100644
--- a/arch/arm/configs/at91sam9260ek_defconfig
+++ b/arch/arm/configs/at91sam9260ek_defconfig
@@ -220,7 +220,6 @@ CONFIG_CPU_CP15_MMU=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/at91sam9261ek_defconfig b/arch/arm/configs/at91sam9261ek_defconfig
index 3802e85f748..4049768962d 100644
--- a/arch/arm/configs/at91sam9261ek_defconfig
+++ b/arch/arm/configs/at91sam9261ek_defconfig
@@ -213,7 +213,6 @@ CONFIG_CPU_CP15_MMU=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/at91sam9263ek_defconfig b/arch/arm/configs/at91sam9263ek_defconfig
index 32a0d74e0c8..fa1c5aecb5a 100644
--- a/arch/arm/configs/at91sam9263ek_defconfig
+++ b/arch/arm/configs/at91sam9263ek_defconfig
@@ -213,7 +213,6 @@ CONFIG_CPU_CP15_MMU=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/at91sam9rlek_defconfig b/arch/arm/configs/at91sam9rlek_defconfig
index 98e6746d02b..d8ec5f9ca6e 100644
--- a/arch/arm/configs/at91sam9rlek_defconfig
+++ b/arch/arm/configs/at91sam9rlek_defconfig
@@ -211,7 +211,6 @@ CONFIG_CPU_CP15_MMU=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/ateb9200_defconfig b/arch/arm/configs/ateb9200_defconfig
index d846a492e5c..85c80f723d8 100644
--- a/arch/arm/configs/ateb9200_defconfig
+++ b/arch/arm/configs/ateb9200_defconfig
@@ -171,7 +171,6 @@ CONFIG_AT91_CF=m
 # Kernel Features
 #
 CONFIG_PREEMPT=y
-CONFIG_NO_IDLE_HZ=y
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/cm_x270_defconfig b/arch/arm/configs/cm_x270_defconfig
index 5cab08397ae..33b201c3b30 100644
--- a/arch/arm/configs/cm_x270_defconfig
+++ b/arch/arm/configs/cm_x270_defconfig
@@ -194,7 +194,6 @@ CONFIG_PCI_HOST_ITE8152=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/collie_defconfig b/arch/arm/configs/collie_defconfig
index 4264e273202..f7622e65816 100644
--- a/arch/arm/configs/collie_defconfig
+++ b/arch/arm/configs/collie_defconfig
@@ -166,7 +166,6 @@ CONFIG_PCMCIA_SA1100=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
diff --git a/arch/arm/configs/corgi_defconfig b/arch/arm/configs/corgi_defconfig
index e8980a9bb89..9b8748a8d9d 100644
--- a/arch/arm/configs/corgi_defconfig
+++ b/arch/arm/configs/corgi_defconfig
@@ -165,7 +165,6 @@ CONFIG_PCMCIA_PXA2XX=y
 # Kernel Features
 #
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
diff --git a/arch/arm/configs/ecbat91_defconfig b/arch/arm/configs/ecbat91_defconfig
index 90ed214e367..cfeb817ad21 100644
--- a/arch/arm/configs/ecbat91_defconfig
+++ b/arch/arm/configs/ecbat91_defconfig
@@ -230,7 +230,6 @@ CONFIG_AT91_CF=y
 #
 # CONFIG_TICK_ONESHOT is not set
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/em_x270_defconfig b/arch/arm/configs/em_x270_defconfig
index 6bea0901bdf..d3114c23603 100644
--- a/arch/arm/configs/em_x270_defconfig
+++ b/arch/arm/configs/em_x270_defconfig
@@ -197,7 +197,6 @@ CONFIG_XSCALE_PMU=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 CONFIG_AEABI=y
 CONFIG_OABI_COMPAT=y
diff --git a/arch/arm/configs/ep93xx_defconfig b/arch/arm/configs/ep93xx_defconfig
index 24a701ab33e..21aa013793c 100644
--- a/arch/arm/configs/ep93xx_defconfig
+++ b/arch/arm/configs/ep93xx_defconfig
@@ -184,7 +184,6 @@ CONFIG_ARM_AMBA=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/eseries_pxa_defconfig b/arch/arm/configs/eseries_pxa_defconfig
index ed487b90dbe..493ecee24f9 100644
--- a/arch/arm/configs/eseries_pxa_defconfig
+++ b/arch/arm/configs/eseries_pxa_defconfig
@@ -251,7 +251,6 @@ CONFIG_PCMCIA_PXA2XX=m
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 CONFIG_AEABI=y
 CONFIG_OABI_COMPAT=y
diff --git a/arch/arm/configs/iop13xx_defconfig b/arch/arm/configs/iop13xx_defconfig
index 988b4d13e76..482e5706105 100644
--- a/arch/arm/configs/iop13xx_defconfig
+++ b/arch/arm/configs/iop13xx_defconfig
@@ -197,7 +197,6 @@ CONFIG_PCI_LEGACY=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/iop32x_defconfig b/arch/arm/configs/iop32x_defconfig
index 83f40d4041a..8612f58e105 100644
--- a/arch/arm/configs/iop32x_defconfig
+++ b/arch/arm/configs/iop32x_defconfig
@@ -201,7 +201,6 @@ CONFIG_PCI_LEGACY=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/iop33x_defconfig b/arch/arm/configs/iop33x_defconfig
index 917afb5ccfa..8b0098d19d0 100644
--- a/arch/arm/configs/iop33x_defconfig
+++ b/arch/arm/configs/iop33x_defconfig
@@ -197,7 +197,6 @@ CONFIG_PCI_LEGACY=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/ixp2000_defconfig b/arch/arm/configs/ixp2000_defconfig
index f8f9793b526..84680db6c61 100644
--- a/arch/arm/configs/ixp2000_defconfig
+++ b/arch/arm/configs/ixp2000_defconfig
@@ -184,7 +184,6 @@ CONFIG_PCI=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/ixp23xx_defconfig b/arch/arm/configs/ixp23xx_defconfig
index 27cf022dd80..4a2f7b2372d 100644
--- a/arch/arm/configs/ixp23xx_defconfig
+++ b/arch/arm/configs/ixp23xx_defconfig
@@ -180,7 +180,6 @@ CONFIG_PCI=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/kafa_defconfig b/arch/arm/configs/kafa_defconfig
index ae51a40db6f..6dd95a2c8d5 100644
--- a/arch/arm/configs/kafa_defconfig
+++ b/arch/arm/configs/kafa_defconfig
@@ -162,7 +162,6 @@ CONFIG_CPU_TLB_V4WBI=y
 # Kernel Features
 #
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/kb9202_defconfig b/arch/arm/configs/kb9202_defconfig
index c16537d9d67..8e74c66f239 100644
--- a/arch/arm/configs/kb9202_defconfig
+++ b/arch/arm/configs/kb9202_defconfig
@@ -126,7 +126,6 @@ CONFIG_ISA_DMA_API=y
 #
 # Kernel Features
 #
-# CONFIG_NO_IDLE_HZ is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
 CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
diff --git a/arch/arm/configs/ks8695_defconfig b/arch/arm/configs/ks8695_defconfig
index 8ab21a0719e..6077f2cb88e 100644
--- a/arch/arm/configs/ks8695_defconfig
+++ b/arch/arm/configs/ks8695_defconfig
@@ -174,7 +174,6 @@ CONFIG_PCCARD_NONSTATIC=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/lpd270_defconfig b/arch/arm/configs/lpd270_defconfig
index a3bf5833b87..1a38d8e3fe6 100644
--- a/arch/arm/configs/lpd270_defconfig
+++ b/arch/arm/configs/lpd270_defconfig
@@ -173,7 +173,6 @@ CONFIG_XSCALE_PMU=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/lpd7a404_defconfig b/arch/arm/configs/lpd7a404_defconfig
index 46a0f7fe1fa..7a2e932da1c 100644
--- a/arch/arm/configs/lpd7a404_defconfig
+++ b/arch/arm/configs/lpd7a404_defconfig
@@ -148,7 +148,6 @@ CONFIG_ARM_AMBA=y
 # Kernel Features
 #
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 # CONFIG_AEABI is not set
 CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
 CONFIG_SELECT_MEMORY_MODEL=y
diff --git a/arch/arm/configs/netx_defconfig b/arch/arm/configs/netx_defconfig
index 57f32f39d0f..0884f2370c3 100644
--- a/arch/arm/configs/netx_defconfig
+++ b/arch/arm/configs/netx_defconfig
@@ -154,7 +154,6 @@ CONFIG_ARM_AMBA=y
 # Kernel Features
 #
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/onearm_defconfig b/arch/arm/configs/onearm_defconfig
index 650a248613e..418ca2febbe 100644
--- a/arch/arm/configs/onearm_defconfig
+++ b/arch/arm/configs/onearm_defconfig
@@ -202,7 +202,6 @@ CONFIG_AT91_CF=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/picotux200_defconfig b/arch/arm/configs/picotux200_defconfig
index 95a22f51280..14826f0dabd 100644
--- a/arch/arm/configs/picotux200_defconfig
+++ b/arch/arm/configs/picotux200_defconfig
@@ -201,7 +201,6 @@ CONFIG_ARM_THUMB=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-CONFIG_NO_IDLE_HZ=y
 CONFIG_HZ=100
 CONFIG_AEABI=y
 CONFIG_OABI_COMPAT=y
diff --git a/arch/arm/configs/pnx4008_defconfig b/arch/arm/configs/pnx4008_defconfig
index b5e11aa2e29..811b8f60d19 100644
--- a/arch/arm/configs/pnx4008_defconfig
+++ b/arch/arm/configs/pnx4008_defconfig
@@ -151,7 +151,6 @@ CONFIG_ARM_THUMB=y
 # Kernel Features
 #
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/realview-smp_defconfig b/arch/arm/configs/realview-smp_defconfig
index fc39ba1a89f..0c09b23167e 100644
--- a/arch/arm/configs/realview-smp_defconfig
+++ b/arch/arm/configs/realview-smp_defconfig
@@ -177,7 +177,6 @@ CONFIG_NR_CPUS=4
 CONFIG_HOTPLUG_CPU=y
 CONFIG_LOCAL_TIMERS=y
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/realview_defconfig b/arch/arm/configs/realview_defconfig
index accbf529ce5..907e54344da 100644
--- a/arch/arm/configs/realview_defconfig
+++ b/arch/arm/configs/realview_defconfig
@@ -126,7 +126,6 @@ CONFIG_ISA_DMA_API=y
 #
 # Kernel Features
 #
-# CONFIG_NO_IDLE_HZ is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
 CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
diff --git a/arch/arm/configs/rpc_defconfig b/arch/arm/configs/rpc_defconfig
index 5ddecb9ddf0..f62d1817d2c 100644
--- a/arch/arm/configs/rpc_defconfig
+++ b/arch/arm/configs/rpc_defconfig
@@ -190,7 +190,6 @@ CONFIG_ISA_DMA_API=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/s3c2410_defconfig b/arch/arm/configs/s3c2410_defconfig
index f8a1645b3d4..6d03763773b 100644
--- a/arch/arm/configs/s3c2410_defconfig
+++ b/arch/arm/configs/s3c2410_defconfig
@@ -246,7 +246,6 @@ CONFIG_ISA=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=200
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/sam9_l9260_defconfig b/arch/arm/configs/sam9_l9260_defconfig
index 484dc9739df..8688362bcf7 100644
--- a/arch/arm/configs/sam9_l9260_defconfig
+++ b/arch/arm/configs/sam9_l9260_defconfig
@@ -211,7 +211,6 @@ CONFIG_ARM_THUMB=y
 #
 # CONFIG_TICK_ONESHOT is not set
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/spitz_defconfig b/arch/arm/configs/spitz_defconfig
index aa7a0117950..7d59fb1f1ce 100644
--- a/arch/arm/configs/spitz_defconfig
+++ b/arch/arm/configs/spitz_defconfig
@@ -164,7 +164,6 @@ CONFIG_PCMCIA_PXA2XX=y
 # Kernel Features
 #
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
diff --git a/arch/arm/configs/tct_hammer_defconfig b/arch/arm/configs/tct_hammer_defconfig
index 576b8339f0d..07dfb98df4f 100644
--- a/arch/arm/configs/tct_hammer_defconfig
+++ b/arch/arm/configs/tct_hammer_defconfig
@@ -247,7 +247,6 @@ CONFIG_ARM_THUMB=y
 #
 # CONFIG_TICK_ONESHOT is not set
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=200
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/configs/trizeps4_defconfig b/arch/arm/configs/trizeps4_defconfig
index 6db6392806f..8b7a431a8bf 100644
--- a/arch/arm/configs/trizeps4_defconfig
+++ b/arch/arm/configs/trizeps4_defconfig
@@ -195,7 +195,6 @@ CONFIG_PCMCIA_PXA2XX=y
 # Kernel Features
 #
 CONFIG_PREEMPT=y
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 CONFIG_AEABI=y
 CONFIG_OABI_COMPAT=y
diff --git a/arch/arm/configs/versatile_defconfig b/arch/arm/configs/versatile_defconfig
index 48dca69adda..8355f88f729 100644
--- a/arch/arm/configs/versatile_defconfig
+++ b/arch/arm/configs/versatile_defconfig
@@ -151,7 +151,6 @@ CONFIG_ARM_AMBA=y
 # Kernel Features
 #
 # CONFIG_PREEMPT is not set
-# CONFIG_NO_IDLE_HZ is not set
 CONFIG_HZ=100
 # CONFIG_AEABI is not set
 # CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 46bf2ede612..199b3680118 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -133,10 +133,8 @@ static void default_idle(void)
 		cpu_relax();
 	else {
 		local_irq_disable();
-		if (!need_resched()) {
-			timer_dyn_reprogram();
+		if (!need_resched())
 			arch_idle();
-		}
 		local_irq_enable();
 	}
 }
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index b5867eca1d0..cc5145b28e7 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -365,108 +365,6 @@ static struct sysdev_class timer_sysclass = {
 	.resume		= timer_resume,
 };
 
-#ifdef CONFIG_NO_IDLE_HZ
-static int timer_dyn_tick_enable(void)
-{
-	struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick;
-	unsigned long flags;
-	int ret = -ENODEV;
-
-	if (dyn_tick) {
-		spin_lock_irqsave(&dyn_tick->lock, flags);
-		ret = 0;
-		if (!(dyn_tick->state & DYN_TICK_ENABLED)) {
-			ret = dyn_tick->enable();
-
-			if (ret == 0)
-				dyn_tick->state |= DYN_TICK_ENABLED;
-		}
-		spin_unlock_irqrestore(&dyn_tick->lock, flags);
-	}
-
-	return ret;
-}
-
-static int timer_dyn_tick_disable(void)
-{
-	struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick;
-	unsigned long flags;
-	int ret = -ENODEV;
-
-	if (dyn_tick) {
-		spin_lock_irqsave(&dyn_tick->lock, flags);
-		ret = 0;
-		if (dyn_tick->state & DYN_TICK_ENABLED) {
-			ret = dyn_tick->disable();
-
-			if (ret == 0)
-				dyn_tick->state &= ~DYN_TICK_ENABLED;
-		}
-		spin_unlock_irqrestore(&dyn_tick->lock, flags);
-	}
-
-	return ret;
-}
-
-/*
- * Reprogram the system timer for at least the calculated time interval.
- * This function should be called from the idle thread with IRQs disabled,
- * immediately before sleeping.
- */
-void timer_dyn_reprogram(void)
-{
-	struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick;
-	unsigned long next, seq, flags;
-
-	if (!dyn_tick)
-		return;
-
-	spin_lock_irqsave(&dyn_tick->lock, flags);
-	if (dyn_tick->state & DYN_TICK_ENABLED) {
-		next = next_timer_interrupt();
-		do {
-			seq = read_seqbegin(&xtime_lock);
-			dyn_tick->reprogram(next - jiffies);
-		} while (read_seqretry(&xtime_lock, seq));
-	}
-	spin_unlock_irqrestore(&dyn_tick->lock, flags);
-}
-
-static ssize_t timer_show_dyn_tick(struct sys_device *dev, char *buf)
-{
-	return sprintf(buf, "%i\n",
-		       (system_timer->dyn_tick->state & DYN_TICK_ENABLED) >> 1);
-}
-
-static ssize_t timer_set_dyn_tick(struct sys_device *dev, const char *buf,
-				  size_t count)
-{
-	unsigned int enable = simple_strtoul(buf, NULL, 2);
-
-	if (enable)
-		timer_dyn_tick_enable();
-	else
-		timer_dyn_tick_disable();
-
-	return count;
-}
-static SYSDEV_ATTR(dyn_tick, 0644, timer_show_dyn_tick, timer_set_dyn_tick);
-
-/*
- * dyntick=enable|disable
- */
-static char dyntick_str[4] __initdata = "";
-
-static int __init dyntick_setup(char *str)
-{
-	if (str)
-		strlcpy(dyntick_str, str, sizeof(dyntick_str));
-	return 1;
-}
-
-__setup("dyntick=", dyntick_setup);
-#endif
-
 static int __init timer_init_sysfs(void)
 {
 	int ret = sysdev_class_register(&timer_sysclass);
@@ -475,19 +373,6 @@ static int __init timer_init_sysfs(void)
 		ret = sysdev_register(&system_timer->dev);
 	}
 
-#ifdef CONFIG_NO_IDLE_HZ
-	if (ret == 0 && system_timer->dyn_tick) {
-		ret = sysdev_create_file(&system_timer->dev, &attr_dyn_tick);
-
-		/*
-		 * Turn on dynamic tick after calibrate delay
-		 * for correct bogomips
-		 */
-		if (ret == 0 && dyntick_str[0] == 'e')
-			ret = timer_dyn_tick_enable();
-	}
-#endif
-
 	return ret;
 }
 
@@ -500,10 +385,5 @@ void __init time_init(void)
 		system_timer->offset = dummy_gettimeoffset;
 #endif
 	system_timer->init();
-
-#ifdef CONFIG_NO_IDLE_HZ
-	if (system_timer->dyn_tick)
-		spin_lock_init(&system_timer->dyn_tick->lock);
-#endif
 }
 
diff --git a/arch/arm/mach-omap1/pm.c b/arch/arm/mach-omap1/pm.c
index e6c64e10b7e..742f79e73bd 100644
--- a/arch/arm/mach-omap1/pm.c
+++ b/arch/arm/mach-omap1/pm.c
@@ -116,13 +116,6 @@ void omap_pm_idle(void)
 		return;
 	}
 
-	/*
-	 * Since an interrupt may set up a timer, we don't want to
-	 * reprogram the hardware timer with interrupts enabled.
-	 * Re-enable interrupts only after returning from idle.
-	 */
-	timer_dyn_reprogram();
-
 #ifdef CONFIG_OMAP_MPU_TIMER
 #warning Enable 32kHz OS timer in order to allow sleep states in idle
 	use_idlect1 = use_idlect1 & ~(1 << 9);
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index aad781dcf1b..d6c9de82ca0 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -57,13 +57,6 @@ void omap2_pm_idle(void)
 		return;
 	}
 
-	/*
-	 * Since an interrupt may set up a timer, we don't want to
-	 * reprogram the hardware timer with interrupts enabled.
-	 * Re-enable interrupts only after returning from idle.
-	 */
-	timer_dyn_reprogram();
-
 	omap2_sram_idle();
 	local_fiq_enable();
 	local_irq_enable();