Merge tag 'remove-local-timers' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm into next/cleanup

From Stephen Boyd:

Now that we have a generic arch hook for broadcast we can remove the
local timer API entirely. Doing so will reduce code in ARM core, reduce
the architecture dependencies of our timer drivers, and simplify the code
because we no longer go through an architecture layer that is essentially
a hotplug notifier.

* tag 'remove-local-timers' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm:
  ARM: smp: Remove local timer API
  clocksource: time-armada-370-xp: Divorce from local timer API
  clocksource: time-armada-370-xp: Fix sparse warning
  ARM: msm: Divorce msm_timer from local timer API
  ARM: PRIMA2: Divorce timer-marco from local timer API
  ARM: EXYNOS4: Divorce mct from local timer API
  ARM: OMAP2+: Divorce from local timer API
  ARM: smp_twd: Divorce smp_twd from local timer API
  ARM: smp: Remove duplicate dummy timer implementation

Resolved a large number of conflicts due to __cpuinit cleanups, etc.

Signed-off-by: Olof Johansson <olof@lixom.net>

15 files changed, 126 insertions, 228 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ba412e02ec0c..baf43de26a54 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -645,7 +645,7 @@ config ARCH_SHMOBILE
         select CLKDEV_LOOKUP
         select GENERIC_CLOCKEVENTS
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_CLK
         select HAVE_MACH_CLKDEV
         select HAVE_SMP
@@ -1584,16 +1584,6 @@ config ARM_PSCI
           0022A ("Power State Coordination Interface System Software on
           ARM processors").
 
-config LOCAL_TIMERS
-        bool "Use local timer interrupts"
-        depends on SMP
-        default y
-        help
-          Enable support for local timers on SMP platforms, rather then the
-          legacy IPI broadcast method.  Local timers allows the system
-          accounting to be spread across the timer interval, preventing a
-          "thundering herd" at every timer tick.
-
 # The GPIO number here must be sorted by descending number. In case of
 # a multiplatform kernel, we just want the highest value required by the
 # selected platforms.
diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h
deleted file mode 100644
index f77ffc1eb0c2..000000000000
--- a/arch/arm/include/asm/localtimer.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- *  arch/arm/include/asm/localtimer.h
- *
- *  Copyright (C) 2004-2005 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __ASM_ARM_LOCALTIMER_H
-#define __ASM_ARM_LOCALTIMER_H
-
-#include <linux/errno.h>
-
-struct clock_event_device;
-
-struct local_timer_ops {
-        int  (*setup)(struct clock_event_device *);
-        void (*stop)(struct clock_event_device *);
-};
-
-#ifdef CONFIG_LOCAL_TIMERS
-/*
- * Register a local timer driver
- */
-int local_timer_register(struct local_timer_ops *);
-#else
-static inline int local_timer_register(struct local_timer_ops *ops)
-{
-        return -ENXIO;
-}
-#endif
-
-#endif
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index c2b4f8f0be9a..3a98192a3118 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -41,7 +41,6 @@
 #include <asm/sections.h>
 #include <asm/tlbflush.h>
 #include <asm/ptrace.h>
-#include <asm/localtimer.h>
 #include <asm/smp_plat.h>
 #include <asm/virt.h>
 #include <asm/mach/arch.h>
@@ -146,8 +145,6 @@ int boot_secondary(unsigned int cpu, struct task_struct *idle)
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static void percpu_timer_stop(void);
-
 static int platform_cpu_kill(unsigned int cpu)
 {
         if (smp_ops.cpu_kill)
@@ -191,11 +188,6 @@ int __cpu_disable(void)
         migrate_irqs();
 
         /*
-         * Stop the local timer for this CPU.
-         */
-        percpu_timer_stop();
-
-        /*
          * Flush user cache and TLB mappings, and then remove this CPU
          * from the vm mask set of all processes.
          *
@@ -316,8 +308,6 @@ static void smp_store_cpu_info(unsigned int cpuid)
         store_cpu_topology(cpuid);
 }
 
-static void percpu_timer_setup(void);
-
 /*
  * This is the secondary CPU boot entry.  We're using this CPUs
  * idle thread stack, but a set of temporary page tables.
@@ -372,11 +362,6 @@ asmlinkage void secondary_start_kernel(void)
         set_cpu_online(cpu, true);
         complete(&cpu_running);
 
-        /*
-         * Setup the percpu timer for this CPU.
-         */
-        percpu_timer_setup();
-
         local_irq_enable();
         local_fiq_enable();
 
@@ -423,12 +408,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
                 max_cpus = ncores;
         if (ncores > 1 && max_cpus) {
                 /*
-                 * Enable the local timer or broadcast device for the
-                 * boot CPU, but only if we have more than one CPU.
-                 */
-                percpu_timer_setup();
-
-                /*
                  * Initialise the present map, which describes the set of CPUs
                  * actually populated at the present time. A platform should
                  * re-initialize the map in the platforms smp_prepare_cpus()
@@ -504,11 +483,6 @@ u64 smp_irq_stat_cpu(unsigned int cpu)
         return sum;
 }
 
-/*
- * Timer (local or broadcast) support
- */
-static DEFINE_PER_CPU(struct clock_event_device, percpu_clockevent);
-
 #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
 void tick_broadcast(const struct cpumask *mask)
 {
@@ -516,67 +490,6 @@ void tick_broadcast(const struct cpumask *mask)
 }
 #endif
 
-static void broadcast_timer_set_mode(enum clock_event_mode mode,
-        struct clock_event_device *evt)
-{
-}
-
-static void broadcast_timer_setup(struct clock_event_device *evt)
-{
-        evt->name       = "dummy_timer";
-        evt->features   = CLOCK_EVT_FEAT_ONESHOT |
-                          CLOCK_EVT_FEAT_PERIODIC |
-                          CLOCK_EVT_FEAT_DUMMY;
-        evt->rating     = 100;
-        evt->mult       = 1;
-        evt->set_mode   = broadcast_timer_set_mode;
-
-        clockevents_register_device(evt);
-}
-
-static struct local_timer_ops *lt_ops;
-
-#ifdef CONFIG_LOCAL_TIMERS
-int local_timer_register(struct local_timer_ops *ops)
-{
-        if (!is_smp() || !setup_max_cpus)
-                return -ENXIO;
-
-        if (lt_ops)
-                return -EBUSY;
-
-        lt_ops = ops;
-        return 0;
-}
-#endif
-
-static void percpu_timer_setup(void)
-{
-        unsigned int cpu = smp_processor_id();
-        struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu);
-
-        evt->cpumask = cpumask_of(cpu);
-
-        if (!lt_ops || lt_ops->setup(evt))
-                broadcast_timer_setup(evt);
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-/*
- * The generic clock events code purposely does not stop the local timer
- * on CPU_DEAD/CPU_DEAD_FROZEN hotplug events, so we have to do it
- * manually here.
- */
-static void percpu_timer_stop(void)
-{
-        unsigned int cpu = smp_processor_id();
-        struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu);
-
-        if (lt_ops)
-                lt_ops->stop(evt);
-}
-#endif
-
 static DEFINE_RAW_SPINLOCK(stop_lock);
 
 /*
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index 25956204ef23..2985c9f0905d 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/clk.h>
+#include <linux/cpu.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/err.h>
@@ -24,7 +25,6 @@
 
 #include <asm/smp_plat.h>
 #include <asm/smp_twd.h>
-#include <asm/localtimer.h>
 
 /* set up by the platform code */
 static void __iomem *twd_base;
@@ -33,7 +33,7 @@ static struct clk *twd_clk;
 static unsigned long twd_timer_rate;
 static DEFINE_PER_CPU(bool, percpu_setup_called);
 
-static struct clock_event_device __percpu **twd_evt;
+static struct clock_event_device __percpu *twd_evt;
 static int twd_ppi;
 
 static void twd_set_mode(enum clock_event_mode mode,
@@ -90,8 +90,10 @@ static int twd_timer_ack(void)
         return 0;
 }
 
-static void twd_timer_stop(struct clock_event_device *clk)
+static void twd_timer_stop(void)
 {
+        struct clock_event_device *clk = __this_cpu_ptr(twd_evt);
+
         twd_set_mode(CLOCK_EVT_MODE_UNUSED, clk);
         disable_percpu_irq(clk->irq);
 }
@@ -106,7 +108,7 @@ static void twd_update_frequency(void *new_rate)
 {
         twd_timer_rate = *((unsigned long *) new_rate);
 
-        clockevents_update_freq(*__this_cpu_ptr(twd_evt), twd_timer_rate);
+        clockevents_update_freq(__this_cpu_ptr(twd_evt), twd_timer_rate);
 }
 
 static int twd_rate_change(struct notifier_block *nb,
@@ -132,7 +134,7 @@ static struct notifier_block twd_clk_nb = {
 
 static int twd_clk_init(void)
 {
-        if (twd_evt && *__this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk))
+        if (twd_evt && __this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk))
                 return clk_notifier_register(twd_clk, &twd_clk_nb);
 
         return 0;
@@ -151,7 +153,7 @@ static void twd_update_frequency(void *data)
 {
         twd_timer_rate = clk_get_rate(twd_clk);
 
-        clockevents_update_freq(*__this_cpu_ptr(twd_evt), twd_timer_rate);
+        clockevents_update_freq(__this_cpu_ptr(twd_evt), twd_timer_rate);
 }
 
 static int twd_cpufreq_transition(struct notifier_block *nb,
@@ -177,7 +179,7 @@ static struct notifier_block twd_cpufreq_nb = {
 
 static int twd_cpufreq_init(void)
 {
-        if (twd_evt && *__this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk))
+        if (twd_evt && __this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk))
                 return cpufreq_register_notifier(&twd_cpufreq_nb,
                         CPUFREQ_TRANSITION_NOTIFIER);
 
@@ -228,7 +230,7 @@ static void twd_calibrate_rate(void)
 
 static irqreturn_t twd_handler(int irq, void *dev_id)
 {
-        struct clock_event_device *evt = *(struct clock_event_device **)dev_id;
+        struct clock_event_device *evt = dev_id;
 
         if (twd_timer_ack()) {
                 evt->event_handler(evt);
@@ -265,9 +267,9 @@ static void twd_get_clock(struct device_node *np)
 /*
  * Setup the local clock events for a CPU.
  */
-static int twd_timer_setup(struct clock_event_device *clk)
+static void twd_timer_setup(void)
 {
-        struct clock_event_device **this_cpu_clk;
+        struct clock_event_device *clk = __this_cpu_ptr(twd_evt);
         int cpu = smp_processor_id();
 
         /*
@@ -276,9 +278,9 @@ static int twd_timer_setup(struct clock_event_device *clk)
          */
         if (per_cpu(percpu_setup_called, cpu)) {
                 __raw_writel(0, twd_base + TWD_TIMER_CONTROL);
-                clockevents_register_device(*__this_cpu_ptr(twd_evt));
+                clockevents_register_device(clk);
                 enable_percpu_irq(clk->irq, 0);
-                return 0;
+                return;
         }
         per_cpu(percpu_setup_called, cpu) = true;
 
@@ -297,27 +299,37 @@ static int twd_timer_setup(struct clock_event_device *clk)
         clk->set_mode = twd_set_mode;
         clk->set_next_event = twd_set_next_event;
         clk->irq = twd_ppi;
-
-        this_cpu_clk = __this_cpu_ptr(twd_evt);
-        *this_cpu_clk = clk;
+        clk->cpumask = cpumask_of(cpu);
 
         clockevents_config_and_register(clk, twd_timer_rate,
                                         0xf, 0xffffffff);
         enable_percpu_irq(clk->irq, 0);
+}
 
-        return 0;
+static int twd_timer_cpu_notify(struct notifier_block *self,
+                                unsigned long action, void *hcpu)
+{
+        switch (action & ~CPU_TASKS_FROZEN) {
+        case CPU_STARTING:
+                twd_timer_setup();
+                break;
+        case CPU_DYING:
+                twd_timer_stop();
+                break;
+        }
+
+        return NOTIFY_OK;
 }
 
-static struct local_timer_ops twd_lt_ops = {
-        .setup  = twd_timer_setup,
-        .stop   = twd_timer_stop,
+static struct notifier_block twd_timer_cpu_nb = {
+        .notifier_call = twd_timer_cpu_notify,
 };
 
 static int __init twd_local_timer_common_register(struct device_node *np)
 {
         int err;
 
-        twd_evt = alloc_percpu(struct clock_event_device *);
+        twd_evt = alloc_percpu(struct clock_event_device);
         if (!twd_evt) {
                 err = -ENOMEM;
                 goto out_free;
@@ -329,12 +341,22 @@ static int __init twd_local_timer_common_register(struct device_node *np)
                 goto out_free;
         }
 
-        err = local_timer_register(&twd_lt_ops);
+        err = register_cpu_notifier(&twd_timer_cpu_nb);
         if (err)
                 goto out_irq;
 
         twd_get_clock(np);
 
+        /*
+         * Immediately configure the timer on the boot CPU, unless we need
+         * jiffies to be incrementing to calibrate the rate in which case
+         * setup the timer in late_time_init.
+         */
+        if (twd_timer_rate)
+                twd_timer_setup();
+        else
+                late_time_init = twd_timer_setup;
+
         return 0;
 
 out_irq:
diff --git a/arch/arm/mach-highbank/Kconfig b/arch/arm/mach-highbank/Kconfig
index cd9fcb1cd7ab..6acbdabf6222 100644
--- a/arch/arm/mach-highbank/Kconfig
+++ b/arch/arm/mach-highbank/Kconfig
@@ -12,7 +12,7 @@ config ARCH_HIGHBANK
         select CPU_V7
         select GENERIC_CLOCKEVENTS
         select HAVE_ARM_SCU
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_SMP
         select MAILBOX
         select PL320_MBOX
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index f54656091a9d..21fa9fa3d54e 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -793,7 +793,8 @@ config SOC_IMX6Q
         select COMMON_CLK
         select CPU_V7
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
+        select HAVE_CAN_FLEXCAN if CAN
         select HAVE_IMX_ANATOP
         select HAVE_IMX_GPC
         select HAVE_IMX_MMDC
diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 8697cfc0d0b6..a7afbacae61a 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -16,6 +16,7 @@
 
 #include <linux/clocksource.h>
 #include <linux/clockchips.h>
+#include <linux/cpu.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
@@ -26,7 +27,6 @@
 #include <linux/sched_clock.h>
 
 #include <asm/mach/time.h>
-#include <asm/localtimer.h>
 
 #include "common.h"
 
@@ -49,7 +49,7 @@ static void __iomem *sts_base;
 
 static irqreturn_t msm_timer_interrupt(int irq, void *dev_id)
 {
-        struct clock_event_device *evt = *(struct clock_event_device **)dev_id;
+        struct clock_event_device *evt = dev_id;
         /* Stop the timer tick */
         if (evt->mode == CLOCK_EVT_MODE_ONESHOT) {
                 u32 ctrl = readl_relaxed(event_base + TIMER_ENABLE);
@@ -101,18 +101,7 @@ static void msm_timer_set_mode(enum clock_event_mode mode,
         writel_relaxed(ctrl, event_base + TIMER_ENABLE);
 }
 
-static struct clock_event_device msm_clockevent = {
-        .name           = "gp_timer",
-        .features       = CLOCK_EVT_FEAT_ONESHOT,
-        .rating         = 200,
-        .set_next_event = msm_timer_set_next_event,
-        .set_mode       = msm_timer_set_mode,
-};
-
-static union {
-        struct clock_event_device *evt;
-        struct clock_event_device * __percpu *percpu_evt;
-} msm_evt;
+static struct clock_event_device __percpu *msm_evt;
 
 static void __iomem *source_base;
 
@@ -138,23 +127,34 @@ static struct clocksource msm_clocksource = {
         .flags  = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
-#ifdef CONFIG_LOCAL_TIMERS
+static int msm_timer_irq;
+static int msm_timer_has_ppi;
+
 static int msm_local_timer_setup(struct clock_event_device *evt)
 {
-        /* Use existing clock_event for cpu 0 */
-        if (!smp_processor_id())
-                return 0;
-
-        evt->irq = msm_clockevent.irq;
-        evt->name = "local_timer";
-        evt->features = msm_clockevent.features;
-        evt->rating = msm_clockevent.rating;
+        int cpu = smp_processor_id();
+        int err;
+
+        evt->irq = msm_timer_irq;
+        evt->name = "msm_timer";
+        evt->features = CLOCK_EVT_FEAT_ONESHOT;
+        evt->rating = 200;
         evt->set_mode = msm_timer_set_mode;
         evt->set_next_event = msm_timer_set_next_event;
+        evt->cpumask = cpumask_of(cpu);
+
+        clockevents_config_and_register(evt, GPT_HZ, 4, 0xffffffff);
+
+        if (msm_timer_has_ppi) {
+                enable_percpu_irq(evt->irq, IRQ_TYPE_EDGE_RISING);
+        } else {
+                err = request_irq(evt->irq, msm_timer_interrupt,
+                                IRQF_TIMER | IRQF_NOBALANCING |
+                                IRQF_TRIGGER_RISING, "gp_timer", evt);
+                if (err)
+                        pr_err("request_irq failed\n");
+        }
 
-        *__this_cpu_ptr(msm_evt.percpu_evt) = evt;
-        clockevents_config_and_register(evt, GPT_HZ, 4, 0xf0000000);
-        enable_percpu_irq(evt->irq, IRQ_TYPE_EDGE_RISING);
         return 0;
 }
 
@@ -164,11 +164,28 @@ static void msm_local_timer_stop(struct clock_event_device *evt)
         disable_percpu_irq(evt->irq);
 }
 
-static struct local_timer_ops msm_local_timer_ops = {
-        .setup  = msm_local_timer_setup,
-        .stop   = msm_local_timer_stop,
+static int msm_timer_cpu_notify(struct notifier_block *self,
+                                           unsigned long action, void *hcpu)
+{
+        /*
+         * Grab cpu pointer in each case to avoid spurious
+         * preemptible warnings
+         */
+        switch (action & ~CPU_TASKS_FROZEN) {
+        case CPU_STARTING:
+                msm_local_timer_setup(this_cpu_ptr(msm_evt));
+                break;
+        case CPU_DYING:
+                msm_local_timer_stop(this_cpu_ptr(msm_evt));
+                break;
+        }
+
+        return NOTIFY_OK;
+}
+
+static struct notifier_block msm_timer_cpu_nb = {
+        .notifier_call = msm_timer_cpu_notify,
 };
-#endif /* CONFIG_LOCAL_TIMERS */
 
 static notrace u32 msm_sched_clock_read(void)
 {
@@ -178,38 +195,35 @@ static notrace u32 msm_sched_clock_read(void)
 static void __init msm_timer_init(u32 dgt_hz, int sched_bits, int irq,
                                   bool percpu)
 {
-        struct clock_event_device *ce = &msm_clockevent;
         struct clocksource *cs = &msm_clocksource;
-        int res;
+        int res = 0;
+
+        msm_timer_irq = irq;
+        msm_timer_has_ppi = percpu;
+
+        msm_evt = alloc_percpu(struct clock_event_device);
+        if (!msm_evt) {
+                pr_err("memory allocation failed for clockevents\n");
+                goto err;
+        }
 
-        ce->cpumask = cpumask_of(0);
-        ce->irq = irq;
+        if (percpu)
+                res = request_percpu_irq(irq, msm_timer_interrupt,
+                                         "gp_timer", msm_evt);
 
-        clockevents_config_and_register(ce, GPT_HZ, 4, 0xffffffff);
-        if (percpu) {
-                msm_evt.percpu_evt = alloc_percpu(struct clock_event_device *);
-                if (!msm_evt.percpu_evt) {
-                        pr_err("memory allocation failed for %s\n", ce->name);
+        if (res) {
+                pr_err("request_percpu_irq failed\n");
+        } else {
+                res = register_cpu_notifier(&msm_timer_cpu_nb);
+                if (res) {
+                        free_percpu_irq(irq, msm_evt);
                         goto err;
                 }
-                *__this_cpu_ptr(msm_evt.percpu_evt) = ce;
-                res = request_percpu_irq(ce->irq, msm_timer_interrupt,
-                                         ce->name, msm_evt.percpu_evt);
-                if (!res) {
-                        enable_percpu_irq(ce->irq, IRQ_TYPE_EDGE_RISING);
-#ifdef CONFIG_LOCAL_TIMERS
-                        local_timer_register(&msm_local_timer_ops);
-#endif
-                }
-        } else {
-                msm_evt.evt = ce;
-                res = request_irq(ce->irq, msm_timer_interrupt,
-                                  IRQF_TIMER | IRQF_NOBALANCING |
-                                  IRQF_TRIGGER_RISING, ce->name, &msm_evt.evt);
+
+                /* Immediately configure the timer on the boot CPU */
+                msm_local_timer_setup(__this_cpu_ptr(msm_evt));
         }
 
-        if (res)
-                pr_err("request_irq failed for %s\n", ce->name);
 err:
         writel_relaxed(TIMER_ENABLE_EN, source_base + TIMER_ENABLE);
         res = clocksource_register_hz(cs, dgt_hz);
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 627fa7e41fba..3d6ee149d3d7 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -37,9 +37,8 @@ config ARCH_OMAP4
         select CACHE_L2X0
         select CPU_V7
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_SMP
-        select LOCAL_TIMERS if SMP
         select OMAP_INTERCONNECT
         select PL310_ERRATA_588369
         select PL310_ERRATA_727915
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index b37e1fcbad56..8e99ca368e07 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -600,7 +600,6 @@ static OMAP_SYS_32K_TIMER_INIT(4, 1, "timer_32k_ck", "ti,timer-alwon",
 #endif
 
 #ifdef CONFIG_ARCH_OMAP4
-#ifdef CONFIG_LOCAL_TIMERS
 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, OMAP44XX_LOCAL_TWD_BASE, 29);
 void __init omap4_local_timer_init(void)
 {
@@ -619,12 +618,6 @@ void __init omap4_local_timer_init(void)
                         pr_err("twd_local_timer_register failed %d\n", err);
         }
 }
-#else /* CONFIG_LOCAL_TIMERS */
-void __init omap4_local_timer_init(void)
-{
-        omap4_sync32k_timer_init();
-}
-#endif /* CONFIG_LOCAL_TIMERS */
 #endif /* CONFIG_ARCH_OMAP4 */
 
 #ifdef CONFIG_SOC_OMAP5
diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig
index d210c0f9c2c4..9db2029aa632 100644
--- a/arch/arm/mach-realview/Kconfig
+++ b/arch/arm/mach-realview/Kconfig
@@ -13,7 +13,7 @@ config REALVIEW_EB_A9MP
         depends on MACH_REALVIEW_EB
         select CPU_V7
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_SMP
         select MIGHT_HAVE_CACHE_L2X0
         help
@@ -26,7 +26,7 @@ config REALVIEW_EB_ARM11MP
         select ARCH_HAS_BARRIERS if SMP
         select CPU_V6K
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_SMP
         select MIGHT_HAVE_CACHE_L2X0
         help
@@ -48,7 +48,7 @@ config MACH_REALVIEW_PB11MP
         select ARM_GIC
         select CPU_V6K
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_PATA_PLATFORM
         select HAVE_SMP
         select MIGHT_HAVE_CACHE_L2X0
@@ -92,7 +92,7 @@ config MACH_REALVIEW_PBX
         select ARCH_SPARSEMEM_ENABLE if CPU_V7 && !REALVIEW_HIGH_PHYS_OFFSET
         select ARM_GIC
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_PATA_PLATFORM
         select HAVE_SMP
         select MIGHT_HAVE_CACHE_L2X0
diff --git a/arch/arm/mach-spear/Kconfig b/arch/arm/mach-spear/Kconfig
index 442917eedff3..df0d59afeb40 100644
--- a/arch/arm/mach-spear/Kconfig
+++ b/arch/arm/mach-spear/Kconfig
@@ -23,7 +23,7 @@ config ARCH_SPEAR13XX
         select CPU_V7
         select GPIO_SPEAR_SPICS
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_SMP
         select MIGHT_HAVE_CACHE_L2X0
         select PINCTRL
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index ef3a8da49b2d..59925cc896fb 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -8,7 +8,7 @@ config ARCH_TEGRA
         select COMMON_CLK
         select GENERIC_CLOCKEVENTS
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_CLK
         select HAVE_SMP
         select MIGHT_HAVE_CACHE_L2X0
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index b19b07204aaf..99a28d628297 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig
@@ -8,7 +8,7 @@ config ARCH_U8500
         select CPU_V7
         select GENERIC_CLOCKEVENTS
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_SMP
         select MIGHT_HAVE_CACHE_L2X0
         help
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
index b8bbabec6310..83c8677bb181 100644
--- a/arch/arm/mach-vexpress/Kconfig
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -10,7 +10,7 @@ config ARCH_VEXPRESS
         select CPU_V7
         select GENERIC_CLOCKEVENTS
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select HAVE_CLK
         select HAVE_PATA_PLATFORM
         select HAVE_SMP
diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig
index c1d61f281e68..04f8a4a6e755 100644
--- a/arch/arm/mach-zynq/Kconfig
+++ b/arch/arm/mach-zynq/Kconfig
@@ -6,7 +6,7 @@ config ARCH_ZYNQ
         select CPU_V7
         select GENERIC_CLOCKEVENTS
         select HAVE_ARM_SCU if SMP
-        select HAVE_ARM_TWD if LOCAL_TIMERS
+        select HAVE_ARM_TWD if SMP
         select ICST
         select MIGHT_HAVE_CACHE_L2X0
         select USE_OF