[ARM] smp: move core localtimer support out of platform specific files
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 6014dfd..91130e2 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -22,6 +22,8 @@
#include <linux/smp.h>
#include <linux/seq_file.h>
#include <linux/irq.h>
+#include <linux/percpu.h>
+#include <linux/clockchips.h>
#include <asm/atomic.h>
#include <asm/cacheflush.h>
@@ -32,6 +34,7 @@
#include <asm/processor.h>
#include <asm/tlbflush.h>
#include <asm/ptrace.h>
+#include <asm/localtimer.h>
/*
* as from 2.5, kernels no longer have an init_tasks structure
@@ -274,9 +277,9 @@
local_fiq_enable();
/*
- * Setup local timer for this CPU.
+ * Setup the percpu timer for this CPU.
*/
- local_timer_setup();
+ percpu_timer_setup();
calibrate_delay();
@@ -383,10 +386,16 @@
seq_putc(p, '\n');
}
+/*
+ * Timer (local or broadcast) support
+ */
+static DEFINE_PER_CPU(struct clock_event_device, percpu_clockevent);
+
static void ipi_timer(void)
{
+ struct clock_event_device *evt = &__get_cpu_var(percpu_clockevent);
irq_enter();
- local_timer_interrupt();
+ evt->event_handler(evt);
irq_exit();
}
@@ -405,6 +414,42 @@
}
#endif
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+static void smp_timer_broadcast(const struct cpumask *mask)
+{
+ send_ipi_message(mask, IPI_TIMER);
+}
+
+static void broadcast_timer_set_mode(enum clock_event_mode mode,
+ struct clock_event_device *evt)
+{
+}
+
+static void local_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 = 400;
+ evt->mult = 1;
+ evt->set_mode = broadcast_timer_set_mode;
+ evt->broadcast = smp_timer_broadcast;
+
+ clockevents_register_device(evt);
+}
+#endif
+
+void __cpuinit 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);
+
+ local_timer_setup(evt);
+}
+
static DEFINE_SPINLOCK(stop_lock);
/*
@@ -501,11 +546,6 @@
send_ipi_message(cpumask_of(cpu), IPI_RESCHEDULE);
}
-void smp_timer_broadcast(const struct cpumask *mask)
-{
- send_ipi_message(mask, IPI_TIMER);
-}
-
void smp_send_stop(void)
{
cpumask_t mask = cpu_online_map;