[ARM] 4258/2: Support for dynticks in idle loop
And, wrap timer_tick() and sysdev suspend/resume in
!GENERIC_CLOCKEVENTS since clockevent layer takes care
of these.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 8afd83d..5d6e652 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -27,6 +27,7 @@
#include <linux/cpu.h>
#include <linux/elfcore.h>
#include <linux/pm.h>
+#include <linux/tick.h>
#include <asm/leds.h>
#include <asm/processor.h>
@@ -159,9 +160,11 @@
if (!idle)
idle = default_idle;
leds_event(led_idle_start);
+ tick_nohz_stop_sched_tick();
while (!need_resched())
idle();
leds_event(led_idle_end);
+ tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
schedule();
preempt_disable();
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index f61decb..d0540e4 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -327,6 +327,7 @@
}
EXPORT_SYMBOL(restore_time_delta);
+#ifndef CONFIG_GENERIC_CLOCKEVENTS
/*
* Kernel system timer support.
*/
@@ -340,8 +341,9 @@
update_process_times(user_mode(get_irq_regs()));
#endif
}
+#endif
-#ifdef CONFIG_PM
+#if defined(CONFIG_PM) && !defined(CONFIG_GENERIC_CLOCKEVENTS)
static int timer_suspend(struct sys_device *dev, pm_message_t state)
{
struct sys_timer *timer = container_of(dev, struct sys_timer, dev);