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authorKevin Hilman <khilman@mvista.com>2007-03-14 17:33:24 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-04-21 21:02:25 +0100
commit9e4559ddffc012a73ea0b54ed3b6a219c1483ae9 (patch)
tree7446212df749c28d85a32e29a9ce499385b16d83 /arch
parent0567a0c022d5b343370a343121f38fd89925de55 (diff)
[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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/process.c3
-rw-r--r--arch/arm/kernel/time.c4
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 8afd83d0cbd..5d6e6523598 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 @@ void cpu_idle(void)
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 f61decb89ba..d0540e4eaf5 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -327,6 +327,7 @@ void restore_time_delta(struct timespec *delta, struct timespec *rtc)
}
EXPORT_SYMBOL(restore_time_delta);
+#ifndef CONFIG_GENERIC_CLOCKEVENTS
/*
* Kernel system timer support.
*/
@@ -340,8 +341,9 @@ void timer_tick(void)
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);