Commit-ID: b5f91da0a6973bb6f9ff3b91b0e92c0773a458f3
Gitweb: http://git.kernel.org/tip/b5f91da0a6973bb6f9ff3b91b0e92c0773a458f3
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Tue, 8 Dec 2009 12:40:31 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 14 Dec 2009 23:55:34 +0100
clockevents: Convert to raw_spinlock
Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Acked-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
---
kernel/time/clockevents.c | 14 +++++++-------
kernel/time/tick-broadcast.c | 42 +++++++++++++++++++++---------------------
kernel/time/tick-common.c | 20 ++++++++++----------
3 files changed, 38 insertions(+), 38 deletions(-)
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 20a8920..3d5fc0f 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -30,7 +30,7 @@ static LIST_HEAD(clockevents_released);
static RAW_NOTIFIER_HEAD(clockevents_chain);
/* Protection for the above */
-static DEFINE_SPINLOCK(clockevents_lock);
+static DEFINE_RAW_SPINLOCK(clockevents_lock);
/**
* clockevents_delta2ns - Convert a latch value (device ticks) to nanoseconds
@@ -141,9 +141,9 @@ int clockevents_register_notifier(struct notifier_block *nb)
unsigned long flags;
int ret;
- spin_lock_irqsave(&clockevents_lock, flags);
+ raw_spin_lock_irqsave(&clockevents_lock, flags);
ret = raw_notifier_chain_register(&clockevents_chain, nb);
- spin_unlock_irqrestore(&clockevents_lock, flags);
+ raw_spin_unlock_irqrestore(&clockevents_lock, flags);
return ret;
}
@@ -185,13 +185,13 @@ void clockevents_register_device(struct clock_event_device *dev)
BUG_ON(dev->mode != CLOCK_EVT_MODE_UNUSED);
BUG_ON(!dev->cpumask);
- spin_lock_irqsave(&clockevents_lock, flags);
+ raw_spin_lock_irqsave(&clockevents_lock, flags);
list_add(&dev->list, &clockevent_devices);
clockevents_do_notify(CLOCK_EVT_NOTIFY_ADD, dev);
clockevents_notify_released();
- spin_unlock_irqrestore(&clockevents_lock, flags);
+ raw_spin_unlock_irqrestore(&clockevents_lock, flags);
}
EXPORT_SYMBOL_GPL(clockevents_register_device);
@@ -241,7 +241,7 @@ void clockevents_notify(unsigned long reason, void *arg)
struct list_head *node, *tmp;
unsigned long flags;
- spin_lock_irqsave(&clockevents_lock, flags);
+ raw_spin_lock_irqsave(&clockevents_lock, flags);
clockevents_do_notify(reason, arg);
switch (reason) {
@@ -256,7 +256,7 @@ void clockevents_notify(unsigned long reason, void *arg)
default:
break;
}
- spin_unlock_irqrestore(&clockevents_lock, flags);
+ raw_spin_unlock_irqrestore(&clockevents_lock, flags);
}
EXPORT_SYMBOL_GPL(clockevents_notify);
#endif
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index c2ec250..b3bafd5 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -31,7 +31,7 @@ static struct tick_device tick_broadcast_device;
/* FIXME: Use cpumask_var_t. */
static DECLARE_BITMAP(tick_broadcast_mask, NR_CPUS);
static DECLARE_BITMAP(tmpmask, NR_CPUS);
-static DEFINE_SPINLOCK(tick_broadcast_lock);
+static DEFINE_RAW_SPINLOCK(tick_broadcast_lock);
static int tick_broadcast_force;
#ifdef CONFIG_TICK_ONESHOT
@@ -96,7 +96,7 @@ int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu)
unsigned long flags;
int ret = 0;
- spin_lock_irqsave(&tick_broadcast_lock, flags);
+ raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
/*
* Devices might be registered with both periodic and oneshot
@@ -122,7 +122,7 @@ int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu)
tick_broadcast_clear_oneshot(cpu);
}
}
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
return ret;
}
@@ -161,13 +161,13 @@ static void tick_do_broadcast(struct cpumask *mask)
*/
static void tick_do_periodic_broadcast(void)
{
- spin_lock(&tick_broadcast_lock);
+ raw_spin_lock(&tick_broadcast_lock);
cpumask_and(to_cpumask(tmpmask),
cpu_online_mask, tick_get_broadcast_mask());
tick_do_broadcast(to_cpumask(tmpmask));
- spin_unlock(&tick_broadcast_lock);
+ raw_spin_unlock(&tick_broadcast_lock);
}
/*
@@ -212,7 +212,7 @@ static void tick_do_broadcast_on_off(unsigned long *reason)
unsigned long flags;
int cpu, bc_stopped;
- spin_lock_irqsave(&tick_broadcast_lock, flags);
+ raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
cpu = smp_processor_id();
td = &per_cpu(tick_cpu_device, cpu);
@@ -263,7 +263,7 @@ static void tick_do_broadcast_on_off(unsigned long *reason)
tick_broadcast_setup_oneshot(bc);
}
out:
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
}
/*
@@ -299,7 +299,7 @@ void tick_shutdown_broadcast(unsigned int *cpup)
unsigned long flags;
unsigned int cpu = *cpup;
- spin_lock_irqsave(&tick_broadcast_lock, flags);
+ raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
bc = tick_broadcast_device.evtdev;
cpumask_clear_cpu(cpu, tick_get_broadcast_mask());
@@ -309,7 +309,7 @@ void tick_shutdown_broadcast(unsigned int *cpup)
clockevents_shutdown(bc);
}
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
}
void tick_suspend_broadcast(void)
@@ -317,13 +317,13 @@ void tick_suspend_broadcast(void)
struct clock_event_device *bc;
unsigned long flags;
- spin_lock_irqsave(&tick_broadcast_lock, flags);
+ raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
bc = tick_broadcast_device.evtdev;
if (bc)
clockevents_shutdown(bc);
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
}
int tick_resume_broadcast(void)
@@ -332,7 +332,7 @@ int tick_resume_broadcast(void)
unsigned long flags;
int broadcast = 0;
- spin_lock_irqsave(&tick_broadcast_lock, flags);
+ raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
bc = tick_broadcast_device.evtdev;
@@ -351,7 +351,7 @@ int tick_resume_broadcast(void)
break;
}
}
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
return broadcast;
}
@@ -405,7 +405,7 @@ static void tick_handle_oneshot_broadcast(struct clock_event_device *dev)
ktime_t now, next_event;
int cpu;
- spin_lock(&tick_broadcast_lock);
+ raw_spin_lock(&tick_broadcast_lock);
again:
dev->next_event.tv64 = KTIME_MAX;
next_event.tv64 = KTIME_MAX;
@@ -443,7 +443,7 @@ again:
if (tick_broadcast_set_event(next_event, 0))
goto again;
}
- spin_unlock(&tick_broadcast_lock);
+ raw_spin_unlock(&tick_broadcast_lock);
}
/*
@@ -457,7 +457,7 @@ void tick_broadcast_oneshot_control(unsigned long reason)
unsigned long flags;
int cpu;
- spin_lock_irqsave(&tick_broadcast_lock, flags);
+ raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
/*
* Periodic mode does not care about the enter/exit of power
@@ -492,7 +492,7 @@ void tick_broadcast_oneshot_control(unsigned long reason)
}
out:
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
}
/*
@@ -563,13 +563,13 @@ void tick_broadcast_switch_to_oneshot(void)
struct clock_event_device *bc;
unsigned long flags;
- spin_lock_irqsave(&tick_broadcast_lock, flags);
+ raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
tick_broadcast_device.mode = TICKDEV_MODE_ONESHOT;
bc = tick_broadcast_device.evtdev;
if (bc)
tick_broadcast_setup_oneshot(bc);
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
}
@@ -581,7 +581,7 @@ void tick_shutdown_broadcast_oneshot(unsigned int *cpup)
unsigned long flags;
unsigned int cpu = *cpup;
- spin_lock_irqsave(&tick_broadcast_lock, flags);
+ raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
/*
* Clear the broadcast mask flag for the dead cpu, but do not
@@ -589,7 +589,7 @@ void tick_shutdown_broadcast_oneshot(unsigned int *cpup)
*/
cpumask_clear_cpu(cpu, tick_get_broadcast_oneshot_mask());
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
}
/*
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index af39cf1..b6b898d 100644
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -34,7 +34,7 @@ DEFINE_PER_CPU(struct tick_device, tick_cpu_device);
ktime_t tick_next_period;
ktime_t tick_period;
int tick_do_timer_cpu __read_mostly = TICK_DO_TIMER_BOOT;
-static DEFINE_SPINLOCK(tick_device_lock);
+static DEFINE_RAW_SPINLOCK(tick_device_lock);
/*
* Debugging: see timer_list.c
@@ -209,7 +209,7 @@ static int tick_check_new_device(struct clock_event_device *newdev)
int cpu, ret = NOTIFY_OK;
unsigned long flags;
- spin_lock_irqsave(&tick_device_lock, flags);
+ raw_spin_lock_irqsave(&tick_device_lock, flags);
cpu = smp_processor_id();
if (!cpumask_test_cpu(cpu, newdev->cpumask))
@@ -268,7 +268,7 @@ static int tick_check_new_device(struct clock_event_device *newdev)
if (newdev->features & CLOCK_EVT_FEAT_ONESHOT)
tick_oneshot_notify();
- spin_unlock_irqrestore(&tick_device_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_device_lock, flags);
return NOTIFY_STOP;
out_bc:
@@ -278,7 +278,7 @@ out_bc:
if (tick_check_broadcast_device(newdev))
ret = NOTIFY_STOP;
- spin_unlock_irqrestore(&tick_device_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_device_lock, flags);
return ret;
}
@@ -311,7 +311,7 @@ static void tick_shutdown(unsigned int *cpup)
struct clock_event_device *dev = td->evtdev;
unsigned long flags;
- spin_lock_irqsave(&tick_device_lock, flags);
+ raw_spin_lock_irqsave(&tick_device_lock, flags);
td->mode = TICKDEV_MODE_PERIODIC;
if (dev) {
/*
@@ -322,7 +322,7 @@ static void tick_shutdown(unsigned int *cpup)
clockevents_exchange_device(dev, NULL);
td->evtdev = NULL;
}
- spin_unlock_irqrestore(&tick_device_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_device_lock, flags);
}
static void tick_suspend(void)
@@ -330,9 +330,9 @@ static void tick_suspend(void)
struct tick_device *td = &__get_cpu_var(tick_cpu_device);
unsigned long flags;
- spin_lock_irqsave(&tick_device_lock, flags);
+ raw_spin_lock_irqsave(&tick_device_lock, flags);
clockevents_shutdown(td->evtdev);
- spin_unlock_irqrestore(&tick_device_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_device_lock, flags);
}
static void tick_resume(void)
@@ -341,7 +341,7 @@ static void tick_resume(void)
unsigned long flags;
int broadcast = tick_resume_broadcast();
- spin_lock_irqsave(&tick_device_lock, flags);
+ raw_spin_lock_irqsave(&tick_device_lock, flags);
clockevents_set_mode(td->evtdev, CLOCK_EVT_MODE_RESUME);
if (!broadcast) {
@@ -350,7 +350,7 @@ static void tick_resume(void)
else
tick_resume_oneshot();
}
- spin_unlock_irqrestore(&tick_device_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_device_lock, flags);
}
/*
--
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