clockevents: Convert to raw_spinlock
Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
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 @@
/* 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 @@
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 @@
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_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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
break;
}
}
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
return broadcast;
}
@@ -405,7 +405,7 @@
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 @@
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 @@
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 @@
}
out:
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
}
/*
@@ -563,13 +563,13 @@
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 @@
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 @@
*/
cpumask_clear_cpu(cpu, tick_get_broadcast_oneshot_mask());
- spin_unlock_irqrestore(&tick_broadcast_lock, flags);
+ raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags);
}
/*