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genirq: Convert irq_desc.lock to raw_spinlock

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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>
This commit is contained in:
Thomas Gleixner
2009-11-17 16:46:45 +01:00
parent 9f5a5621e7
commit 239007b844
43 changed files with 240 additions and 240 deletions
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14
kernel/irq/spurious.c
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@@ -28,7 +28,7 @@ static int try_one_irq(int irq, struct irq_desc *desc)
struct irqaction *action;
int ok = 0, work = 0;
spin_lock(&desc->lock);
raw_spin_lock(&desc->lock);
/* Already running on another processor */
if (desc->status & IRQ_INPROGRESS) {
/*
@@ -37,13 +37,13 @@ static int try_one_irq(int irq, struct irq_desc *desc)
*/
if (desc->action && (desc->action->flags & IRQF_SHARED))
desc->status |= IRQ_PENDING;
spin_unlock(&desc->lock);
raw_spin_unlock(&desc->lock);
return ok;
}
/* Honour the normal IRQ locking */
desc->status |= IRQ_INPROGRESS;
action = desc->action;
spin_unlock(&desc->lock);
raw_spin_unlock(&desc->lock);
while (action) {
/* Only shared IRQ handlers are safe to call */
@@ -56,7 +56,7 @@ static int try_one_irq(int irq, struct irq_desc *desc)
}
local_irq_disable();
/* Now clean up the flags */
spin_lock(&desc->lock);
raw_spin_lock(&desc->lock);
action = desc->action;
/*
@@ -68,9 +68,9 @@ static int try_one_irq(int irq, struct irq_desc *desc)
* Perform real IRQ processing for the IRQ we deferred
*/
work = 1;
spin_unlock(&desc->lock);
raw_spin_unlock(&desc->lock);
handle_IRQ_event(irq, action);
spin_lock(&desc->lock);
raw_spin_lock(&desc->lock);
desc->status &= ~IRQ_PENDING;
}
desc->status &= ~IRQ_INPROGRESS;
@@ -80,7 +80,7 @@ static int try_one_irq(int irq, struct irq_desc *desc)
*/
if (work && desc->chip && desc->chip->end)
desc->chip->end(irq);
spin_unlock(&desc->lock);
raw_spin_unlock(&desc->lock);
return ok;
}