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authorThomas Gleixner <tglx@linutronix.de>2009-11-17 16:46:45 +0100
committerThomas Gleixner <tglx@linutronix.de>2009-12-14 23:55:33 +0100
commit239007b8440abff689632f50cdf0f2b9e895b534 (patch)
tree569cab843af4a999d6d868ec9a824530d2bfa733 /arch/x86
parent9f5a5621e78cf48d86682a71ceb3fcdbde38b222 (diff)
downloadlinux-239007b8440abff689632f50cdf0f2b9e895b534.tar.bz2
genirq: Convert irq_desc.lock 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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/apic/io_apic.c4
-rw-r--r--arch/x86/kernel/irq.c14
2 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index d5d498fbee4b..11a5851f1f50 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2431,7 +2431,7 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
continue;
cfg = irq_cfg(irq);
- spin_lock(&desc->lock);
+ raw_spin_lock(&desc->lock);
if (vector == cfg->vector && cpumask_test_cpu(me, cfg->domain))
goto unlock;
@@ -2450,7 +2450,7 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
}
__get_cpu_var(vector_irq)[vector] = -1;
unlock:
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
}
irq_exit();
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 664bcb7384ac..91fd0c70a18a 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -149,7 +149,7 @@ int show_interrupts(struct seq_file *p, void *v)
if (!desc)
return 0;
- spin_lock_irqsave(&desc->lock, flags);
+ raw_spin_lock_irqsave(&desc->lock, flags);
for_each_online_cpu(j)
any_count |= kstat_irqs_cpu(i, j);
action = desc->action;
@@ -170,7 +170,7 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
out:
- spin_unlock_irqrestore(&desc->lock, flags);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
return 0;
}
@@ -294,12 +294,12 @@ void fixup_irqs(void)
continue;
/* interrupt's are disabled at this point */
- spin_lock(&desc->lock);
+ raw_spin_lock(&desc->lock);
affinity = desc->affinity;
if (!irq_has_action(irq) ||
cpumask_equal(affinity, cpu_online_mask)) {
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
continue;
}
@@ -326,7 +326,7 @@ void fixup_irqs(void)
if (!(desc->status & IRQ_MOVE_PCNTXT) && desc->chip->unmask)
desc->chip->unmask(irq);
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
if (break_affinity && set_affinity)
printk("Broke affinity for irq %i\n", irq);
@@ -356,10 +356,10 @@ void fixup_irqs(void)
irq = __get_cpu_var(vector_irq)[vector];
desc = irq_to_desc(irq);
- spin_lock(&desc->lock);
+ raw_spin_lock(&desc->lock);
if (desc->chip->retrigger)
desc->chip->retrigger(irq);
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
}
}
}