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>

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);
                 }
         }
 }