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 <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Acked-by: Ingo Molnar <[email protected]>
mna · Dec 14, 2009 · 239007b · 239007b
1 parent 9f5a562
commit 239007b
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Showing 43 changed files with 240 additions and 240 deletions.
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
@@ -81,7 +81,7 @@ show_interrupts(struct seq_file *p, void *v)
 #endif
 
 	if (irq < ACTUAL_NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[irq].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[irq].lock, flags);
 		action = irq_desc[irq].action;
 		if (!action) 
 			goto unlock;
@@ -105,7 +105,7 @@ show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 unlock:
-		spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
 	} else if (irq == ACTUAL_NR_IRQS) {
 #ifdef CONFIG_SMP
 		seq_puts(p, "IPI: ");

diff --git a/arch/arm/include/asm/mach/irq.h b/arch/arm/include/asm/mach/irq.h
@@ -26,9 +26,9 @@ extern int show_fiq_list(struct seq_file *, void *);
  */
 #define do_bad_IRQ(irq,desc)				\
 do {							\
-	spin_lock(&desc->lock);				\
+	raw_spin_lock(&desc->lock);			\
 	handle_bad_irq(irq, desc);			\
-	spin_unlock(&desc->lock);			\
+	raw_spin_unlock(&desc->lock);			\
 } while(0)
 
 #endif
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
@@ -69,7 +69,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto unlock;
@@ -84,7 +84,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 unlock:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	} else if (i == NR_IRQS) {
 #ifdef CONFIG_FIQ
 		show_fiq_list(p, v);
@@ -139,15 +139,15 @@ void set_irq_flags(unsigned int irq, unsigned int iflags)
 	}
 
 	desc = irq_desc + irq;
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 	desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
 	if (iflags & IRQF_VALID)
 		desc->status &= ~IRQ_NOREQUEST;
 	if (iflags & IRQF_PROBE)
 		desc->status &= ~IRQ_NOPROBE;
 	if (!(iflags & IRQF_NOAUTOEN))
 		desc->status &= ~IRQ_NOAUTOEN;
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 }
 
 void __init init_IRQ(void)
@@ -166,9 +166,9 @@ static void route_irq(struct irq_desc *desc, unsigned int irq, unsigned int cpu)
 {
 	pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->node, cpu);
 
-	spin_lock_irq(&desc->lock);
+	raw_spin_lock_irq(&desc->lock);
 	desc->chip->set_affinity(irq, cpumask_of(cpu));
-	spin_unlock_irq(&desc->lock);
+	raw_spin_unlock_irq(&desc->lock);
 }
 
 /*

diff --git a/arch/arm/mach-ns9xxx/irq.c b/arch/arm/mach-ns9xxx/irq.c
@@ -66,7 +66,7 @@ static void handle_prio_irq(unsigned int irq, struct irq_desc *desc)
 	struct irqaction *action;
 	irqreturn_t action_ret;
 
-	spin_lock(&desc->lock);
+	raw_spin_lock(&desc->lock);
 
 	BUG_ON(desc->status & IRQ_INPROGRESS);
 
@@ -78,7 +78,7 @@ static void handle_prio_irq(unsigned int irq, struct irq_desc *desc)
 		goto out_mask;
 
 	desc->status |= IRQ_INPROGRESS;
-	spin_unlock(&desc->lock);
+	raw_spin_unlock(&desc->lock);
 
 	action_ret = handle_IRQ_event(irq, action);
 
@@ -87,7 +87,7 @@ static void handle_prio_irq(unsigned int irq, struct irq_desc *desc)
 	 * Maybe this function should go to kernel/irq/chip.c? */
 	note_interrupt(irq, desc, action_ret);
 
-	spin_lock(&desc->lock);
+	raw_spin_lock(&desc->lock);
 	desc->status &= ~IRQ_INPROGRESS;
 
 	if (desc->status & IRQ_DISABLED)
@@ -97,7 +97,7 @@ static void handle_prio_irq(unsigned int irq, struct irq_desc *desc)
 	/* ack unconditionally to unmask lower prio irqs */
 	desc->chip->ack(irq);
 
-	spin_unlock(&desc->lock);
+	raw_spin_unlock(&desc->lock);
 }
 #define handle_irq handle_prio_irq
 #endif

diff --git a/arch/avr32/kernel/irq.c b/arch/avr32/kernel/irq.c
@@ -51,7 +51,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto unlock;
@@ -66,7 +66,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 	unlock:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	}
 
 	return 0;

diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
@@ -23,7 +23,7 @@ void ack_bad_irq(unsigned int irq)
 
 static struct irq_desc bad_irq_desc = {
 	.handle_irq = handle_bad_irq,
-	.lock = __SPIN_LOCK_UNLOCKED(irq_desc->lock),
+	.lock = __RAW_SPIN_LOCK_UNLOCKED(bad_irq_desc.lock),
 };
 
 #ifdef CONFIG_CPUMASK_OFFSTACK
@@ -39,7 +39,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	unsigned long flags;
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto skip;
@@ -53,7 +53,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
  skip:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	} else if (i == NR_IRQS) {
 		seq_printf(p, "NMI: ");
 		for_each_online_cpu(j)

diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
@@ -1140,7 +1140,7 @@ void show_regs(struct pt_regs *fp)
 	if (fp->ipend & ~0x3F) {
 		for (i = 0; i < (NR_IRQS - 1); i++) {
 			if (!in_atomic)
-				spin_lock_irqsave(&irq_desc[i].lock, flags);
+				raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 
 			action = irq_desc[i].action;
 			if (!action)
@@ -1155,7 +1155,7 @@ void show_regs(struct pt_regs *fp)
 			verbose_printk("\n");
 unlock:
 			if (!in_atomic)
-				spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+				raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 		}
 	}
 

diff --git a/arch/cris/kernel/irq.c b/arch/cris/kernel/irq.c
@@ -52,7 +52,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto skip;
@@ -71,7 +71,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 skip:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	}
 	return 0;
 }

diff --git a/arch/frv/kernel/irq.c b/arch/frv/kernel/irq.c
@@ -69,7 +69,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (action) {
 			seq_printf(p, "%3d: ", i);
@@ -85,7 +85,7 @@ int show_interrupts(struct seq_file *p, void *v)
 			seq_putc(p, '\n');
 		}
 
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	} else if (i == NR_IRQS) {
 		seq_printf(p, "Err: %10u\n", atomic_read(&irq_err_count));
 	}

diff --git a/arch/h8300/kernel/irq.c b/arch/h8300/kernel/irq.c
@@ -186,7 +186,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		seq_puts(p, "           CPU0");
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto unlock;
@@ -200,7 +200,7 @@ int show_interrupts(struct seq_file *p, void *v)
 			seq_printf(p, ", %s", action->name);
 		seq_putc(p, '\n');
 unlock:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	}
 	return 0;
 }

diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
@@ -793,12 +793,12 @@ iosapic_register_intr (unsigned int gsi,
 			goto unlock_iosapic_lock;
 	}
 
-	spin_lock(&irq_desc[irq].lock);
+	raw_spin_lock(&irq_desc[irq].lock);
 	dest = get_target_cpu(gsi, irq);
 	dmode = choose_dmode();
 	err = register_intr(gsi, irq, dmode, polarity, trigger);
 	if (err < 0) {
-		spin_unlock(&irq_desc[irq].lock);
+		raw_spin_unlock(&irq_desc[irq].lock);
 		irq = err;
 		goto unlock_iosapic_lock;
 	}
@@ -817,7 +817,7 @@ iosapic_register_intr (unsigned int gsi,
 	       (polarity == IOSAPIC_POL_HIGH ? "high" : "low"),
 	       cpu_logical_id(dest), dest, irq_to_vector(irq));
 
-	spin_unlock(&irq_desc[irq].lock);
+	raw_spin_unlock(&irq_desc[irq].lock);
  unlock_iosapic_lock:
 	spin_unlock_irqrestore(&iosapic_lock, flags);
 	return irq;

diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
@@ -71,7 +71,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto skip;
@@ -91,7 +91,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 skip:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	} else if (i == NR_IRQS)
 		seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
 	return 0;

diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
@@ -345,7 +345,7 @@ static irqreturn_t smp_irq_move_cleanup_interrupt(int irq, void *dev_id)
 
 		desc = irq_desc + irq;
 		cfg = irq_cfg + irq;
-		spin_lock(&desc->lock);
+		raw_spin_lock(&desc->lock);
 		if (!cfg->move_cleanup_count)
 			goto unlock;
 
@@ -358,7 +358,7 @@ static irqreturn_t smp_irq_move_cleanup_interrupt(int irq, void *dev_id)
 		spin_unlock_irqrestore(&vector_lock, flags);
 		cfg->move_cleanup_count--;
 	unlock:
-		spin_unlock(&desc->lock);
+		raw_spin_unlock(&desc->lock);
 	}
 	return IRQ_HANDLED;
 }

diff --git a/arch/m32r/kernel/irq.c b/arch/m32r/kernel/irq.c
@@ -40,7 +40,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto skip;
@@ -59,7 +59,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 skip:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	}
 	return 0;
 }

diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
@@ -68,7 +68,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < nr_irq) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto skip;
@@ -89,7 +89,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 skip:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	}
 	return 0;
 }
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
@@ -99,7 +99,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto skip;
@@ -118,7 +118,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 skip:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	} else if (i == NR_IRQS) {
 		seq_putc(p, '\n');
 		seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));