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Diffstat (limited to 'arch/mips/kernel/irq.c')
-rw-r--r--arch/mips/kernel/irq.c34
1 files changed, 32 insertions, 2 deletions
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 7b845ba9dff4..981f86c26168 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -22,6 +22,7 @@
#include <linux/seq_file.h>
#include <linux/kallsyms.h>
#include <linux/kgdb.h>
+#include <linux/ftrace.h>
#include <asm/atomic.h>
#include <asm/system.h>
@@ -99,7 +100,7 @@ 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 +119,7 @@ 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));
@@ -150,3 +151,32 @@ void __init init_IRQ(void)
kgdb_early_setup = 1;
#endif
}
+
+/*
+ * do_IRQ handles all normal device IRQ's (the special
+ * SMP cross-CPU interrupts have their own specific
+ * handlers).
+ */
+void __irq_entry do_IRQ(unsigned int irq)
+{
+ irq_enter();
+ __DO_IRQ_SMTC_HOOK(irq);
+ generic_handle_irq(irq);
+ irq_exit();
+}
+
+#ifdef CONFIG_MIPS_MT_SMTC_IRQAFF
+/*
+ * To avoid inefficient and in some cases pathological re-checking of
+ * IRQ affinity, we have this variant that skips the affinity check.
+ */
+
+void __irq_entry do_IRQ_no_affinity(unsigned int irq)
+{
+ irq_enter();
+ __NO_AFFINITY_IRQ_SMTC_HOOK(irq);
+ generic_handle_irq(irq);
+ irq_exit();
+}
+
+#endif /* CONFIG_MIPS_MT_SMTC_IRQAFF */