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Diffstat (limited to 'arch/mips/kernel/irq.c')
-rw-r--r--arch/mips/kernel/irq.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 8b0b4181219f..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>
@@ -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 */