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Diffstat (limited to 'include/linux/irq.h')
-rw-r--r--include/linux/irq.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 979eed1b2654..65916a305f3d 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -1165,4 +1165,22 @@ int __ipi_send_mask(struct irq_desc *desc, const struct cpumask *dest);
int ipi_send_single(unsigned int virq, unsigned int cpu);
int ipi_send_mask(unsigned int virq, const struct cpumask *dest);
+#ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER
+/*
+ * Registers a generic IRQ handling function as the top-level IRQ handler in
+ * the system, which is generally the first C code called from an assembly
+ * architecture-specific interrupt handler.
+ *
+ * Returns 0 on success, or -EBUSY if an IRQ handler has already been
+ * registered.
+ */
+int __init set_handle_irq(void (*handle_irq)(struct pt_regs *));
+
+/*
+ * Allows interrupt handlers to find the irqchip that's been registered as the
+ * top-level IRQ handler.
+ */
+extern void (*handle_arch_irq)(struct pt_regs *) __ro_after_init;
+#endif
+
#endif /* _LINUX_IRQ_H */