MFC r367447:

  Add a method to determine whether given interrupt is per CPU or not.

2 files changed, 16 insertions, 0 deletions

diff --git a/sys/kern/subr_intr.c b/sys/kern/subr_intr.c
index f3724880c959..e1431d55d9d3 100644
--- a/sys/kern/subr_intr.c
+++ b/sys/kern/subr_intr.c
@@ -934,6 +934,21 @@ intr_resolve_irq(device_t dev, intptr_t xref, struct intr_map_data *data,
 	}
 }
 
+bool
+intr_is_per_cpu(struct resource *res)
+{
+	u_int res_id;
+	struct intr_irqsrc *isrc;
+
+	res_id = (u_int)rman_get_start(res);
+	isrc = intr_map_get_isrc(res_id);
+
+	if (isrc == NULL)
+		panic("Attempt to get isrc for non-active resource id: %u\n",
+		    res_id);
+	return ((isrc->isrc_flags & INTR_ISRCF_PPI) != 0);
+}
+
 int
 intr_activate_irq(device_t dev, struct resource *res)
 {
diff --git a/sys/sys/intr.h b/sys/sys/intr.h
index 74e2ae195b92..3b68799330b1 100644
--- a/sys/sys/intr.h
+++ b/sys/sys/intr.h
@@ -113,6 +113,7 @@ int intr_pic_deregister(device_t, intptr_t);
 int intr_pic_claim_root(device_t, intptr_t, intr_irq_filter_t *, void *, u_int);
 struct intr_pic *intr_pic_add_handler(device_t, struct intr_pic *,
     intr_child_irq_filter_t *, void *, uintptr_t, uintptr_t);
+bool intr_is_per_cpu(struct resource *);
 
 extern device_t intr_irq_root_dev;