X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=arch%2Fmips%2Finclude%2Fasm%2Firq.h;h=ebb9efb025029d6f5184f45f765688912a1ece48;hb=d8b8b5528ea5a394074a91e37571bcca081b27e1;hp=15e0fecbc300fd9752023931984fe277a73da876;hpb=16651fc2f30dfe14dcdd59cf0ccb4e1ccdba4dc7;p=firefly-linux-kernel-4.4.55.git

diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index 15e0fecbc300..ebb9efb02502 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -17,6 +17,18 @@
 
 #include <irq.h>
 
+#define IRQ_STACK_SIZE			THREAD_SIZE
+
+extern void *irq_stack[NR_CPUS];
+
+static inline bool on_irq_stack(int cpu, unsigned long sp)
+{
+	unsigned long low = (unsigned long)irq_stack[cpu];
+	unsigned long high = low + IRQ_STACK_SIZE;
+
+	return (low <= sp && sp <= high);
+}
+
 #ifdef CONFIG_I8259
 static inline int irq_canonicalize(int irq)
 {