1 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/xen/multicalls.h b/arch/x86/xen/multicalls.h
index 5d96a5fa210c..8bae996d99a3 100644
--- a/arch/x86/xen/multicalls.h
+++ b/arch/x86/xen/multicalls.h
@@ -42,4 +42,7 @@ static inline void xen_mc_issue(unsigned mode)
         local_irq_restore(x86_read_percpu(xen_mc_irq_flags));
 }
 
+/* Set up a callback to be called when the current batch is flushed */
+void xen_mc_callback(void (*fn)(void *), void *data);
+
 #endif /* _XEN_MULTICALLS_H */