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-rw-r--r--arch/s390/include/asm/etr.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/include/asm/etr.h b/arch/s390/include/asm/etr.h
index 629b79a93165..f7e5c36688c3 100644
--- a/arch/s390/include/asm/etr.h
+++ b/arch/s390/include/asm/etr.h
@@ -214,6 +214,9 @@ static inline int etr_ptff(void *ptff_block, unsigned int func)
void etr_switch_to_local(void);
void etr_sync_check(void);
+/* notifier for syncs */
+extern struct atomic_notifier_head s390_epoch_delta_notifier;
+
/* STP interruption parameter */
struct stp_irq_parm {
unsigned int _pad0 : 14;