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-rw-r--r--include/linux/smp.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/smp.h b/include/linux/smp.h
index 6a0813c905d0..f1aa0952e8c3 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -294,4 +294,10 @@ int smpcfd_prepare_cpu(unsigned int cpu);
int smpcfd_dead_cpu(unsigned int cpu);
int smpcfd_dying_cpu(unsigned int cpu);
+#ifdef CONFIG_CSD_LOCK_WAIT_DEBUG
+bool csd_lock_is_stuck(void);
+#else
+static inline bool csd_lock_is_stuck(void) { return false; }
+#endif
+
#endif /* __LINUX_SMP_H */