1 files changed, 14 insertions, 0 deletions
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
index 7a34a99d4664..c1ebfd51768b 100644
--- a/kernel/rcu/tiny.c
+++ b/kernel/rcu/tiny.c
@@ -232,6 +232,20 @@ bool poll_state_synchronize_rcu(unsigned long oldstate)
 }
 EXPORT_SYMBOL_GPL(poll_state_synchronize_rcu);
 
+#if IS_ENABLED(CONFIG_RCU_TORTURE_TEST)
+unsigned long long rcutorture_gather_gp_seqs(void)
+{
+	return READ_ONCE(rcu_ctrlblk.gp_seq) & 0xffffULL;
+}
+EXPORT_SYMBOL_GPL(rcutorture_gather_gp_seqs);
+
+void rcutorture_format_gp_seqs(unsigned long long seqs, char *cp, size_t len)
+{
+	snprintf(cp, len, "g%04llx", seqs & 0xffffULL);
+}
+EXPORT_SYMBOL_GPL(rcutorture_format_gp_seqs);
+#endif
+
 void __init rcu_init(void)
 {
 	open_softirq(RCU_SOFTIRQ, rcu_process_callbacks);