diff --git a/regressions/ck_cohort/benchmark/throughput.c b/regressions/ck_cohort/benchmark/throughput.c
index 9242408..f94be74 100644
--- a/regressions/ck_cohort/benchmark/throughput.c
+++ b/regressions/ck_cohort/benchmark/throughput.c
@@ -60,26 +60,34 @@ static unsigned int barrier;
 static int critical CK_CC_CACHELINE;
 
 static void
-ck_spinlock_lock_with_context(ck_spinlock_t *lock, void *context)
+ck_spinlock_fas_lock_with_context(ck_spinlock_fas_t *lock, void *context)
 {
 
 	(void)context;
-	ck_spinlock_lock(lock);
+	ck_spinlock_fas_lock(lock);
 	return;
 }
 
 static void
-ck_spinlock_unlock_with_context(ck_spinlock_t *lock, void *context)
+ck_spinlock_fas_unlock_with_context(ck_spinlock_fas_t *lock, void *context)
 {
 
 	(void)context;
-	ck_spinlock_unlock(lock);
+	ck_spinlock_fas_unlock(lock);
 	return;
 }
 
+static bool
+ck_spinlock_fas_locked_with_context(ck_spinlock_fas_t *lock, void *context)
+{
+
+	(void)context;
+	return ck_spinlock_fas_locked(lock);
+}
+
 CK_COHORT_PROTOTYPE(basic,
-    ck_spinlock_lock_with_context, ck_spinlock_unlock_with_context,
-    ck_spinlock_lock_with_context, ck_spinlock_unlock_with_context)
+    ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context, ck_spinlock_fas_locked_with_context,
+    ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context, ck_spinlock_fas_locked_with_context)
 
 struct cohort_record {
 	CK_COHORT_INSTANCE(basic) cohort;
diff --git a/regressions/ck_cohort/ck_cohort.h b/regressions/ck_cohort/ck_cohort.h
index 847544c..8427d6b 100644
--- a/regressions/ck_cohort/ck_cohort.h
+++ b/regressions/ck_cohort/ck_cohort.h
@@ -1,24 +1,33 @@
 #define LOCK_NAME "ck_cohort"
 #define LOCK_DEFINE\
-	static ck_spinlock_fas_t global_fas_lock = CK_SPINLOCK_FAS_INITIALIZER;\
-	static ck_spinlock_fas_t local_fas_lock = CK_SPINLOCK_FAS_INITIALIZER;\
-	static void\
-	ck_spinlock_fas_lock_with_context(ck_spinlock_fas_t *lock, void *context)\
-	{\
-		(void)context;\
-		ck_spinlock_fas_lock(lock);\
-	}\
-\
-	static void\
-	ck_spinlock_fas_unlock_with_context(ck_spinlock_fas_t *lock, void *context)\
-	{\
-		(void)context;\
-		ck_spinlock_fas_unlock(lock);\
-	}\
-	CK_COHORT_PROTOTYPE(fas_fas,\
-		ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context,\
-		ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context)\
+	static ck_spinlock_fas_t global_fas_lock = CK_SPINLOCK_FAS_INITIALIZER;		\
+	static ck_spinlock_fas_t local_fas_lock = CK_SPINLOCK_FAS_INITIALIZER;		\
+	static void									\
+	ck_spinlock_fas_lock_with_context(ck_spinlock_fas_t *lock, void *context)	\
+	{										\
+		(void)context;								\
+		ck_spinlock_fas_lock(lock);						\
+	}										\
+											\
+	static void									\
+	ck_spinlock_fas_unlock_with_context(ck_spinlock_fas_t *lock, void *context)	\
+	{										\
+		(void)context;								\
+		ck_spinlock_fas_unlock(lock);						\
+	}										\
+											\
+	static bool									\
+	ck_spinlock_fas_locked_with_context(ck_spinlock_fas_t *lock, void *context)	\
+	{										\
+		(void)context;								\
+		return ck_spinlock_fas_locked(lock);					\
+	}										\
+	CK_COHORT_PROTOTYPE(fas_fas,							\
+	    ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context,	\
+	    ck_spinlock_fas_locked_with_context, ck_spinlock_fas_lock_with_context,	\
+	    ck_spinlock_fas_unlock_with_context, ck_spinlock_fas_locked_with_context)	\
 	static CK_COHORT_INSTANCE(fas_fas) CK_CC_CACHELINE cohort = CK_COHORT_INITIALIZER
+
 #define LOCK_INIT CK_COHORT_INIT(fas_fas, &cohort, &global_fas_lock, &local_fas_lock,\
 	CK_COHORT_DEFAULT_LOCAL_PASS_LIMIT)
 #define LOCK CK_COHORT_LOCK(fas_fas, &cohort, NULL, NULL)
diff --git a/regressions/ck_cohort/validate/validate.c b/regressions/ck_cohort/validate/validate.c
index de6d914..df1ac6c 100644
--- a/regressions/ck_cohort/validate/validate.c
+++ b/regressions/ck_cohort/validate/validate.c
@@ -59,6 +59,13 @@ ck_spinlock_fas_unlock_with_context(ck_spinlock_fas_t *lock, void *context)
 	ck_spinlock_fas_unlock(lock);
 }
 
+static bool
+ck_spinlock_fas_locked_with_context(ck_spinlock_fas_t *lock, void *context)
+{
+	(void)context;
+	return ck_spinlock_fas_locked(lock);
+}
+
 static bool
 ck_spinlock_fas_trylock_with_context(ck_spinlock_fas_t *lock, void *context)
 {
@@ -67,8 +74,10 @@ ck_spinlock_fas_trylock_with_context(ck_spinlock_fas_t *lock, void *context)
 }
 
 CK_COHORT_TRYLOCK_PROTOTYPE(fas_fas,
-	ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context, ck_spinlock_fas_trylock_with_context,
-	ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context, ck_spinlock_fas_trylock_with_context)
+	ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context,
+	ck_spinlock_fas_locked_with_context, ck_spinlock_fas_trylock_with_context,
+	ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context,
+	ck_spinlock_fas_locked_with_context, ck_spinlock_fas_trylock_with_context)
 static CK_COHORT_INSTANCE(fas_fas) *cohorts;
 static int n_cohorts;