diff --git a/kernel/sched/core_sched.c b/kernel/sched/core_sched.c
index 17c460c4ca463afb47d20091c31564262f9eeb58..2aa714780d935587a588ea1c56bb2bf2fb330deb 100644
--- a/kernel/sched/core_sched.c
+++ b/kernel/sched/core_sched.c
@@ -268,6 +268,7 @@ void clear_all_cookie(void)
 	flush_workqueue(system_wq);
 }
 
+#if defined(CONFIG_GROUP_IDENTITY)
 bool sched_check_sched_core_lock(void)
 {
 	mutex_lock(&sched_core_gi_conflict_mutex);
@@ -281,6 +282,7 @@ void sched_check_sched_core_unlock(void)
 {
 	mutex_unlock(&sched_core_gi_conflict_mutex);
 }
+#endif
 
 int sysctl_sched_core_handler(struct ctl_table *table, int write,
 				void __user *buffer, size_t *lenp, loff_t *ppos)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 81ecf662abe7026b0f4df8c74a561ab808a62500..1299b3af6d2dfba7d723af67a9437cb3bede2e65 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1373,6 +1373,7 @@ void group_identity_put(void)
 	atomic_dec(&group_identity_count);
 }
 
+#if defined(CONFIG_SCHED_CORE)
 bool sched_check_group_identity_lock(void)
 {
 	mutex_lock(&sched_core_gi_conflict_mutex);
@@ -1385,6 +1386,7 @@ void sched_check_group_identity_unlock(void)
 {
 	mutex_unlock(&sched_core_gi_conflict_mutex);
 }
+#endif
 
 int sched_group_identity_enable_handler(struct ctl_table *table, int write,
 		void __user *buffer, size_t *lenp,
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 8099e13f7710a551d2de8026e3acde6b897a98fc..ad9c4dbdbbb5492529572d502663b11b6e6e26d1 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1250,7 +1250,7 @@ struct rq {
 	u64			max_idle_balance_cost;
 #endif /* CONFIG_SMP */
 
-#if defined(CONFIG_IRQ_TIME_ACCOUNTING) && defined(CONFIG_X86)
+#if defined(CONFIG_IRQ_TIME_ACCOUNTING) && (defined(CONFIG_X86) || defined(CONFIG_LOONGARCH))
 	u64			prev_irq_time;
 #endif
 #ifdef CONFIG_PARAVIRT