arm64: dts: rockchip: rk3368: add qos node

[firefly-linux-kernel-4.4.55.git] / kernel / rcu / sync.c

diff --git a/kernel/rcu/sync.c b/kernel/rcu/sync.c
index be922c9f3d37256fc060d5b9ba0aaf6a2d1f085c..b49cf3ac2d475a40a0558abed478dad5908ec376 100644 (file)
--- a/kernel/rcu/sync.c
+++ b/kernel/rcu/sync.c
@@ -68,6 +68,7 @@ void rcu_sync_lockdep_assert(struct rcu_sync *rsp)
        RCU_LOCKDEP_WARN(!gp_ops[rsp->gp_type].held(),
                         "suspicious rcu_sync_is_idle() usage");
 }
+EXPORT_SYMBOL_GPL(rcu_sync_lockdep_assert);
 #endif
 
 /**
@@ -82,6 +83,18 @@ void rcu_sync_init(struct rcu_sync *rsp, enum rcu_sync_type type)
        rsp->gp_type = type;
 }
 
+/**
+ * Must be called after rcu_sync_init() and before first use.
+ *
+ * Ensures rcu_sync_is_idle() returns false and rcu_sync_{enter,exit}()
+ * pairs turn into NO-OPs.
+ */
+void rcu_sync_enter_start(struct rcu_sync *rsp)
+{
+       rsp->gp_count++;
+       rsp->gp_state = GP_PASSED;
+}
+
 /**
  * rcu_sync_enter() - Force readers onto slowpath
  * @rsp: Pointer to rcu_sync structure to use for synchronization