rcu: Remove redundant rcu_is_cpu_rrupt_from_idle() from tiny RCU

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

diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
index 0db5649f88179958d7ab26f982036a70c388a817..805b6d59c854380e9a1b722a089ae4e751f86b3d 100644 (file)
--- a/kernel/rcu/tiny.c
+++ b/kernel/rcu/tiny.c
@@ -185,16 +185,6 @@ EXPORT_SYMBOL(__rcu_is_watching);
 
 #endif /* defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_RCU_TRACE) */
 
-/*
- * Test whether the current CPU was interrupted from idle.  Nested
- * interrupts don't count, we must be running at the first interrupt
- * level.
- */
-static int rcu_is_cpu_rrupt_from_idle(void)
-{
-       return rcu_dynticks_nesting <= 1;
-}
-
 /*
  * Helper function for rcu_sched_qs() and rcu_bh_qs().
  * Also irqs are disabled to avoid confusion due to interrupt handlers
@@ -250,7 +240,7 @@ void rcu_bh_qs(void)
 void rcu_check_callbacks(int user)
 {
        RCU_TRACE(check_cpu_stalls());
-       if (user || rcu_is_cpu_rrupt_from_idle())
+       if (user)
                rcu_sched_qs();
        else if (!in_softirq())
                rcu_bh_qs();