Commit 630181c4 authored Dec 23, 2014 by Paul E. McKenney

rcu: Initialize tiny RCU stall-warning timeouts at boot

The current tiny RCU stall-warning code assumes that the jiffies counter
starts at zero, however, it is sometimes initialized to other values,
for example, -30,000. This commit therefore changes rcu_init() to
invoke reset_cpu_stall_ticks() for both flavors of RCU to initialize
the stall-warning times properly at boot.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

parent ec1fe396

kernel/rcu/tiny.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -383,6 +383,8 @@ EXPORT_SYMBOL_GPL(call_rcu_bh);
		void __init rcu_init(void)
		{
		open_softirq(RCU_SOFTIRQ, rcu_process_callbacks);
		RCU_TRACE(reset_cpu_stall_ticks(&rcu_sched_ctrlblk));
		RCU_TRACE(reset_cpu_stall_ticks(&rcu_bh_ctrlblk));

		rcu_early_boot_tests();
		}

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