From 630181c4a915edb0761bb282c567d3abc8ca2f35 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 23 Dec 2014 21:33:14 -0800 Subject: 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 --- kernel/rcu/tiny.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c index 0db5649..fc0f2c0 100644 --- a/kernel/rcu/tiny.c +++ b/kernel/rcu/tiny.c @@ -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(); } -- cgit v1.1