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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-12-23 21:33:14 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-01-15 23:33:17 -0800 |
| commit | 630181c4a915edb0761bb282c567d3abc8ca2f35 (patch) | |
| tree | 0d2c62ef2866b5e913a0a7aff9c1d6477fca2ac9 /kernel/rcu | |
| parent | ec1fe396ff42e240c9b32111ee53665c5916fe5e (diff) | |
| download | linux-stable-630181c4a915edb0761bb282c567d3abc8ca2f35.tar.gz linux-stable-630181c4a915edb0761bb282c567d3abc8ca2f35.tar.bz2 linux-stable-630181c4a915edb0761bb282c567d3abc8ca2f35.zip | |
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>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tiny.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c index 0db5649f8817..fc0f2c07af3a 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(); } |