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| author | Paul E. McKenney <paulmck@kernel.org> | 2019-08-04 13:17:35 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2019-10-05 10:46:05 -0700 |
| commit | 79ba7ff5a9925f5c170f51ed7a96d1475eb6c27f (patch) | |
| tree | bbc1dd08082d1b70a578c253ca1759ca2d61a4e5 /kernel/rcu/tree.c | |
| parent | 96926686deab853bcacf887501f4ed958e38666b (diff) | |
| download | linux-79ba7ff5a9925f5c170f51ed7a96d1475eb6c27f.tar.gz linux-79ba7ff5a9925f5c170f51ed7a96d1475eb6c27f.tar.bz2 linux-79ba7ff5a9925f5c170f51ed7a96d1475eb6c27f.zip | |
rcutorture: Emulate dyntick aspect of userspace nohz_full sojourn
During an actual call_rcu() flood, there would be frequent trips to
userspace (in-kernel call_rcu() floods must be otherwise housebroken).
Userspace execution on nohz_full CPUs implies an RCU dyntick idle/not-idle
transition pair, so this commit adds emulation of that pair.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 7c67ea561b36..66354ef776aa 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -375,6 +375,7 @@ void rcu_momentary_dyntick_idle(void) WARN_ON_ONCE(!(special & RCU_DYNTICK_CTRL_CTR)); rcu_preempt_deferred_qs(current); } +EXPORT_SYMBOL_GPL(rcu_momentary_dyntick_idle); /** * rcu_is_cpu_rrupt_from_idle - see if interrupted from idle |