diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2022-12-19 18:02:20 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-01-03 17:47:44 -0800 |
| commit | 92987fe8bdd1cbec61919a394bb11316c5d860f4 (patch) | |
| tree | 2308b37ef7d2ebeb57c0a2391a51fccce00d53d1 /kernel/rcu/rcu.h | |
| parent | 748bf47a89d722c7e77f8700705e2189be14e99e (diff) | |
rcu: Allow expedited RCU CPU stall warnings to dump task stacks
This commit introduces the rcupdate.rcu_exp_stall_task_details kernel
boot parameter, which cause expedited RCU CPU stall warnings to dump
the stacks of any tasks blocking the current expedited grace period.
Reported-by: David Howells <dhowells@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/rcu.h')
| -rw-r--r-- | kernel/rcu/rcu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index c5aa934de59b..fa640c45172e 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -224,6 +224,7 @@ extern int rcu_cpu_stall_ftrace_dump; extern int rcu_cpu_stall_suppress; extern int rcu_cpu_stall_timeout; extern int rcu_exp_cpu_stall_timeout; +extern bool rcu_exp_stall_task_details __read_mostly; int rcu_jiffies_till_stall_check(void); int rcu_exp_jiffies_till_stall_check(void); |