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| author | Paul E. McKenney <paulmck@kernel.org> | 2022-12-20 05:02:20 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-01-04 04:47:44 +0300 |
| commit | 92987fe8bdd1cbec61919a394bb11316c5d860f4 (patch) | |
| tree | 2308b37ef7d2ebeb57c0a2391a51fccce00d53d1 /Documentation/admin-guide | |
| parent | 748bf47a89d722c7e77f8700705e2189be14e99e (diff) | |
| download | linux-92987fe8bdd1cbec61919a394bb11316c5d860f4.tar.xz | |
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 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 6cfa6e3996cf..aa453f9202d8 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5113,6 +5113,11 @@ rcupdate.rcu_cpu_stall_timeout to be used (after conversion from seconds to milliseconds). + rcupdate.rcu_exp_stall_task_details= [KNL] + Print stack dumps of any tasks blocking the + current expedited RCU grace period during an + expedited RCU CPU stall warning. + rcupdate.rcu_expedited= [KNL] Use expedited grace-period primitives, for example, synchronize_rcu_expedited() instead |