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-rw-r--r--Documentation/admin-guide/kernel-parameters.txt11
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index b642b8143fce..2b0692a642a7 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5113,6 +5113,17 @@
rcupdate.rcu_cpu_stall_timeout to be used (after
conversion from seconds to milliseconds).
+ rcupdate.rcu_cpu_stall_cputime= [KNL]
+ Provide statistics on the cputime and count of
+ interrupts and tasks during the sampling period. For
+ multiple continuous RCU stalls, all sampling periods
+ begin at half of the first RCU stall timeout.
+
+ 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