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-rw-r--r--Documentation/RCU/torture.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt
index af40929e1cb0..d67068d0d2b9 100644
--- a/Documentation/RCU/torture.txt
+++ b/Documentation/RCU/torture.txt
@@ -61,6 +61,14 @@ nreaders This is the number of RCU reading threads supported.
To properly exercise RCU implementations with preemptible
read-side critical sections.
+onoff_interval
+ The number of seconds between each attempt to execute a
+ randomly selected CPU-hotplug operation. Defaults to
+ zero, which disables CPU hotplugging. In HOTPLUG_CPU=n
+ kernels, rcutorture will silently refuse to do any
+ CPU-hotplug operations regardless of what value is
+ specified for onoff_interval.
+
shuffle_interval
The number of seconds to keep the test threads affinitied
to a particular subset of the CPUs, defaults to 3 seconds.