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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-05-08 09:20:34 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-07-12 15:42:01 -0700 |
| commit | 028be12b294e3a059e6fc06852d458fdc82717ed (patch) | |
| tree | 3badc19b49a12f727701d129dfb5c609ceff6a3e /tools/testing/selftests/rcutorture | |
| parent | rcu: Add diagnostics for offline CPUs failing to report QS (diff) | |
| download | linux-dev-028be12b294e3a059e6fc06852d458fdc82717ed.tar.xz linux-dev-028be12b294e3a059e6fc06852d458fdc82717ed.zip | |
rcutorture: Change units of onoff_interval to jiffies
Some RCU bugs have been sensitive to the frequency of CPU-hotplug
operations, which have been gradually increased over time. But this
frequency is now at the one-second lower limit that can be specified using
the rcutorture.onoff_interval kernel parameter. This commit therefore
changes the units of rcutorture.onoff_interval from seconds to jiffies,
and also sets the value specified for this kernel parameter in the TREE03
rcutorture scenario to 200, which is 200 milliseconds for HZ=1000.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'tools/testing/selftests/rcutorture')
| -rw-r--r-- | tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/rcutorture/configs/rcu/ver_functions.sh | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot b/tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot index b79ddb9eb9e8..5c3213cc3ad7 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot +++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot @@ -1,4 +1,4 @@ -rcutorture.onoff_interval=1 rcutorture.onoff_holdoff=30 +rcutorture.onoff_interval=200 rcutorture.onoff_holdoff=30 rcutree.gp_preinit_delay=12 rcutree.gp_init_delay=3 rcutree.gp_cleanup_delay=3 diff --git a/tools/testing/selftests/rcutorture/configs/rcu/ver_functions.sh b/tools/testing/selftests/rcutorture/configs/rcu/ver_functions.sh index 24ec91041957..7bab8246392b 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/ver_functions.sh +++ b/tools/testing/selftests/rcutorture/configs/rcu/ver_functions.sh @@ -39,7 +39,7 @@ rcutorture_param_onoff () { if ! bootparam_hotplug_cpu "$1" && configfrag_hotplug_cpu "$2" then echo CPU-hotplug kernel, adding rcutorture onoff. 1>&2 - echo rcutorture.onoff_interval=3 rcutorture.onoff_holdoff=30 + echo rcutorture.onoff_interval=1000 rcutorture.onoff_holdoff=30 fi } |