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rcutorture: Add boot-time adjustment of leaf fanout 

Currently, the rcutorture scripts do not test boot-time adjustment of
leaf fanout (via the rcutree.rcu_fanout_leaf boot parameter), as was noted
during testing carried out by Iftekhar Ahmed of Oregon State University.
This commit therefore adjusts TREE04's CONFIG_RCU_FANOUT_LEAF from 4 to 3,
and also adds rcutree.rcu_fanout_leaf=4 to its boot parameters.  This
change forces RCU's boot-time geometry-change code to be exercised.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2016-03-30 14:16:22 -07:00
parent 0aa67e75b3
commit a54062c0d9
2 changed files with 2 additions and 2 deletions
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2
tools/testing/selftests/rcutorture/configs/rcu/TREE04
View File

@ -14,7 +14,7 @@ CONFIG_HOTPLUG_CPU=n
CONFIG_SUSPEND=n
CONFIG_HIBERNATION=n
CONFIG_RCU_FANOUT=4
CONFIG_RCU_FANOUT_LEAF=4
CONFIG_RCU_FANOUT_LEAF=3
CONFIG_RCU_NOCB_CPU=n
CONFIG_DEBUG_LOCK_ALLOC=n
CONFIG_DEBUG_OBJECTS_RCU_HEAD=n

2
tools/testing/selftests/rcutorture/configs/rcu/TREE04.boot
View File

@ -1 +1 @@
rcutorture.torture_type=rcu_bh
rcutorture.torture_type=rcu_bh rcutree.rcu_fanout_leaf=4