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rcutorture: Add three-level tree test for Tree SRCU

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This commit adds a test for a three-level srcu_node tree for Tree SRCU
in the existing SRCU-P scenario.  This requires enabling CONFIG_RCU_EXPERT,
so the CONFIG_RCU_EXPERT=n scenario is now SRCU-N.  The reason for using
SRCU-P for the tall tree is that preemption raises the possibility of
locating more bugs than does the non-preemptive SRCU-N.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2017-04-10 10:27:19 -07:00
parent 27dc0b1b9f
commit 8d6dd656a1
2 changed files with 4 additions and 2 deletions
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2
tools/testing/selftests/rcutorture/configs/rcu/SRCU-N
View File

@ -5,4 +5,4 @@ CONFIG_HOTPLUG_CPU=y
CONFIG_PREEMPT_NONE=y
CONFIG_PREEMPT_VOLUNTARY=n
CONFIG_PREEMPT=n
CONFIG_RCU_EXPERT=y
#CHECK#CONFIG_RCU_EXPERT=n

4
tools/testing/selftests/rcutorture/configs/rcu/SRCU-P
View File

@ -2,9 +2,11 @@ CONFIG_RCU_TRACE=n
CONFIG_SMP=y
CONFIG_NR_CPUS=8
CONFIG_HOTPLUG_CPU=y
CONFIG_RCU_EXPERT=y
CONFIG_RCU_FANOUT=2
CONFIG_RCU_FANOUT_LEAF=2
CONFIG_PREEMPT_NONE=n
CONFIG_PREEMPT_VOLUNTARY=n
CONFIG_PREEMPT=y
#CHECK#CONFIG_RCU_EXPERT=n
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_PROVE_LOCKING=y