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| author |   Davidlohr Bueso <dave@stgolabs.net> | 2014-09-29 06:14:23 -0700 |
|---|---|---|
| committer |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-09-30 00:10:00 -0700 |
| commit | e34191fad8e5d9fe4e76f6d03b5e29e3eae7535a (patch) | |
| tree | bdf4b88a473d2a7c416cf44dc826cb8393cb0b4a /tools/testing/selftests/rcutorture | |
| parent | rcu: Eliminate deadlock between CPU hotplug and expedited grace periods (diff) | |
| download | linux-dev-e34191fad8e5d9fe4e76f6d03b5e29e3eae7535a.tar.xz linux-dev-e34191fad8e5d9fe4e76f6d03b5e29e3eae7535a.zip | |
locktorture: Support rwlocks
Add a "rw_lock" torture test to stress kernel rwlocks and their irq
variant. Reader critical regions are 5x longer than writers. As such
a similar ratio of lock acquisitions is seen in the statistics. In the
case of massive contention, both hold the lock for 1/10 of a second.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'tools/testing/selftests/rcutorture')
3 files changed, 8 insertions, 0 deletions
diff --git a/tools/testing/selftests/rcutorture/configs/lock/CFLIST b/tools/testing/selftests/rcutorture/configs/lock/CFLIST index 6108137da770..6910b7370761 100644 --- a/tools/testing/selftests/rcutorture/configs/lock/CFLIST +++ b/tools/testing/selftests/rcutorture/configs/lock/CFLIST @@ -1,3 +1,4 @@ LOCK01 LOCK02 LOCK03 +LOCK04
\ No newline at end of file diff --git a/tools/testing/selftests/rcutorture/configs/lock/LOCK04 b/tools/testing/selftests/rcutorture/configs/lock/LOCK04 new file mode 100644 index 000000000000..1d1da1477fc3 --- /dev/null +++ b/tools/testing/selftests/rcutorture/configs/lock/LOCK04 @@ -0,0 +1,6 @@ +CONFIG_SMP=y +CONFIG_NR_CPUS=4 +CONFIG_HOTPLUG_CPU=y +CONFIG_PREEMPT_NONE=n +CONFIG_PREEMPT_VOLUNTARY=n +CONFIG_PREEMPT=y diff --git a/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot b/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot new file mode 100644 index 000000000000..48c04fe47fb4 --- /dev/null +++ b/tools/testing/selftests/rcutorture/configs/lock/LOCK04.boot @@ -0,0 +1 @@ +locktorture.torture_type=rw_lock |