[PATCH rcu 11/12] rcutorture: Add light-weight SRCU scenario

[Paul E. McKenney]

This commit adds an rcutorture scenario that tests light-weight SRCU
readers.  While in the area, it adjusts the size of the TREE10 scenario.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
Cc: Andrii Nakryiko <andrii@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Cc: <bpf@xxxxxxxxxxxxxxx>
---
 tools/testing/selftests/rcutorture/configs/rcu/CFLIST  |  1 +
 tools/testing/selftests/rcutorture/configs/rcu/SRCU-L  | 10 ++++++++++
 .../selftests/rcutorture/configs/rcu/SRCU-L.boot       |  3 +++
 .../selftests/rcutorture/configs/rcu/SRCU-N.boot       |  1 +
 tools/testing/selftests/rcutorture/configs/rcu/TREE10  |  2 +-
 5 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-L
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-L.boot

diff --git a/tools/testing/selftests/rcutorture/configs/rcu/CFLIST b/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
index 98b6175e5aa09..45f572570a8c3 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
+++ b/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
@@ -5,6 +5,7 @@ TREE04
 TREE05
 TREE07
 TREE09
+SRCU-L
 SRCU-N
 SRCU-P
 SRCU-T
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L
new file mode 100644
index 0000000000000..3b4fa8dbef8a9
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L
@@ -0,0 +1,10 @@
+CONFIG_RCU_TRACE=n
+CONFIG_SMP=y
+CONFIG_NR_CPUS=6
+CONFIG_HOTPLUG_CPU=y
+CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=n
+#CHECK#CONFIG_RCU_EXPERT=n
+CONFIG_KPROBES=n
+CONFIG_FTRACE=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L.boot b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L.boot
new file mode 100644
index 0000000000000..0207b3138c5be
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L.boot
@@ -0,0 +1,3 @@
+rcutorture.torture_type=srcu
+rcutorture.reader_flavor=0x4
+rcutorture.fwd_progress=3
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot
index ce0694fd9b929..b54cf87dc1103 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot
@@ -1,2 +1,3 @@
 rcutorture.torture_type=srcu
+rcutorture.reader_flavor=0x2
 rcutorture.fwd_progress=3
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE10 b/tools/testing/selftests/rcutorture/configs/rcu/TREE10
index a323d8948b7cf..759ee51d3ddc6 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TREE10
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE10
@@ -1,5 +1,5 @@
 CONFIG_SMP=y
-CONFIG_NR_CPUS=56
+CONFIG_NR_CPUS=74
 CONFIG_PREEMPT_NONE=y
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
-- 
2.40.1