rcutorture: Test SRCU size transitions

paulmckrcu · paulmckrcu · commit b5597cb36f8b · 2022-02-08T11:19:15.000-08:00
Thie commit adds kernel boot parameters to the SRCU-N and SRCU-P
rcutorture scenarios to cause SRCU-N to test contention-based resizing
and SRCU-P to test init_srcu_struct()-time resizing.  Note that this
also tests never-resizing because the contention-based resizing normally
takes some minutes to make the shift.

Signed-off-by: Paul E. McKenney &lt;paulmck@kernel.org&gt;
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot
@@ -1 +1,2 @@
 rcutorture.torture_type=srcu
+rcutorture.fwd_progress=3
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot
@@ -1,2 +1,4 @@
 rcutorture.torture_type=srcud
 rcupdate.rcu_self_test=1
+rcutorture.fwd_progress=3
+srcutree.big_cpu_lim=5

Original file line number	Diff line number	Diff line change
`@@ -1 +1,2 @@`
`1`	`1`	`rcutorture.torture_type=srcu`
	`2`	`+rcutorture.fwd_progress=3`