linux-kernel - [PATCH tip/core/rcu 05/88] rcutorture: Add a scenario for Classic SRCU

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Date:   Thu, 25 May 2017 14:58:38 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, bobby.prani@...il.com,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 05/88] rcutorture: Add a scenario for Classic SRCU

A robust combination of paranoia and cowardice has resulted in retaining
Classic SRCU (CONFIG_CLASSIC_SRCU) as a backup for the shiny new Tiny
and Tree SRCU implementations.  If it is to be a viable backup, it of
course needs to be tested.  This commit therefore adds an rcutorture
scenario named SRCU-C for Classic SRCU.  This commit also adds this
scenario to the set that are run by default.

Once sufficient good experience has accumulated for Tiny and Tree SRCU,
this test will be removed, along with the Classic SRCU implementation
itself.

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
 tools/testing/selftests/rcutorture/configs/rcu/CFLIST      |  1 +
 tools/testing/selftests/rcutorture/configs/rcu/SRCU-C      | 11 +++++++++++
 tools/testing/selftests/rcutorture/configs/rcu/SRCU-C.boot |  1 +
 3 files changed, 13 insertions(+)
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-C
 create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-C.boot

diff --git a/tools/testing/selftests/rcutorture/configs/rcu/CFLIST b/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
index 6a0b9f69faad..0c1da784b8cb 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
+++ b/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
@@ -7,6 +7,7 @@ TREE06
 TREE07
 TREE08
 TREE09
+SRCU-C
 SRCU-N
 SRCU-P
 SRCU-t
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-C b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-C
new file mode 100644
index 000000000000..e4f8b1b75584
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-C
@@ -0,0 +1,11 @@
+CONFIG_RCU_TRACE=n
+CONFIG_SMP=y
+CONFIG_NR_CPUS=8
+CONFIG_HOTPLUG_CPU=y
+CONFIG_RCU_EXPERT=y
+CONFIG_CLASSIC_SRCU=y
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
+CONFIG_DEBUG_LOCK_ALLOC=y
+CONFIG_PROVE_LOCKING=y
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-C.boot b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-C.boot
new file mode 100644
index 000000000000..84a7d51b7481
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-C.boot
@@ -0,0 +1 @@
+rcutorture.torture_type=srcud
-- 
2.5.2