[PATCH tip/core/rcu 29/55] rcutorture: Add diagnostic for unscheduled system shutdown

[Paul E. McKenney]

From: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>

Currently, rcutorture can terminate via rmmod, via self-shutdown,
via something else shutting the system down, or of course the usual
catastrophic termination.  The first two get flagged, so this commit adds
a message for the third.  For the fourth, your warranty is void as always.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
 kernel/torture.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/kernel/torture.c b/kernel/torture.c
index ed360cf948da..d51de3029a5c 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -438,10 +438,12 @@ static int torture_shutdown_notify(struct notifier_block *unused1,
 				   unsigned long unused2, void *unused3)
 {
 	mutex_lock(&fullstop_mutex);
-	if (fullstop == FULLSTOP_DONTSTOP)
+	if (fullstop == FULLSTOP_DONTSTOP) {
+		VERBOSE_TOROUT_STRING("Unscheduled system shutdown detected");
 		fullstop = FULLSTOP_SHUTDOWN;
-	else
+	} else {
 		pr_warn("Concurrent rmmod and shutdown illegal!\n");
+	}
 	mutex_unlock(&fullstop_mutex);
 	return NOTIFY_DONE;
 }
-- 
1.8.1.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/