rcu: Improve rcutorture diagnostics when bad torture_type specified

Make rcutorture list the available torture_type values when it doesn't like the one specified. Signed-off-by: Paul E. McKenney <[email protected]> Acked-by: Josh Triplett <[email protected]> Reviewed-by: Lai Jiangshan <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] LKML-Reference: <12565226351868-git-send-email-> Signed-off-by: Ingo Molnar <[email protected]>
mgowda · Oct 26, 2009 · cf886c4 · cf886c4
1 parent 6417986
commit cf886c4
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
@@ -1129,8 +1129,12 @@ rcu_torture_init(void)
 			break;
 	}
 	if (i == ARRAY_SIZE(torture_ops)) {
-		printk(KERN_ALERT "rcutorture: invalid torture type: \"%s\"\n",
+		printk(KERN_ALERT "rcu-torture: invalid torture type: \"%s\"\n",
 		       torture_type);
+		printk(KERN_ALERT "rcu-torture types:");
+		for (i = 0; i < ARRAY_SIZE(torture_ops); i++)
+			printk(KERN_ALERT " %s", torture_ops[i]->name);
+		printk(KERN_ALERT "\n");
 		mutex_unlock(&fullstop_mutex);
 		return -EINVAL;
 	}