linux-kernel - [tip:core/rcu] rcu: Improve rcutorture diagnostics when bad torture

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Message-ID: <tip-cf886c44ec418a01b2c52493465accb81acbf930@git.kernel.org>
Date:	Mon, 26 Oct 2009 11:37:43 GMT
From:	"tip-bot for Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulmck@...ux.vnet.ibm.com,
	hpa@...or.com, mingo@...hat.com, josh@...htriplett.org,
	tglx@...utronix.de, laijs@...fujitsu.com, mingo@...e.hu
Subject: [tip:core/rcu] rcu: Improve rcutorture diagnostics when bad torture_type specified

Commit-ID:  cf886c44ec418a01b2c52493465accb81acbf930
Gitweb:     http://git.kernel.org/tip/cf886c44ec418a01b2c52493465accb81acbf930
Author:     Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
AuthorDate: Sun, 25 Oct 2009 19:03:54 -0700
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 26 Oct 2009 09:40:31 +0100

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 <paulmck@...ux.vnet.ibm.com>
Acked-by: Josh Triplett <josh@...htriplett.org>
Reviewed-by: Lai Jiangshan <laijs@...fujitsu.com>
Cc: dipankar@...ibm.com
Cc: mathieu.desnoyers@...ymtl.ca
Cc: dvhltc@...ibm.com
Cc: niv@...ibm.com
Cc: peterz@...radead.org
Cc: rostedt@...dmis.org
Cc: Valdis.Kletnieks@...edu
Cc: dhowells@...hat.com
Cc: avi@...hat.com
Cc: mtosatti@...hat.com
LKML-Reference: <12565226351868-git-send-email->
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/rcutorture.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 14480e8..3dd0ca2 100644
--- 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;
 	}
--
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