From: tip-bot for Andreas Gruenbacher <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org,
torvalds@linux-foundation.org, peterz@infradead.org,
andreas.gruenbacher@gmail.com, tglx@linutronix.de
Subject: [tip:locking/core] locking/lockdep: Only ask for /proc/ lock_stat output when available
Date: Thu, 17 Jul 2014 03:59:22 -0700 [thread overview]
Message-ID: <tip-acf59377267b5a74818e76873d0670b0ca6cf2fe@git.kernel.org> (raw)
In-Reply-To: <1405451452-3824-1-git-send-email-andreas.gruenbacher@gmail.com>
Commit-ID: acf59377267b5a74818e76873d0670b0ca6cf2fe
Gitweb: http://git.kernel.org/tip/acf59377267b5a74818e76873d0670b0ca6cf2fe
Author: Andreas Gruenbacher <andreas.gruenbacher@gmail.com>
AuthorDate: Tue, 15 Jul 2014 21:10:52 +0200
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Thu, 17 Jul 2014 11:48:15 +0200
locking/lockdep: Only ask for /proc/lock_stat output when available
When lockdep turns itself off, the following message is logged:
Please attach the output of /proc/lock_stat to the bug report
Omit this message when CONFIG_LOCK_STAT is off, and /proc/lock_stat
doesn't exist.
Signed-off-by: Andreas Gruenbacher <andreas.gruenbacher@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1405451452-3824-1-git-send-email-andreas.gruenbacher@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
kernel/locking/lockdep.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index d24e433..88d0d44 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -384,7 +384,9 @@ static void print_lockdep_off(const char *bug_msg)
{
printk(KERN_DEBUG "%s\n", bug_msg);
printk(KERN_DEBUG "turning off the locking correctness validator.\n");
+#ifdef CONFIG_LOCK_STAT
printk(KERN_DEBUG "Please attach the output of /proc/lock_stat to the bug report\n");
+#endif
}
static int save_trace(struct stack_trace *trace)
prev parent reply other threads:[~2014-07-17 11:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-15 19:10 [PATCH] lockdep: Only ask for /proc/lock_stat " Andreas Gruenbacher
2014-07-17 10:59 ` tip-bot for Andreas Gruenbacher [this message]
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