Messages in this thread Patch in this message | | | Date | Thu, 17 Jul 2014 03:59:22 -0700 | From | tip-bot for Andreas Gruenbacher <> | Subject | [tip:locking/core] locking/lockdep: Only ask for /proc/ lock_stat output when available |
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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)
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